/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:53:58,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:53:58,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:53:58,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:53:58,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:53:58,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:53:58,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:53:58,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:53:58,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:53:58,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:53:58,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:53:58,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:53:58,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:53:58,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:53:58,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:53:58,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:53:58,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:53:58,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:53:58,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:53:58,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:53:58,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:53:58,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:53:58,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:53:58,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:53:58,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:53:58,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:53:58,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:53:58,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:53:58,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:53:58,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:53:58,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:53:58,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:53:58,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:53:58,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:53:58,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:53:58,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:53:58,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:53:58,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:53:58,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:53:58,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:53:58,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:53:58,225 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 16:53:58,265 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:53:58,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:53:58,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:53:58,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:53:58,267 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:53:58,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:53:58,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:53:58,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:53:58,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:53:58,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:53:58,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:53:58,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:53:58,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:53:58,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:53:58,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:53:58,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:53:58,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:53:58,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:53:58,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:53:58,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:53:58,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:53:58,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:53:58,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:53:58,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:53:58,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:53:58,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:53:58,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:53:58,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:53:58,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:53:58,275 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 16:53:58,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:53:58,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:53:58,734 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:53:58,736 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:53:58,736 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:53:58,738 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product20.cil.c [2020-09-24 16:53:58,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3620fb903/4003ba6b56e34948848274dbcdffffa3/FLAG5e8454d0a [2020-09-24 16:53:59,357 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:53:59,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product20.cil.c [2020-09-24 16:53:59,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3620fb903/4003ba6b56e34948848274dbcdffffa3/FLAG5e8454d0a [2020-09-24 16:53:59,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3620fb903/4003ba6b56e34948848274dbcdffffa3 [2020-09-24 16:53:59,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:53:59,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:53:59,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:53:59,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:53:59,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:53:59,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:53:59" (1/1) ... [2020-09-24 16:53:59,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7845d484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:53:59, skipping insertion in model container [2020-09-24 16:53:59,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:53:59" (1/1) ... [2020-09-24 16:53:59,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:53:59,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:54:00,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:54:00,302 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:54:00,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:54:00,436 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:54:00,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:00 WrapperNode [2020-09-24 16:54:00,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:54:00,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:54:00,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:54:00,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:54:00,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:00" (1/1) ... [2020-09-24 16:54:00,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:00" (1/1) ... [2020-09-24 16:54:00,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:00" (1/1) ... [2020-09-24 16:54:00,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:00" (1/1) ... [2020-09-24 16:54:00,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:00" (1/1) ... [2020-09-24 16:54:00,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:00" (1/1) ... [2020-09-24 16:54:00,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:00" (1/1) ... [2020-09-24 16:54:00,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:54:00,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:54:00,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:54:00,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:54:00,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:00" (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 16:54:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:54:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:54:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:54:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:54:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:54:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:54:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:54:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:54:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:54:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:54:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:54:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:54:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:54:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 16:54:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:54:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:54:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:54:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:54:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:54:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:54:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:54:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:54:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:54:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:54:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:54:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:54:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:54:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:54:00,615 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:54:00,615 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:54:00,615 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:54:00,615 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:54:00,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:54:00,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:54:00,616 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:54:00,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 16:54:00,616 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 16:54:00,616 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 16:54:00,616 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:54:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:54:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:54:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:54:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:54:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:54:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:54:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:54:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:54:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:54:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:54:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:54:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:54:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:54:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 16:54:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:54:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:54:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:54:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:54:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:54:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:54:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:54:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:54:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:54:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:54:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:54:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:54:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:54:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:54:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:54:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:54:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:54:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:54:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:54:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:54:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:54:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:54:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:54:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:54:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:54:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:54:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:54:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:54:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:54:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:54:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 16:54:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 16:54:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:54:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:54:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 16:54:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:54:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:54:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:54:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:54:01,734 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:54:01,734 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:54:01,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:54:01 BoogieIcfgContainer [2020-09-24 16:54:01,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:54:01,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:54:01,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:54:01,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:54:01,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:53:59" (1/3) ... [2020-09-24 16:54:01,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd4fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:54:01, skipping insertion in model container [2020-09-24 16:54:01,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:00" (2/3) ... [2020-09-24 16:54:01,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd4fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:54:01, skipping insertion in model container [2020-09-24 16:54:01,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:54:01" (3/3) ... [2020-09-24 16:54:01,751 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product20.cil.c [2020-09-24 16:54:01,762 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:54:01,773 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:54:01,796 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:54:01,824 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:54:01,825 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:54:01,825 