/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:07:43,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:07:43,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:07:43,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:07:43,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:07:43,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:07:43,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:07:43,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:07:43,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:07:43,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:07:43,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:07:43,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:07:43,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:07:43,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:07:43,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:07:43,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:07:43,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:07:43,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:07:43,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:07:43,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:07:43,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:07:43,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:07:43,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:07:43,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:07:43,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:07:43,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:07:43,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:07:43,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:07:43,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:07:43,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:07:43,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:07:43,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:07:43,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:07:43,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:07:43,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:07:43,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:07:43,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:07:43,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:07:43,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:07:43,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:07:43,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:07:43,686 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 [2019-11-06 22:07:43,719 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:07:43,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:07:43,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:07:43,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:07:43,721 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:07:43,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:07:43,725 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:07:43,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:07:43,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:07:43,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:07:43,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:07:43,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:07:43,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:07:43,726 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:07:43,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:07:43,726 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:07:43,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:07:43,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:07:43,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:07:43,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:07:43,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:07:43,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:07:43,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:07:43,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:07:43,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:07:43,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:07:43,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:07:43,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:07:43,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:07:44,022 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:07:44,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:07:44,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:07:44,039 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:07:44,039 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:07:44,040 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2019-11-06 22:07:44,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc727634f/1fbe7948a2184317973b01faac9ae0a9/FLAG6c9e9785d [2019-11-06 22:07:44,662 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:07:44,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2019-11-06 22:07:44,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc727634f/1fbe7948a2184317973b01faac9ae0a9/FLAG6c9e9785d [2019-11-06 22:07:44,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc727634f/1fbe7948a2184317973b01faac9ae0a9 [2019-11-06 22:07:44,966 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:07:44,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:07:44,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:07:44,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:07:44,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:07:44,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:44" (1/1) ... [2019-11-06 22:07:44,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bcb6351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:44, skipping insertion in model container [2019-11-06 22:07:44,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:44" (1/1) ... [2019-11-06 22:07:44,984 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:07:45,049 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:07:45,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:07:45,526 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:07:45,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:07:45,698 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:07:45,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:45 WrapperNode [2019-11-06 22:07:45,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:07:45,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:07:45,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:07:45,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:07:45,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:45" (1/1) ... [2019-11-06 22:07:45,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:45" (1/1) ... [2019-11-06 22:07:45,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:45" (1/1) ... [2019-11-06 22:07:45,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:45" (1/1) ... [2019-11-06 22:07:45,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:45" (1/1) ... [2019-11-06 22:07:45,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:45" (1/1) ... [2019-11-06 22:07:45,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:45" (1/1) ... [2019-11-06 22:07:45,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:07:45,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:07:45,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:07:45,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:07:45,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:45" (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 [2019-11-06 22:07:45,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:07:45,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:07:45,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:07:45,871 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:07:45,871 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:07:45,872 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:07:45,872 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:07:45,872 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:07:45,872 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:07:45,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:07:45,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:07:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:07:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:07:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:07:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:07:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:07:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:07:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:07:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:07:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:07:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:07:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:07:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:07:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:07:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:07:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:07:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:07:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:07:45,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:07:45,876 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:07:45,876 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:07:45,876 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:07:45,876 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:07:45,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:07:45,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:07:45,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:07:45,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:07:45,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:07:45,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:07:45,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-11-06 22:07:45,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-11-06 22:07:45,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-11-06 22:07:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:07:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:07:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:07:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:07:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:07:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:07:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:07:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:07:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:07:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:07:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:07:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:07:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:07:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-11-06 22:07:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-11-06 22:07:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:07:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:07:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:07:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:07:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:07:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:07:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:07:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:07:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:07:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:07:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:07:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:07:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:07:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:07:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:07:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-11-06 22:07:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:07:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:07:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:07:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:07:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:07:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:07:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:07:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:07:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:07:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:07:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:07:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:07:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:07:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:07:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:07:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:07:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:07:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:07:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:07:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:07:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:07:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:07:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:07:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:07:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:07:47,055 