/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 --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_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:10:31,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:10:31,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:10:31,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:10:31,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:10:31,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:10:31,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:10:31,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:10:31,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:10:31,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:10:31,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:10:31,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:10:31,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:10:31,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:10:31,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:10:31,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:10:31,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:10:31,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:10:31,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:10:31,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:10:31,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:10:31,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:10:31,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:10:31,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:10:31,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:10:31,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:10:31,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:10:31,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:10:31,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:10:31,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:10:31,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:10:31,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:10:31,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:10:31,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:10:31,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:10:31,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:10:31,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:10:31,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:10:31,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:10:31,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:10:31,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:10:31,502 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 [2020-09-21 11:10:31,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:10:31,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:10:31,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:10:31,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:10:31,553 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:10:31,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:10:31,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:10:31,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:10:31,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:10:31,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:10:31,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:10:31,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:10:31,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:10:31,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:10:31,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:10:31,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:10:31,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:10:31,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:10:31,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:10:31,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:10:31,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:10:31,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:10:31,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:10:31,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:10:31,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:10:31,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:10:31,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:10:31,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:10:31,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:10:31,559 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.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; [2020-09-21 11:10:31,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:10:32,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:10:32,010 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:10:32,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:10:32,013 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:10:32,014 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c [2020-09-21 11:10:32,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a1e96b3f/64a3a69c46114ca2a37edf82e445ee00/FLAG4cf0c5b1f [2020-09-21 11:10:32,735 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:10:32,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c [2020-09-21 11:10:32,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a1e96b3f/64a3a69c46114ca2a37edf82e445ee00/FLAG4cf0c5b1f [2020-09-21 11:10:33,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a1e96b3f/64a3a69c46114ca2a37edf82e445ee00 [2020-09-21 11:10:33,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:10:33,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:10:33,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:10:33,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:10:33,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:10:33,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:10:33" (1/1) ... [2020-09-21 11:10:33,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae2094d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:33, skipping insertion in model container [2020-09-21 11:10:33,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:10:33" (1/1) ... [2020-09-21 11:10:33,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:10:33,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:10:33,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:10:33,634 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:10:33,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:10:33,752 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:10:33,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:33 WrapperNode [2020-09-21 11:10:33,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:10:33,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:10:33,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:10:33,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:10:33,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:33" (1/1) ... [2020-09-21 11:10:33,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:33" (1/1) ... [2020-09-21 11:10:33,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:33" (1/1) ... [2020-09-21 11:10:33,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:33" (1/1) ... [2020-09-21 11:10:33,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:33" (1/1) ... [2020-09-21 11:10:33,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:33" (1/1) ... [2020-09-21 11:10:33,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:33" (1/1) ... [2020-09-21 11:10:33,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:10:33,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:10:33,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:10:33,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:10:33,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:33" (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 [2020-09-21 11:10:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:10:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:10:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 11:10:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 11:10:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 11:10:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 11:10:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 11:10:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 11:10:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 11:10:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 11:10:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 11:10:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 11:10:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 11:10:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 11:10:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 11:10:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 11:10:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 11:10:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 11:10:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 11:10:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 11:10:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 11:10:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 11:10:33,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 11:10:33,931 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 11:10:33,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:10:33,931 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 11:10:33,931 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 11:10:33,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 11:10:33,932 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 11:10:33,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:10:33,932 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 11:10:33,932 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 11:10:33,932 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 11:10:33,932 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 11:10:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 11:10:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 11:10:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 11:10:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 11:10:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 11:10:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 11:10:33,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 11:10:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:10:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:10:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 11:10:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 11:10:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 11:10:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 11:10:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 11:10:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 11:10:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 11:10:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 11:10:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 11:10:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:10:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 11:10:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 11:10:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 11:10:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 