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:54:01,825 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:54:01,825 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:54:01,825 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:54:01,825 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:54:01,825 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:54:01,849 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2020-09-24 16:54:01,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:54:01,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:54:01,867 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 16:54:01,867 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:54:01,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:54:01,875 INFO L82 PathProgramCache]: Analyzing trace with hash -303745462, now seen corresponding path program 1 times [2020-09-24 16:54:01,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:54:01,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869850290] [2020-09-24 16:54:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:54:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:02,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:02,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:03,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:04,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:15,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:17,400 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:17,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:54:17,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:54:17,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15129 [2020-09-24 16:54:17,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 16:54:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:17,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:54:18,025 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:54:18,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:54:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:18,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:18,167 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:18,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:54:18,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 16:54:18,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:18,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:18,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:54:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:18,228 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:18,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:18,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:18,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:54:18,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:18,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:18,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:54:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:18,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:18,235 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:18,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:18,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:18,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:54:18,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:18,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:18,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:18,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:18,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:18,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:54:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:18,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:18,244 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:18,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:18,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:54:18,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:18,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:54:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:18,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:18,252 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:18,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:18,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:18,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:54:18,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:18,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:18,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:18,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:18,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:18,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:54:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:18,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:18,258 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:18,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:18,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:18,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:54:18,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:18,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:54:18,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:18,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:54:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:18,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:18,266 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:18,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:18,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:54:18,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:54:18,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:18,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:18,293 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 16:54:18,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869850290] [2020-09-24 16:54:18,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:54:18,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:54:18,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803294517] [2020-09-24 16:54:18,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:54:18,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:54:18,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:54:18,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:54:18,332 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2020-09-24 16:54:19,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:54:19,749 INFO L93 Difference]: Finished difference Result 436 states and 522 transitions. [2020-09-24 16:54:19,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:54:19,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-24 16:54:19,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:54:19,784 INFO L225 Difference]: With dead ends: 436 [2020-09-24 16:54:19,784 INFO L226 Difference]: Without dead ends: 276 [2020-09-24 16:54:19,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:54:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-09-24 16:54:19,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 234. [2020-09-24 16:54:19,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-24 16:54:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 253 transitions. [2020-09-24 16:54:19,899 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 253 transitions. Word has length 142 [2020-09-24 16:54:19,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:54:19,900 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 253 transitions. [2020-09-24 16:54:19,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:54:19,901 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 253 transitions. [2020-09-24 16:54:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 16:54:19,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:54:19,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:54:19,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:54:19,913 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:54:19,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:54:19,913 INFO L82 PathProgramCache]: Analyzing trace with hash 2117068885, now seen corresponding path program 1 times [2020-09-24 16:54:19,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:54:19,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869429942] [2020-09-24 16:54:19,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:54:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:20,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:21,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:21,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:23,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:49,034 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:49,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 16:54:49,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:54:49,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29050 [2020-09-24 16:54:49,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 16:54:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 16:54:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 16:54:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:49,401 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:54:49,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:54:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:49,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:49,630 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:49,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:54:49,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:49,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-24 16:54:49,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:54:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 16:54:49,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:49,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:54:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:49,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:49,675 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:49,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:49,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:54:49,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:49,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:54:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:54:49,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:49,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:54:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:49,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:49,683 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:49,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:49,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:49,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:54:49,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:49,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:54:49,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:49,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:54:49,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:49,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:54:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:49,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:49,694 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:49,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:49,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:49,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:54:49,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:49,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:54:49,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:49,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:54:49,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:49,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:54:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:49,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:49,702 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:49,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:49,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:49,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:54:49,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:54:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:54:49,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:49,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 16:54:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:49,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:49,714 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:49,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:49,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:49,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:54:49,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:54:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:54:49,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:49,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 16:54:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:49,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:49,745 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:49,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:49,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:49,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:54:49,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:49,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:49,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:54:49,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:49,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:54:49,778 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 16:54:49,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869429942] [2020-09-24 16:54:49,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:54:49,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:54:49,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311436602] [2020-09-24 16:54:49,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:54:49,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:54:49,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:54:49,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:54:49,782 INFO L87 Difference]: Start difference. First operand 234 states and 253 transitions. Second operand 8 states. [2020-09-24 16:54:50,303 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186