/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_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:43:34,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:43:34,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:43:34,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:43:34,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:43:34,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:43:34,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:43:34,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:43:34,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:43:34,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:43:34,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:43:34,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:43:34,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:43:34,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:43:34,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:43:34,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:43:34,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:43:34,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:43:34,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:43:34,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:43:34,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:43:34,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:43:34,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:43:34,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:43:34,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:43:34,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:43:34,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:43:34,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:43:34,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:43:34,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:43:34,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:43:34,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:43:34,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:43:34,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:43:34,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:43:34,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:43:34,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:43:34,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:43:34,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:43:34,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:43:34,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:43:34,227 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 16:43:34,276 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:43:34,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:43:34,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:43:34,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:43:34,280 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:43:34,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:43:34,281 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:43:34,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:43:34,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:43:34,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:43:34,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:43:34,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:43:34,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:43:34,283 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:43:34,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:43:34,283 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:43:34,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:43:34,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:43:34,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:43:34,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:43:34,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:43:34,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:43:34,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:43:34,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:43:34,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:43:34,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:43:34,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:43:34,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:43:34,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:43:34,287 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 16:43:34,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:43:34,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:43:34,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:43:34,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:43:34,748 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:43:34,749 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-09-24 16:43:34,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/820527aea/b9a880e660554e6798800fbe39ffc416/FLAG1bf9aa5a5 [2020-09-24 16:43:35,400 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:43:35,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-09-24 16:43:35,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/820527aea/b9a880e660554e6798800fbe39ffc416/FLAG1bf9aa5a5 [2020-09-24 16:43:35,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/820527aea/b9a880e660554e6798800fbe39ffc416 [2020-09-24 16:43:35,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:43:35,714 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:43:35,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:43:35,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:43:35,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:43:35,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:43:35" (1/1) ... [2020-09-24 16:43:35,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638c4c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:35, skipping insertion in model container [2020-09-24 16:43:35,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:43:35" (1/1) ... [2020-09-24 16:43:35,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:43:35,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:43:36,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:43:36,194 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:43:36,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:43:36,465 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:43:36,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:36 WrapperNode [2020-09-24 16:43:36,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:43:36,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:43:36,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:43:36,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:43:36,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:36" (1/1) ... [2020-09-24 16:43:36,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:36" (1/1) ... [2020-09-24 16:43:36,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:36" (1/1) ... [2020-09-24 16:43:36,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:36" (1/1) ... [2020-09-24 16:43:36,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:36" (1/1) ... [2020-09-24 16:43:36,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:36" (1/1) ... [2020-09-24 16:43:36,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:36" (1/1) ... [2020-09-24 16:43:36,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:43:36,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:43:36,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:43:36,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:43:36,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:36" (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 16:43:36,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:43:36,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:43:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:43:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:43:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:43:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:43:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:43:36,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:43:36,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:43:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:43:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:43:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:43:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:43:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:43:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:43:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:43:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:43:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:43:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 16:43:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:43:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:43:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:43:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:43:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:43:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:43:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:43:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:43:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:43:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:43:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-24 16:43:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:43:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:43:36,676 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:43:36,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:43:36,676 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:43:36,676 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:43:36,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 16:43:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:43:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:43:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:43:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:43:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:43:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:43:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:43:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:43:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:43:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:43:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:43:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:43:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:43:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:43:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:43:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:43:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:43:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:43:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:43:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:43:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:43:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:43:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:43:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:43:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 16:43:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:43:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:43:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:43:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:43:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:43:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-24 16:43:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:43:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:43:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 16:43:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:43:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:43:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:43:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:43:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:43:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:43:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:43:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:43:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:43:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:43:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:43:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:43:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:43:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:43:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:43:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:43:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:43:37,820 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:43:37,821 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:43:37,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:43:37 BoogieIcfgContainer [2020-09-24 16:43:37,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:43:37,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:43:37,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:43:37,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:43:37,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:43:35" (1/3) ... [2020-09-24 16:43:37,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17658bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:43:37, skipping insertion in model container [2020-09-24 16:43:37,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:43:36" (2/3) ... [2020-09-24 16:43:37,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17658bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:43:37, skipping insertion in model container [2020-09-24 16:43:37,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:43:37" (3/3) ... [2020-09-24 16:43:37,839 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-09-24 16:43:37,850 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:43:37,861 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:43:37,885 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:43:37,916 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:43:37,916 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:43:37,916 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:43:37,917 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:43:37,917 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:43:37,917 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:43:37,917 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:43:37,917 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:43:37,942 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2020-09-24 16:43:37,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:43:37,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:43:37,960 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 16:43:37,960 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:43:37,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:43:37,968 INFO L82 PathProgramCache]: Analyzing trace with hash -955195086, now seen corresponding path program 1 times [2020-09-24 16:43:37,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:43:37,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458995346] [2020-09-24 16:43:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:43:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:43:38,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:38,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:39,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:40,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:40,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:58,898 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:43:58,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:43:58,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:43:58,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20549 [2020-09-24 16:43:58,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:43:58,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:43:58,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 16:43:58,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 16:43:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:43:59,345 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:43:59,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:43:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:43:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:59,698 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:43:59,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:43:59,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:43:59,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-24 16:43:59,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:43:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:43:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:43:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 16:43:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:43:59,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:43:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:43:59,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:59,810 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:43:59,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:43:59,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:43:59,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 16:43:59,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:43:59,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:43:59,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:43:59,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:43:59,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:43:59,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:43:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:43:59,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:59,827 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:43:59,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:43:59,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:43:59,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:43:59,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:43:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:43:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:43:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:43:59,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:43:59,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:43:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:43:59,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:59,844 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:43:59,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:43:59,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:43:59,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 16:43:59,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:43:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:43:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:43:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:43:59,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:43:59,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:43:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:43:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:59,854 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:43:59,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:43:59,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:43:59,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:43:59,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:43:59,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:43:59,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:43:59,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:43:59,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:43:59,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:43:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:43:59,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:59,862 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:43:59,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:43:59,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:43:59,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:43:59,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:43:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:43:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:43:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:43:59,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:43:59,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:43:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:43:59,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:43:59,872 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:43:59,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:43:59,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:43:59,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:43:59,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:43:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:43:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:43:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:43:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:43:59,914 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 16:43:59,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458995346] [2020-09-24 16:43:59,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:43:59,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:43:59,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839324663] [2020-09-24 16:43:59,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:43:59,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:43:59,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:43:59,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:43:59,964 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2020-09-24 16:44:00,639 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:44:01,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:44:01,647 INFO L93 Difference]: Finished difference Result 419 states and 501 transitions. [2020-09-24 16:44:01,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:44:01,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-24 16:44:01,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:44:01,671 INFO L225 Difference]: With dead ends: 419 [2020-09-24 16:44:01,671 INFO L226 Difference]: Without dead ends: 266 [2020-09-24 16:44:01,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:44:01,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-24 16:44:01,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 227. [2020-09-24 16:44:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-24 16:44:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 244 transitions. [2020-09-24 16:44:01,785 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 244 transitions. Word has length 142 [2020-09-24 16:44:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:44:01,787 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 244 transitions. [2020-09-24 16:44:01,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:44:01,787 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 244 transitions. [2020-09-24 16:44:01,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-24 16:44:01,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:44:01,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:44:01,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:44:01,793 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:44:01,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:44:01,794 INFO L82 PathProgramCache]: Analyzing trace with hash 982393685, now seen corresponding path program 1 times [2020-09-24 16:44:01,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:44:01,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403642413] [2020-09-24 16:44:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:44:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:02,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:02,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:05,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:06,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:06,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking...