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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:37:13,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:37:13,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:37:13,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:37:13,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:37:13,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:37:13,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:37:13,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:37:13,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:37:13,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:37:13,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:37:13,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:37:13,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:37:13,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:37:13,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:37:13,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:37:13,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:37:13,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:37:13,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:37:13,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:37:13,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:37:13,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:37:13,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:37:13,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:37:13,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:37:13,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:37:13,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:37:13,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:37:13,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:37:13,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:37:13,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:37:13,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:37:13,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:37:13,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:37:13,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:37:13,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:37:13,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:37:13,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:37:13,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:37:13,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:37:13,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:37:13,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:37:13,696 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:37:13,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:37:13,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:37:13,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:37:13,698 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:37:13,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:37:13,699 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:37:13,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:37:13,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:37:13,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:37:13,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:37:13,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:37:13,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:37:13,700 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:37:13,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:37:13,700 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:37:13,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:37:13,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:37:13,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:37:13,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:37:13,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:37:13,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:37:13,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:37:13,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:37:13,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:37:13,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:37:13,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:37:13,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:37:13,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:37:14,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:37:14,022 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:37:14,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:37:14,028 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:37:14,029 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:37:14,029 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2019-10-13 19:37:14,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a571bae/5159e426f2664388bfca79315a90afc9/FLAGe31cf6906 [2019-10-13 19:37:14,639 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:37:14,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2019-10-13 19:37:14,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a571bae/5159e426f2664388bfca79315a90afc9/FLAGe31cf6906 [2019-10-13 19:37:14,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a571bae/5159e426f2664388bfca79315a90afc9 [2019-10-13 19:37:14,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:37:14,947 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:37:14,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:14,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:37:14,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:37:14,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:14" (1/1) ... [2019-10-13 19:37:14,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4819bea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:14, skipping insertion in model container [2019-10-13 19:37:14,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:14" (1/1) ... [2019-10-13 19:37:14,960 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:37:15,015 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:37:15,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:15,524 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:37:15,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:15,665 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:37:15,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:15 WrapperNode [2019-10-13 19:37:15,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:15,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:37:15,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:37:15,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:37:15,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:15" (1/1) ... [2019-10-13 19:37:15,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:15" (1/1) ... [2019-10-13 19:37:15,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:15" (1/1) ... [2019-10-13 19:37:15,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:15" (1/1) ... [2019-10-13 19:37:15,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:15" (1/1) ... [2019-10-13 19:37:15,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:15" (1/1) ... [2019-10-13 19:37:15,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:15" (1/1) ... [2019-10-13 19:37:15,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:37:15,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:37:15,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:37:15,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:37:15,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-10-13 19:37:15,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:37:15,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:37:15,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:15,807 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:37:15,807 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:37:15,807 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:37:15,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:37:15,808 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:37:15,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:37:15,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:37:15,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:37:15,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:37:15,809 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:37:15,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:37:15,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:37:15,809 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:37:15,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:37:15,810 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:37:15,810 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:37:15,810 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:37:15,810 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:37:15,810 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:37:15,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:15,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:15,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:15,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:37:15,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:37:15,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:37:15,811 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:37:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:37:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:37:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:37:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:37:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:37:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:37:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:37:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:37:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:37:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:37:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:37:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:37:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:37:15,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 19:37:15,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 19:37:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:37:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:37:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:37:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:37:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:37:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:37:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:37:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:37:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:37:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:37:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:37:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:37:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:37:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:37:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:37:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:37:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:37:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:37:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 19:37:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:37:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:37:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:37:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:37:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:37:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:37:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:37:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:37:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:37:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:37:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:37:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:37:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:37:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:37:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:37:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:37:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:37:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:37:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:37:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:37:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:37:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:37:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:37:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:37:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 19:37:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:37:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:37:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:37:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:37:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:37:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:37:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:37:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:37:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:37:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:37:16,926 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:37:16,927 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:37:16,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:16 BoogieIcfgContainer [2019-10-13 19:37:16,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:37:16,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:37:16,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:37:16,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:37:16,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:37:14" (1/3) ... [2019-10-13 19:37:16,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca35894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:16, skipping insertion in model container [2019-10-13 19:37:16,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:15" (2/3) ... [2019-10-13 19:37:16,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca35894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:16, skipping insertion in model container [2019-10-13 19:37:16,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:16" (3/3) ... [2019-10-13 19:37:16,941 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product60.cil.c [2019-10-13 19:37:16,951 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:37:16,961 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:37:16,972 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:37:17,017 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:37:17,017 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:37:17,018 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:37:17,018 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:37:17,018 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:37:17,019 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:37:17,020 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:37:17,021 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:37:17,050 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2019-10-13 19:37:17,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:37:17,065 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:17,067 INFO L380 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] [2019-10-13 19:37:17,070 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:17,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:17,076 INFO L82 PathProgramCache]: Analyzing trace with hash 694173544, now seen corresponding path program 1 times [2019-10-13 19:37:17,086 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:17,086 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927782115] [2019-10-13 19:37:17,087 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:17,087 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:17,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,712 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:17,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927782115] [2019-10-13 19:37:17,837 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:17,838 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:37:17,838 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022340475] [2019-10-13 19:37:17,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:37:17,846 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:17,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:37:17,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:37:17,865 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 4 states. [2019-10-13 19:37:19,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:19,200 INFO L93 Difference]: Finished difference Result 347 states and 448 transitions. [2019-10-13 19:37:19,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:37:19,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-13 19:37:19,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:19,222 INFO L225 Difference]: With dead ends: 347 [2019-10-13 19:37:19,223 INFO L226 Difference]: Without dead ends: 193 [2019-10-13 19:37:19,236 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:37:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-10-13 19:37:19,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 155. [2019-10-13 19:37:19,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-10-13 19:37:19,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 182 transitions. [2019-10-13 19:37:19,371 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 182 transitions. Word has length 51 [2019-10-13 19:37:19,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:19,371 INFO L462 AbstractCegarLoop]: Abstraction has 155 states and 182 transitions. [2019-10-13 19:37:19,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:37:19,372 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 182 transitions. [2019-10-13 19:37:19,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:37:19,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:19,375 INFO L380 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] [2019-10-13 19:37:19,375 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:19,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:19,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1863175654, now seen corresponding path program 1 times [2019-10-13 19:37:19,376 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:19,376 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76286045] [2019-10-13 19:37:19,376 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:19,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:19,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,776 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:19,848 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76286045] [2019-10-13 19:37:19,848 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:19,848 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:37:19,849 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304138358] [2019-10-13 19:37:19,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:37:19,862 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:19,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:37:19,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:37:19,867 INFO L87 Difference]: Start difference. First operand 155 states and 182 transitions. Second operand 5 states. [2019-10-13 19:37:20,467 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:21,630 INFO L93 Difference]: Finished difference Result 282 states and 347 transitions. [2019-10-13 19:37:21,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:37:21,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-13 19:37:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:21,638 INFO L225 Difference]: With dead ends: 282 [2019-10-13 19:37:21,638 INFO L226 Difference]: Without dead ends: 183 [2019-10-13 19:37:21,640 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:37:21,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-10-13 19:37:21,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 146. [2019-10-13 19:37:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-10-13 19:37:21,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 170 transitions. [2019-10-13 19:37:21,705 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 170 transitions. Word has length 52 [2019-10-13 19:37:21,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:21,705 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 170 transitions. [2019-10-13 19:37:21,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:37:21,706 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 170 transitions. [2019-10-13 19:37:21,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:37:21,711 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:21,711 INFO L380 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] [2019-10-13 19:37:21,711 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:21,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:21,712 INFO L82 PathProgramCache]: Analyzing trace with hash 284161781, now seen corresponding path program 1 times [2019-10-13 19:37:21,712 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:21,712 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030272324] [2019-10-13 19:37:21,713 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:21,713 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:21,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,062 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:22,144 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030272324] [2019-10-13 19:37:22,144 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:22,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:37:22,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15916464] [2019-10-13 19:37:22,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:37:22,145 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:22,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:37:22,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:37:22,146 INFO L87 Difference]: Start difference. First operand 146 states and 170 transitions. Second operand 9 states. [2019-10-13 19:37:22,642 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:22,970 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:23,250 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:23,547 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:24,500 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:26,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:26,866 INFO L93 Difference]: Finished difference Result 494 states and 617 transitions. [2019-10-13 19:37:26,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:37:26,866 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-10-13 19:37:26,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:26,871 INFO L225 Difference]: With dead ends: 494 [2019-10-13 19:37:26,872 INFO L226 Difference]: Without dead ends: 376 [2019-10-13 19:37:26,874 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:37:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2019-10-13 19:37:26,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 303. [2019-10-13 19:37:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2019-10-13 19:37:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 366 transitions. [2019-10-13 19:37:26,956 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 366 transitions. Word has length 57 [2019-10-13 19:37:26,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:26,956 INFO L462 AbstractCegarLoop]: Abstraction has 303 states and 366 transitions. [2019-10-13 19:37:26,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:37:26,956 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 366 transitions. [2019-10-13 19:37:26,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-13 19:37:26,959 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:26,960 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:26,960 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:26,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:26,960 INFO L82 PathProgramCache]: Analyzing trace with hash 367003092, now seen corresponding path program 1 times [2019-10-13 19:37:26,960 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:26,961 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033815933] [2019-10-13 19:37:26,961 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:26,961 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:26,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:27,330 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:27,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:27,437 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033815933] [2019-10-13 19:37:27,437 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:27,437 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:37:27,437 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104039168] [2019-10-13 19:37:27,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:37:27,438 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:27,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:37:27,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:37:27,439 INFO L87 Difference]: Start difference. First operand 303 states and 366 transitions. Second operand 9 states. [2019-10-13 19:37:28,026 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:29,323 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:29,741 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:30,070 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:30,403 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:32,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:32,096 INFO L93 Difference]: Finished difference Result 974 states and 1274 transitions. [2019-10-13 19:37:32,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 19:37:32,097 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-10-13 19:37:32,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:32,104 INFO L225 Difference]: With dead ends: 974 [2019-10-13 19:37:32,105 INFO L226 Difference]: Without dead ends: 699 [2019-10-13 19:37:32,107 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:37:32,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2019-10-13 19:37:32,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 554. [2019-10-13 19:37:32,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-10-13 19:37:32,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 672 transitions. [2019-10-13 19:37:32,247 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 672 transitions. Word has length 62 [2019-10-13 19:37:32,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:32,248 INFO L462 AbstractCegarLoop]: Abstraction has 554 states and 672 transitions. [2019-10-13 19:37:32,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:37:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 672 transitions. [2019-10-13 19:37:32,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-13 19:37:32,251 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:32,251 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:32,252 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:32,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:32,252 INFO L82 PathProgramCache]: Analyzing trace with hash -612062288, now seen corresponding path program 1 times [2019-10-13 19:37:32,252 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:32,253 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602839088] [2019-10-13 19:37:32,253 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:32,253 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:32,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,567 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:32,682 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602839088] [2019-10-13 19:37:32,682 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:32,683 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:37:32,683 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612854925] [2019-10-13 19:37:32,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:37:32,684 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:32,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:37:32,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:37:32,684 INFO L87 Difference]: Start difference. First operand 554 states and 672 transitions. Second operand 10 states. [2019-10-13 19:37:33,154 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:34,280 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:34,629 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:34,906 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:35,697 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:37,111 INFO L93 Difference]: Finished difference Result 1517 states and 2050 transitions. [2019-10-13 19:37:37,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 19:37:37,111 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-10-13 19:37:37,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:37,126 INFO L225 Difference]: With dead ends: 1517 [2019-10-13 19:37:37,126 INFO L226 Difference]: Without dead ends: 991 [2019-10-13 19:37:37,129 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-10-13 19:37:37,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2019-10-13 19:37:37,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 785. [2019-10-13 19:37:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2019-10-13 19:37:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 947 transitions. [2019-10-13 19:37:37,344 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 947 transitions. Word has length 66 [2019-10-13 19:37:37,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:37,345 INFO L462 AbstractCegarLoop]: Abstraction has 785 states and 947 transitions. [2019-10-13 19:37:37,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:37:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 947 transitions. [2019-10-13 19:37:37,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 19:37:37,351 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:37,351 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:37,352 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:37,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:37,352 INFO L82 PathProgramCache]: Analyzing trace with hash 637474211, now seen corresponding path program 1 times [2019-10-13 19:37:37,352 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:37,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050287401] [2019-10-13 19:37:37,353 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:37,354 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:37,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,650 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:37:37,835 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050287401] [2019-10-13 19:37:37,836 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:37,836 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:37:37,836 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569305180] [2019-10-13 19:37:37,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:37:37,837 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:37,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:37:37,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:37:37,838 INFO L87 Difference]: Start difference. First operand 785 states and 947 transitions. Second operand 10 states. [2019-10-13 19:37:39,085 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:39,364 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:37:39,655 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:39,922 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:41,392 INFO L93 Difference]: Finished difference Result 1830 states and 2467 transitions. [2019-10-13 19:37:41,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:37:41,392 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2019-10-13 19:37:41,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:41,406 INFO L225 Difference]: With dead ends: 1830 [2019-10-13 19:37:41,406 INFO L226 Difference]: Without dead ends: 1073 [2019-10-13 19:37:41,411 