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_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:36:11,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:36:11,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:36:11,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:36:11,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:36:11,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:36:11,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:36:11,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:36:11,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:36:11,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:36:11,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:36:11,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:36:11,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:36:11,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:36:11,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:36:11,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:36:11,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:36:11,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:36:11,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:36:11,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:36:11,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:36:11,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:36:11,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:36:11,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:36:11,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:36:11,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:36:11,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:36:11,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:36:11,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:36:11,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:36:11,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:36:11,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:36:11,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:36:11,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:36:11,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:36:11,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:36:11,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:36:11,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:36:11,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:36:11,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:36:11,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:36:11,806 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 [2019-10-14 23:36:11,842 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:36:11,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:36:11,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:36:11,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:36:11,846 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:36:11,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:36:11,847 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:36:11,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:36:11,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:36:11,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:36:11,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:36:11,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:36:11,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:36:11,848 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:36:11,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:36:11,848 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:36:11,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:36:11,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:36:11,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:36:11,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:36:11,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:36:11,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:11,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:36:11,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:36:11,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:36:11,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:36:11,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:36:11,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:36:11,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:36:12,153 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:36:12,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:36:12,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:36:12,174 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:36:12,174 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:36:12,175 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product57.cil.c [2019-10-14 23:36:12,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc1f3610/1d718fe0013f4b47aaa25a0b69c90c5e/FLAG807cea88e [2019-10-14 23:36:12,777 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:36:12,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product57.cil.c [2019-10-14 23:36:12,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc1f3610/1d718fe0013f4b47aaa25a0b69c90c5e/FLAG807cea88e [2019-10-14 23:36:13,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc1f3610/1d718fe0013f4b47aaa25a0b69c90c5e [2019-10-14 23:36:13,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:36:13,073 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:36:13,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:13,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:36:13,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:36:13,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5370fc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13, skipping insertion in model container [2019-10-14 23:36:13,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,090 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:36:13,139 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:36:13,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:13,619 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:36:13,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:13,784 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:36:13,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13 WrapperNode [2019-10-14 23:36:13,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:13,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:36:13,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:36:13,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:36:13,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:36:13,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:36:13,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:36:13,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:36:13,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (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 [2019-10-14 23:36:13,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:36:13,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:36:13,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:13,984 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:36:13,984 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:36:13,986 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:36:13,986 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:36:13,986 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:36:13,986 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:36:13,986 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:36:13,986 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:36:13,987 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:36:13,988 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:36:13,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:36:13,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:36:13,990 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:36:13,993 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:36:13,993 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:36:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:36:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:36:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:36:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:36:13,995 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:36:13,995 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:36:13,995 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:13,995 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:36:13,995 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:36:13,996 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:36:13,996 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:36:13,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:36:13,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:36:13,996 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:36:13,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:36:13,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:36:13,997 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:36:13,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:13,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:13,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:13,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:36:13,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:36:13,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:36:13,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:36:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:36:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:36:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:36:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:36:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:36:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:36:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:36:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:36:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:36:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:36:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:36:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:36:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:36:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:36:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:36:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:36:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:36:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:36:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:36:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:36:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:36:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:36:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:36:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:36:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:36:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:36:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:36:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:36:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:36:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:36:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:36:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:36:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:36:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:36:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:36:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:36:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:36:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:36:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:36:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:36:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:36:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:36:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:36:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:36:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:36:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:36:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:36:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:36:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:36:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:36:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:36:15,163 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:36:15,164 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:36:15,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:15 BoogieIcfgContainer [2019-10-14 23:36:15,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:36:15,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:36:15,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:36:15,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:36:15,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:36:13" (1/3) ... [2019-10-14 23:36:15,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9a7f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:15, skipping insertion in model container [2019-10-14 23:36:15,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (2/3) ... [2019-10-14 23:36:15,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9a7f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:15, skipping insertion in model container [2019-10-14 23:36:15,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:15" (3/3) ... [2019-10-14 23:36:15,176 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product57.cil.c [2019-10-14 23:36:15,185 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:36:15,194 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:36:15,206 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:36:15,247 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:36:15,247 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:36:15,247 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:36:15,248 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:36:15,248 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:36:15,248 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:36:15,249 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:36:15,249 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:36:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2019-10-14 23:36:15,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:36:15,285 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:15,286 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] [2019-10-14 23:36:15,288 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:15,292 INFO L82 PathProgramCache]: Analyzing trace with hash -2111020078, now seen corresponding path program 1 times [2019-10-14 23:36:15,301 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:15,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391647107] [2019-10-14 23:36:15,302 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:15,302 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:15,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,988 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:16,061 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391647107] [2019-10-14 23:36:16,062 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:16,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:36:16,063 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817660801] [2019-10-14 23:36:16,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:36:16,068 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:16,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:36:16,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:16,087 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 4 states. [2019-10-14 23:36:17,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:17,326 INFO L93 Difference]: Finished difference Result 322 states and 415 transitions. [2019-10-14 23:36:17,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:36:17,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-14 23:36:17,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:17,344 INFO L225 Difference]: With dead ends: 322 [2019-10-14 23:36:17,344 INFO L226 Difference]: Without dead ends: 178 [2019-10-14 23:36:17,351 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 [2019-10-14 23:36:17,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-10-14 23:36:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 145. [2019-10-14 23:36:17,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-10-14 23:36:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2019-10-14 23:36:17,489 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 51 [2019-10-14 23:36:17,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:17,490 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2019-10-14 23:36:17,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:36:17,491 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2019-10-14 23:36:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:36:17,501 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:17,502 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] [2019-10-14 23:36:17,502 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:17,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:17,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1832052429, now seen corresponding path program 1 times [2019-10-14 23:36:17,503 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:17,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060901203] [2019-10-14 23:36:17,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:17,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:17,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:17,931 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:18,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:18,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060901203] [2019-10-14 23:36:18,020 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:18,020 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:36:18,020 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217803638] [2019-10-14 23:36:18,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:36:18,030 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:18,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:36:18,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:36:18,036 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand 5 states. [2019-10-14 23:36:18,629 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:19,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:19,728 INFO L93 Difference]: Finished difference Result 267 states and 326 transitions. [2019-10-14 23:36:19,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:36:19,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-14 23:36:19,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:19,732 INFO L225 Difference]: With dead ends: 267 [2019-10-14 23:36:19,733 INFO L226 Difference]: Without dead ends: 168 [2019-10-14 23:36:19,734 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 [2019-10-14 23:36:19,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-14 23:36:19,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 136. [2019-10-14 23:36:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-10-14 23:36:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2019-10-14 23:36:19,772 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 52 [2019-10-14 23:36:19,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:19,772 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2019-10-14 23:36:19,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:36:19,773 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2019-10-14 23:36:19,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 23:36:19,775 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:19,775 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] [2019-10-14 23:36:19,775 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:19,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:19,776 INFO L82 PathProgramCache]: Analyzing trace with hash -761941703, now seen corresponding path program 1 times [2019-10-14 23:36:19,776 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:19,776 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012795176] [2019-10-14 23:36:19,776 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:19,777 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:19,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,185 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:20,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012795176] [2019-10-14 23:36:20,323 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:20,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:36:20,324 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602926981] [2019-10-14 23:36:20,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:36:20,325 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:20,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:36:20,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:36:20,326 INFO L87 Difference]: Start difference. First operand 136 states and 158 transitions. Second operand 9 states. [2019-10-14 23:36:20,789 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:21,165 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:36:21,480 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:21,753 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:23,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:23,272 INFO L93 Difference]: Finished difference Result 276 states and 341 transitions. [2019-10-14 23:36:23,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:36:23,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2019-10-14 23:36:23,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:23,276 INFO L225 Difference]: With dead ends: 276 [2019-10-14 23:36:23,277 INFO L226 Difference]: Without dead ends: 168 [2019-10-14 23:36:23,278 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:36:23,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-14 23:36:23,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 136. [2019-10-14 23:36:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-10-14 23:36:23,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 157 transitions. [2019-10-14 23:36:23,317 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 157 transitions. Word has length 56 [2019-10-14 23:36:23,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:23,317 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 157 transitions. [2019-10-14 23:36:23,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:36:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 157 transitions. [2019-10-14 23:36:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-14 23:36:23,319 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:23,319 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, 1, 1, 1] [2019-10-14 23:36:23,319 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:23,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:23,320 INFO L82 PathProgramCache]: Analyzing trace with hash -505794736, now seen corresponding path program 1 times [2019-10-14 23:36:23,320 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:23,320 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997251909] [2019-10-14 23:36:23,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:23,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:23,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,707 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:23,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997251909] [2019-10-14 23:36:23,807 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:23,807 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:36:23,807 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876955717] [2019-10-14 23:36:23,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:36:23,808 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:23,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:36:23,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:36:23,809 INFO L87 Difference]: Start difference. First operand 136 states and 157 transitions. Second operand 7 states. [2019-10-14 23:36:24,295 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:25,566 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:26,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:26,342 INFO L93 Difference]: Finished difference Result 370 states and 463 transitions. [2019-10-14 23:36:26,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:36:26,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2019-10-14 23:36:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:26,346 INFO L225 Difference]: With dead ends: 370 [2019-10-14 23:36:26,346 INFO L226 Difference]: Without dead ends: 262 [2019-10-14 23:36:26,348 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:36:26,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2019-10-14 23:36:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 216. [2019-10-14 23:36:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2019-10-14 23:36:26,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 248 transitions. [2019-10-14 23:36:26,408 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 248 transitions. Word has length 69 [2019-10-14 23:36:26,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:26,409 INFO L462 AbstractCegarLoop]: Abstraction has 216 states and 248 transitions. [2019-10-14 23:36:26,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:36:26,409 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 248 transitions. [2019-10-14 23:36:26,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-14 23:36:26,412 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:26,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:26,413 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:26,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:26,413 INFO L82 PathProgramCache]: Analyzing trace with hash -210026842, now seen corresponding path program 1 times [2019-10-14 23:36:26,413 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:26,414 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25242492] [2019-10-14 23:36:26,414 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:26,414 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:26,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,774 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:26,918 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25242492] [2019-10-14 23:36:26,918 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:26,918 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:36:26,919 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397220065] [2019-10-14 23:36:26,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:36:26,919 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:26,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:36:26,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:36:26,920 INFO L87 Difference]: Start difference. First operand 216 states and 248 transitions. Second operand 9 states. [2019-10-14 23:36:27,324 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:28,435 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:28,832 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:29,421 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:29,681 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:30,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:30,846 INFO L93 Difference]: Finished difference Result 639 states and 800 transitions. [2019-10-14 23:36:30,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:36:30,854 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2019-10-14 23:36:30,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:30,860 INFO L225 Difference]: With dead ends: 639 [2019-10-14 23:36:30,860 INFO L226 Difference]: Without dead ends: 451 [2019-10-14 23:36:30,862 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:36:30,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2019-10-14 23:36:30,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 380. [2019-10-14 23:36:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2019-10-14 23:36:30,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 436 transitions. [2019-10-14 23:36:30,942 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 436 transitions. Word has length 83 [2019-10-14 23:36:30,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:30,943 INFO L462 AbstractCegarLoop]: Abstraction has 380 states and 436 transitions. [2019-10-14 23:36:30,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:36:30,943 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 436 transitions. [2019-10-14 23:36:30,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-14 23:36:30,945 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:30,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:30,945 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:30,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:30,946 INFO L82 PathProgramCache]: Analyzing trace with hash -910798134, now seen corresponding path program 1 times [2019-10-14 23:36:30,946 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:30,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846991664] [2019-10-14 23:36:30,946 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:30,947 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:30,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,217 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:31,381 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846991664] [2019-10-14 23:36:31,381 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:31,381 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:31,381 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826853561] [2019-10-14 23:36:31,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:31,382 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:31,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:31,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:31,383 INFO L87 Difference]: Start difference. First operand 380 states and 436 transitions. Second operand 10 states. [2019-10-14 23:36:32,121 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:33,458 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:34,755 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:35,023 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:35,299 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:35,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:35,596 INFO L93 Difference]: Finished difference Result 838 states and 1031 transitions. [2019-10-14 23:36:35,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-14 23:36:35,598 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2019-10-14 23:36:35,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:35,603 INFO L225 Difference]: With dead ends: 838 [2019-10-14 23:36:35,603 INFO L226 Difference]: Without dead ends: 486 [2019-10-14 23:36:35,604 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:36:35,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2019-10-14 23:36:35,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 379. [2019-10-14 23:36:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2019-10-14 23:36:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 433 transitions. [2019-10-14 23:36:35,685 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 433 transitions. Word has length 87 [2019-10-14 23:36:35,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:35,685 INFO L462 AbstractCegarLoop]: Abstraction has 379 states and 433 transitions. [2019-10-14 23:36:35,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:35,686 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 433 transitions. [2019-10-14 23:36:35,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-14 23:36:35,687 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:35,688 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] [2019-10-14 23:36:35,688 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:35,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:35,688 INFO L82 PathProgramCache]: Analyzing trace with hash -777270984, now seen corresponding path program 1 times [2019-10-14 23:36:35,688 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:35,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003145931] [2019-10-14 23:36:35,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:35,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:35,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,964 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:36,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003145931] [2019-10-14 23:36:36,111 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:36,112 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:36,112 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114362106] [2019-10-14 23:36:36,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:36,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:36,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:36,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:36,113 INFO L87 Difference]: Start difference. First operand 379 states and 433 transitions. Second operand 10 states. [2019-10-14 23:36:37,282 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:37,557 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:36:37,825 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:38,082 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:39,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:39,243 INFO L93 Difference]: Finished difference Result 845 states and 1060 transitions. [2019-10-14 23:36:39,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:39,243 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2019-10-14 23:36:39,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:39,247 INFO L225 Difference]: With dead ends: 845 [2019-10-14 23:36:39,247 INFO L226 Difference]: Without dead ends: 494 [2019-10-14 23:36:39,249 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 [2019-10-14 23:36:39,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2019-10-14 23:36:39,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 389. [2019-10-14 23:36:39,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2019-10-14 23:36:39,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 443 transitions. [2019-10-14 23:36:39,319 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 443 transitions. Word has length 103 [2019-10-14 23:36:39,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:39,319 INFO L462 AbstractCegarLoop]: Abstraction has 389 states and 443 transitions. [2019-10-14 23:36:39,320 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:39,320 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 443 transitions. [2019-10-14 23:36:39,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-14 23:36:39,321 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:39,321 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] [2019-10-14 23:36:39,322 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:39,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:39,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1151001718, now seen corresponding path program 1 times [2019-10-14 23:36:39,322 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:39,323 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768835391] [2019-10-14 23:36:39,323 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:39,323 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:39,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,598 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:39,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768835391] [2019-10-14 23:36:39,743 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:39,743 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:36:39,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543443011] [2019-10-14 23:36:39,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:36:39,748 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:39,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:36:39,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:36:39,749 INFO L87 Difference]: Start difference. First operand 389 states and 443 transitions. Second operand 12 states. [2019-10-14 23:36:40,600 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:40,883 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:41,137 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:41,843 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:42,127 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:42,390 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:43,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:43,866 INFO L93 Difference]: Finished difference Result 865 states and 1082 transitions. [2019-10-14 23:36:43,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:36:43,869 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2019-10-14 23:36:43,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:43,873 INFO L225 Difference]: With dead ends: 865 [2019-10-14 23:36:43,873 INFO L226 Difference]: Without dead ends: 504 [2019-10-14 23:36:43,875 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 [2019-10-14 23:36:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2019-10-14 23:36:43,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 397. [2019-10-14 23:36:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2019-10-14 23:36:43,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 451 transitions. [2019-10-14 23:36:43,934 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 451 transitions. Word has length 103 [2019-10-14 23:36:43,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:43,935 INFO L462 AbstractCegarLoop]: Abstraction has 397 states and 451 transitions. [2019-10-14 23:36:43,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:36:43,935 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 451 transitions. [2019-10-14 23:36:43,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-14 23:36:43,936 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:43,937 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] [2019-10-14 23:36:43,937 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:43,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:43,937 INFO L82 PathProgramCache]: Analyzing trace with hash 910461589, now seen corresponding path program 1 times [2019-10-14 23:36:43,938 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:43,938 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805699669] [2019-10-14 23:36:43,938 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:43,938 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:43,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,212 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:44,376 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805699669] [2019-10-14 23:36:44,376 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:44,376 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:44,377 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775789679] [2019-10-14 23:36:44,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:44,378 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:44,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:44,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:44,379 INFO L87 Difference]: Start difference. First operand 397 states and 451 transitions. Second operand 8 states. [2019-10-14 23:36:44,922 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:45,482 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:47,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:47,744 INFO L93 Difference]: Finished difference Result 1184 states and 1533 transitions. [2019-10-14 23:36:47,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:36:47,745 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-10-14 23:36:47,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:47,752 INFO L225 Difference]: With dead ends: 1184 [2019-10-14 23:36:47,752 INFO L226 Difference]: Without dead ends: 815 [2019-10-14 23:36:47,754 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:36:47,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2019-10-14 23:36:47,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 683. [2019-10-14 23:36:47,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2019-10-14 23:36:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 805 transitions. [2019-10-14 23:36:47,867 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 805 transitions. Word has length 103 [2019-10-14 23:36:47,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:47,868 INFO L462 AbstractCegarLoop]: Abstraction has 683 states and 805 transitions. [2019-10-14 23:36:47,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:47,868 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 805 transitions. [2019-10-14 23:36:47,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-14 23:36:47,870 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:47,870 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] [2019-10-14 23:36:47,871 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:47,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:47,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1450576315, now seen corresponding path program 1 times [2019-10-14 23:36:47,871 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:47,871 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129547097] [2019-10-14 23:36:47,872 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:47,872 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:47,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,139 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:36:48,391 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129547097] [2019-10-14 23:36:48,391 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040109243] [2019-10-14 23:36:48,391 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 [2019-10-14 23:36:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:36:48,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:36:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:48,816 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:36:48,816 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2019-10-14 23:36:48,816 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875503576] [2019-10-14 23:36:48,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:48,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:48,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:48,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:36:48,819 INFO L87 Difference]: Start difference. First operand 683 states and 805 transitions. Second operand 8 states. [2019-10-14 23:36:49,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:49,588 INFO L93 Difference]: Finished difference Result 1303 states and 1546 transitions. [2019-10-14 23:36:49,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:36:49,588 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-10-14 23:36:49,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:49,592 INFO L225 Difference]: With dead ends: 1303 [2019-10-14 23:36:49,593 INFO L226 Difference]: Without dead ends: 648 [2019-10-14 23:36:49,595 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:36:49,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2019-10-14 23:36:49,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2019-10-14 23:36:49,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-10-14 23:36:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 749 transitions. [2019-10-14 23:36:49,725 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 749 transitions. Word has length 107 [2019-10-14 23:36:49,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:49,726 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 749 transitions. [2019-10-14 23:36:49,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:49,726 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 749 transitions. [2019-10-14 23:36:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-14 23:36:49,729 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:49,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:49,938 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:36:49,939 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:49,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:49,940 INFO L82 PathProgramCache]: Analyzing trace with hash 675241674, now seen corresponding path program 1 times [2019-10-14 23:36:49,940 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:49,940 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814714741] [2019-10-14 23:36:49,941 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:49,941 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:49,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,284 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:36:50,436 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814714741] [2019-10-14 23:36:50,436 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374390293] [2019-10-14 23:36:50,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:36:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-14 23:36:50,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:36:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:50,833 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:36:50,834 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2019-10-14 23:36:50,834 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674899893] [2019-10-14 23:36:50,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:36:50,835 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:50,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:36:50,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:36:50,836 INFO L87 Difference]: Start difference. First operand 648 states and 749 transitions. Second operand 9 states.