/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:33:30,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:33:30,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:33:30,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:33:30,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:33:30,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:33:30,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:33:30,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:33:30,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:33:30,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:33:30,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:33:30,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:33:30,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:33:30,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:33:30,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:33:30,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:33:30,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:33:30,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:33:30,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:33:30,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:33:30,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:33:30,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:33:30,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:33:30,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:33:30,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:33:30,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:33:30,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:33:30,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:33:30,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:33:30,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:33:30,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:33:30,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:33:30,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:33:30,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:33:31,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:33:31,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:33:31,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:33:31,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:33:31,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:33:31,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:33:31,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:33:31,005 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 [2020-08-21 19:33:31,043 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:33:31,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:33:31,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:33:31,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:33:31,046 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:33:31,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:33:31,047 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:33:31,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:33:31,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:33:31,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:33:31,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:33:31,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:33:31,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:33:31,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:33:31,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:33:31,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:33:31,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:33:31,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:33:31,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:33:31,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:33:31,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:33:31,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:33:31,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:33:31,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:33:31,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:33:31,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:33:31,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:33:31,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:33:31,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:33:31,053 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=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:33:31,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:33:31,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:33:31,364 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:33:31,366 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:33:31,366 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:33:31,367 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-08-21 19:33:31,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fdfee08e/1fbc961b7d8644598d09f6e8cffbf433/FLAGa3e024eaf [2020-08-21 19:33:31,987 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:33:31,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-08-21 19:33:32,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fdfee08e/1fbc961b7d8644598d09f6e8cffbf433/FLAGa3e024eaf [2020-08-21 19:33:32,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fdfee08e/1fbc961b7d8644598d09f6e8cffbf433 [2020-08-21 19:33:32,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:33:32,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:33:32,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:33:32,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:33:32,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:33:32,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:33:32" (1/1) ... [2020-08-21 19:33:32,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e04f8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:33:32, skipping insertion in model container [2020-08-21 19:33:32,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:33:32" (1/1) ... [2020-08-21 19:33:32,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:33:32,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:33:32,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:33:32,853 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:33:33,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:33:33,068 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:33:33,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:33:33 WrapperNode [2020-08-21 19:33:33,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:33:33,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:33:33,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:33:33,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:33:33,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:33:33" (1/1) ... [2020-08-21 19:33:33,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:33:33" (1/1) ... [2020-08-21 19:33:33,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:33:33" (1/1) ... [2020-08-21 19:33:33,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:33:33" (1/1) ... [2020-08-21 19:33:33,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:33:33" (1/1) ... [2020-08-21 19:33:33,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:33:33" (1/1) ... [2020-08-21 19:33:33,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:33:33" (1/1) ... [2020-08-21 19:33:33,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:33:33,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:33:33,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:33:33,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:33:33,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:33:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:33:33,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:33:33,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:33:33,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 19:33:33,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 19:33:33,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 19:33:33,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 19:33:33,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 19:33:33,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 19:33:33,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 19:33:33,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 19:33:33,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 19:33:33,219 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 19:33:33,219 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 19:33:33,219 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 19:33:33,220 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 19:33:33,220 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 19:33:33,220 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 19:33:33,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 19:33:33,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 19:33:33,220 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 19:33:33,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 19:33:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 19:33:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 19:33:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 19:33:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 19:33:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 19:33:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 19:33:33,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 19:33:33,222 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 19:33:33,222 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 19:33:33,222 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 19:33:33,222 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 19:33:33,222 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 19:33:33,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 19:33:33,223 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 19:33:33,223 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 19:33:33,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 19:33:33,223 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 19:33:33,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:33:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:33:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:33:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 19:33:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 19:33:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 19:33:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 19:33:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 19:33:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 19:33:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 19:33:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:33:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 19:33:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 19:33:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:33:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 19:33:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:33:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 19:33:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 19:33:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:33:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 19:33:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 19:33:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:33:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 19:33:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 19:33:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:33:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 19:33:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 19:33:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 19:33:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 19:33:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 19:33:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 19:33:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 19:33:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 19:33:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 19:33:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 19:33:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 19:33:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 19:33:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 19:33:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 19:33:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 19:33:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 19:33:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 19:33:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 19:33:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 19:33:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 19:33:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 19:33:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 19:33:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 19:33:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 19:33:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 19:33:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:33:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:33:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 19:33:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:33:34,236 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:33:34,237 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 19:33:34,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:33:34 BoogieIcfgContainer [2020-08-21 19:33:34,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:33:34,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:33:34,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:33:34,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:33:34,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:33:32" (1/3) ... [2020-08-21 19:33:34,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7d5494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:33:34, skipping insertion in model container [2020-08-21 19:33:34,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:33:33" (2/3) ... [2020-08-21 19:33:34,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7d5494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:33:34, skipping insertion in model container [2020-08-21 19:33:34,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:33:34" (3/3) ... [2020-08-21 19:33:34,250 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product41.cil.c [2020-08-21 19:33:34,260 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:33:34,268 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:33:34,282 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:33:34,306 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:33:34,307 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:33:34,307 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:33:34,307 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:33:34,307 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:33:34,307 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:33:34,307 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:33:34,308 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:33:34,328 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-08-21 19:33:34,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 19:33:34,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:33:34,337 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] [2020-08-21 19:33:34,338 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:33:34,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:33:34,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1966863296, now seen corresponding path program 1 times [2020-08-21 19:33:34,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:33:34,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34214556] [2020-08-21 19:33:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:33:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:35,069 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:33:35,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:33:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:35,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:33:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:35,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:33:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:35,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:33:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:35,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:33:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:35,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:33:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:35,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 19:33:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:35,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 19:33:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:33:35,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34214556] [2020-08-21 19:33:35,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:33:35,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:33:35,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930697452] [2020-08-21 19:33:35,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:33:35,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:33:35,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:33:35,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:33:35,262 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2020-08-21 19:33:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:33:36,215 INFO L93 Difference]: Finished difference Result 274 states and 358 transitions. [2020-08-21 19:33:36,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 19:33:36,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 19:33:36,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:33:36,245 INFO L225 Difference]: With dead ends: 274 [2020-08-21 19:33:36,245 INFO L226 Difference]: Without dead ends: 153 [2020-08-21 19:33:36,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:33:36,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-21 19:33:36,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 122. [2020-08-21 19:33:36,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-21 19:33:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 143 transitions. [2020-08-21 19:33:36,430 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 143 transitions. Word has length 51 [2020-08-21 19:33:36,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:33:36,431 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 143 transitions. [2020-08-21 19:33:36,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:33:36,431 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 143 transitions. [2020-08-21 19:33:36,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 19:33:36,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:33:36,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:33:36,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:33:36,440 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:33:36,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:33:36,440 INFO L82 PathProgramCache]: Analyzing trace with hash 335710898, now seen corresponding path program 1 times [2020-08-21 19:33:36,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:33:36,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109700038] [2020-08-21 19:33:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:33:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:36,850 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:33:36,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:33:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:36,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:33:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:36,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:33:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:36,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:33:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:36,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:33:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:36,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:33:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:36,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:33:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:36,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 19:33:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:33:36,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109700038] [2020-08-21 19:33:36,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:33:36,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:33:36,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46520507] [2020-08-21 19:33:36,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:33:36,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:33:36,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:33:36,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:33:36,930 INFO L87 Difference]: Start difference. First operand 122 states and 143 transitions. Second operand 5 states. [2020-08-21 19:33:37,439 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:33:38,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:33:38,271 INFO L93 Difference]: Finished difference Result 219 states and 269 transitions. [2020-08-21 19:33:38,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:33:38,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 19:33:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:33:38,275 INFO L225 Difference]: With dead ends: 219 [2020-08-21 19:33:38,275 INFO L226 Difference]: Without dead ends: 143 [2020-08-21 19:33:38,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:33:38,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-21 19:33:38,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-08-21 19:33:38,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-21 19:33:38,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2020-08-21 19:33:38,315 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 52 [2020-08-21 19:33:38,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:33:38,315 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2020-08-21 19:33:38,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:33:38,316 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2020-08-21 19:33:38,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 19:33:38,318 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:33:38,318 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] [2020-08-21 19:33:38,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:33:38,319 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:33:38,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:33:38,319 INFO L82 PathProgramCache]: Analyzing trace with hash 727255979, now seen corresponding path program 1 times [2020-08-21 19:33:38,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:33:38,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586211688] [2020-08-21 19:33:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:33:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:38,647 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:33:38,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:33:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:38,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:33:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:38,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:33:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:38,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:33:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:38,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:33:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:38,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:33:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:38,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 19:33:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:38,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 19:33:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:38,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:33:38,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586211688] [2020-08-21 19:33:38,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:33:38,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:33:38,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704858113] [2020-08-21 19:33:38,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:33:38,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:33:38,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:33:38,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:33:38,754 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand 9 states. [2020-08-21 19:33:39,141 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:33:39,487 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:33:39,771 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:33:40,020 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:33:41,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:33:41,195 INFO L93 Difference]: Finished difference Result 228 states and 284 transitions. [2020-08-21 19:33:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:33:41,200 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-21 19:33:41,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:33:41,204 INFO L225 Difference]: With dead ends: 228 [2020-08-21 19:33:41,204 INFO L226 Difference]: Without dead ends: 143 [2020-08-21 19:33:41,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:33:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-21 19:33:41,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-08-21 19:33:41,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-21 19:33:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2020-08-21 19:33:41,241 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 56 [2020-08-21 19:33:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:33:41,242 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2020-08-21 19:33:41,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:33:41,242 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2020-08-21 19:33:41,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 19:33:41,244 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:33:41,244 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] [2020-08-21 19:33:41,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:33:41,244 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:33:41,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:33:41,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1730792410, now seen corresponding path program 1 times [2020-08-21 19:33:41,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:33:41,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076850358] [2020-08-21 19:33:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:33:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:41,547 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:33:41,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:33:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:41,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:33:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:41,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:33:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:41,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:33:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:41,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:33:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:41,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:33:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:41,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 19:33:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:41,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:33:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:41,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:33:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:41,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 19:33:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:33:41,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076850358] [2020-08-21 19:33:41,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:33:41,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 19:33:41,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489924371] [2020-08-21 19:33:41,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 19:33:41,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:33:41,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 19:33:41,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:33:41,680 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand 7 states. [2020-08-21 19:33:42,092 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:33:43,263 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:33:43,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:33:43,862 INFO L93 Difference]: Finished difference Result 313 states and 394 transitions. [2020-08-21 19:33:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 19:33:43,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-08-21 19:33:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:33:43,867 INFO L225 Difference]: With dead ends: 313 [2020-08-21 19:33:43,867 INFO L226 Difference]: Without dead ends: 228 [2020-08-21 19:33:43,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:33:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-08-21 19:33:43,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 182. [2020-08-21 19:33:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-21 19:33:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 211 transitions. [2020-08-21 19:33:43,923 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 211 transitions. Word has length 64 [2020-08-21 19:33:43,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:33:43,924 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 211 transitions. [2020-08-21 19:33:43,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 19:33:43,924 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 211 transitions. [2020-08-21 19:33:43,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 19:33:43,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:33:43,931 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] [2020-08-21 19:33:43,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:33:43,931 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:33:43,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:33:43,931 INFO L82 PathProgramCache]: Analyzing trace with hash 529777432, now seen corresponding path program 1 times [2020-08-21 19:33:43,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:33:43,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796242963] [2020-08-21 19:33:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:33:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:44,288 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:33:44,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:33:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:44,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:33:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:44,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:33:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:44,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:33:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:33:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:44,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:33:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:44,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 19:33:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:44,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:33:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:44,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:33:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:44,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:33:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:44,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 19:33:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:44,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 19:33:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:33:44,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796242963] [2020-08-21 19:33:44,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:33:44,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:33:44,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640724011] [2020-08-21 19:33:44,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:33:44,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:33:44,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:33:44,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:33:44,421 INFO L87 Difference]: Start difference. First operand 182 states and 211 transitions. Second operand 9 states. [2020-08-21 19:33:44,901 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:33:45,854 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:33:46,172 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:33:46,659 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:33:46,894 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:33:47,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:33:47,756 INFO L93 Difference]: Finished difference Result 537 states and 684 transitions. [2020-08-21 19:33:47,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 19:33:47,759 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-21 19:33:47,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:33:47,764 INFO L225 Difference]: With dead ends: 537 [2020-08-21 19:33:47,764 INFO L226 Difference]: Without dead ends: 383 [2020-08-21 19:33:47,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 19:33:47,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-21 19:33:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 312. [2020-08-21 19:33:47,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-21 19:33:47,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 362 transitions. [2020-08-21 19:33:47,834 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 362 transitions. Word has length 78 [2020-08-21 19:33:47,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:33:47,835 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 362 transitions. [2020-08-21 19:33:47,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:33:47,835 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 362 transitions. [2020-08-21 19:33:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 19:33:47,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:33:47,837 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] [2020-08-21 19:33:47,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:33:47,838 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:33:47,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:33:47,838 INFO L82 PathProgramCache]: Analyzing trace with hash 281843316, now seen corresponding path program 1 times [2020-08-21 19:33:47,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:33:47,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355117509] [2020-08-21 19:33:47,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:33:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:48,171 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:33:48,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:33:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:48,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:33:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:48,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:33:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:48,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:33:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:48,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:33:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:33:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:48,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 19:33:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:48,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 19:33:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:48,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:33:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:48,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:33:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:33:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:48,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-21 19:33:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:48,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 19:33:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:33:48,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355117509] [2020-08-21 19:33:48,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:33:48,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:33:48,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513796405] [2020-08-21 19:33:48,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:33:48,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:33:48,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:33:48,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:33:48,283 INFO L87 Difference]: Start difference. First operand 312 states and 362 transitions. Second operand 10 states. [2020-08-21 19:33:48,761 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:33:49,894 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:33:50,821 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:33:51,107 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:33:51,361 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:33:51,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:33:51,666 INFO L93 Difference]: Finished difference Result 702 states and 877 transitions. [2020-08-21 19:33:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 19:33:51,667 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-08-21 19:33:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:33:51,671 INFO L225 Difference]: With dead ends: 702 [2020-08-21 19:33:51,672 INFO L226 Difference]: Without dead ends: 418 [2020-08-21 19:33:51,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-21 19:33:51,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-08-21 19:33:51,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 311. [2020-08-21 19:33:51,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-21 19:33:51,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 359 transitions. [2020-08-21 19:33:51,744 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 359 transitions. Word has length 82 [2020-08-21 19:33:51,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:33:51,745 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 359 transitions. [2020-08-21 19:33:51,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:33:51,745 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 359 transitions. [2020-08-21 19:33:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 19:33:51,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:33:51,747 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:33:51,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:33:51,748 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:33:51,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:33:51,748 INFO L82 PathProgramCache]: Analyzing trace with hash 131138833, now seen corresponding path program 1 times [2020-08-21 19:33:51,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:33:51,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25493148] [2020-08-21 19:33:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:33:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:51,976 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:33:51,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:33:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:51,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:33:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:51,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:33:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:51,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:33:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:51,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:33:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:52,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:33:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:52,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 19:33:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:52,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 19:33:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:52,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:33:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:52,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:33:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:52,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:33:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:52,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:33:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:52,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:33:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:52,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:33:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:52,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 19:33:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:52,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 19:33:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:33:52,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25493148] [2020-08-21 19:33:52,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:33:52,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:33:52,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385719224] [2020-08-21 19:33:52,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:33:52,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:33:52,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:33:52,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:33:52,133 INFO L87 Difference]: Start difference. First operand 311 states and 359 transitions. Second operand 10 states. [2020-08-21 19:33:53,103 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:33:53,354 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 19:33:53,607 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:33:53,843 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:33:54,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:33:54,820 INFO L93 Difference]: Finished difference Result 709 states and 905 transitions. [2020-08-21 19:33:54,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 19:33:54,825 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-08-21 19:33:54,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:33:54,828 INFO L225 Difference]: With dead ends: 709 [2020-08-21 19:33:54,829 INFO L226 Difference]: Without dead ends: 426 [2020-08-21 19:33:54,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:33:54,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-21 19:33:54,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 321. [2020-08-21 19:33:54,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-08-21 19:33:54,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 369 transitions. [2020-08-21 19:33:54,894 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 369 transitions. Word has length 98 [2020-08-21 19:33:54,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:33:54,895 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 369 transitions. [2020-08-21 19:33:54,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:33:54,895 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 369 transitions. [2020-08-21 19:33:54,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 19:33:54,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:33:54,897 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:33:54,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:33:54,897 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:33:54,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:33:54,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1918249009, now seen corresponding path program 1 times [2020-08-21 19:33:54,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:33:54,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620222703] [2020-08-21 19:33:54,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:33:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,161 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:33:55,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:33:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:33:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:33:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:33:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:33:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:33:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 19:33:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 19:33:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:33:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:33:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:33:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:33:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:33:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:33:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 19:33:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 19:33:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:33:55,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620222703] [2020-08-21 19:33:55,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:33:55,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 19:33:55,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100685140] [2020-08-21 19:33:55,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:33:55,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:33:55,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:33:55,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:33:55,314 INFO L87 Difference]: Start difference. First operand 321 states and 369 transitions. Second operand 12 states. [2020-08-21 19:33:56,693 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:33:56,936 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:33:57,168 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:33:57,760 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:33:58,012 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:33:58,268 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:33:59,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:33:59,364 INFO L93 Difference]: Finished difference Result 729 states and 927 transitions. [2020-08-21 19:33:59,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 19:33:59,364 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2020-08-21 19:33:59,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:33:59,370 INFO L225 Difference]: With dead ends: 729 [2020-08-21 19:33:59,371 INFO L226 Difference]: Without dead ends: 436 [2020-08-21 19:33:59,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 19:33:59,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-08-21 19:33:59,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 329. [2020-08-21 19:33:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-08-21 19:33:59,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 377 transitions. [2020-08-21 19:33:59,471 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 377 transitions. Word has length 98 [2020-08-21 19:33:59,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:33:59,472 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 377 transitions. [2020-08-21 19:33:59,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:33:59,472 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 377 transitions. [2020-08-21 19:33:59,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 19:33:59,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:33:59,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:33:59,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:33:59,478 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:33:59,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:33:59,478 INFO L82 PathProgramCache]: Analyzing trace with hash -948667986, now seen corresponding path program 1 times [2020-08-21 19:33:59,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:33:59,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120686472] [2020-08-21 19:33:59,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:33:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,726 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:33:59,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:33:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:33:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:33:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:33:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:33:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:33:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 19:33:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 19:33:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:33:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:33:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:33:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:33:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:33:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:33:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 19:33:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 19:33:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:33:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:33:59,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120686472] [2020-08-21 19:33:59,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:33:59,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:33:59,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226717504] [2020-08-21 19:33:59,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:33:59,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:33:59,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:33:59,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:33:59,858 INFO L87 Difference]: Start difference. First operand 329 states and 377 transitions. Second operand 8 states. [2020-08-21 19:34:00,294 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:34:00,788 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:34:02,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:34:02,759 INFO L93 Difference]: Finished difference Result 1028 states and 1346 transitions. [2020-08-21 19:34:02,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 19:34:02,760 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-21 19:34:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:34:02,765 INFO L225 Difference]: With dead ends: 1028 [2020-08-21 19:34:02,765 INFO L226 Difference]: Without dead ends: 727 [2020-08-21 19:34:02,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-08-21 19:34:02,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-08-21 19:34:02,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 595. [2020-08-21 19:34:02,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-08-21 19:34:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 705 transitions. [2020-08-21 19:34:02,899 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 705 transitions. Word has length 98 [2020-08-21 19:34:02,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:34:02,902 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 705 transitions. [2020-08-21 19:34:02,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:34:02,902 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 705 transitions. [2020-08-21 19:34:02,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 19:34:02,904 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:34:02,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:34:02,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:34:02,905 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:34:02,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:34:02,906 INFO L82 PathProgramCache]: Analyzing trace with hash -944641720, now seen corresponding path program 1 times [2020-08-21 19:34:02,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:34:02,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306059757] [2020-08-21 19:34:02,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:34:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,337 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:34:03,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:34:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:34:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:34:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:34:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:34:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:34:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:34:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:34:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 19:34:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:34:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:34:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:34:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:34:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:34:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:34:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 19:34:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 19:34:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 19:34:03,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306059757] [2020-08-21 19:34:03,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:34:03,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 19:34:03,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321801478] [2020-08-21 19:34:03,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 19:34:03,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:34:03,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 19:34:03,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:34:03,667 INFO L87 Difference]: Start difference. First operand 595 states and 705 transitions. Second operand 18 states. [2020-08-21 19:34:04,494 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:34:04,793 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:34:05,043 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:34:05,293 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:34:05,948 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:34:06,797 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:34:07,129 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:34:07,404 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:34:07,651 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:34:07,993 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:34:08,273 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:34:08,869 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-21 19:34:09,425 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-21 19:34:11,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:34:11,071 INFO L93 Difference]: Finished difference Result 1262 states and 1575 transitions. [2020-08-21 19:34:11,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-21 19:34:11,072 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2020-08-21 19:34:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:34:11,077 INFO L225 Difference]: With dead ends: 1262 [2020-08-21 19:34:11,078 INFO L226 Difference]: Without dead ends: 695 [2020-08-21 19:34:11,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=428, Invalid=1734, Unknown=0, NotChecked=0, Total=2162 [2020-08-21 19:34:11,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-08-21 19:34:11,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 572. [2020-08-21 19:34:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-08-21 19:34:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 666 transitions. [2020-08-21 19:34:11,181 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 666 transitions. Word has length 102 [2020-08-21 19:34:11,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:34:11,181 INFO L479 AbstractCegarLoop]: Abstraction has 572 states and 666 transitions. [2020-08-21 19:34:11,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 19:34:11,181 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 666 transitions. [2020-08-21 19:34:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-21 19:34:11,183 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:34:11,183 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:34:11,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 19:34:11,184 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:34:11,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:34:11,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1654540536, now seen corresponding path program 1 times [2020-08-21 19:34:11,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:34:11,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313256476] [2020-08-21 19:34:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:34:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,448 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:34:11,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:34:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:34:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:34:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:34:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:34:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:34:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:34:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:34:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:34:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:34:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:34:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:34:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:34:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:34:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:34:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:34:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:34:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 19:34:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 19:34:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 19:34:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:34:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 19:34:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-21 19:34:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:34:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 19:34:11,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313256476] [2020-08-21 19:34:11,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:34:11,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 19:34:11,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001407681] [2020-08-21 19:34:11,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:34:11,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:34:11,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:34:11,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:34:11,611 INFO L87 Difference]: Start difference. First operand 572 states and 666 transitions. Second operand 9 states. [2020-08-21 19:34:11,955 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:34:13,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:34:13,700 INFO L93 Difference]: Finished difference Result 1091 states and 1387 transitions. [2020-08-21 19:34:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 19:34:13,701 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-08-21 19:34:13,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:34:13,706 INFO L225 Difference]: With dead ends: 1091 [2020-08-21 19:34:13,707 INFO L226 Difference]: Without dead ends: 1088 [2020-08-21 19:34:13,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-08-21 19:34:13,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2020-08-21 19:34:13,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 901. [2020-08-21 19:34:13,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-08-21 19:34:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1053 transitions. [2020-08-21 19:34:13,926 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1053 transitions. Word has length 137 [2020-08-21 19:34:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:34:13,927 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1053 transitions. [2020-08-21 19:34:13,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:34:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1053 transitions. [2020-08-21 19:34:13,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-08-21 19:34:13,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:34:13,931 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:34:13,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 19:34:13,932 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:34:13,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:34:13,932 INFO L82 PathProgramCache]: Analyzing trace with hash -402984640, now seen corresponding path program 1 times [2020-08-21 19:34:13,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:34:13,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818469332] [2020-08-21 19:34:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:34:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 19:34:14,050 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 19:34:14,051 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 19:34:14,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 19:34:14,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:34:14 BoogieIcfgContainer [2020-08-21 19:34:14,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:34:14,120 INFO L168 Benchmark]: Toolchain (without parser) took 41757.76 ms. Allocated memory was 140.5 MB in the beginning and 673.7 MB in the end (delta: 533.2 MB). Free memory was 102.0 MB in the beginning and 231.8 MB in the end (delta: -129.8 MB). Peak memory consumption was 403.4 MB. Max. memory is 7.1 GB. [2020-08-21 19:34:14,122 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 19:34:14,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.58 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 168.2 MB in the end (delta: -66.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-21 19:34:14,126 INFO L168 Benchmark]: Boogie Preprocessor took 84.92 ms. Allocated memory is still 203.4 MB. Free memory was 168.2 MB in the beginning and 163.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-21 19:34:14,127 INFO L168 Benchmark]: RCFGBuilder took 1086.75 ms. Allocated memory was 203.4 MB in the beginning and 237.5 MB in the end (delta: 34.1 MB). Free memory was 163.7 MB in the beginning and 192.8 MB in the end (delta: -29.1 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. [2020-08-21 19:34:14,128 INFO L168 Benchmark]: TraceAbstraction took 39866.81 ms. Allocated memory was 237.5 MB in the beginning and 673.7 MB in the end (delta: 436.2 MB). Free memory was 192.8 MB in the beginning and 231.8 MB in the end (delta: -39.0 MB). Peak memory consumption was 397.2 MB. Max. memory is 7.1 GB. [2020-08-21 19:34:14,139 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 714.58 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 168.2 MB in the end (delta: -66.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.92 ms. Allocated memory is still 203.4 MB. Free memory was 168.2 MB in the beginning and 163.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1086.75 ms. Allocated memory was 203.4 MB in the beginning and 237.5 MB in the end (delta: 34.1 MB). Free memory was 163.7 MB in the beginning and 192.8 MB in the end (delta: -29.1 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39866.81 ms. Allocated memory was 237.5 MB in the beginning and 673.7 MB in the end (delta: 436.2 MB). Free memory was 192.8 MB in the beginning and 231.8 MB in the end (delta: -39.0 MB). Peak memory consumption was 397.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 830]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L43] int methAndRunningLastTime ; [L251] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L455] int pumpRunning = 0; [L456] int systemActive = 1; [L628] int waterLevel = 1; [L629] int methaneLevelCritical = 0; [L835] int cleanupTimeShifts = 4; [L909] int retValue_acc ; [L910] int tmp ; [L914] FCALL select_helpers() [L915] FCALL select_features() [L916] CALL, EXPR valid_product() [L817] int retValue_acc ; [L820] retValue_acc = 1 [L821] return (retValue_acc); [L916] RET, EXPR valid_product() [L916] tmp = valid_product() [L918] COND TRUE \read(tmp) [L920] FCALL setup() [L921] CALL runTest() [L902] CALL __utac_acc__Specification2_spec__1() [L48] methAndRunningLastTime = 0 [L902] RET __utac_acc__Specification2_spec__1() [L903] CALL test() [L724] int splverifierCounter ; [L725] int tmp ; [L726] int tmp___0 ; [L727] int tmp___1 ; [L728] int tmp___2 ; [L731] splverifierCounter = 0 [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND TRUE \read(tmp) [L745] CALL waterRise() [L646] COND TRUE waterLevel < 2 [L647] waterLevel = waterLevel + 1 [L745] RET waterRise() [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp___0)) [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND FALSE !(\read(pumpRunning)) [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND TRUE ! pumpRunning [L496] CALL, EXPR isHighWaterLevel() [L606] int retValue_acc ; [L607] int tmp ; [L608] int tmp___0 ; [L612] CALL, EXPR isHighWaterSensorDry() [L708] int retValue_acc ; [L711] COND FALSE !(waterLevel < 2) [L715] retValue_acc = 0 [L716] return (retValue_acc); [L612] RET, EXPR isHighWaterSensorDry() [L612] tmp = isHighWaterSensorDry() [L614] COND FALSE !(\read(tmp)) [L617] tmp___0 = 1 [L619] retValue_acc = tmp___0 [L620] return (retValue_acc); [L496] RET, EXPR isHighWaterLevel() [L496] tmp = isHighWaterLevel() [L498] COND TRUE \read(tmp) [L500] CALL activatePump() [L525] int tmp ; [L529] CALL, EXPR isMethaneAlarm() [L550] int retValue_acc ; [L554] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L554] RET, EXPR isMethaneLevelCritical() [L554] retValue_acc = isMethaneLevelCritical() [L556] return (retValue_acc); [L529] RET, EXPR isMethaneAlarm() [L529] tmp = isMethaneAlarm() [L531] COND FALSE !(\read(tmp)) [L535] CALL activatePump__wrappee__highWaterSensor() [L519] pumpRunning = 1 [L535] RET activatePump__wrappee__highWaterSensor() [L500] RET activatePump() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND FALSE !(\read(tmp)) [L76] methAndRunningLastTime = 0 [L477] RET __utac_acc__Specification2_spec__2() [L776] RET timeShift() [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND FALSE !(\read(tmp)) [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND TRUE \read(tmp___0) [L755] CALL changeMethaneLevel() [L658] COND FALSE !(\read(methaneLevelCritical)) [L661] methaneLevelCritical = 1 [L755] RET changeMethaneLevel() [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND TRUE \read(pumpRunning) [L464] CALL lowerWaterLevel() [L634] COND TRUE waterLevel > 0 [L635] waterLevel = waterLevel - 1 [L464] RET lowerWaterLevel() [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND FALSE !(! pumpRunning) [L509] FCALL processEnvironment__wrappee__base() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND TRUE \read(tmp) [L62] CALL, EXPR isPumpRunning() [L561] int retValue_acc ; [L564] retValue_acc = pumpRunning [L565] return (retValue_acc); [L62] RET, EXPR isPumpRunning() [L62] tmp___0 = isPumpRunning() [L64] COND TRUE \read(tmp___0) [L65] COND FALSE !(\read(methAndRunningLastTime)) [L70] methAndRunningLastTime = 1 [L477] RET __utac_acc__Specification2_spec__2() [L776] RET timeShift() [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND FALSE !(\read(tmp)) [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp___0)) [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND TRUE \read(pumpRunning) [L464] CALL lowerWaterLevel() [L634] COND TRUE waterLevel > 0 [L635] waterLevel = waterLevel - 1 [L464] RET lowerWaterLevel() [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND FALSE !(! pumpRunning) [L509] FCALL processEnvironment__wrappee__base() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND TRUE \read(tmp) [L62] CALL, EXPR isPumpRunning() [L561] int retValue_acc ; [L564] retValue_acc = pumpRunning [L565] return (retValue_acc); [L62] RET, EXPR isPumpRunning() [L62] tmp___0 = isPumpRunning() [L64] COND TRUE \read(tmp___0) [L65] COND TRUE \read(methAndRunningLastTime) [L67] CALL __automaton_fail() [L830] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 39.7s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 32.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1270 SDtfs, 3482 SDslu, 1745 SDs, 0 SdLazy, 7442 SolverSat, 2228 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 537 GetRequests, 339 SyntacticMatches, 3 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 969 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1095 NumberOfCodeBlocks, 1095 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 905 ConstructedInterpolants, 0 QuantifiedInterpolants, 303920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 38/42 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...