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:37:41,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2019-10-13 19:37:41,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 811. [2019-10-13 19:37:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2019-10-13 19:37:41,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 975 transitions. [2019-10-13 19:37:41,668 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 975 transitions. Word has length 104 [2019-10-13 19:37:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:41,668 INFO L462 AbstractCegarLoop]: Abstraction has 811 states and 975 transitions. [2019-10-13 19:37:41,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:37:41,669 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 975 transitions. [2019-10-13 19:37:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 19:37:41,672 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:41,673 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:41,673 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:41,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:41,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1729220383, now seen corresponding path program 1 times [2019-10-13 19:37:41,674 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:41,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915454411] [2019-10-13 19:37:41,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:41,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:41,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:41,962 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:37:42,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915454411] [2019-10-13 19:37:42,134 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:42,134 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:37:42,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856875862] [2019-10-13 19:37:42,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:37:42,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:42,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:37:42,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:37:42,137 INFO L87 Difference]: Start difference. First operand 811 states and 975 transitions. Second operand 12 states. [2019-10-13 19:37:42,890 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:43,149 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:43,395 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:44,375 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:44,687 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:44,964 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:46,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:46,421 INFO L93 Difference]: Finished difference Result 1876 states and 2515 transitions. [2019-10-13 19:37:46,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:37:46,421 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2019-10-13 19:37:46,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:46,432 INFO L225 Difference]: With dead ends: 1876 [2019-10-13 19:37:46,432 INFO L226 Difference]: Without dead ends: 1093 [2019-10-13 19:37:46,435 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:37:46,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2019-10-13 19:37:46,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 827. [2019-10-13 19:37:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2019-10-13 19:37:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 991 transitions. [2019-10-13 19:37:46,602 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 991 transitions. Word has length 104 [2019-10-13 19:37:46,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:46,603 INFO L462 AbstractCegarLoop]: Abstraction has 827 states and 991 transitions. [2019-10-13 19:37:46,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:37:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 991 transitions. [2019-10-13 19:37:46,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 19:37:46,606 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:46,606 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:46,606 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:46,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:46,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1969760512, now seen corresponding path program 1 times [2019-10-13 19:37:46,607 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:46,609 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622291529] [2019-10-13 19:37:46,609 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:46,609 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:46,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,907 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:37:47,059 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622291529] [2019-10-13 19:37:47,059 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:47,059 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:47,060 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137247454] [2019-10-13 19:37:47,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:47,060 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:47,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:47,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:47,061 INFO L87 Difference]: Start difference. First operand 827 states and 991 transitions. Second operand 8 states. [2019-10-13 19:37:47,626 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:48,187 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:51,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:51,146 INFO L93 Difference]: Finished difference Result 2807 states and 3809 transitions. [2019-10-13 19:37:51,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 19:37:51,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2019-10-13 19:37:51,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:51,159 INFO L225 Difference]: With dead ends: 2807 [2019-10-13 19:37:51,159 INFO L226 Difference]: Without dead ends: 2008 [2019-10-13 19:37:51,163 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-10-13 19:37:51,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2019-10-13 19:37:51,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1651. [2019-10-13 19:37:51,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1651 states. [2019-10-13 19:37:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2005 transitions. [2019-10-13 19:37:51,429 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2005 transitions. Word has length 104 [2019-10-13 19:37:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:51,429 INFO L462 AbstractCegarLoop]: Abstraction has 1651 states and 2005 transitions. [2019-10-13 19:37:51,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2005 transitions. [2019-10-13 19:37:51,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 19:37:51,433 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:51,433 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:51,433 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:51,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:51,434 INFO L82 PathProgramCache]: Analyzing trace with hash 672707866, now seen corresponding path program 1 times [2019-10-13 19:37:51,434 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:51,434 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699177825] [2019-10-13 19:37:51,434 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:51,435 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:51,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,726 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:37:52,028 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699177825] [2019-10-13 19:37:52,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793096780] [2019-10-13 19:37:52,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:37:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 19:37:52,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:37:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:52,480 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:37:52,480 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2019-10-13 19:37:52,480 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632786726] [2019-10-13 19:37:52,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:52,481 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:52,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:52,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-10-13 19:37:52,482 INFO L87 Difference]: Start difference. First operand 1651 states and 2005 transitions. Second operand 8 states. [2019-10-13 19:37:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:53,318 INFO L93 Difference]: Finished difference Result 3204 states and 3910 transitions. [2019-10-13 19:37:53,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:37:53,319 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-10-13 19:37:53,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:53,330 INFO L225 Difference]: With dead ends: 3204 [2019-10-13 19:37:53,330 INFO L226 Difference]: Without dead ends: 1581 [2019-10-13 19:37:53,337 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-10-13 19:37:53,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2019-10-13 19:37:53,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2019-10-13 19:37:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2019-10-13 19:37:53,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 1881 transitions. [2019-10-13 19:37:53,694 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 1881 transitions. Word has length 108 [2019-10-13 19:37:53,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:53,695 INFO L462 AbstractCegarLoop]: Abstraction has 1581 states and 1881 transitions. [2019-10-13 19:37:53,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:53,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 1881 transitions. [2019-10-13 19:37:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 19:37:53,700 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:53,701 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:53,907 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:37:53,908 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:53,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:53,908 INFO L82 PathProgramCache]: Analyzing trace with hash 19459107, now seen corresponding path program 1 times [2019-10-13 19:37:53,908 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:53,909 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463657318] [2019-10-13 19:37:53,909 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:53,909 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:53,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY