/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:54:29,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:54:29,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:54:29,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:54:29,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:54:29,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:54:29,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:54:29,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:54:29,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:54:29,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:54:29,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:54:29,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:54:29,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:54:29,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:54:29,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:54:29,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:54:29,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:54:29,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:54:29,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:54:29,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:54:29,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:54:29,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:54:29,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:54:29,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:54:29,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:54:29,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:54:29,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:54:29,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:54:29,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:54:29,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:54:29,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:54:29,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:54:29,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:54:29,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:54:29,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:54:29,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:54:29,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:54:29,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:54:29,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:54:29,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:54:29,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:54:29,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:54:29,385 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:54:29,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:54:29,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:54:29,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:54:29,387 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:54:29,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:54:29,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:54:29,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:54:29,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:54:29,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:54:29,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:54:29,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:54:29,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:54:29,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:54:29,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:54:29,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:54:29,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:54:29,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:54:29,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:54:29,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:54:29,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:54:29,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:54:29,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:54:29,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:54:29,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:54:29,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:54:29,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:54:29,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:54:29,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:54:29,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 16:54:29,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:54:29,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:54:29,859 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:54:29,861 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:54:29,861 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:54:29,863 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-09-24 16:54:29,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8372876e7/dc1acff8e96941bf8c60b58ed5a47f4e/FLAG26f2164e0 [2020-09-24 16:54:30,580 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:54:30,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-09-24 16:54:30,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8372876e7/dc1acff8e96941bf8c60b58ed5a47f4e/FLAG26f2164e0 [2020-09-24 16:54:30,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8372876e7/dc1acff8e96941bf8c60b58ed5a47f4e [2020-09-24 16:54:30,854 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:54:30,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:54:30,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:54:30,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:54:30,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:54:30,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:54:30" (1/1) ... [2020-09-24 16:54:30,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366b14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:30, skipping insertion in model container [2020-09-24 16:54:30,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:54:30" (1/1) ... [2020-09-24 16:54:30,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:54:30,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:54:31,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:54:31,416 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:54:31,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:54:31,580 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:54:31,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:31 WrapperNode [2020-09-24 16:54:31,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:54:31,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:54:31,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:54:31,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:54:31,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:31" (1/1) ... [2020-09-24 16:54:31,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:31" (1/1) ... [2020-09-24 16:54:31,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:31" (1/1) ... [2020-09-24 16:54:31,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:31" (1/1) ... [2020-09-24 16:54:31,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:31" (1/1) ... [2020-09-24 16:54:31,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:31" (1/1) ... [2020-09-24 16:54:31,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:31" (1/1) ... [2020-09-24 16:54:31,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:54:31,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:54:31,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:54:31,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:54:31,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:54:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:54:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:54:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:54:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:54:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:54:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:54:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:54:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:54:31,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:54:31,807 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:54:31,807 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:54:31,807 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:54:31,807 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:54:31,808 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:54:31,808 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:54:31,808 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:54:31,808 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:54:31,808 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:54:31,809 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:54:31,809 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:54:31,809 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:54:31,809 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:54:31,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:54:31,810 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:54:31,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:54:31,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 16:54:31,810 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:54:31,810 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:54:31,811 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:54:31,811 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:54:31,811 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:54:31,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:54:31,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:54:31,811 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:54:31,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 16:54:31,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:54:31,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:54:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:54:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:54:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:54:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:54:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:54:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:54:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:54:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:54:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:54:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:54:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:54:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:54:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:54:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:54:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:54:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:54:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:54:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:54:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:54:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:54:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:54:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:54:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:54:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:54:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:54:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:54:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:54:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:54:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:54:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:54:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:54:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:54:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:54:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:54:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:54:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:54:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:54:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:54:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 16:54:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:54:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:54:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:54:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:54:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:54:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:54:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 16:54:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:54:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:54:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:54:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:54:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:54:33,000 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:54:33,000 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:54:33,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:54:33 BoogieIcfgContainer [2020-09-24 16:54:33,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:54:33,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:54:33,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:54:33,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:54:33,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:54:30" (1/3) ... [2020-09-24 16:54:33,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35501a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:54:33, skipping insertion in model container [2020-09-24 16:54:33,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:31" (2/3) ... [2020-09-24 16:54:33,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35501a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:54:33, skipping insertion in model container [2020-09-24 16:54:33,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:54:33" (3/3) ... [2020-09-24 16:54:33,019 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2020-09-24 16:54:33,031 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:54:33,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:54:33,069 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:54:33,106 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:54:33,107 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:54:33,107 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:54:33,107 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:54:33,107 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:54:33,108 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:54:33,108 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:54:33,108 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:54:33,140 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states. [2020-09-24 16:54:33,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:54:33,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:54:33,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:54:33,161 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:54:33,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:54:33,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1598852952, now seen corresponding path program 1 times [2020-09-24 16:54:33,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:54:33,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775940656] [2020-09-24 16:54:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:54:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:33,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:33,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:35,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:35,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:55,178 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:55,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:54:55,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:54:55,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21624 [2020-09-24 16:54:55,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 16:54:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:55,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:54:55,566 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:54:55,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:54:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:55,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:55,730 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:55,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:54:55,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:55,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-24 16:54:55,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:55,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:54:55,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:54:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:55,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:55,845 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:55,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:55,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:54:55,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:55,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:54:55,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:54:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:55,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:55,859 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:55,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:55,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:55,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:54:55,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:55,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:55,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:55,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:55,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:54:55,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:54:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:55,873 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:55,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:55,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:55,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:54:55,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:55,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:55,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:55,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:55,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:54:55,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:54:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:55,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:55,883 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:55,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:54:55,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:54:55,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:54:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:55,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:54:55,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:54:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:55,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:55,892 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:55,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:55,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:55,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:54:55,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:55,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:55,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:54:55,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:55,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:54:55,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:54:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:55,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:55,905 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:54:55,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:54:55,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:54:55,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:54:55,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:54:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:54:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:54:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:54:55,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:54:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:54:55,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775940656] [2020-09-24 16:54:55,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:54:55,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:54:55,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633097246] [2020-09-24 16:54:55,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:54:55,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:54:56,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:54:56,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:54:56,007 INFO L87 Difference]: Start difference. First operand 278 states. Second operand 3 states. [2020-09-24 16:54:57,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:54:57,349 INFO L93 Difference]: Finished difference Result 419 states and 501 transitions. [2020-09-24 16:54:57,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:54:57,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-24 16:54:57,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:54:57,387 INFO L225 Difference]: With dead ends: 419 [2020-09-24 16:54:57,387 INFO L226 Difference]: Without dead ends: 266 [2020-09-24 16:54:57,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 16:54:57,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-24 16:54:57,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 227. [2020-09-24 16:54:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-24 16:54:57,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 245 transitions. [2020-09-24 16:54:57,566 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 245 transitions. Word has length 142 [2020-09-24 16:54:57,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:54:57,567 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 245 transitions. [2020-09-24 16:54:57,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:54:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 245 transitions. [2020-09-24 16:54:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 16:54:57,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:54:57,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:54:57,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:54:57,573 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:54:57,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:54:57,574 INFO L82 PathProgramCache]: Analyzing trace with hash -469194886, now seen corresponding path program 1 times [2020-09-24 16:54:57,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:54:57,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635363356] [2020-09-24 16:54:57,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:54:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:54:57,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:57,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:58,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:54:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:02,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking...