/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:44:23,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:44:23,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:44:24,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:44:24,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:44:24,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:44:24,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:44:24,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:44:24,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:44:24,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:44:24,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:44:24,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:44:24,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:44:24,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:44:24,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:44:24,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:44:24,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:44:24,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:44:24,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:44:24,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:44:24,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:44:24,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:44:24,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:44:24,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:44:24,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:44:24,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:44:24,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:44:24,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:44:24,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:44:24,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:44:24,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:44:24,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:44:24,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:44:24,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:44:24,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:44:24,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:44:24,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:44:24,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:44:24,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:44:24,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:44:24,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:44:24,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:44:24,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:44:24,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:44:24,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:44:24,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:44:24,136 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:44:24,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:44:24,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:44:24,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:44:24,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:44:24,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:44:24,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:44:24,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:44:24,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:44:24,139 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:44:24,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:44:24,140 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:44:24,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:44:24,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:44:24,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:44:24,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:44:24,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:44:24,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:44:24,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:44:24,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:44:24,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:44:24,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:44:24,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:44:24,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:44:24,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:44:24,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 16:44:24,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:44:24,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:44:24,620 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:44:24,621 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:44:24,622 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:44:24,623 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c [2020-09-24 16:44:24,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c1343b03/1ba2b23b24fa4468bfc1be338210ee01/FLAG7dbb4bc52 [2020-09-24 16:44:25,289 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:44:25,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c [2020-09-24 16:44:25,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c1343b03/1ba2b23b24fa4468bfc1be338210ee01/FLAG7dbb4bc52 [2020-09-24 16:44:25,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c1343b03/1ba2b23b24fa4468bfc1be338210ee01 [2020-09-24 16:44:25,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:44:25,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:44:25,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:44:25,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:44:25,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:44:25,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:44:25" (1/1) ... [2020-09-24 16:44:25,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2830e110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:25, skipping insertion in model container [2020-09-24 16:44:25,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:44:25" (1/1) ... [2020-09-24 16:44:25,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:44:25,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:44:26,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:44:26,150 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:44:26,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:44:26,326 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:44:26,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:26 WrapperNode [2020-09-24 16:44:26,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:44:26,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:44:26,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:44:26,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:44:26,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:26" (1/1) ... [2020-09-24 16:44:26,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:26" (1/1) ... [2020-09-24 16:44:26,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:26" (1/1) ... [2020-09-24 16:44:26,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:26" (1/1) ... [2020-09-24 16:44:26,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:26" (1/1) ... [2020-09-24 16:44:26,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:26" (1/1) ... [2020-09-24 16:44:26,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:26" (1/1) ... [2020-09-24 16:44:26,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:44:26,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:44:26,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:44:26,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:44:26,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:44:26,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:44:26,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:44:26,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:44:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:44:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:44:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:44:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 16:44:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:44:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 16:44:26,551 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:44:26,551 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:44:26,552 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:44:26,552 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:44:26,552 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:44:26,552 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 16:44:26,553 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 16:44:26,553 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:44:26,554 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:44:26,554 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:44:26,554 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:44:26,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:44:26,554 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:44:26,555 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:44:26,555 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:44:26,555 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:44:26,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:44:26,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-24 16:44:26,556 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:44:26,556 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:44:26,557 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:44:26,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:44:26,557 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:44:26,557 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:44:26,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 16:44:26,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:44:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:44:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:44:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:44:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:44:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:44:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:44:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:44:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:44:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:44:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:44:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 16:44:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:44:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:44:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:44:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:44:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:44:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:44:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 16:44:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:44:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:44:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:44:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:44:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-24 16:44:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:44:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:44:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 16:44:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 16:44:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:44:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 16:44:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:44:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:44:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:44:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:44:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:44:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:44:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:44:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:44:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:44:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:44:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:44:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:44:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:44:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:44:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:44:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:44:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:44:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:44:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:44:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:44:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:44:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:44:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:44:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:44:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:44:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:44:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:44:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:44:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:44:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:44:27,749 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:44:27,750 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:44:27,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:44:27 BoogieIcfgContainer [2020-09-24 16:44:27,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:44:27,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:44:27,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:44:27,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:44:27,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:44:25" (1/3) ... [2020-09-24 16:44:27,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7252d38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:44:27, skipping insertion in model container [2020-09-24 16:44:27,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:26" (2/3) ... [2020-09-24 16:44:27,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7252d38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:44:27, skipping insertion in model container [2020-09-24 16:44:27,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:44:27" (3/3) ... [2020-09-24 16:44:27,774 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product46.cil.c [2020-09-24 16:44:27,787 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:44:27,801 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:44:27,824 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:44:27,858 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:44:27,858 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:44:27,858 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:44:27,858 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:44:27,858 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:44:27,859 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:44:27,859 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:44:27,859 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:44:27,886 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states. [2020-09-24 16:44:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:44:27,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:44:27,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:44:27,906 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:44:27,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:44:27,915 INFO L82 PathProgramCache]: Analyzing trace with hash 349586246, now seen corresponding path program 1 times [2020-09-24 16:44:27,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:44:27,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585587511] [2020-09-24 16:44:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:44:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:28,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:30,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:31,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:44,775 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:44,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:44:44,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:44:44,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16450 [2020-09-24 16:44:44,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:44,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 16:44:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 16:44:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 16:44:44,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:44:45,313 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:44:45,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:44:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:45,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:45,599 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:45,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:44:45,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:45,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-24 16:44:45,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:45,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:45,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:45,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 16:44:45,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:45,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:44:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:45,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:45,702 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:45,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:44:45,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:45,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:44:45,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:45,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:44:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:44:45,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:44:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:45,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:45,719 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:45,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:44:45,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:45,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:44:45,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:45,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:45,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:45,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:44:45,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:45,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:44:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:45,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:45,750 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:45,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:44:45,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:45,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 16:44:45,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:45,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:45,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:45,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:44:45,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:45,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:44:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:45,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:45,761 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:45,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:44:45,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:45,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:44:45,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:45,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:45,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:45,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:44:45,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:45,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:44:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:45,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:45,781 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:45,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:44:45,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:45,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:44:45,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:44:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:44:45,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:45,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:44:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:45,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:45,797 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:44:45,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:44:45,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:44:45,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 16:44:45,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:44:45,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:44:45,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:44:45,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:44:45,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:44:45,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:44:45,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585587511] [2020-09-24 16:44:45,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:44:45,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:44:45,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161215485] [2020-09-24 16:44:45,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:44:45,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:44:45,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:44:45,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:44:45,912 INFO L87 Difference]: Start difference. First operand 314 states. Second operand 8 states. [2020-09-24 16:44:46,599 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 16:44:47,977 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:44:48,368 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 16:44:48,732 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:44:49,109 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 16:44:49,453 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:44:50,487 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:44:50,791 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:44:51,160 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:44:52,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:44:52,289 INFO L93 Difference]: Finished difference Result 619 states and 770 transitions. [2020-09-24 16:44:52,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 16:44:52,292 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-24 16:44:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:44:52,315 INFO L225 Difference]: With dead ends: 619 [2020-09-24 16:44:52,315 INFO L226 Difference]: Without dead ends: 416 [2020-09-24 16:44:52,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-24 16:44:52,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-09-24 16:44:52,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 373. [2020-09-24 16:44:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-09-24 16:44:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 427 transitions. [2020-09-24 16:44:52,465 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 427 transitions. Word has length 142 [2020-09-24 16:44:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:44:52,466 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 427 transitions. [2020-09-24 16:44:52,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:44:52,467 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 427 transitions. [2020-09-24 16:44:52,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-24 16:44:52,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:44:52,473 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:44:52,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:44:52,474 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:44:52,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:44:52,475 INFO L82 PathProgramCache]: Analyzing trace with hash -999610643, now seen corresponding path program 1 times [2020-09-24 16:44:52,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:44:52,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525064972] [2020-09-24 16:44:52,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:44:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:52,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:52,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:53,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:54,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking...