/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:02:06,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:02:06,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:02:06,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:02:06,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:02:06,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:02:06,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:02:06,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:02:06,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:02:06,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:02:06,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:02:06,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:02:06,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:02:06,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:02:06,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:02:06,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:02:06,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:02:06,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:02:06,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:02:06,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:02:06,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:02:06,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:02:06,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:02:06,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:02:06,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:02:06,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:02:06,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:02:06,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:02:06,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:02:06,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:02:06,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:02:06,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:02:06,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:02:06,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:02:06,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:02:06,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:02:06,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:02:06,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:02:06,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:02:06,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:02:06,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:02:06,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:02:06,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:02:06,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:02:06,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:02:06,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:02:06,598 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:02:06,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:02:06,598 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:02:06,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:02:06,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:02:06,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:02:06,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:02:06,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:02:06,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:02:06,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:02:06,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:02:06,601 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:02:06,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:02:06,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:02:06,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:02:06,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:02:06,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:02:06,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:02:06,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:02:06,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:02:06,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:02:06,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:02:06,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:02:06,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:02:06,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:02:06,604 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 -> false [2020-09-21 10:02:07,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:02:07,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:02:07,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:02:07,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:02:07,096 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:02:07,097 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-09-21 10:02:07,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92570c190/ab77d950421a4210bb31ead14858307f/FLAGc470b38ad [2020-09-21 10:02:07,812 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:02:07,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-09-21 10:02:07,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92570c190/ab77d950421a4210bb31ead14858307f/FLAGc470b38ad [2020-09-21 10:02:08,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92570c190/ab77d950421a4210bb31ead14858307f [2020-09-21 10:02:08,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:02:08,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:02:08,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:02:08,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:02:08,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:02:08,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:02:08" (1/1) ... [2020-09-21 10:02:08,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7073dec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:08, skipping insertion in model container [2020-09-21 10:02:08,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:02:08" (1/1) ... [2020-09-21 10:02:08,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:02:08,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:02:08,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:02:08,648 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:02:08,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:02:08,807 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:02:08,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:08 WrapperNode [2020-09-21 10:02:08,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:02:08,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:02:08,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:02:08,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:02:08,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:08" (1/1) ... [2020-09-21 10:02:08,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:08" (1/1) ... [2020-09-21 10:02:08,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:08" (1/1) ... [2020-09-21 10:02:08,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:08" (1/1) ... [2020-09-21 10:02:08,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:08" (1/1) ... [2020-09-21 10:02:08,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:08" (1/1) ... [2020-09-21 10:02:08,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:08" (1/1) ... [2020-09-21 10:02:08,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:02:08,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:02:08,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:02:08,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:02:08,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:02:09,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:02:09,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:02:09,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:02:09,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:02:09,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:02:09,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:02:09,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:02:09,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:02:09,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:02:09,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:02:09,043 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:02:09,044 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:02:09,044 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:02:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:02:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:02:09,046 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:02:09,046 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:02:09,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:02:09,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:02:09,047 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:02:09,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:02:09,047 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 10:02:09,047 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 10:02:09,047 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:02:09,047 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:02:09,048 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:02:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:02:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:02:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:02:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:02:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 10:02:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:02:09,050 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:02:09,050 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:02:09,050 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:02:09,050 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:02:09,050 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:02:09,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:02:09,050 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:02:09,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:02:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:02:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:02:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:02:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:02:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:02:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:02:09,052 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:02:09,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:02:09,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:02:09,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:02:09,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:02:09,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:02:09,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:02:09,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:02:09,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:02:09,053 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:02:09,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:02:09,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:02:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:02:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:02:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:02:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:02:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:02:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 10:02:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 10:02:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:02:09,056 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:02:09,056 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:02:09,056 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:02:09,056 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:02:09,056 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:02:09,056 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:02:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:02:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:02:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:02:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:02:09,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 10:02:09,058 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:02:09,058 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:02:09,059 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:02:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:02:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:02:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:02:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:02:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:02:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:02:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:02:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:02:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:02:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:02:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:02:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:02:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:02:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:02:10,164 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:02:10,164 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:02:10,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:02:10 BoogieIcfgContainer [2020-09-21 10:02:10,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:02:10,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:02:10,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:02:10,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:02:10,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:02:08" (1/3) ... [2020-09-21 10:02:10,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50571a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:02:10, skipping insertion in model container [2020-09-21 10:02:10,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:08" (2/3) ... [2020-09-21 10:02:10,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50571a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:02:10, skipping insertion in model container [2020-09-21 10:02:10,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:02:10" (3/3) ... [2020-09-21 10:02:10,180 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2020-09-21 10:02:10,192 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:02:10,203 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:02:10,226 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:02:10,258 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:02:10,258 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:02:10,259 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:02:10,259 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:02:10,259 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:02:10,259 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:02:10,259 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:02:10,259 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:02:10,283 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-09-21 10:02:10,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 10:02:10,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:10,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:10,295 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:10,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:10,303 INFO L82 PathProgramCache]: Analyzing trace with hash -325582978, now seen corresponding path program 1 times [2020-09-21 10:02:10,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:10,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308082114] [2020-09-21 10:02:10,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:11,052 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:11,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:11,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:11,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:11,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:11,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:11,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:02:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:11,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:02:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:11,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308082114] [2020-09-21 10:02:11,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:11,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:02:11,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172569870] [2020-09-21 10:02:11,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:02:11,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:11,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:02:11,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:02:11,191 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-09-21 10:02:12,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:12,442 INFO L93 Difference]: Finished difference Result 304 states and 394 transitions. [2020-09-21 10:02:12,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:02:12,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 10:02:12,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:12,463 INFO L225 Difference]: With dead ends: 304 [2020-09-21 10:02:12,463 INFO L226 Difference]: Without dead ends: 165 [2020-09-21 10:02:12,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:02:12,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-21 10:02:12,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 130. [2020-09-21 10:02:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-21 10:02:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-09-21 10:02:12,569 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-09-21 10:02:12,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:12,570 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-09-21 10:02:12,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:02:12,571 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-09-21 10:02:12,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 10:02:12,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:12,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:12,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:02:12,576 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:12,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:12,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1889235753, now seen corresponding path program 1 times [2020-09-21 10:02:12,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:12,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433990661] [2020-09-21 10:02:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:12,913 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:12,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:12,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:12,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:12,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:02:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:12,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:02:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:12,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433990661] [2020-09-21 10:02:12,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:12,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:02:12,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424388982] [2020-09-21 10:02:12,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:02:12,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:12,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:02:12,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:02:12,993 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 4 states. [2020-09-21 10:02:13,479 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:14,385 INFO L93 Difference]: Finished difference Result 224 states and 271 transitions. [2020-09-21 10:02:14,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:02:14,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 10:02:14,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:14,390 INFO L225 Difference]: With dead ends: 224 [2020-09-21 10:02:14,390 INFO L226 Difference]: Without dead ends: 149 [2020-09-21 10:02:14,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:02:14,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-21 10:02:14,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 121. [2020-09-21 10:02:14,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-21 10:02:14,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-09-21 10:02:14,437 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-09-21 10:02:14,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:14,438 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-09-21 10:02:14,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:02:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-09-21 10:02:14,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:02:14,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:14,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:14,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:02:14,450 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:14,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:14,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1400660330, now seen corresponding path program 1 times [2020-09-21 10:02:14,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:14,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318644106] [2020-09-21 10:02:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:14,940 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:14,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:15,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:15,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:15,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:15,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:02:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:15,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:02:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:15,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318644106] [2020-09-21 10:02:15,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:15,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:02:15,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204694892] [2020-09-21 10:02:15,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:02:15,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:15,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:02:15,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:02:15,038 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 8 states. [2020-09-21 10:02:15,489 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:15,872 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:16,204 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:16,522 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:17,383 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:19,349 INFO L93 Difference]: Finished difference Result 418 states and 512 transitions. [2020-09-21 10:02:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:02:19,350 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-09-21 10:02:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:19,355 INFO L225 Difference]: With dead ends: 418 [2020-09-21 10:02:19,356 INFO L226 Difference]: Without dead ends: 321 [2020-09-21 10:02:19,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-21 10:02:19,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-09-21 10:02:19,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 244. [2020-09-21 10:02:19,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-09-21 10:02:19,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 290 transitions. [2020-09-21 10:02:19,431 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 290 transitions. Word has length 52 [2020-09-21 10:02:19,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:19,432 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 290 transitions. [2020-09-21 10:02:19,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:02:19,432 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 290 transitions. [2020-09-21 10:02:19,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 10:02:19,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:19,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:19,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:02:19,434 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:19,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:19,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1567525845, now seen corresponding path program 1 times [2020-09-21 10:02:19,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:19,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283537621] [2020-09-21 10:02:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,858 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:19,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:02:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:02:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:02:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:19,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283537621] [2020-09-21 10:02:19,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:19,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:02:19,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457301739] [2020-09-21 10:02:19,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:02:19,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:19,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:02:19,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:02:19,966 INFO L87 Difference]: Start difference. First operand 244 states and 290 transitions. Second operand 8 states. [2020-09-21 10:02:20,414 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:21,581 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:21,953 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:22,277 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:22,564 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:23,003 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:24,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:24,186 INFO L93 Difference]: Finished difference Result 793 states and 1017 transitions. [2020-09-21 10:02:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:02:24,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 10:02:24,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:24,192 INFO L225 Difference]: With dead ends: 793 [2020-09-21 10:02:24,193 INFO L226 Difference]: Without dead ends: 573 [2020-09-21 10:02:24,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:02:24,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-09-21 10:02:24,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 443. [2020-09-21 10:02:24,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-09-21 10:02:24,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 530 transitions. [2020-09-21 10:02:24,306 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 530 transitions. Word has length 57 [2020-09-21 10:02:24,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:24,306 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 530 transitions. [2020-09-21 10:02:24,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:02:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 530 transitions. [2020-09-21 10:02:24,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 10:02:24,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:24,309 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] [2020-09-21 10:02:24,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:02:24,310 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:24,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:24,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1743298223, now seen corresponding path program 1 times [2020-09-21 10:02:24,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:24,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302929886] [2020-09-21 10:02:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:24,711 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:24,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:24,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:24,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:24,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:24,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:24,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:24,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:02:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:24,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:02:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:24,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 10:02:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:24,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302929886] [2020-09-21 10:02:24,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:24,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:02:24,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715188195] [2020-09-21 10:02:24,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:02:24,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:24,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:02:24,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:02:24,884 INFO L87 Difference]: Start difference. First operand 443 states and 530 transitions. Second operand 9 states. [2020-09-21 10:02:25,396 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:26,490 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:26,832 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:27,198 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:27,931 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:28,252 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:29,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:29,289 INFO L93 Difference]: Finished difference Result 1254 states and 1644 transitions. [2020-09-21 10:02:29,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 10:02:29,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-09-21 10:02:29,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:29,298 INFO L225 Difference]: With dead ends: 1254 [2020-09-21 10:02:29,298 INFO L226 Difference]: Without dead ends: 835 [2020-09-21 10:02:29,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 10:02:29,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-09-21 10:02:29,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 671. [2020-09-21 10:02:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-09-21 10:02:29,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 815 transitions. [2020-09-21 10:02:29,442 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 815 transitions. Word has length 61 [2020-09-21 10:02:29,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:29,442 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 815 transitions. [2020-09-21 10:02:29,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:02:29,443 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 815 transitions. [2020-09-21 10:02:29,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 10:02:29,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:29,446 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] [2020-09-21 10:02:29,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:02:29,447 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:29,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:29,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1614775342, now seen corresponding path program 1 times [2020-09-21 10:02:29,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:29,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434681040] [2020-09-21 10:02:29,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,830 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:29,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:02:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 10:02:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 10:02:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:02:30,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434681040] [2020-09-21 10:02:30,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:30,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:02:30,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822244148] [2020-09-21 10:02:30,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:02:30,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:30,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:02:30,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:02:30,002 INFO L87 Difference]: Start difference. First operand 671 states and 815 transitions. Second operand 9 states. [2020-09-21 10:02:30,507 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:31,624 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:31,929 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:02:32,254 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:32,582 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:34,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:34,612 INFO L93 Difference]: Finished difference Result 2315 states and 3234 transitions. [2020-09-21 10:02:34,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:02:34,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-09-21 10:02:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:34,632 INFO L225 Difference]: With dead ends: 2315 [2020-09-21 10:02:34,632 INFO L226 Difference]: Without dead ends: 1668 [2020-09-21 10:02:34,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:02:34,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-09-21 10:02:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1271. [2020-09-21 10:02:34,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-09-21 10:02:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1540 transitions. [2020-09-21 10:02:34,901 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1540 transitions. Word has length 94 [2020-09-21 10:02:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:34,901 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1540 transitions. [2020-09-21 10:02:34,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:02:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1540 transitions. [2020-09-21 10:02:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 10:02:34,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:34,906 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] [2020-09-21 10:02:34,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:02:34,907 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:34,907 INFO L82 PathProgramCache]: Analyzing trace with hash 709252497, now seen corresponding path program 1 times [2020-09-21 10:02:34,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:34,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165832772] [2020-09-21 10:02:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,258 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:35,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:02:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 10:02:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 10:02:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:02:35,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165832772] [2020-09-21 10:02:35,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:35,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:02:35,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527710762] [2020-09-21 10:02:35,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:02:35,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:35,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:02:35,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:02:35,471 INFO L87 Difference]: Start difference. First operand 1271 states and 1540 transitions. Second operand 9 states. [2020-09-21 10:02:36,672 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:36,954 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:02:37,273 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:37,566 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:38,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:38,760 INFO L93 Difference]: Finished difference Result 2944 states and 3942 transitions. [2020-09-21 10:02:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:02:38,761 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-09-21 10:02:38,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:38,779 INFO L225 Difference]: With dead ends: 2944 [2020-09-21 10:02:38,780 INFO L226 Difference]: Without dead ends: 1697 [2020-09-21 10:02:38,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:02:38,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-09-21 10:02:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1311. [2020-09-21 10:02:39,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-09-21 10:02:39,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1580 transitions. [2020-09-21 10:02:39,169 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1580 transitions. Word has length 94 [2020-09-21 10:02:39,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:39,170 INFO L479 AbstractCegarLoop]: Abstraction has 1311 states and 1580 transitions. [2020-09-21 10:02:39,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:02:39,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1580 transitions. [2020-09-21 10:02:39,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 10:02:39,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:39,176 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] [2020-09-21 10:02:39,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:02:39,177 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:39,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:39,177 INFO L82 PathProgramCache]: Analyzing trace with hash -188140781, now seen corresponding path program 1 times [2020-09-21 10:02:39,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:39,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372964929] [2020-09-21 10:02:39,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,521 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:39,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:02:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 10:02:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 10:02:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:02:39,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372964929] [2020-09-21 10:02:39,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:39,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 10:02:39,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343499133] [2020-09-21 10:02:39,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 10:02:39,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:39,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 10:02:39,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:02:39,712 INFO L87 Difference]: Start difference. First operand 1311 states and 1580 transitions. Second operand 11 states. [2020-09-21 10:02:40,416 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:40,694 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:40,976 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:41,815 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:42,142 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:42,458 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:43,825 INFO L93 Difference]: Finished difference Result 2566 states and 3327 transitions. [2020-09-21 10:02:43,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:02:43,831 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-09-21 10:02:43,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:43,840 INFO L225 Difference]: With dead ends: 2566 [2020-09-21 10:02:43,840 INFO L226 Difference]: Without dead ends: 1279 [2020-09-21 10:02:43,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:02:43,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-09-21 10:02:44,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1029. [2020-09-21 10:02:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-09-21 10:02:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1212 transitions. [2020-09-21 10:02:44,049 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1212 transitions. Word has length 94 [2020-09-21 10:02:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:44,050 INFO L479 AbstractCegarLoop]: Abstraction has 1029 states and 1212 transitions. [2020-09-21 10:02:44,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 10:02:44,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1212 transitions. [2020-09-21 10:02:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-09-21 10:02:44,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:44,054 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] [2020-09-21 10:02:44,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:02:44,055 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:44,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:44,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1347463022, now seen corresponding path program 1 times [2020-09-21 10:02:44,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:44,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339837045] [2020-09-21 10:02:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,423 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:44,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:02:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:02:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:02:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-21 10:02:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-21 10:02:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:02:44,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339837045] [2020-09-21 10:02:44,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:02:44,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-21 10:02:44,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287529907] [2020-09-21 10:02:44,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-21 10:02:44,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:44,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-21 10:02:44,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-09-21 10:02:44,794 INFO L87 Difference]: Start difference. First operand 1029 states and 1212 transitions. Second operand 17 states. [2020-09-21 10:02:45,464 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:45,851 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:02:46,193 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:02:46,486 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:02:47,221 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:47,982 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:48,480 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:49,817 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:50,187 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:50,599 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:50,909 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:51,602 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-09-21 10:02:52,216 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-09-21 10:02:53,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:53,762 INFO L93 Difference]: Finished difference Result 2268 states and 2829 transitions. [2020-09-21 10:02:53,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-21 10:02:53,762 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-09-21 10:02:53,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:53,770 INFO L225 Difference]: With dead ends: 2268 [2020-09-21 10:02:53,770 INFO L226 Difference]: Without dead ends: 1263 [2020-09-21 10:02:53,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=328, Invalid=1312, Unknown=0, NotChecked=0, Total=1640 [2020-09-21 10:02:53,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2020-09-21 10:02:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1007. [2020-09-21 10:02:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2020-09-21 10:02:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1163 transitions. [2020-09-21 10:02:53,983 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1163 transitions. Word has length 98 [2020-09-21 10:02:53,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:53,985 INFO L479 AbstractCegarLoop]: Abstraction has 1007 states and 1163 transitions. [2020-09-21 10:02:53,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-21 10:02:53,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1163 transitions. [2020-09-21 10:02:53,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-21 10:02:53,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:53,991 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:53,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:02:53,992 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:53,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:53,992 INFO L82 PathProgramCache]: Analyzing trace with hash 555633972, now seen corresponding path program 1 times [2020-09-21 10:02:53,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:53,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372002607] [2020-09-21 10:02:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:02:54,109 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:02:54,110 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:02:54,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:02:54,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:02:54 BoogieIcfgContainer [2020-09-21 10:02:54,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:02:54,170 INFO L168 Benchmark]: Toolchain (without parser) took 46065.23 ms. Allocated memory was 137.9 MB in the beginning and 745.5 MB in the end (delta: 607.6 MB). Free memory was 100.1 MB in the beginning and 292.3 MB in the end (delta: -192.2 MB). Peak memory consumption was 415.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:02:54,174 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 10:02:54,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.86 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 99.4 MB in the beginning and 166.8 MB in the end (delta: -67.4 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:02:54,177 INFO L168 Benchmark]: Boogie Preprocessor took 122.00 ms. Allocated memory is still 200.3 MB. Free memory was 166.8 MB in the beginning and 162.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:02:54,180 INFO L168 Benchmark]: RCFGBuilder took 1240.14 ms. Allocated memory was 200.3 MB in the beginning and 230.2 MB in the end (delta: 29.9 MB). Free memory was 162.2 MB in the beginning and 192.2 MB in the end (delta: -30.0 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:02:54,182 INFO L168 Benchmark]: TraceAbstraction took 43995.15 ms. Allocated memory was 230.2 MB in the beginning and 745.5 MB in the end (delta: 515.4 MB). Free memory was 192.2 MB in the beginning and 292.3 MB in the end (delta: -100.1 MB). Peak memory consumption was 415.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:02:54,191 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 699.86 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 99.4 MB in the beginning and 166.8 MB in the end (delta: -67.4 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.00 ms. Allocated memory is still 200.3 MB. Free memory was 166.8 MB in the beginning and 162.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1240.14 ms. Allocated memory was 200.3 MB in the beginning and 230.2 MB in the end (delta: 29.9 MB). Free memory was 162.2 MB in the beginning and 192.2 MB in the end (delta: -30.0 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 43995.15 ms. Allocated memory was 230.2 MB in the beginning and 745.5 MB in the end (delta: 515.4 MB). Free memory was 192.2 MB in the beginning and 292.3 MB in the end (delta: -100.1 MB). Peak memory consumption was 415.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L498] int pumpRunning = 0; [L499] int systemActive = 1; [L693] int waterLevel = 1; [L694] int methaneLevelCritical = 0; [L851] int cleanupTimeShifts = 4; [L924] int retValue_acc ; [L925] int tmp ; [L929] FCALL select_helpers() [L930] FCALL select_features() [L931] CALL, EXPR valid_product() [L842] int retValue_acc ; [L845] retValue_acc = 1 [L846] return (retValue_acc); [L931] RET, EXPR valid_product() [L931] tmp = valid_product() [L933] COND TRUE \read(tmp) [L935] FCALL setup() [L936] CALL runTest() [L918] CALL test() [L422] int splverifierCounter ; [L423] int tmp ; [L424] int tmp___0 ; [L425] int tmp___1 ; [L426] int tmp___2 ; [L429] splverifierCounter = 0 [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp) [L443] CALL waterRise() [L711] COND TRUE waterLevel < 2 [L712] waterLevel = waterLevel + 1 [L443] RET waterRise() [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___0)) [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) [L478] CALL timeShift() [L506] COND FALSE !(\read(pumpRunning)) [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND TRUE ! pumpRunning [L540] CALL, EXPR isHighWaterLevel() [L650] int retValue_acc ; [L651] int tmp ; [L652] int tmp___0 ; [L656] CALL, EXPR isHighWaterSensorDry() [L773] int retValue_acc ; [L776] COND FALSE !(waterLevel < 2) [L780] retValue_acc = 0 [L781] return (retValue_acc); [L656] RET, EXPR isHighWaterSensorDry() [L656] tmp = isHighWaterSensorDry() [L658] COND FALSE !(\read(tmp)) [L661] tmp___0 = 1 [L663] retValue_acc = tmp___0 [L664] return (retValue_acc); [L540] RET, EXPR isHighWaterLevel() [L540] tmp = isHighWaterLevel() [L542] COND TRUE \read(tmp) [L544] CALL activatePump() [L569] int tmp ; [L573] CALL, EXPR isMethaneAlarm() [L594] int retValue_acc ; [L598] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L598] RET, EXPR isMethaneLevelCritical() [L598] retValue_acc = isMethaneLevelCritical() [L600] return (retValue_acc); [L573] RET, EXPR isMethaneAlarm() [L573] tmp = isMethaneAlarm() [L575] COND FALSE !(\read(tmp)) [L579] CALL activatePump__wrappee__highWaterSensor() [L563] pumpRunning = 1 [L579] RET activatePump__wrappee__highWaterSensor() [L544] RET activatePump() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND FALSE !(\read(tmp)) [L521] RET __utac_acc__Specification1_spec__1() [L478] RET timeShift() [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___0) [L453] CALL changeMethaneLevel() [L723] COND FALSE !(\read(methaneLevelCritical)) [L726] methaneLevelCritical = 1 [L453] RET changeMethaneLevel() [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) [L478] CALL timeShift() [L506] COND TRUE \read(pumpRunning) [L508] CALL lowerWaterLevel() [L699] COND TRUE waterLevel > 0 [L700] waterLevel = waterLevel - 1 [L508] RET lowerWaterLevel() [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND FALSE !(! pumpRunning) [L553] FCALL processEnvironment__wrappee__base() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND TRUE \read(tmp) [L797] CALL, EXPR isPumpRunning() [L605] int retValue_acc ; [L608] retValue_acc = pumpRunning [L609] return (retValue_acc); [L797] RET, EXPR isPumpRunning() [L797] tmp___0 = isPumpRunning() [L799] COND TRUE \read(tmp___0) [L801] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 43.8s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 36.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1086 SDtfs, 2271 SDslu, 1554 SDs, 0 SdLazy, 7793 SolverSat, 1524 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1311occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 1723 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 777 NumberOfCodeBlocks, 777 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 634 ConstructedInterpolants, 0 QuantifiedInterpolants, 196729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 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...