11:10:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 11:10:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 11:10:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 11:10:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 11:10:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:10:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 11:10:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 11:10:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 11:10:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 11:10:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 11:10:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 11:10:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 11:10:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 11:10:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 11:10:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 11:10:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 11:10:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 11:10:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 11:10:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:10:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 11:10:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 11:10:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:10:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:10:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 11:10:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:10:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:10:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:10:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:10:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 11:10:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:10:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 11:10:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 11:10:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:10:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 11:10:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 11:10:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 11:10:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:10:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:10:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:10:35,020 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:10:35,021 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:10:35,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:10:35 BoogieIcfgContainer [2020-09-21 11:10:35,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:10:35,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:10:35,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:10:35,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:10:35,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:10:33" (1/3) ... [2020-09-21 11:10:35,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657673b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:10:35, skipping insertion in model container [2020-09-21 11:10:35,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:33" (2/3) ... [2020-09-21 11:10:35,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657673b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:10:35, skipping insertion in model container [2020-09-21 11:10:35,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:10:35" (3/3) ... [2020-09-21 11:10:35,043 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product51.cil.c [2020-09-21 11:10:35,054 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:10:35,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:10:35,091 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:10:35,134 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:10:35,134 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:10:35,134 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:10:35,134 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:10:35,134 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:10:35,135 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:10:35,135 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:10:35,136 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:10:35,168 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-09-21 11:10:35,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 11:10:35,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:35,181 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] [2020-09-21 11:10:35,182 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:35,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:35,190 INFO L82 PathProgramCache]: Analyzing trace with hash 640895003, now seen corresponding path program 1 times [2020-09-21 11:10:35,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:35,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736639831] [2020-09-21 11:10:35,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:35,520 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:35,520 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:35,520 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:35,520 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:35,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 11:10:35,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:35,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:10:35,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:35,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:10:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:35,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:35,932 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:35,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:35,948 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:35,949 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:35,949 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:35,949 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:35,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:35,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:35,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:35,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:35,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:36,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:36,044 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:36,044 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:36,044 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:36,045 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:36,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:36,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:36,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:36,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:36,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:36,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:36,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:36,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:36,051 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:36,051 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:36,052 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:36,052 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:36,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:36,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:36,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:36,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:36,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:36,059 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:36,060 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:36,060 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:36,060 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:36,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:36,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:36,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:36,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:36,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:36,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:36,068 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:36,068 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:36,069 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:36,069 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:36,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:36,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:36,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:36,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:10:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:36,077 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:36,077 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:36,078 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:36,078 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:36,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:36,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:36,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:36,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:36,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:36,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:10:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:36,096 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:36,097 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:36,097 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:36,098 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:36,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:36,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:36,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:36,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:36,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:36,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:10:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:36,136 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:36,136 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:36,137 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:36,137 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:36,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:36,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:36,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:36,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:36,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:36,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736639831] [2020-09-21 11:10:36,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:36,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:10:36,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878910366] [2020-09-21 11:10:36,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:10:36,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:36,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:10:36,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:10:36,190 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-09-21 11:10:37,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:37,343 INFO L93 Difference]: Finished difference Result 323 states and 421 transitions. [2020-09-21 11:10:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:10:37,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 11:10:37,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:37,363 INFO L225 Difference]: With dead ends: 323 [2020-09-21 11:10:37,363 INFO L226 Difference]: Without dead ends: 174 [2020-09-21 11:10:37,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:10:37,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-21 11:10:37,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2020-09-21 11:10:37,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-21 11:10:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2020-09-21 11:10:37,505 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 52 [2020-09-21 11:10:37,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:37,505 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2020-09-21 11:10:37,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:10:37,506 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2020-09-21 11:10:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 11:10:37,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:37,512 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] [2020-09-21 11:10:37,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:10:37,513 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:37,513 INFO L82 PathProgramCache]: Analyzing trace with hash -61253498, now seen corresponding path program 1 times [2020-09-21 11:10:37,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:37,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753526787] [2020-09-21 11:10:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:37,579 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:37,579 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:37,579 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:37,580 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:37,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 11:10:37,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:37,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:10:37,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:37,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:37,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 11:10:37,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:10:37,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:37,856 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:37,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:37,865 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:37,865 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:37,865 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:37,865 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:37,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:37,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:37,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:37,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:37,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:37,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:37,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:37,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:37,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:37,902 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:37,903 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:37,903 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:37,903 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:37,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:37,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:37,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:37,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:37,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:37,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:37,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:37,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:37,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:37,907 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:37,907 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:37,907 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:37,908 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:37,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:37,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:37,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:37,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:37,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:37,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:37,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:37,911 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:37,912 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:37,912 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:37,912 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:37,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:37,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:37,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:37,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:37,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:37,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:37,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:37,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:37,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:37,916 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:37,916 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:37,917 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:37,917 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:37,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:37,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:37,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:37,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:37,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:37,921 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:37,921 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:37,921 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:37,921 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:37,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:37,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:37,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:37,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:37,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:37,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:37,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:37,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:10:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:37,926 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:37,926 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:37,926 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:37,927 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:37,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:37,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:37,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:37,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:37,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:37,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:37,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:37,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:37,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 11:10:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:37,931 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:37,931 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:37,931 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:37,931 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:37,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:37,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:37,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:37,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:37,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:37,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:37,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753526787] [2020-09-21 11:10:37,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:37,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:37,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141877878] [2020-09-21 11:10:37,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:37,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:37,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:37,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:37,944 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 4 states. [2020-09-21 11:10:38,391 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:10:39,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:39,288 INFO L93 Difference]: Finished difference Result 250 states and 304 transitions. [2020-09-21 11:10:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:39,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 11:10:39,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:39,292 INFO L225 Difference]: With dead ends: 250 [2020-09-21 11:10:39,293 INFO L226 Difference]: Without dead ends: 158 [2020-09-21 11:10:39,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:10:39,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-21 11:10:39,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-09-21 11:10:39,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-21 11:10:39,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2020-09-21 11:10:39,331 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 53 [2020-09-21 11:10:39,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:39,331 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2020-09-21 11:10:39,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:39,332 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2020-09-21 11:10:39,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:10:39,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:39,334 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] [2020-09-21 11:10:39,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:10:39,334 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:39,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:39,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2048791527, now seen corresponding path program 1 times [2020-09-21 11:10:39,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:39,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110292045] [2020-09-21 11:10:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:39,810 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:10:39,810 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:39,810 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:39,810 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:39,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 11:10:39,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:39,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-09-21 11:10:39,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:39,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:10:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-21 11:10:39,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:40,137 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:40,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:40,209 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:40,209 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:40,209 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:40,209 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:40,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:40,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:40,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 11:10:40,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:40,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:40,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:40,253 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:40,254 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:40,254 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:40,254 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:40,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:40,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:40,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:40,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:40,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:40,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:40,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:40,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:40,260 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:40,260 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:40,260 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:40,260 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:40,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:40,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:40,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:40,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:40,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:40,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:40,267 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:40,267 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:40,267 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:40,267 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:40,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:40,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:40,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:40,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:40,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:40,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:40,273 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:40,274 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:40,274 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:40,274 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:40,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:40,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:40,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:40,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:40,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:40,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:10:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:40,279 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:40,279 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:40,279 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:40,279 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:40,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:40,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:40,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:40,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:40,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:40,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:10:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:40,284 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:40,284 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:40,284 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:40,284 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:40,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:40,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:40,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:10:40,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:40,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:40,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 11:10:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:40,288 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:40,289 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:40,289 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:40,289 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:40,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:40,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:40,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:40,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:40,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:40,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:40,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:40,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:40,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110292045] [2020-09-21 11:10:40,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:40,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:40,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576488289] [2020-09-21 11:10:40,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:40,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:40,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:40,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:40,303 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 4 states. [2020-09-21 11:10:40,628 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:42,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:42,268 INFO L93 Difference]: Finished difference Result 384 states and 473 transitions. [2020-09-21 11:10:42,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:42,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-21 11:10:42,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:42,275 INFO L225 Difference]: With dead ends: 384 [2020-09-21 11:10:42,275 INFO L226 Difference]: Without dead ends: 277 [2020-09-21 11:10:42,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:10:42,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-09-21 11:10:42,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 232. [2020-09-21 11:10:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-09-21 11:10:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 277 transitions. [2020-09-21 11:10:42,338 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 277 transitions. Word has length 57 [2020-09-21 11:10:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:42,339 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 277 transitions. [2020-09-21 11:10:42,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 277 transitions. [2020-09-21 11:10:42,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-21 11:10:42,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:42,342 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] [2020-09-21 11:10:42,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:10:42,342 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:42,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:42,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1441609457, now seen corresponding path program 1 times [2020-09-21 11:10:42,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:42,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086388359] [2020-09-21 11:10:42,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:42,792 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:42,792 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:42,793 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:42,793 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:42,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 11:10:42,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-21 11:10:42,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:10:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 11:10:42,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:43,207 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:43,317 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:43,317 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:43,317 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:43,318 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:43,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:43,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:43,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-21 11:10:43,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:43,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:43,353 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:43,353 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:43,353 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:43,353 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:43,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:43,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:43,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:43,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:43,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:43,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:43,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:43,361 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:43,361 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:43,362 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:43,362 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:43,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:43,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:43,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:43,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:43,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:43,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:43,371 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:43,371 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:43,372 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:43,372 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:43,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:43,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:43,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:10:43,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:43,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:43,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:43,378 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:43,378 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:43,378 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:43,379 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:43,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:43,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:43,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:43,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:43,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:43,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:43,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:43,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:43,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:43,404 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:43,404 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:43,405 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:43,405 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:43,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:10:43,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:43,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:43,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:43,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:43,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:43,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:10:43,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:43,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:10:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:43,414 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:43,415 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:43,415 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:43,415 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:43,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:43,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:43,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:43,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:43,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:43,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:43,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 11:10:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:43,422 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:43,423 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:43,423 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:43,423 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:43,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:43,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:43,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:10:43,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:43,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:10:43,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:43,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:43,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:43,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 11:10:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:43,439 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:43,439 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:43,440 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:43,440 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:43,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:43,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:43,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:43,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:43,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:43,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086388359] [2020-09-21 11:10:43,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:43,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:10:43,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809923736] [2020-09-21 11:10:43,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:10:43,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:43,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:10:43,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:10:43,455 INFO L87 Difference]: Start difference. First operand 232 states and 277 transitions. Second operand 8 states. [2020-09-21 11:10:43,866 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:45,426 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:45,914 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:46,242 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:46,535 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:47,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:47,441 INFO L93 Difference]: Finished difference Result 716 states and 932 transitions. [2020-09-21 11:10:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:10:47,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-21 11:10:47,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:47,472 INFO L225 Difference]: With dead ends: 716 [2020-09-21 11:10:47,472 INFO L226 Difference]: Without dead ends: 508 [2020-09-21 11:10:47,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:10:47,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-09-21 11:10:47,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 443. [2020-09-21 11:10:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-09-21 11:10:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 539 transitions. [2020-09-21 11:10:47,566 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 539 transitions. Word has length 63 [2020-09-21 11:10:47,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:47,567 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 539 transitions. [2020-09-21 11:10:47,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:10:47,567 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 539 transitions. [2020-09-21 11:10:47,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 11:10:47,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:47,570 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] [2020-09-21 11:10:47,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:10:47,571 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:47,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:47,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1951258889, now seen corresponding path program 1 times [2020-09-21 11:10:47,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:47,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681662247] [2020-09-21 11:10:47,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:10:47,636 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:10:47,636 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:10:47,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:10:47,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:10:47 BoogieIcfgContainer [2020-09-21 11:10:47,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:10:47,668 INFO L168 Benchmark]: Toolchain (without parser) took 14645.55 ms. Allocated memory was 140.5 MB in the beginning and 493.9 MB in the end (delta: 353.4 MB). Free memory was 103.0 MB in the beginning and 386.4 MB in the end (delta: -283.4 MB). Peak memory consumption was 69.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:47,669 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:10:47,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.88 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.3 MB in the beginning and 167.8 MB in the end (delta: -65.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:47,671 INFO L168 Benchmark]: Boogie Preprocessor took 94.67 ms. Allocated memory is still 202.9 MB. Free memory was 167.8 MB in the beginning and 163.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:47,672 INFO L168 Benchmark]: RCFGBuilder took 1182.85 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 163.6 MB in the beginning and 189.0 MB in the end (delta: -25.4 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:47,673 INFO L168 Benchmark]: TraceAbstraction took 12632.54 ms. Allocated memory was 234.9 MB in the beginning and 493.9 MB in the end (delta: 259.0 MB). Free memory was 189.0 MB in the beginning and 386.4 MB in the end (delta: -197.4 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:47,677 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 726.88 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.3 MB in the beginning and 167.8 MB in the end (delta: -65.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.67 ms. Allocated memory is still 202.9 MB. Free memory was 167.8 MB in the beginning and 163.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1182.85 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 163.6 MB in the beginning and 189.0 MB in the end (delta: -25.4 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12632.54 ms. Allocated memory was 234.9 MB in the beginning and 493.9 MB in the end (delta: 259.0 MB). Free memory was 189.0 MB in the beginning and 386.4 MB in the end (delta: -197.4 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 977]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L225] int pumpRunning = 0; [L226] int systemActive = 1; [L473] int cleanupTimeShifts = 4; [L776] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L549] int retValue_acc ; [L550] int tmp ; [L554] FCALL select_helpers() [L555] FCALL select_features() [L556] CALL, EXPR valid_product() [L598] int retValue_acc ; [L601] retValue_acc = 1 [L602] return (retValue_acc); [L556] RET, EXPR valid_product() [L556] tmp = valid_product() [L558] COND TRUE \read(tmp) [L560] FCALL setup() [L561] CALL runTest() [L540] CALL test() [L155] int splverifierCounter ; [L156] int tmp ; [L157] int tmp___0 ; [L158] int tmp___1 ; [L159] int tmp___2 ; [L162] splverifierCounter = 0 [L164] COND TRUE 1 [L166] COND TRUE splverifierCounter < 4 [L172] tmp = __VERIFIER_nondet_int() [L174] COND TRUE \read(tmp) [L176] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L176] RET waterRise() [L182] tmp___0 = __VERIFIER_nondet_int() [L184] COND FALSE !(\read(tmp___0)) [L192] tmp___2 = __VERIFIER_nondet_int() [L194] COND FALSE !(\read(tmp___2)) [L198] tmp___1 = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp___1) [L202] CALL stopSystem() [L426] COND FALSE !(\read(pumpRunning)) [L433] systemActive = 0 [L202] RET stopSystem() [L209] CALL timeShift() [L233] COND FALSE !(\read(pumpRunning)) [L240] COND FALSE !(\read(systemActive)) [L248] CALL __utac_acc__Specification3_spec__1() [L440] int tmp ; [L441] int tmp___0 ; [L442] int tmp___1 ; [L446] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L446] RET, EXPR isMethaneLevelCritical() [L446] tmp = isMethaneLevelCritical() [L448] COND FALSE !(\read(tmp)) [L452] CALL, EXPR getWaterLevel() [L119] int retValue_acc ; [L122] retValue_acc = waterLevel [L123] return (retValue_acc); [L452] RET, EXPR getWaterLevel() [L452] tmp___0 = getWaterLevel() [L454] COND TRUE tmp___0 == 2 [L456] CALL, EXPR isPumpRunning() [L340] int retValue_acc ; [L343] retValue_acc = pumpRunning [L344] return (retValue_acc); [L456] RET, EXPR isPumpRunning() [L456] tmp___1 = isPumpRunning() [L458] COND FALSE !(\read(tmp___1)) [L462] CALL __automaton_fail() [L977] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 244 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 526 SDtfs, 672 SDslu, 249 SDs, 0 SdLazy, 1355 SolverSat, 364 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=443occurred 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, 171 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 60460 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...