/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:47:24,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:47:24,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:47:24,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:47:24,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:47:24,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:47:24,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:47:24,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:47:24,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:47:24,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:47:24,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:47:24,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:47:24,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:47:24,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:47:24,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:47:24,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:47:24,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:47:24,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:47:24,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:47:24,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:47:24,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:47:24,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:47:24,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:47:24,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:47:24,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:47:24,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:47:24,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:47:24,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:47:24,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:47:24,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:47:24,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:47:24,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:47:24,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:47:24,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:47:24,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:47:24,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:47:24,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:47:24,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:47:24,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:47:24,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:47:24,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:47:24,807 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 15:47:24,834 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:47:24,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:47:24,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:47:24,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:47:24,836 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:47:24,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:47:24,836 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:47:24,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:47:24,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:47:24,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:47:24,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:47:24,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:47:24,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:47:24,837 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:47:24,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:47:24,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:47:24,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:47:24,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:47:24,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:47:24,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:47:24,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:47:24,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:47:24,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:47:24,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:47:24,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:47:24,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:47:24,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:47:24,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:47:24,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:47:24,846 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:47:25,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:47:25,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:47:25,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:47:25,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:47:25,323 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:47:25,324 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product52.cil.c [2020-09-24 15:47:25,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ff1f755d/3b8bcda24fd144319ef666d890fd05ec/FLAG519c0df4d [2020-09-24 15:47:26,073 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:47:26,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product52.cil.c [2020-09-24 15:47:26,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ff1f755d/3b8bcda24fd144319ef666d890fd05ec/FLAG519c0df4d [2020-09-24 15:47:26,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ff1f755d/3b8bcda24fd144319ef666d890fd05ec [2020-09-24 15:47:26,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:47:26,347 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:47:26,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:47:26,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:47:26,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:47:26,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:47:26" (1/1) ... [2020-09-24 15:47:26,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:26, skipping insertion in model container [2020-09-24 15:47:26,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:47:26" (1/1) ... [2020-09-24 15:47:26,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:47:26,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:47:26,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:47:27,018 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:47:27,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:47:27,196 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:47:27,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:27 WrapperNode [2020-09-24 15:47:27,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:47:27,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:47:27,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:47:27,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:47:27,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:27" (1/1) ... [2020-09-24 15:47:27,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:27" (1/1) ... [2020-09-24 15:47:27,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:27" (1/1) ... [2020-09-24 15:47:27,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:27" (1/1) ... [2020-09-24 15:47:27,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:27" (1/1) ... [2020-09-24 15:47:27,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:27" (1/1) ... [2020-09-24 15:47:27,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:27" (1/1) ... [2020-09-24 15:47:27,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:47:27,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:47:27,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:47:27,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:47:27,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:27" (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 15:47:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:47:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:47:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 15:47:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 15:47:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 15:47:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 15:47:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 15:47:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 15:47:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 15:47:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 15:47:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 15:47:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 15:47:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 15:47:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 15:47:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 15:47:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 15:47:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 15:47:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 15:47:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 15:47:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 15:47:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 15:47:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 15:47:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 15:47:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 15:47:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 15:47:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 15:47:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 15:47:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 15:47:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 15:47:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 15:47:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 15:47:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 15:47:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 15:47:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 15:47:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 15:47:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 15:47:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 15:47:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 15:47:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 15:47:27,395 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 15:47:27,395 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 15:47:27,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:47:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:47:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:47:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 15:47:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 15:47:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 15:47:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 15:47:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 15:47:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 15:47:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 15:47:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 15:47:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 15:47:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 15:47:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 15:47:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 15:47:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:47:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 15:47:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 15:47:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 15:47:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 15:47:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 15:47:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 15:47:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:47:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 15:47:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 15:47:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:47:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 15:47:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 15:47:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:47:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 15:47:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 15:47:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 15:47:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 15:47:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 15:47:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 15:47:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 15:47:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 15:47:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 15:47:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 15:47:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 15:47:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 15:47:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 15:47:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 15:47:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 15:47:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 15:47:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 15:47:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 15:47:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 15:47:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 15:47:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 15:47:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 15:47:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 15:47:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 15:47:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:47:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:47:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 15:47:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:47:28,772 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:47:28,772 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 15:47:28,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:47:28 BoogieIcfgContainer [2020-09-24 15:47:28,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:47:28,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:47:28,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:47:28,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:47:28,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:47:26" (1/3) ... [2020-09-24 15:47:28,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306de133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:47:28, skipping insertion in model container [2020-09-24 15:47:28,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:27" (2/3) ... [2020-09-24 15:47:28,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306de133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:47:28, skipping insertion in model container [2020-09-24 15:47:28,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:47:28" (3/3) ... [2020-09-24 15:47:28,790 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product52.cil.c [2020-09-24 15:47:28,804 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:47:28,815 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:47:28,839 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:47:28,875 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:47:28,875 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:47:28,875 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:47:28,876 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:47:28,876 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:47:28,876 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:47:28,876 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:47:28,876 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:47:28,906 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states. [2020-09-24 15:47:28,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 15:47:28,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:28,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:28,928 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:28,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:28,936 INFO L82 PathProgramCache]: Analyzing trace with hash 71377499, now seen corresponding path program 1 times [2020-09-24 15:47:28,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:28,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996867876] [2020-09-24 15:47:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:29,353 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:29,354 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:29,354 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:29,354 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:29,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 15:47:29,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:29,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:47:29,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 15:47:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:29,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:29,853 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:29,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:29,887 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:29,888 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:29,888 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:29,888 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:29,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:29,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:29,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:47:29,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:29,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:29,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 15:47:30,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,003 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,003 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,003 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,003 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:30,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,008 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,009 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,009 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,009 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:30,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:30,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:30,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:30,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,015 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,015 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,015 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,015 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:30,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:30,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:30,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:30,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,021 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,021 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,022 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,022 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:30,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:30,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 15:47:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,027 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,028 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,028 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,028 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:30,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:30,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 15:47:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,034 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,035 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,035 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,035 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:30,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:30,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:30,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:30,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 15:47:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:30,041 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:30,042 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:30,042 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:30,042 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:30,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:30,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:30,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:30,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:30,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:30,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:30,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:30,071 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 15:47:30,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996867876] [2020-09-24 15:47:30,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:30,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 15:47:30,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676547213] [2020-09-24 15:47:30,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 15:47:30,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:30,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 15:47:30,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:47:30,104 INFO L87 Difference]: Start difference. First operand 339 states. Second operand 3 states. [2020-09-24 15:47:31,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:31,547 INFO L93 Difference]: Finished difference Result 534 states and 633 transitions. [2020-09-24 15:47:31,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 15:47:31,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-24 15:47:31,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:31,588 INFO L225 Difference]: With dead ends: 534 [2020-09-24 15:47:31,588 INFO L226 Difference]: Without dead ends: 326 [2020-09-24 15:47:31,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:47:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-09-24 15:47:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 282. [2020-09-24 15:47:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-09-24 15:47:31,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 307 transitions. [2020-09-24 15:47:31,704 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 307 transitions. Word has length 153 [2020-09-24 15:47:31,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:31,706 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 307 transitions. [2020-09-24 15:47:31,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 15:47:31,706 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 307 transitions. [2020-09-24 15:47:31,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 15:47:31,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:31,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:31,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:47:31,712 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:31,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1758648365, now seen corresponding path program 1 times [2020-09-24 15:47:31,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:31,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292585789] [2020-09-24 15:47:31,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:31,793 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:31,794 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:31,794 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:31,794 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:31,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 15:47:31,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:31,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:47:31,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:31,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:31,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 15:47:31,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 15:47:31,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:32,174 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:32,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:32,185 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:32,186 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:32,186 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:32,186 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:32,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:32,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:32,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:32,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:32,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:32,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:32,240 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:32,240 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:32,241 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:32,241 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:32,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:32,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:32,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:32,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:32,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:32,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:32,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:32,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:32,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:32,247 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:32,247 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:32,247 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:32,247 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:32,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:32,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:32,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:32,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:32,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:32,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:32,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:32,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:32,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:32,254 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:32,255 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:32,255 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:32,255 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:32,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:32,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:32,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:32,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:32,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:32,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:32,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:32,260 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:32,260 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:32,260 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:32,261 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:32,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:32,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:32,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:32,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:32,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:32,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 15:47:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:32,265 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:32,265 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:32,266 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:32,266 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:32,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:32,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:32,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:32,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:32,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:32,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 15:47:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:32,276 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:32,277 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:32,277 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:32,277 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:32,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:32,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:32,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:32,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:32,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:32,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:32,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 15:47:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:32,285 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:32,285 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:32,285 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:32,285 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:32,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:32,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:32,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:32,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:32,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:32,314 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 15:47:32,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292585789] [2020-09-24 15:47:32,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:32,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:47:32,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444026640] [2020-09-24 15:47:32,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:47:32,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:32,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:47:32,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:47:32,319 INFO L87 Difference]: Start difference. First operand 282 states and 307 transitions. Second operand 4 states. [2020-09-24 15:47:33,021 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:47:34,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:34,187 INFO L93 Difference]: Finished difference Result 441 states and 496 transitions. [2020-09-24 15:47:34,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:47:34,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-24 15:47:34,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:34,194 INFO L225 Difference]: With dead ends: 441 [2020-09-24 15:47:34,194 INFO L226 Difference]: Without dead ends: 309 [2020-09-24 15:47:34,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 15:47:34,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-09-24 15:47:34,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 272. [2020-09-24 15:47:34,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-24 15:47:34,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 294 transitions. [2020-09-24 15:47:34,242 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 294 transitions. Word has length 154 [2020-09-24 15:47:34,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:34,243 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 294 transitions. [2020-09-24 15:47:34,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:47:34,243 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 294 transitions. [2020-09-24 15:47:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 15:47:34,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:34,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:34,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:47:34,247 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:34,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:34,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1306567739, now seen corresponding path program 1 times [2020-09-24 15:47:34,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:34,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910378632] [2020-09-24 15:47:34,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,320 FATAL L256 erpolLogProxyWrapper]: Difference in size: 5 [2020-09-24 15:47:34,320 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -42 [2020-09-24 15:47:34,321 FATAL L256 erpolLogProxyWrapper]: Difference in width: 42 [2020-09-24 15:47:34,321 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 15:47:34,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:47:34,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-24 15:47:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:47:34,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:34,609 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:34,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,620 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,621 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,621 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,621 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:34,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:34,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:34,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:34,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:34,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,663 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,664 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,664 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,664 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:34,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:34,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:34,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:34,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:34,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,668 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,669 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,669 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,669 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:34,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:34,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:34,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:34,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:34,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:34,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,673 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,674 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,674 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,674 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:34,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:34,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:34,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,679 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,679 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,680 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,680 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:34,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:34,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:34,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:34,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:34,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:34,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 15:47:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,698 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,698 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,698 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,699 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 15:47:34,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:34,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 15:47:34,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:34,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 15:47:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,705 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,705 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,705 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,706 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:34,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:34,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:34,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:34,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 15:47:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,711 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,711 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,712 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,712 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:34,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:34,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:34,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:34,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-24 15:47:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:34,717 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:34,717 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:34,718 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:34,718 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:34,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:34,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:34,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:34,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:34,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:34,747 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 15:47:34,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910378632] [2020-09-24 15:47:34,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:34,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:47:34,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175722315] [2020-09-24 15:47:34,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:47:34,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:34,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:47:34,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:47:34,750 INFO L87 Difference]: Start difference. First operand 272 states and 294 transitions. Second operand 5 states. [2020-09-24 15:47:35,389 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:37,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:37,390 INFO L93 Difference]: Finished difference Result 666 states and 769 transitions. [2020-09-24 15:47:37,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:47:37,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-24 15:47:37,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:37,397 INFO L225 Difference]: With dead ends: 666 [2020-09-24 15:47:37,397 INFO L226 Difference]: Without dead ends: 504 [2020-09-24 15:47:37,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:47:37,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-09-24 15:47:37,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 424. [2020-09-24 15:47:37,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-09-24 15:47:37,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 469 transitions. [2020-09-24 15:47:37,479 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 469 transitions. Word has length 167 [2020-09-24 15:47:37,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:37,480 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 469 transitions. [2020-09-24 15:47:37,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:47:37,481 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 469 transitions. [2020-09-24 15:47:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 15:47:37,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:37,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:37,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:47:37,485 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:37,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:37,485 INFO L82 PathProgramCache]: Analyzing trace with hash 189083004, now seen corresponding path program 1 times [2020-09-24 15:47:37,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:37,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760774922] [2020-09-24 15:47:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:37,586 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:37,587 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:37,587 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:37,587 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:37,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-24 15:47:37,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:37,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 15:47:37,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:37,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 15:47:37,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 15:47:37,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 15:47:37,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:38,030 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:38,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:38,070 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:38,070 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:38,070 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:38,070 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:38,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:38,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:38,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:38,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:38,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 15:47:38,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:38,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:38,119 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:38,119 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:38,119 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:38,119 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:38,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:38,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:38,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:38,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:38,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:38,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:38,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:38,124 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:38,124 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:38,124 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:38,124 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:38,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:38,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:38,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:38,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:38,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:38,130 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:38,130 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:38,130 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:38,131 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:38,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:38,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:38,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:38,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:38,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:38,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:38,136 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:38,136 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:38,137 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:38,137 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:38,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:38,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:38,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:38,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:38,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:38,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:38,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:38,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:38,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 15:47:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:38,154 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:38,154 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:38,154 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:38,154 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:38,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 15:47:38,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:38,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:38,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:47:38,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:38,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 15:47:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:38,161 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:38,161 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:38,161 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:38,162 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:38,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:38,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:38,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:38,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:38,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 15:47:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:38,170 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:38,171 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:38,171 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:38,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:38,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:38,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:38,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:47:38,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:38,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:47:38,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:38,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:38,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:38,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 15:47:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:38,199 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:38,199 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:38,199 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:38,199 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:38,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:38,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:38,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:38,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:38,237 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 15:47:38,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760774922] [2020-09-24 15:47:38,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:38,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 15:47:38,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162097178] [2020-09-24 15:47:38,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:47:38,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:38,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:47:38,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:47:38,240 INFO L87 Difference]: Start difference. First operand 424 states and 469 transitions. Second operand 9 states. [2020-09-24 15:47:38,776 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:40,889 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:41,171 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:47:41,529 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:41,926 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:42,254 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:47:42,592 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:42,908 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:44,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:44,262 INFO L93 Difference]: Finished difference Result 1146 states and 1402 transitions. [2020-09-24 15:47:44,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 15:47:44,264 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-09-24 15:47:44,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:44,270 INFO L225 Difference]: With dead ends: 1146 [2020-09-24 15:47:44,270 INFO L226 Difference]: Without dead ends: 832 [2020-09-24 15:47:44,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:47:44,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-09-24 15:47:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 709. [2020-09-24 15:47:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-09-24 15:47:44,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 808 transitions. [2020-09-24 15:47:44,399 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 808 transitions. Word has length 172 [2020-09-24 15:47:44,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:44,400 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 808 transitions. [2020-09-24 15:47:44,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 15:47:44,400 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 808 transitions. [2020-09-24 15:47:44,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 15:47:44,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:44,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:44,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:47:44,406 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:44,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:44,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1049977612, now seen corresponding path program 1 times [2020-09-24 15:47:44,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:44,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010894866] [2020-09-24 15:47:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:47:44,503 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:47:44,503 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:47:44,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:47:44,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:47:44 BoogieIcfgContainer [2020-09-24 15:47:44,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:47:44,540 INFO L168 Benchmark]: Toolchain (without parser) took 18196.07 ms. Allocated memory was 146.8 MB in the beginning and 539.5 MB in the end (delta: 392.7 MB). Free memory was 100.7 MB in the beginning and 271.7 MB in the end (delta: -171.0 MB). Peak memory consumption was 221.7 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:44,541 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 146.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 15:47:44,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 849.20 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 100.1 MB in the beginning and 171.7 MB in the end (delta: -71.6 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:44,543 INFO L168 Benchmark]: Boogie Preprocessor took 101.49 ms. Allocated memory is still 202.9 MB. Free memory was 171.7 MB in the beginning and 167.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:44,544 INFO L168 Benchmark]: RCFGBuilder took 1477.23 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 167.6 MB in the beginning and 173.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:44,545 INFO L168 Benchmark]: TraceAbstraction took 15756.71 ms. Allocated memory was 235.9 MB in the beginning and 539.5 MB in the end (delta: 303.6 MB). Free memory was 172.1 MB in the beginning and 271.7 MB in the end (delta: -99.6 MB). Peak memory consumption was 204.0 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:44,549 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 146.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 849.20 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 100.1 MB in the beginning and 171.7 MB in the end (delta: -71.6 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.49 ms. Allocated memory is still 202.9 MB. Free memory was 171.7 MB in the beginning and 167.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1477.23 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 167.6 MB in the beginning and 173.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15756.71 ms. Allocated memory was 235.9 MB in the beginning and 539.5 MB in the end (delta: 303.6 MB). Free memory was 172.1 MB in the beginning and 271.7 MB in the end (delta: -99.6 MB). Peak memory consumption was 204.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 853]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L84] int waterLevel = 1; [L85] int methaneLevelCritical = 0; [L356] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L559] int pumpRunning = 0; [L560] int systemActive = 1; [L896] int cleanupTimeShifts = 4; [L969] int retValue_acc ; [L970] int tmp ; [L974] FCALL select_helpers() [L975] FCALL select_features() [L976] CALL, EXPR valid_product() [L887] int retValue_acc ; [L890] retValue_acc = 1 [L891] return (retValue_acc); [L976] RET, EXPR valid_product() [L976] tmp = valid_product() [L978] COND TRUE \read(tmp) [L980] FCALL setup() [L981] CALL runTest() [L963] CALL test() [L781] int splverifierCounter ; [L782] int tmp ; [L783] int tmp___0 ; [L784] int tmp___1 ; [L785] int tmp___2 ; [L788] splverifierCounter = 0 [L790] COND TRUE 1 [L792] COND TRUE splverifierCounter < 4 [L798] tmp = __VERIFIER_nondet_int() [L800] COND TRUE \read(tmp) [L802] CALL waterRise() [L102] COND TRUE waterLevel < 2 [L103] waterLevel = waterLevel + 1 [L802] RET waterRise() [L808] tmp___0 = __VERIFIER_nondet_int() [L810] COND FALSE !(\read(tmp___0)) [L818] tmp___2 = __VERIFIER_nondet_int() [L820] COND FALSE !(\read(tmp___2)) [L826] tmp___1 = __VERIFIER_nondet_int() [L828] COND TRUE \read(tmp___1) [L830] CALL stopSystem() [L759] COND FALSE !(\read(pumpRunning)) [L766] systemActive = 0 [L830] RET stopSystem() [L837] CALL timeShift() [L566] COND FALSE !(\read(pumpRunning)) [L573] COND FALSE !(\read(systemActive)) [L581] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L123] int retValue_acc ; [L126] retValue_acc = methaneLevelCritical [L127] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L155] int retValue_acc ; [L158] retValue_acc = waterLevel [L159] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L673] int retValue_acc ; [L676] retValue_acc = pumpRunning [L677] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L853] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 653 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1088 SDtfs, 1371 SDslu, 887 SDs, 0 SdLazy, 2412 SolverSat, 447 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=709occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 284 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 823 NumberOfCodeBlocks, 823 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 246656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...