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_spec5_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:41:32,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:41:32,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:41:32,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:41:32,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:41:32,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:41:32,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:41:32,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:41:32,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:41:32,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:41:32,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:41:32,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:41:32,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:41:32,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:41:32,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:41:32,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:41:32,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:41:32,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:41:32,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:41:32,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:41:32,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:41:32,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:41:32,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:41:32,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:41:32,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:41:32,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:41:32,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:41:32,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:41:32,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:41:32,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:41:32,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:41:32,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:41:32,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:41:32,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:41:32,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:41:32,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:41:32,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:41:32,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:41:32,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:41:32,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:41:32,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:41:32,641 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 19:41:32,655 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:41:32,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:41:32,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:41:32,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:41:32,657 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:41:32,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:41:32,657 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:41:32,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:41:32,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:41:32,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:41:32,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:41:32,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:41:32,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:41:32,658 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:41:32,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:41:32,659 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:41:32,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:41:32,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:41:32,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:41:32,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:41:32,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:41:32,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:41:32,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:41:32,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:41:32,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:41:32,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:41:32,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:41:32,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:41:32,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:41:32,978 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:41:32,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:41:33,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:41:33,002 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:41:33,002 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:41:33,003 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2019-10-13 19:41:33,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2b3e5d3a/6932f503783244a08bda5a80b8558c54/FLAGafcc8844c [2019-10-13 19:41:33,623 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:41:33,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2019-10-13 19:41:33,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2b3e5d3a/6932f503783244a08bda5a80b8558c54/FLAGafcc8844c [2019-10-13 19:41:33,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2b3e5d3a/6932f503783244a08bda5a80b8558c54 [2019-10-13 19:41:33,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:41:33,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:41:33,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:41:33,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:41:33,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:41:33,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:41:33" (1/1) ... [2019-10-13 19:41:33,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc976e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:33, skipping insertion in model container [2019-10-13 19:41:33,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:41:33" (1/1) ... [2019-10-13 19:41:33,974 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:41:34,030 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:41:34,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:41:34,513 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:41:34,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:41:34,662 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:41:34,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:34 WrapperNode [2019-10-13 19:41:34,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:41:34,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:41:34,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:41:34,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:41:34,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:34" (1/1) ... [2019-10-13 19:41:34,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:34" (1/1) ... [2019-10-13 19:41:34,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:34" (1/1) ... [2019-10-13 19:41:34,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:34" (1/1) ... [2019-10-13 19:41:34,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:34" (1/1) ... [2019-10-13 19:41:34,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:34" (1/1) ... [2019-10-13 19:41:34,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:34" (1/1) ... [2019-10-13 19:41:34,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:41:34,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:41:34,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:41:34,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:41:34,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:34" (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 19:41:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:41:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:41:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:41:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:41:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:41:34,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:41:34,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:41:34,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:41:34,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:41:34,808 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:41:34,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:41:34,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:41:34,809 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:41:34,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:41:34,809 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:41:34,809 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:41:34,810 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:41:34,810 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:41:34,810 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-13 19:41:34,810 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:41:34,810 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:41:34,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:41:34,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:41:34,811 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:41:34,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:41:34,811 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:41:34,811 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:41:34,812 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:41:34,812 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:41:34,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:41:34,812 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:41:34,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:41:34,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:41:34,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 19:41:34,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 19:41:34,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 19:41:34,813 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:41:34,813 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:41:34,813 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:41:34,814 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:41:34,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:41:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:41:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:41:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:41:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:41:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:41:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:41:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:41:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:41:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:41:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:41:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:41:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:41:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:41:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:41:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:41:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:41:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:41:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:41:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:41:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:41:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:41:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:41:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:41:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:41:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:41:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:41:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:41:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 19:41:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:41:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:41:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:41:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:41:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:41:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:41:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:41:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:41:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:41:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:41:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:41:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:41:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:41:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:41:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 19:41:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 19:41:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:41:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:41:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:41:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-13 19:41:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:41:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:41:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:41:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:41:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:41:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:41:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:41:35,888 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:41:35,889 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:41:35,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:41:35 BoogieIcfgContainer [2019-10-13 19:41:35,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:41:35,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:41:35,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:41:35,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:41:35,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:41:33" (1/3) ... [2019-10-13 19:41:35,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a69eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:41:35, skipping insertion in model container [2019-10-13 19:41:35,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:34" (2/3) ... [2019-10-13 19:41:35,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a69eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:41:35, skipping insertion in model container [2019-10-13 19:41:35,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:41:35" (3/3) ... [2019-10-13 19:41:35,899 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product43.cil.c [2019-10-13 19:41:35,910 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:41:35,920 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:41:35,932 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:41:35,967 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:41:35,967 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:41:35,968 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:41:35,968 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:41:35,968 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:41:35,968 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:41:35,968 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:41:35,968 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:41:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2019-10-13 19:41:36,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-13 19:41:36,001 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:36,002 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] [2019-10-13 19:41:36,004 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:36,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:36,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1951083148, now seen corresponding path program 1 times [2019-10-13 19:41:36,019 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:36,020 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171046618] [2019-10-13 19:41:36,020 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:36,020 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:36,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:36,748 WARN L191 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:36,851 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 19:41:36,852 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171046618] [2019-10-13 19:41:36,853 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:36,854 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:41:36,854 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244515968] [2019-10-13 19:41:36,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:41:36,861 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:36,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:41:36,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:41:36,878 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2019-10-13 19:41:38,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:38,006 INFO L93 Difference]: Finished difference Result 308 states and 391 transitions. [2019-10-13 19:41:38,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:41:38,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-10-13 19:41:38,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:38,026 INFO L225 Difference]: With dead ends: 308 [2019-10-13 19:41:38,026 INFO L226 Difference]: Without dead ends: 170 [2019-10-13 19:41:38,033 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 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 19:41:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-10-13 19:41:38,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 139. [2019-10-13 19:41:38,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-13 19:41:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2019-10-13 19:41:38,128 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 59 [2019-10-13 19:41:38,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:38,129 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2019-10-13 19:41:38,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:41:38,130 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2019-10-13 19:41:38,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 19:41:38,139 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:38,140 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] [2019-10-13 19:41:38,140 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:38,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:38,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1220523940, now seen corresponding path program 1 times [2019-10-13 19:41:38,141 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:38,142 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723640777] [2019-10-13 19:41:38,142 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:38,142 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:38,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:38,517 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:38,583 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 19:41:38,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723640777] [2019-10-13 19:41:38,584 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:38,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:41:38,584 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455410351] [2019-10-13 19:41:38,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:41:38,601 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:38,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:41:38,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:41:38,602 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand 5 states. [2019-10-13 19:41:39,147 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:40,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:40,088 INFO L93 Difference]: Finished difference Result 244 states and 293 transitions. [2019-10-13 19:41:40,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:41:40,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-10-13 19:41:40,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:40,098 INFO L225 Difference]: With dead ends: 244 [2019-10-13 19:41:40,098 INFO L226 Difference]: Without dead ends: 160 [2019-10-13 19:41:40,100 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:41:40,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-10-13 19:41:40,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 130. [2019-10-13 19:41:40,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-13 19:41:40,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2019-10-13 19:41:40,136 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 60 [2019-10-13 19:41:40,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:40,136 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2019-10-13 19:41:40,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:41:40,137 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2019-10-13 19:41:40,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-13 19:41:40,139 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:40,139 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] [2019-10-13 19:41:40,139 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:40,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:40,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1125066517, now seen corresponding path program 1 times [2019-10-13 19:41:40,140 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:40,140 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097397866] [2019-10-13 19:41:40,140 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:40,140 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:40,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:40,522 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:40,706 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 19:41:40,707 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097397866] [2019-10-13 19:41:40,707 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:40,708 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:41:40,708 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166529957] [2019-10-13 19:41:40,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:41:40,709 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:40,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:41:40,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:41:40,709 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2019-10-13 19:41:41,214 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:41,568 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:41:41,864 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:42,141 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:43,154 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:44,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:44,909 INFO L93 Difference]: Finished difference Result 435 states and 529 transitions. [2019-10-13 19:41:44,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:41:44,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2019-10-13 19:41:44,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:44,916 INFO L225 Difference]: With dead ends: 435 [2019-10-13 19:41:44,916 INFO L226 Difference]: Without dead ends: 333 [2019-10-13 19:41:44,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:41:44,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2019-10-13 19:41:44,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 268. [2019-10-13 19:41:44,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-10-13 19:41:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 318 transitions. [2019-10-13 19:41:44,986 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 318 transitions. Word has length 64 [2019-10-13 19:41:44,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:44,987 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 318 transitions. [2019-10-13 19:41:44,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:41:44,987 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 318 transitions. [2019-10-13 19:41:44,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 19:41:44,990 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:44,990 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] [2019-10-13 19:41:44,990 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:44,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:44,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1836372268, now seen corresponding path program 1 times [2019-10-13 19:41:44,991 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:44,991 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947542814] [2019-10-13 19:41:44,991 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:44,992 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:44,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,314 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:41:45,416 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947542814] [2019-10-13 19:41:45,416 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:45,416 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:41:45,416 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105861663] [2019-10-13 19:41:45,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:41:45,417 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:45,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:41:45,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:41:45,418 INFO L87 Difference]: Start difference. First operand 268 states and 318 transitions. Second operand 9 states. [2019-10-13 19:41:45,908 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:46,735 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:47,757 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:48,079 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:48,410 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:48,718 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:49,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:49,237 INFO L93 Difference]: Finished difference Result 679 states and 862 transitions. [2019-10-13 19:41:49,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:41:49,238 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2019-10-13 19:41:49,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:49,243 INFO L225 Difference]: With dead ends: 679 [2019-10-13 19:41:49,244 INFO L226 Difference]: Without dead ends: 439 [2019-10-13 19:41:49,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:41:49,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2019-10-13 19:41:49,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 379. [2019-10-13 19:41:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2019-10-13 19:41:49,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 451 transitions. [2019-10-13 19:41:49,318 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 451 transitions. Word has length 70 [2019-10-13 19:41:49,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:49,319 INFO L462 AbstractCegarLoop]: Abstraction has 379 states and 451 transitions. [2019-10-13 19:41:49,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:41:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 451 transitions. [2019-10-13 19:41:49,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-13 19:41:49,322 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:49,322 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] [2019-10-13 19:41:49,322 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:49,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:49,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1329110427, now seen corresponding path program 1 times [2019-10-13 19:41:49,323 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:49,323 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367448555] [2019-10-13 19:41:49,323 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:49,323 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:49,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,685 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,863 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 19:41:49,863 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367448555] [2019-10-13 19:41:49,863 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:49,864 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:41:49,864 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946525125] [2019-10-13 19:41:49,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:41:49,865 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:49,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:41:49,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:41:49,865 INFO L87 Difference]: Start difference. First operand 379 states and 451 transitions. Second operand 9 states. [2019-10-13 19:41:50,294 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:51,334 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:51,642 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-13 19:41:51,937 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:52,238 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:53,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:53,640 INFO L93 Difference]: Finished difference Result 1185 states and 1563 transitions. [2019-10-13 19:41:53,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:41:53,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2019-10-13 19:41:53,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:53,647 INFO L225 Difference]: With dead ends: 1185 [2019-10-13 19:41:53,648 INFO L226 Difference]: Without dead ends: 834 [2019-10-13 19:41:53,650 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:41:53,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2019-10-13 19:41:53,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 717. [2019-10-13 19:41:53,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-10-13 19:41:53,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 858 transitions. [2019-10-13 19:41:53,774 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 858 transitions. Word has length 102 [2019-10-13 19:41:53,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:53,775 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 858 transitions. [2019-10-13 19:41:53,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:41:53,776 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 858 transitions. [2019-10-13 19:41:53,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-13 19:41:53,779 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:53,785 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] [2019-10-13 19:41:53,786 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:53,786 INFO L82 PathProgramCache]: Analyzing trace with hash 359529404, now seen corresponding path program 1 times [2019-10-13 19:41:53,786 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:53,786 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849526866] [2019-10-13 19:41:53,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:53,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:53,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,089 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:54,227 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 19:41:54,228 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849526866] [2019-10-13 19:41:54,228 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:54,228 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:41:54,228 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706151688] [2019-10-13 19:41:54,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:41:54,229 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:54,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:41:54,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:41:54,230 INFO L87 Difference]: Start difference. First operand 717 states and 858 transitions. Second operand 9 states. [2019-10-13 19:41:55,285 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:55,575 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:41:55,883 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:56,165 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:56,925 INFO L93 Difference]: Finished difference Result 1536 states and 1964 transitions. [2019-10-13 19:41:56,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:41:56,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2019-10-13 19:41:56,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:56,932 INFO L225 Difference]: With dead ends: 1536 [2019-10-13 19:41:56,932 INFO L226 Difference]: Without dead ends: 847 [2019-10-13 19:41:56,934 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:41:56,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2019-10-13 19:41:57,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 737. [2019-10-13 19:41:57,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2019-10-13 19:41:57,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 878 transitions. [2019-10-13 19:41:57,101 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 878 transitions. Word has length 102 [2019-10-13 19:41:57,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:57,104 INFO L462 AbstractCegarLoop]: Abstraction has 737 states and 878 transitions. [2019-10-13 19:41:57,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:41:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 878 transitions. [2019-10-13 19:41:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-13 19:41:57,111 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:57,111 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] [2019-10-13 19:41:57,112 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:57,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:57,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1689858438, now seen corresponding path program 1 times [2019-10-13 19:41:57,112 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:57,113 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867076017] [2019-10-13 19:41:57,113 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:57,113 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:57,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,426 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:57,571 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 19:41:57,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867076017] [2019-10-13 19:41:57,573 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:57,573 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:41:57,573 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757899351] [2019-10-13 19:41:57,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:41:57,574 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:57,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:41:57,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:41:57,575 INFO L87 Difference]: Start difference. First operand 737 states and 878 transitions. Second operand 11 states. [2019-10-13 19:41:58,210 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:58,471 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:58,720 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:59,628 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:59,917 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:00,179 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:01,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:01,188 INFO L93 Difference]: Finished difference Result 1360 states and 1702 transitions. [2019-10-13 19:42:01,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:42:01,188 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2019-10-13 19:42:01,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:01,193 INFO L225 Difference]: With dead ends: 1360 [2019-10-13 19:42:01,193 INFO L226 Difference]: Without dead ends: 651 [2019-10-13 19:42:01,196 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:42:01,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-13 19:42:01,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 578. [2019-10-13 19:42:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2019-10-13 19:42:01,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 674 transitions. [2019-10-13 19:42:01,337 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 674 transitions. Word has length 102 [2019-10-13 19:42:01,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:01,337 INFO L462 AbstractCegarLoop]: Abstraction has 578 states and 674 transitions. [2019-10-13 19:42:01,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:42:01,338 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 674 transitions. [2019-10-13 19:42:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-13 19:42:01,341 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:01,341 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] [2019-10-13 19:42:01,342 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:01,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:01,346 INFO L82 PathProgramCache]: Analyzing trace with hash -764679949, now seen corresponding path program 1 times [2019-10-13 19:42:01,346 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:01,351 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116205694] [2019-10-13 19:42:01,352 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:01,352 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:01,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,746 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:01,926 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 19:42:01,926 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116205694] [2019-10-13 19:42:01,926 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:01,926 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:42:01,927 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624570070] [2019-10-13 19:42:01,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:42:01,928 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:01,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:42:01,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:42:01,929 INFO L87 Difference]: Start difference. First operand 578 states and 674 transitions. Second operand 12 states. [2019-10-13 19:42:02,505 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:03,217 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:03,931 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:04,323 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:04,626 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-13 19:42:04,954 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:05,230 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:06,632 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:06,934 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:07,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:07,536 INFO L93 Difference]: Finished difference Result 1691 states and 2129 transitions. [2019-10-13 19:42:07,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-10-13 19:42:07,540 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 106 [2019-10-13 19:42:07,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:07,548 INFO L225 Difference]: With dead ends: 1691 [2019-10-13 19:42:07,548 INFO L226 Difference]: Without dead ends: 1313 [2019-10-13 19:42:07,551 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 19:42:07,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2019-10-13 19:42:07,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1197. [2019-10-13 19:42:07,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2019-10-13 19:42:07,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1399 transitions. [2019-10-13 19:42:07,702 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1399 transitions. Word has length 106 [2019-10-13 19:42:07,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:07,702 INFO L462 AbstractCegarLoop]: Abstraction has 1197 states and 1399 transitions. [2019-10-13 19:42:07,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:42:07,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1399 transitions. [2019-10-13 19:42:07,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 19:42:07,706 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:07,706 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, 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] [2019-10-13 19:42:07,707 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:07,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:07,707 INFO L82 PathProgramCache]: Analyzing trace with hash -60868023, now seen corresponding path program 1 times [2019-10-13 19:42:07,707 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:07,708 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446004104] [2019-10-13 19:42:07,708 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:07,708 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:07,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:07,999 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 19:42:08,430 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446004104] [2019-10-13 19:42:08,430 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910389837] [2019-10-13 19:42:08,431 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 19:42:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:08,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 19:42:08,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:42:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 25 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:42:08,820 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:42:08,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 20 [2019-10-13 19:42:08,820 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802902874] [2019-10-13 19:42:08,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 19:42:08,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:08,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 19:42:08,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:42:08,824 INFO L87 Difference]: Start difference. First operand 1197 states and 1399 transitions. Second operand 20 states. [2019-10-13 19:42:09,408 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:42:09,800 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-13 19:42:10,096 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:42:10,372 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:42:11,103 WARN L191 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2019-10-13 19:42:11,390 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-13 19:42:11,767 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 193