/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -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 0.1.25-5644d1e-m [2020-08-18 18:29:44,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:29:44,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:29:44,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:29:44,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:29:44,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:29:44,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:29:44,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:29:44,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:29:44,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:29:44,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:29:44,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:29:44,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:29:44,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:29:44,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:29:44,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:29:44,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:29:44,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:29:44,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:29:44,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:29:44,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:29:44,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:29:44,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:29:44,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:29:44,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:29:44,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:29:44,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:29:44,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:29:44,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:29:44,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:29:44,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:29:44,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:29:44,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:29:44,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:29:44,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:29:44,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:29:44,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:29:44,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:29:44,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:29:44,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:29:44,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:29:44,114 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 [2020-08-18 18:29:44,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:29:44,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:29:44,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:29:44,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:29:44,161 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:29:44,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:29:44,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:29:44,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:29:44,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:29:44,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:29:44,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:29:44,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:29:44,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:29:44,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:29:44,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:29:44,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:29:44,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:29:44,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:29:44,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:29:44,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:29:44,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:29:44,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:29:44,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:29:44,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:29:44,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:29:44,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:29:44,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:29:44,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:29:44,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:29:44,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:29:44,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:29:44,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:29:44,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:29:44,460 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:29:44,461 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:29:44,461 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-08-18 18:29:44,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dc872ae6/a52e41f45a404f93810c1d100ee43797/FLAGcbe5a01c3 [2020-08-18 18:29:45,013 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:29:45,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-08-18 18:29:45,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dc872ae6/a52e41f45a404f93810c1d100ee43797/FLAGcbe5a01c3 [2020-08-18 18:29:45,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dc872ae6/a52e41f45a404f93810c1d100ee43797 [2020-08-18 18:29:45,371 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:29:45,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:29:45,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:29:45,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:29:45,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:29:45,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:29:45" (1/1) ... [2020-08-18 18:29:45,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a00533e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:45, skipping insertion in model container [2020-08-18 18:29:45,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:29:45" (1/1) ... [2020-08-18 18:29:45,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:29:45,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:29:45,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:29:45,835 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:29:45,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:29:46,017 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:29:46,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:46 WrapperNode [2020-08-18 18:29:46,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:29:46,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:29:46,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:29:46,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:29:46,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:46" (1/1) ... [2020-08-18 18:29:46,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:46" (1/1) ... [2020-08-18 18:29:46,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:46" (1/1) ... [2020-08-18 18:29:46,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:46" (1/1) ... [2020-08-18 18:29:46,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:46" (1/1) ... [2020-08-18 18:29:46,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:46" (1/1) ... [2020-08-18 18:29:46,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:46" (1/1) ... [2020-08-18 18:29:46,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:29:46,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:29:46,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:29:46,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:29:46,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:46" (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 [2020-08-18 18:29:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:29:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:29:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:29:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 18:29:46,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 18:29:46,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:29:46,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:29:46,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:29:46,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:29:46,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:29:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:29:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:29:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:29:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:29:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 18:29:46,195 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:29:46,195 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:29:46,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:29:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:29:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:29:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:29:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:29:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:29:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:29:46,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:29:46,197 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:29:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:29:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:29:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:29:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:29:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:29:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:29:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:29:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:29:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:29:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:29:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:29:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:29:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:29:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:29:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:29:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:29:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:29:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:29:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:29:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 18:29:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 18:29:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:29:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:29:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:29:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:29:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:29:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:29:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:29:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:29:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:29:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:29:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:29:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:29:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:29:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:29:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:29:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:29:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:29:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:29:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:29:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:29:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:29:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:29:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:29:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:29:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:29:46,207 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:29:46,207 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:29:46,208 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 18:29:46,208 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:29:46,209 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:29:46,209 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:29:46,209 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:29:46,209 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:29:46,209 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:29:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:29:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:29:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:29:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:29:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:29:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:29:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:29:46,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:29:46,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:29:46,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:29:46,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:29:47,278 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:29:47,279 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:29:47,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:29:47 BoogieIcfgContainer [2020-08-18 18:29:47,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:29:47,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:29:47,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:29:47,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:29:47,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:29:45" (1/3) ... [2020-08-18 18:29:47,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b1ae2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:29:47, skipping insertion in model container [2020-08-18 18:29:47,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:46" (2/3) ... [2020-08-18 18:29:47,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b1ae2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:29:47, skipping insertion in model container [2020-08-18 18:29:47,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:29:47" (3/3) ... [2020-08-18 18:29:47,292 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product41.cil.c [2020-08-18 18:29:47,302 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:29:47,310 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:29:47,324 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:29:47,347 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:29:47,347 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:29:47,348 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:29:47,348 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:29:47,348 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:29:47,349 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:29:47,349 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:29:47,349 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:29:47,372 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-08-18 18:29:47,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 18:29:47,382 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:29:47,383 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] [2020-08-18 18:29:47,384 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:29:47,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:29:47,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1966863296, now seen corresponding path program 1 times [2020-08-18 18:29:47,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:29:47,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997524789] [2020-08-18 18:29:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:29:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:48,130 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:29:48,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:29:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:29:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:48,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:29:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:48,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:29:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:48,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:29:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:48,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:29:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:48,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:29:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:48,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 18:29:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:29:48,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997524789] [2020-08-18 18:29:48,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:29:48,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:29:48,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898391167] [2020-08-18 18:29:48,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:29:48,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:29:48,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:29:48,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:29:48,307 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2020-08-18 18:29:49,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:29:49,198 INFO L93 Difference]: Finished difference Result 274 states and 358 transitions. [2020-08-18 18:29:49,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:29:49,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 18:29:49,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:29:49,216 INFO L225 Difference]: With dead ends: 274 [2020-08-18 18:29:49,216 INFO L226 Difference]: Without dead ends: 153 [2020-08-18 18:29:49,221 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 [2020-08-18 18:29:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-18 18:29:49,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 122. [2020-08-18 18:29:49,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-18 18:29:49,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 143 transitions. [2020-08-18 18:29:49,310 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 143 transitions. Word has length 51 [2020-08-18 18:29:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:29:49,310 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 143 transitions. [2020-08-18 18:29:49,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:29:49,310 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 143 transitions. [2020-08-18 18:29:49,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 18:29:49,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:29:49,314 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] [2020-08-18 18:29:49,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:29:49,315 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:29:49,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:29:49,315 INFO L82 PathProgramCache]: Analyzing trace with hash 335710898, now seen corresponding path program 1 times [2020-08-18 18:29:49,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:29:49,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956079072] [2020-08-18 18:29:49,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:29:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:49,633 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:29:49,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:29:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:29:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:49,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:29:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:49,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:29:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:49,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:29:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:49,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:29:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:49,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:29:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:49,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:29:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:49,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:29:49,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956079072] [2020-08-18 18:29:49,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:29:49,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:29:49,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980051492] [2020-08-18 18:29:49,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:29:49,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:29:49,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:29:49,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:29:49,735 INFO L87 Difference]: Start difference. First operand 122 states and 143 transitions. Second operand 5 states. [2020-08-18 18:29:50,201 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:29:50,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:29:50,997 INFO L93 Difference]: Finished difference Result 219 states and 269 transitions. [2020-08-18 18:29:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:29:50,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 18:29:50,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:29:51,003 INFO L225 Difference]: With dead ends: 219 [2020-08-18 18:29:51,003 INFO L226 Difference]: Without dead ends: 143 [2020-08-18 18:29:51,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:29:51,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-18 18:29:51,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-08-18 18:29:51,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-18 18:29:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2020-08-18 18:29:51,054 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 52 [2020-08-18 18:29:51,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:29:51,054 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2020-08-18 18:29:51,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:29:51,054 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2020-08-18 18:29:51,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 18:29:51,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:29:51,066 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] [2020-08-18 18:29:51,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:29:51,067 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:29:51,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:29:51,067 INFO L82 PathProgramCache]: Analyzing trace with hash 727255979, now seen corresponding path program 1 times [2020-08-18 18:29:51,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:29:51,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233196487] [2020-08-18 18:29:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:29:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:51,440 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:29:51,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:29:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:51,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:29:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:51,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:29:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:51,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:29:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:51,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:29:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:51,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:29:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:51,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 18:29:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:51,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:29:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:29:51,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233196487] [2020-08-18 18:29:51,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:29:51,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:29:51,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193940523] [2020-08-18 18:29:51,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:29:51,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:29:51,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:29:51,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:29:51,595 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand 9 states. [2020-08-18 18:29:51,989 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:29:52,319 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:29:52,610 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:29:52,848 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:29:54,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:29:54,001 INFO L93 Difference]: Finished difference Result 228 states and 284 transitions. [2020-08-18 18:29:54,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:29:54,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 18:29:54,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:29:54,008 INFO L225 Difference]: With dead ends: 228 [2020-08-18 18:29:54,008 INFO L226 Difference]: Without dead ends: 143 [2020-08-18 18:29:54,009 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 [2020-08-18 18:29:54,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-18 18:29:54,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-08-18 18:29:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-18 18:29:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2020-08-18 18:29:54,045 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 56 [2020-08-18 18:29:54,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:29:54,045 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2020-08-18 18:29:54,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:29:54,046 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2020-08-18 18:29:54,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 18:29:54,047 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:29:54,047 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] [2020-08-18 18:29:54,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:29:54,047 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:29:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:29:54,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1730792410, now seen corresponding path program 1 times [2020-08-18 18:29:54,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:29:54,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78995939] [2020-08-18 18:29:54,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:29:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:54,342 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:29:54,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:29:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:54,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:29:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:54,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:29:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:54,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:29:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:54,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:29:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:54,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:29:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:54,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:29:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:54,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:29:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 18:29:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:54,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 18:29:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:29:54,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78995939] [2020-08-18 18:29:54,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:29:54,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:29:54,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158250793] [2020-08-18 18:29:54,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:29:54,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:29:54,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:29:54,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:29:54,491 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand 7 states. [2020-08-18 18:29:54,859 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:29:56,036 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:29:56,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:29:56,641 INFO L93 Difference]: Finished difference Result 313 states and 394 transitions. [2020-08-18 18:29:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 18:29:56,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-08-18 18:29:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:29:56,645 INFO L225 Difference]: With dead ends: 313 [2020-08-18 18:29:56,645 INFO L226 Difference]: Without dead ends: 228 [2020-08-18 18:29:56,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:29:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-08-18 18:29:56,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 182. [2020-08-18 18:29:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-18 18:29:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 211 transitions. [2020-08-18 18:29:56,697 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 211 transitions. Word has length 64 [2020-08-18 18:29:56,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:29:56,698 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 211 transitions. [2020-08-18 18:29:56,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:29:56,698 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 211 transitions. [2020-08-18 18:29:56,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 18:29:56,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:29:56,700 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] [2020-08-18 18:29:56,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:29:56,700 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:29:56,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:29:56,701 INFO L82 PathProgramCache]: Analyzing trace with hash 529777432, now seen corresponding path program 1 times [2020-08-18 18:29:56,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:29:56,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393984821] [2020-08-18 18:29:56,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:29:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:57,058 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:29:57,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:29:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:57,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:29:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:57,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:29:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:57,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:29:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:57,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:29:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:57,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:29:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:57,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:29:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:57,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:29:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:57,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:29:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:57,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:29:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:57,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 18:29:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:57,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 18:29:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:29:57,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393984821] [2020-08-18 18:29:57,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:29:57,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:29:57,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119230664] [2020-08-18 18:29:57,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:29:57,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:29:57,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:29:57,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:29:57,170 INFO L87 Difference]: Start difference. First operand 182 states and 211 transitions. Second operand 9 states. [2020-08-18 18:29:57,710 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:29:58,715 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:29:59,026 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:29:59,538 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:29:59,782 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:00,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:00,617 INFO L93 Difference]: Finished difference Result 537 states and 684 transitions. [2020-08-18 18:30:00,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 18:30:00,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 18:30:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:00,624 INFO L225 Difference]: With dead ends: 537 [2020-08-18 18:30:00,624 INFO L226 Difference]: Without dead ends: 383 [2020-08-18 18:30:00,626 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 [2020-08-18 18:30:00,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-18 18:30:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 312. [2020-08-18 18:30:00,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-18 18:30:00,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 362 transitions. [2020-08-18 18:30:00,705 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 362 transitions. Word has length 78 [2020-08-18 18:30:00,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:00,706 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 362 transitions. [2020-08-18 18:30:00,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:30:00,706 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 362 transitions. [2020-08-18 18:30:00,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 18:30:00,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:00,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:30:00,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:30:00,708 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:00,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:00,709 INFO L82 PathProgramCache]: Analyzing trace with hash 281843316, now seen corresponding path program 1 times [2020-08-18 18:30:00,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:00,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967690418] [2020-08-18 18:30:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:00,967 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:00,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:30:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 18:30:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 18:30:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:01,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967690418] [2020-08-18 18:30:01,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:01,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 18:30:01,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319732994] [2020-08-18 18:30:01,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:30:01,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:01,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:30:01,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:30:01,085 INFO L87 Difference]: Start difference. First operand 312 states and 362 transitions. Second operand 10 states. [2020-08-18 18:30:01,524 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:02,754 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:03,762 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:04,004 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:04,262 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:04,635 INFO L93 Difference]: Finished difference Result 702 states and 877 transitions. [2020-08-18 18:30:04,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 18:30:04,635 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-08-18 18:30:04,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:04,640 INFO L225 Difference]: With dead ends: 702 [2020-08-18 18:30:04,640 INFO L226 Difference]: Without dead ends: 418 [2020-08-18 18:30:04,642 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 [2020-08-18 18:30:04,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-08-18 18:30:04,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 311. [2020-08-18 18:30:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-18 18:30:04,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 359 transitions. [2020-08-18 18:30:04,716 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 359 transitions. Word has length 82 [2020-08-18 18:30:04,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:04,716 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 359 transitions. [2020-08-18 18:30:04,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:30:04,717 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 359 transitions. [2020-08-18 18:30:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 18:30:04,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:04,719 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] [2020-08-18 18:30:04,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:30:04,719 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:04,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:04,720 INFO L82 PathProgramCache]: Analyzing trace with hash 131138833, now seen corresponding path program 1 times [2020-08-18 18:30:04,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:04,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374047327] [2020-08-18 18:30:04,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,015 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:05,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:30:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 18:30:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 18:30:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:30:05,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374047327] [2020-08-18 18:30:05,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:05,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 18:30:05,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990435099] [2020-08-18 18:30:05,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:30:05,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:05,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:30:05,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:30:05,188 INFO L87 Difference]: Start difference. First operand 311 states and 359 transitions. Second operand 10 states. [2020-08-18 18:30:06,210 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:06,457 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:30:06,718 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:06,964 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:07,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:07,994 INFO L93 Difference]: Finished difference Result 709 states and 905 transitions. [2020-08-18 18:30:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 18:30:07,995 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-08-18 18:30:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:07,998 INFO L225 Difference]: With dead ends: 709 [2020-08-18 18:30:07,998 INFO L226 Difference]: Without dead ends: 426 [2020-08-18 18:30:08,000 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 [2020-08-18 18:30:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-18 18:30:08,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 321. [2020-08-18 18:30:08,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-08-18 18:30:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 369 transitions. [2020-08-18 18:30:08,063 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 369 transitions. Word has length 98 [2020-08-18 18:30:08,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:08,064 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 369 transitions. [2020-08-18 18:30:08,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:30:08,064 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 369 transitions. [2020-08-18 18:30:08,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 18:30:08,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:08,066 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] [2020-08-18 18:30:08,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:30:08,066 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:08,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1918249009, now seen corresponding path program 1 times [2020-08-18 18:30:08,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:08,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827493788] [2020-08-18 18:30:08,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,319 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:08,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:30:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 18:30:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 18:30:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:08,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:30:08,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827493788] [2020-08-18 18:30:08,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:08,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 18:30:08,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343036941] [2020-08-18 18:30:08,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:30:08,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:08,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:30:08,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:30:08,482 INFO L87 Difference]: Start difference. First operand 321 states and 369 transitions. Second operand 12 states. [2020-08-18 18:30:10,018 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:10,355 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:10,578 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:11,179 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:11,429 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:11,680 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:12,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:12,720 INFO L93 Difference]: Finished difference Result 729 states and 927 transitions. [2020-08-18 18:30:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:30:12,720 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2020-08-18 18:30:12,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:12,724 INFO L225 Difference]: With dead ends: 729 [2020-08-18 18:30:12,724 INFO L226 Difference]: Without dead ends: 436 [2020-08-18 18:30:12,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 18:30:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-08-18 18:30:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 329. [2020-08-18 18:30:12,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-08-18 18:30:12,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 377 transitions. [2020-08-18 18:30:12,787 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 377 transitions. Word has length 98 [2020-08-18 18:30:12,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:12,787 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 377 transitions. [2020-08-18 18:30:12,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:30:12,788 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 377 transitions. [2020-08-18 18:30:12,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 18:30:12,789 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:12,790 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] [2020-08-18 18:30:12,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:30:12,790 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:12,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:12,790 INFO L82 PathProgramCache]: Analyzing trace with hash -948667986, now seen corresponding path program 1 times [2020-08-18 18:30:12,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:12,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987649155] [2020-08-18 18:30:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,069 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:13,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:30:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 18:30:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 18:30:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:30:13,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987649155] [2020-08-18 18:30:13,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:13,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:30:13,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542632964] [2020-08-18 18:30:13,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:30:13,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:13,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:30:13,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:30:13,275 INFO L87 Difference]: Start difference. First operand 329 states and 377 transitions. Second operand 8 states. [2020-08-18 18:30:13,728 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:14,239 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:16,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:16,368 INFO L93 Difference]: Finished difference Result 1028 states and 1346 transitions. [2020-08-18 18:30:16,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 18:30:16,369 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-18 18:30:16,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:16,374 INFO L225 Difference]: With dead ends: 1028 [2020-08-18 18:30:16,375 INFO L226 Difference]: Without dead ends: 727 [2020-08-18 18:30:16,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-08-18 18:30:16,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-08-18 18:30:16,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 595. [2020-08-18 18:30:16,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-08-18 18:30:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 705 transitions. [2020-08-18 18:30:16,478 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 705 transitions. Word has length 98 [2020-08-18 18:30:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:16,479 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 705 transitions. [2020-08-18 18:30:16,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:30:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 705 transitions. [2020-08-18 18:30:16,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 18:30:16,481 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:16,481 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] [2020-08-18 18:30:16,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:30:16,482 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:16,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:16,482 INFO L82 PathProgramCache]: Analyzing trace with hash -944641720, now seen corresponding path program 1 times [2020-08-18 18:30:16,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:16,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654850731] [2020-08-18 18:30:16,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,747 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:16,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:30:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:30:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:30:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 18:30:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 18:30:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 18:30:17,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654850731] [2020-08-18 18:30:17,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:30:17,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 18:30:17,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354633584] [2020-08-18 18:30:17,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 18:30:17,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:17,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 18:30:17,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:30:17,021 INFO L87 Difference]: Start difference. First operand 595 states and 705 transitions. Second operand 18 states. [2020-08-18 18:30:17,705 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:18,031 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:18,283 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:18,527 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:19,144 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:19,984 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:20,325 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:20,604 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:20,855 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:21,203 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:21,479 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:22,069 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 18:30:22,636 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 18:30:24,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:24,273 INFO L93 Difference]: Finished difference Result 1262 states and 1575 transitions. [2020-08-18 18:30:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-18 18:30:24,274 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2020-08-18 18:30:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:24,279 INFO L225 Difference]: With dead ends: 1262 [2020-08-18 18:30:24,279 INFO L226 Difference]: Without dead ends: 695 [2020-08-18 18:30:24,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=428, Invalid=1734, Unknown=0, NotChecked=0, Total=2162 [2020-08-18 18:30:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-08-18 18:30:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 572. [2020-08-18 18:30:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-08-18 18:30:24,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 666 transitions. [2020-08-18 18:30:24,400 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 666 transitions. Word has length 102 [2020-08-18 18:30:24,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:24,401 INFO L479 AbstractCegarLoop]: Abstraction has 572 states and 666 transitions. [2020-08-18 18:30:24,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 18:30:24,401 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 666 transitions. [2020-08-18 18:30:24,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 18:30:24,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:24,404 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] [2020-08-18 18:30:24,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:30:24,404 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:24,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:24,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1654540536, now seen corresponding path program 1 times [2020-08-18 18:30:24,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:24,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567571275] [2020-08-18 18:30:24,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,691 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:24,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:30:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:30:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:30:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 18:30:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 18:30:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 18:30:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 18:30:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 18:30:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 18:30:24,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567571275] [2020-08-18 18:30:24,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:30:24,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 18:30:24,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478680564] [2020-08-18 18:30:24,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:30:24,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:24,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:30:24,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:30:24,869 INFO L87 Difference]: Start difference. First operand 572 states and 666 transitions. Second operand 9 states. [2020-08-18 18:30:25,236 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:26,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:26,991 INFO L93 Difference]: Finished difference Result 1091 states and 1387 transitions. [2020-08-18 18:30:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 18:30:26,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-08-18 18:30:26,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:26,999 INFO L225 Difference]: With dead ends: 1091 [2020-08-18 18:30:27,000 INFO L226 Difference]: Without dead ends: 1088 [2020-08-18 18:30:27,001 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 [2020-08-18 18:30:27,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2020-08-18 18:30:27,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 901. [2020-08-18 18:30:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-08-18 18:30:27,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1053 transitions. [2020-08-18 18:30:27,208 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1053 transitions. Word has length 137 [2020-08-18 18:30:27,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:27,209 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1053 transitions. [2020-08-18 18:30:27,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:30:27,209 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1053 transitions. [2020-08-18 18:30:27,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-08-18 18:30:27,216 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:27,216 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] [2020-08-18 18:30:27,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:30:27,217 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:27,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:27,217 INFO L82 PathProgramCache]: Analyzing trace with hash -402984640, now seen corresponding path program 1 times [2020-08-18 18:30:27,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:27,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681575740] [2020-08-18 18:30:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:30:27,310 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:30:27,311 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:30:27,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 18:30:27,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:30:27 BoogieIcfgContainer [2020-08-18 18:30:27,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:30:27,370 INFO L168 Benchmark]: Toolchain (without parser) took 41993.61 ms. Allocated memory was 141.0 MB in the beginning and 669.0 MB in the end (delta: 528.0 MB). Free memory was 102.8 MB in the beginning and 340.9 MB in the end (delta: -238.1 MB). Peak memory consumption was 289.9 MB. Max. memory is 7.1 GB. [2020-08-18 18:30:27,372 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 18:30:27,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.14 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 173.0 MB in the end (delta: -70.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:30:27,377 INFO L168 Benchmark]: Boogie Preprocessor took 108.69 ms. Allocated memory is still 205.0 MB. Free memory was 173.0 MB in the beginning and 169.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 18:30:27,379 INFO L168 Benchmark]: RCFGBuilder took 1155.35 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 169.0 MB in the beginning and 193.6 MB in the end (delta: -24.6 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-08-18 18:30:27,382 INFO L168 Benchmark]: TraceAbstraction took 40078.77 ms. Allocated memory was 235.4 MB in the beginning and 669.0 MB in the end (delta: 433.6 MB). Free memory was 192.2 MB in the beginning and 340.9 MB in the end (delta: -148.7 MB). Peak memory consumption was 284.9 MB. Max. memory is 7.1 GB. [2020-08-18 18:30:27,386 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 646.14 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 173.0 MB in the end (delta: -70.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.69 ms. Allocated memory is still 205.0 MB. Free memory was 173.0 MB in the beginning and 169.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1155.35 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 169.0 MB in the beginning and 193.6 MB in the end (delta: -24.6 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 40078.77 ms. Allocated memory was 235.4 MB in the beginning and 669.0 MB in the end (delta: 433.6 MB). Free memory was 192.2 MB in the beginning and 340.9 MB in the end (delta: -148.7 MB). Peak memory consumption was 284.9 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: 39.9s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 33.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1270 SDtfs, 3482 SDslu, 1752 SDs, 0 SdLazy, 7456 SolverSat, 2228 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 537 GetRequests, 339 SyntacticMatches, 3 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 14.8s 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: 0.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 969 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s 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...