/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 enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:43:55,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:43:55,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:43:55,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:43:55,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:43:55,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:43:55,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:43:55,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:43:55,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:43:55,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:43:55,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:43:55,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:43:55,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:43:55,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:43:55,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:43:55,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:43:55,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:43:55,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:43:55,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:43:55,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:43:55,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:43:55,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:43:55,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:43:55,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:43:55,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:43:55,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:43:55,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:43:55,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:43:55,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:43:55,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:43:55,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:43:55,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:43:55,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:43:55,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:43:55,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:43:55,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:43:55,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:43:55,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:43:55,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:43:55,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:43:55,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:43:55,838 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 [2020-08-19 01:43:55,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:43:55,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:43:55,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:43:55,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:43:55,862 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:43:55,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:43:55,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:43:55,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:43:55,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:43:55,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:43:55,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:43:55,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:43:55,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:43:55,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:43:55,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:43:55,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:43:55,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:43:55,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:43:55,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:43:55,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:43:55,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:43:55,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:43:55,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:43:55,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:43:55,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:43:55,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:43:55,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:43:55,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:43:55,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:43:55,868 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 -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:43:56,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:43:56,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:43:56,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:43:56,211 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:43:56,211 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:43:56,212 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-08-19 01:43:56,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aecce2c5/f1484a13b4024f0c993e094863dc6f9b/FLAGaab8d5641 [2020-08-19 01:43:56,870 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:43:56,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-08-19 01:43:56,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aecce2c5/f1484a13b4024f0c993e094863dc6f9b/FLAGaab8d5641 [2020-08-19 01:43:57,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aecce2c5/f1484a13b4024f0c993e094863dc6f9b [2020-08-19 01:43:57,188 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:43:57,190 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:43:57,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:43:57,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:43:57,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:43:57,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:43:57" (1/1) ... [2020-08-19 01:43:57,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca632cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:57, skipping insertion in model container [2020-08-19 01:43:57,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:43:57" (1/1) ... [2020-08-19 01:43:57,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:43:57,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:43:57,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:43:57,719 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:43:57,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:43:57,871 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:43:57,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:57 WrapperNode [2020-08-19 01:43:57,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:43:57,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:43:57,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:43:57,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:43:57,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:57" (1/1) ... [2020-08-19 01:43:57,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:57" (1/1) ... [2020-08-19 01:43:57,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:57" (1/1) ... [2020-08-19 01:43:57,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:57" (1/1) ... [2020-08-19 01:43:57,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:57" (1/1) ... [2020-08-19 01:43:57,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:57" (1/1) ... [2020-08-19 01:43:57,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:57" (1/1) ... [2020-08-19 01:43:57,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:43:57,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:43:57,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:43:57,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:43:57,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:57" (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 [2020-08-19 01:43:58,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:43:58,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:43:58,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:43:58,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 01:43:58,027 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:43:58,027 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:43:58,027 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:43:58,027 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:43:58,027 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:43:58,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:43:58,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:43:58,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:43:58,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:43:58,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:43:58,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:43:58,028 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:43:58,028 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:43:58,029 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:43:58,029 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:43:58,029 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:43:58,029 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:43:58,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:43:58,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:43:58,030 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:43:58,030 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:43:58,030 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 01:43:58,030 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:43:58,030 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:43:58,030 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:43:58,030 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:43:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:43:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:43:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:43:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:43:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:43:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:43:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:43:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:43:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 01:43:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:43:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:43:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:43:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:43:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:43:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:43:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:43:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 01:43:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:43:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:43:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:43:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:43:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:43:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:43:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:43:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:43:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:43:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:43:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:43:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:43:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:43:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:43:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:43:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:43:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:43:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:43:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:43:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:43:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:43:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:43:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:43:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:43:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:43:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:43:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:43:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:43:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:43:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:43:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:43:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:43:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:43:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 01:43:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:43:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:43:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:43:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:43:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:43:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:43:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 01:43:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:43:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:43:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:43:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:43:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:43:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:43:59,197 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:43:59,198 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:43:59,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:43:59 BoogieIcfgContainer [2020-08-19 01:43:59,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:43:59,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:43:59,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:43:59,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:43:59,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:43:57" (1/3) ... [2020-08-19 01:43:59,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567df8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:43:59, skipping insertion in model container [2020-08-19 01:43:59,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:57" (2/3) ... [2020-08-19 01:43:59,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567df8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:43:59, skipping insertion in model container [2020-08-19 01:43:59,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:43:59" (3/3) ... [2020-08-19 01:43:59,220 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2020-08-19 01:43:59,231 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:43:59,239 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:43:59,250 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:43:59,274 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:43:59,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:43:59,275 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:43:59,275 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:43:59,275 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:43:59,275 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:43:59,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:43:59,276 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:43:59,298 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-19 01:43:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 01:43:59,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:43:59,311 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] [2020-08-19 01:43:59,311 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:43:59,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:43:59,318 INFO L82 PathProgramCache]: Analyzing trace with hash 922466731, now seen corresponding path program 1 times [2020-08-19 01:43:59,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:43:59,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288830290] [2020-08-19 01:43:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:43:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:59,996 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:43:59,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:44:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:00,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:44:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:00,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:44:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:00,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:44:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:00,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:44:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:00,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:44:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:00,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:44:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:44:00,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288830290] [2020-08-19 01:44:00,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:44:00,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:44:00,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705644927] [2020-08-19 01:44:00,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:44:00,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:44:00,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:44:00,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:44:00,150 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-08-19 01:44:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:44:01,262 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2020-08-19 01:44:01,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:44:01,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 01:44:01,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:44:01,279 INFO L225 Difference]: With dead ends: 297 [2020-08-19 01:44:01,279 INFO L226 Difference]: Without dead ends: 160 [2020-08-19 01:44:01,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:44:01,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-19 01:44:01,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-19 01:44:01,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-19 01:44:01,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-19 01:44:01,393 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2020-08-19 01:44:01,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:44:01,394 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-19 01:44:01,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:44:01,394 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-19 01:44:01,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 01:44:01,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:44:01,400 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] [2020-08-19 01:44:01,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:44:01,401 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:44:01,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:44:01,401 INFO L82 PathProgramCache]: Analyzing trace with hash 288176866, now seen corresponding path program 1 times [2020-08-19 01:44:01,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:44:01,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073577481] [2020-08-19 01:44:01,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:44:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:01,736 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:44:01,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:44:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:01,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:44:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:01,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:44:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:01,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:44:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:01,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:44:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:01,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:44:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:01,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:44:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:44:01,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073577481] [2020-08-19 01:44:01,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:44:01,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:44:01,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286440907] [2020-08-19 01:44:01,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:44:01,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:44:01,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:44:01,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:44:01,820 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2020-08-19 01:44:02,256 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:44:03,031 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2020-08-19 01:44:03,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:44:03,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 01:44:03,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:44:03,036 INFO L225 Difference]: With dead ends: 230 [2020-08-19 01:44:03,036 INFO L226 Difference]: Without dead ends: 144 [2020-08-19 01:44:03,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:44:03,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-19 01:44:03,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-19 01:44:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 01:44:03,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-19 01:44:03,075 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2020-08-19 01:44:03,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:44:03,075 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-19 01:44:03,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:44:03,075 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-19 01:44:03,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 01:44:03,077 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:44:03,078 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] [2020-08-19 01:44:03,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:44:03,078 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:44:03,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:44:03,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2059632594, now seen corresponding path program 1 times [2020-08-19 01:44:03,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:44:03,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922058694] [2020-08-19 01:44:03,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:44:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:03,374 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:44:03,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:44:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:03,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:44:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:03,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:44:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:03,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:44:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:03,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:44:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:03,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:44:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:03,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:44:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:03,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:44:03,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922058694] [2020-08-19 01:44:03,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:44:03,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:44:03,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614074192] [2020-08-19 01:44:03,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:44:03,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:44:03,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:44:03,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:44:03,476 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 8 states. [2020-08-19 01:44:03,863 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:44:04,143 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:44:04,377 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:44:04,610 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:44:05,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:44:05,665 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2020-08-19 01:44:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:44:05,668 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 01:44:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:44:05,670 INFO L225 Difference]: With dead ends: 239 [2020-08-19 01:44:05,670 INFO L226 Difference]: Without dead ends: 144 [2020-08-19 01:44:05,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:44:05,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-19 01:44:05,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-19 01:44:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 01:44:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-19 01:44:05,705 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2020-08-19 01:44:05,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:44:05,705 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-19 01:44:05,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:44:05,706 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-19 01:44:05,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 01:44:05,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:44:05,708 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] [2020-08-19 01:44:05,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:44:05,709 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:44:05,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:44:05,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1182566725, now seen corresponding path program 1 times [2020-08-19 01:44:05,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:44:05,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700376373] [2020-08-19 01:44:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:44:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:05,996 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:44:05,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:44:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:44:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:06,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:44:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:06,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:44:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:06,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:44:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:06,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 01:44:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:06,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:44:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:06,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:44:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:44:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:06,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 01:44:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:44:06,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700376373] [2020-08-19 01:44:06,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:44:06,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:44:06,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104449831] [2020-08-19 01:44:06,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:44:06,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:44:06,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:44:06,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:44:06,107 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2020-08-19 01:44:06,452 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:44:07,589 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:44:08,243 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2020-08-19 01:44:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:44:08,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-19 01:44:08,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:44:08,248 INFO L225 Difference]: With dead ends: 331 [2020-08-19 01:44:08,249 INFO L226 Difference]: Without dead ends: 236 [2020-08-19 01:44:08,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:44:08,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-08-19 01:44:08,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-08-19 01:44:08,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-19 01:44:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2020-08-19 01:44:08,296 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2020-08-19 01:44:08,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:44:08,297 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2020-08-19 01:44:08,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:44:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2020-08-19 01:44:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 01:44:08,300 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:44:08,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:44:08,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:44:08,300 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:44:08,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:44:08,301 INFO L82 PathProgramCache]: Analyzing trace with hash 590157777, now seen corresponding path program 1 times [2020-08-19 01:44:08,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:44:08,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504909275] [2020-08-19 01:44:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:44:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:08,632 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:44:08,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:44:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:08,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:44:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:08,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:44:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:08,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:44:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:08,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:44:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:08,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 01:44:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:08,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:44:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:08,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:44:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:08,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:44:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:08,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:44:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:08,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 01:44:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:08,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 01:44:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:08,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:44:08,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504909275] [2020-08-19 01:44:08,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:44:08,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:44:08,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659115391] [2020-08-19 01:44:08,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:44:08,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:44:08,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:44:08,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:44:08,756 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 8 states. [2020-08-19 01:44:09,102 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:44:10,214 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:44:10,491 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:44:10,729 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:44:10,945 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:44:11,238 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:12,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:44:12,247 INFO L93 Difference]: Finished difference Result 580 states and 716 transitions. [2020-08-19 01:44:12,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:44:12,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-19 01:44:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:44:12,253 INFO L225 Difference]: With dead ends: 580 [2020-08-19 01:44:12,253 INFO L226 Difference]: Without dead ends: 409 [2020-08-19 01:44:12,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:44:12,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-08-19 01:44:12,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 345. [2020-08-19 01:44:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-19 01:44:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 394 transitions. [2020-08-19 01:44:12,330 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 394 transitions. Word has length 78 [2020-08-19 01:44:12,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:44:12,331 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 394 transitions. [2020-08-19 01:44:12,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:44:12,331 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 394 transitions. [2020-08-19 01:44:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-19 01:44:12,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:44:12,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:44:12,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:44:12,334 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:44:12,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:44:12,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1032148237, now seen corresponding path program 1 times [2020-08-19 01:44:12,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:44:12,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098891536] [2020-08-19 01:44:12,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:44:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:12,589 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:44:12,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:44:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:12,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:44:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:12,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:44:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:12,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:44:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:12,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:44:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:12,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:44:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:12,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:44:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:12,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:44:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:12,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:44:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:12,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:44:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:12,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:44:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:12,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 01:44:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:12,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 01:44:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:44:12,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098891536] [2020-08-19 01:44:12,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:44:12,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:44:12,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654022328] [2020-08-19 01:44:12,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:44:12,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:44:12,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:44:12,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:44:12,717 INFO L87 Difference]: Start difference. First operand 345 states and 394 transitions. Second operand 9 states. [2020-08-19 01:44:13,165 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:44:14,192 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:44:14,426 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:44:14,692 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:44:14,948 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:44:15,218 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:16,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:44:16,234 INFO L93 Difference]: Finished difference Result 448 states and 562 transitions. [2020-08-19 01:44:16,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:44:16,235 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-19 01:44:16,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:44:16,240 INFO L225 Difference]: With dead ends: 448 [2020-08-19 01:44:16,240 INFO L226 Difference]: Without dead ends: 445 [2020-08-19 01:44:16,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:44:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-08-19 01:44:16,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 345. [2020-08-19 01:44:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-19 01:44:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-08-19 01:44:16,314 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 82 [2020-08-19 01:44:16,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:44:16,315 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-08-19 01:44:16,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:44:16,315 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-08-19 01:44:16,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 01:44:16,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:44:16,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:44:16,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:44:16,317 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:44:16,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:44:16,318 INFO L82 PathProgramCache]: Analyzing trace with hash 2065507240, now seen corresponding path program 1 times [2020-08-19 01:44:16,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:44:16,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711714928] [2020-08-19 01:44:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:44:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:16,560 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:44:16,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:44:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:16,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:44:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:16,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:44:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:16,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:44:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:16,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:44:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:44:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:16,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:44:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:16,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:44:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:16,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:44:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:16,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:44:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:16,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:44:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:16,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 01:44:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:16,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 01:44:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:16,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:44:16,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711714928] [2020-08-19 01:44:16,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:44:16,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:44:16,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55857188] [2020-08-19 01:44:16,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:44:16,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:44:16,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:44:16,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:44:16,675 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 9 states. [2020-08-19 01:44:17,832 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:44:18,077 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:44:18,324 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:18,564 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:19,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:44:19,533 INFO L93 Difference]: Finished difference Result 770 states and 946 transitions. [2020-08-19 01:44:19,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:44:19,533 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 01:44:19,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:44:19,537 INFO L225 Difference]: With dead ends: 770 [2020-08-19 01:44:19,537 INFO L226 Difference]: Without dead ends: 449 [2020-08-19 01:44:19,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:44:19,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-08-19 01:44:19,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 355. [2020-08-19 01:44:19,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-08-19 01:44:19,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 403 transitions. [2020-08-19 01:44:19,606 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 403 transitions. Word has length 83 [2020-08-19 01:44:19,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:44:19,607 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 403 transitions. [2020-08-19 01:44:19,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:44:19,607 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 403 transitions. [2020-08-19 01:44:19,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 01:44:19,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:44:19,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:44:19,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:44:19,609 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:44:19,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:44:19,610 INFO L82 PathProgramCache]: Analyzing trace with hash 2088139494, now seen corresponding path program 1 times [2020-08-19 01:44:19,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:44:19,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474201189] [2020-08-19 01:44:19,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:44:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:19,878 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:44:19,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:44:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:19,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:44:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:19,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:44:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:19,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:44:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:19,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:44:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:19,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:44:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:19,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:44:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:19,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:44:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:19,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:44:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:19,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:44:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:19,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:44:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:19,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 01:44:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:19,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 01:44:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:44:20,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474201189] [2020-08-19 01:44:20,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:44:20,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:44:20,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087943407] [2020-08-19 01:44:20,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:44:20,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:44:20,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:44:20,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:44:20,012 INFO L87 Difference]: Start difference. First operand 355 states and 403 transitions. Second operand 11 states. [2020-08-19 01:44:20,551 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:20,779 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:20,997 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:21,585 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:21,821 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:22,050 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:44:23,115 INFO L93 Difference]: Finished difference Result 794 states and 986 transitions. [2020-08-19 01:44:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:44:23,116 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-19 01:44:23,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:44:23,120 INFO L225 Difference]: With dead ends: 794 [2020-08-19 01:44:23,121 INFO L226 Difference]: Without dead ends: 463 [2020-08-19 01:44:23,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:44:23,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-08-19 01:44:23,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 363. [2020-08-19 01:44:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-19 01:44:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 411 transitions. [2020-08-19 01:44:23,185 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 411 transitions. Word has length 83 [2020-08-19 01:44:23,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:44:23,186 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 411 transitions. [2020-08-19 01:44:23,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:44:23,186 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 411 transitions. [2020-08-19 01:44:23,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 01:44:23,187 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:44:23,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:44:23,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:44:23,188 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:44:23,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:44:23,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1181335803, now seen corresponding path program 1 times [2020-08-19 01:44:23,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:44:23,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130581167] [2020-08-19 01:44:23,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:44:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:23,491 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:44:23,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:44:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:23,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:44:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:23,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:44:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:23,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:44:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:23,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:44:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:23,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:44:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:23,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:44:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:23,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:44:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:23,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:44:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:23,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:44:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:23,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:44:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:23,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 01:44:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:23,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 01:44:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:44:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:44:23,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130581167] [2020-08-19 01:44:23,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:44:23,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:44:23,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367702129] [2020-08-19 01:44:23,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:44:23,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:44:23,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:44:23,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:44:23,597 INFO L87 Difference]: Start difference. First operand 363 states and 411 transitions. Second operand 7 states. [2020-08-19 01:44:23,941 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:44:24,414 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:44:26,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:44:26,326 INFO L93 Difference]: Finished difference Result 1097 states and 1408 transitions. [2020-08-19 01:44:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 01:44:26,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-19 01:44:26,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:44:26,332 INFO L225 Difference]: With dead ends: 1097 [2020-08-19 01:44:26,333 INFO L226 Difference]: Without dead ends: 758 [2020-08-19 01:44:26,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:44:26,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-08-19 01:44:26,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 659. [2020-08-19 01:44:26,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-08-19 01:44:26,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 781 transitions. [2020-08-19 01:44:26,440 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 781 transitions. Word has length 83 [2020-08-19 01:44:26,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:44:26,441 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 781 transitions. [2020-08-19 01:44:26,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:44:26,441 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 781 transitions. [2020-08-19 01:44:26,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-19 01:44:26,443 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:44:26,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:44:26,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:44:26,444 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:44:26,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:44:26,444 INFO L82 PathProgramCache]: Analyzing trace with hash -765720469, now seen corresponding path program 1 times [2020-08-19 01:44:26,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:44:26,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865522953] [2020-08-19 01:44:26,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:44:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:44:26,502 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:44:26,503 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:44:26,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:44:26,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:44:26 BoogieIcfgContainer [2020-08-19 01:44:26,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:44:26,534 INFO L168 Benchmark]: Toolchain (without parser) took 29343.96 ms. Allocated memory was 137.4 MB in the beginning and 650.1 MB in the end (delta: 512.8 MB). Free memory was 99.2 MB in the beginning and 402.5 MB in the end (delta: -303.3 MB). Peak memory consumption was 209.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:44:26,535 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 01:44:26,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.24 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 99.0 MB in the beginning and 166.2 MB in the end (delta: -67.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-19 01:44:26,537 INFO L168 Benchmark]: Boogie Preprocessor took 83.97 ms. Allocated memory is still 199.8 MB. Free memory was 166.2 MB in the beginning and 162.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-19 01:44:26,537 INFO L168 Benchmark]: RCFGBuilder took 1251.89 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 161.4 MB in the beginning and 189.7 MB in the end (delta: -28.3 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:44:26,538 INFO L168 Benchmark]: TraceAbstraction took 27320.00 ms. Allocated memory was 229.1 MB in the beginning and 650.1 MB in the end (delta: 421.0 MB). Free memory was 189.7 MB in the beginning and 402.5 MB in the end (delta: -212.8 MB). Peak memory consumption was 208.2 MB. Max. memory is 7.1 GB. [2020-08-19 01:44:26,542 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 682.24 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 99.0 MB in the beginning and 166.2 MB in the end (delta: -67.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.97 ms. Allocated memory is still 199.8 MB. Free memory was 166.2 MB in the beginning and 162.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1251.89 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 161.4 MB in the beginning and 189.7 MB in the end (delta: -28.3 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27320.00 ms. Allocated memory was 229.1 MB in the beginning and 650.1 MB in the end (delta: 421.0 MB). Free memory was 189.7 MB in the beginning and 402.5 MB in the end (delta: -212.8 MB). Peak memory consumption was 208.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 950]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int pumpRunning = 0; [L546] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L150] int retValue_acc ; [L151] int tmp ; [L155] FCALL select_helpers() [L156] FCALL select_features() [L157] CALL, EXPR valid_product() [L833] int retValue_acc ; [L836] retValue_acc = 1 [L837] return (retValue_acc); [L157] RET, EXPR valid_product() [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) [L161] FCALL setup() [L162] CALL runTest() [L141] CALL test() [L743] int splverifierCounter ; [L744] int tmp ; [L745] int tmp___0 ; [L746] int tmp___1 ; [L747] int tmp___2 ; [L750] splverifierCounter = 0 [L752] COND TRUE 1 [L754] COND TRUE splverifierCounter < 4 [L760] tmp = __VERIFIER_nondet_int() [L762] COND TRUE \read(tmp) [L764] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L764] RET waterRise() [L770] tmp___0 = __VERIFIER_nondet_int() [L772] COND TRUE \read(tmp___0) [L774] CALL changeMethaneLevel() [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 [L774] RET changeMethaneLevel() [L780] tmp___2 = __VERIFIER_nondet_int() [L782] COND TRUE \read(tmp___2) [L795] CALL timeShift() [L552] COND FALSE !(\read(pumpRunning)) [L559] COND TRUE \read(systemActive) [L561] CALL processEnvironment() [L607] int tmp ; [L610] COND FALSE !(\read(pumpRunning)) [L625] CALL processEnvironment__wrappee__highWaterSensor() [L581] int tmp ; [L584] COND TRUE ! pumpRunning [L586] CALL, EXPR isHighWaterLevel() [L704] int retValue_acc ; [L705] int tmp ; [L706] int tmp___0 ; [L710] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L710] RET, EXPR isHighWaterSensorDry() [L710] tmp = isHighWaterSensorDry() [L712] COND FALSE !(\read(tmp)) [L715] tmp___0 = 1 [L717] retValue_acc = tmp___0 [L718] return (retValue_acc); [L586] RET, EXPR isHighWaterLevel() [L586] tmp = isHighWaterLevel() [L588] COND TRUE \read(tmp) [L590] CALL activatePump() [L635] pumpRunning = 1 [L590] RET activatePump() [L625] RET processEnvironment__wrappee__highWaterSensor() [L561] RET processEnvironment() [L567] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L659] int retValue_acc ; [L662] retValue_acc = pumpRunning [L663] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L950] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1044 SDtfs, 1701 SDslu, 956 SDs, 0 SdLazy, 4841 SolverSat, 1009 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=659occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 580 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 186785 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...