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:07:47,056 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:07:47,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:47 BoogieIcfgContainer [2019-11-06 22:07:47,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:07:47,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:07:47,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:07:47,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:07:47,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:07:44" (1/3) ... [2019-11-06 22:07:47,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1608f7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:47, skipping insertion in model container [2019-11-06 22:07:47,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:45" (2/3) ... [2019-11-06 22:07:47,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1608f7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:47, skipping insertion in model container [2019-11-06 22:07:47,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:47" (3/3) ... [2019-11-06 22:07:47,068 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product49.cil.c [2019-11-06 22:07:47,079 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:07:47,088 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:07:47,101 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:07:47,139 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:07:47,139 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:07:47,139 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:07:47,139 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:07:47,140 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:07:47,140 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:07:47,140 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:07:47,141 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:07:47,170 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2019-11-06 22:07:47,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-06 22:07:47,183 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:47,184 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:07:47,185 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:47,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:47,190 INFO L82 PathProgramCache]: Analyzing trace with hash 464701397, now seen corresponding path program 1 times [2019-11-06 22:07:47,199 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:47,199 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509815176] [2019-11-06 22:07:47,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,864 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:07:48,011 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509815176] [2019-11-06 22:07:48,013 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:48,013 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:07:48,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271765197] [2019-11-06 22:07:48,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:07:48,021 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:48,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:07:48,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:07:48,039 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2019-11-06 22:07:49,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:07:49,072 INFO L93 Difference]: Finished difference Result 303 states and 389 transitions. [2019-11-06 22:07:49,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:07:49,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-11-06 22:07:49,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:07:49,090 INFO L225 Difference]: With dead ends: 303 [2019-11-06 22:07:49,090 INFO L226 Difference]: Without dead ends: 166 [2019-11-06 22:07:49,095 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:07:49,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-11-06 22:07:49,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2019-11-06 22:07:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-11-06 22:07:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2019-11-06 22:07:49,182 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 59 [2019-11-06 22:07:49,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:07:49,182 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2019-11-06 22:07:49,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:07:49,183 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2019-11-06 22:07:49,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-06 22:07:49,187 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:49,187 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:07:49,187 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:49,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:49,188 INFO L82 PathProgramCache]: Analyzing trace with hash -103265726, now seen corresponding path program 1 times [2019-11-06 22:07:49,188 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:49,188 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558385739] [2019-11-06 22:07:49,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:49,536 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:49,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:07:49,599 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558385739] [2019-11-06 22:07:49,600 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:49,600 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:07:49,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222144104] [2019-11-06 22:07:49,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:07:49,602 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:49,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:07:49,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:07:49,603 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 5 states. [2019-11-06 22:07:50,062 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:07:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:07:50,789 INFO L93 Difference]: Finished difference Result 248 states and 301 transitions. [2019-11-06 22:07:50,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:07:50,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-11-06 22:07:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:07:50,793 INFO L225 Difference]: With dead ends: 248 [2019-11-06 22:07:50,793 INFO L226 Difference]: Without dead ends: 156 [2019-11-06 22:07:50,795 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:07:50,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-11-06 22:07:50,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2019-11-06 22:07:50,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-11-06 22:07:50,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2019-11-06 22:07:50,842 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 60 [2019-11-06 22:07:50,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:07:50,843 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2019-11-06 22:07:50,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:07:50,843 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2019-11-06 22:07:50,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-06 22:07:50,848 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:50,848 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:07:50,848 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:50,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:50,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1838047012, now seen corresponding path program 1 times [2019-11-06 22:07:50,849 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:50,849 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290018987] [2019-11-06 22:07:50,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:51,260 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:07:51,366 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290018987] [2019-11-06 22:07:51,366 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:51,366 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:07:51,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443416351] [2019-11-06 22:07:51,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:07:51,368 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:51,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:07:51,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:07:51,369 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 5 states. [2019-11-06 22:07:51,706 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:07:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:07:52,565 INFO L93 Difference]: Finished difference Result 257 states and 316 transitions. [2019-11-06 22:07:52,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:07:52,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-11-06 22:07:52,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:07:52,569 INFO L225 Difference]: With dead ends: 257 [2019-11-06 22:07:52,569 INFO L226 Difference]: Without dead ends: 156 [2019-11-06 22:07:52,570 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:07:52,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-11-06 22:07:52,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2019-11-06 22:07:52,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-11-06 22:07:52,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2019-11-06 22:07:52,602 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 64 [2019-11-06 22:07:52,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:07:52,603 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2019-11-06 22:07:52,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:07:52,603 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2019-11-06 22:07:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-06 22:07:52,605 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:52,605 INFO L410 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] [2019-11-06 22:07:52,605 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:52,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:52,606 INFO L82 PathProgramCache]: Analyzing trace with hash -745886990, now seen corresponding path program 1 times [2019-11-06 22:07:52,606 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:52,606 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156457855] [2019-11-06 22:07:52,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:52,919 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:07:53,024 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156457855] [2019-11-06 22:07:53,024 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:53,025 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 22:07:53,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384384922] [2019-11-06 22:07:53,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:07:53,026 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:53,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:07:53,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:07:53,026 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 7 states. [2019-11-06 22:07:53,457 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:07:54,929 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:07:55,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:07:55,482 INFO L93 Difference]: Finished difference Result 356 states and 444 transitions. [2019-11-06 22:07:55,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 22:07:55,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2019-11-06 22:07:55,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:07:55,487 INFO L225 Difference]: With dead ends: 356 [2019-11-06 22:07:55,487 INFO L226 Difference]: Without dead ends: 255 [2019-11-06 22:07:55,489 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-11-06 22:07:55,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2019-11-06 22:07:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 212. [2019-11-06 22:07:55,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-11-06 22:07:55,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 244 transitions. [2019-11-06 22:07:55,536 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 244 transitions. Word has length 77 [2019-11-06 22:07:55,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:07:55,537 INFO L462 AbstractCegarLoop]: Abstraction has 212 states and 244 transitions. [2019-11-06 22:07:55,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:07:55,537 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 244 transitions. [2019-11-06 22:07:55,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-06 22:07:55,539 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:55,539 INFO L410 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] [2019-11-06 22:07:55,539 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:55,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:55,539 INFO L82 PathProgramCache]: Analyzing trace with hash -47194942, now seen corresponding path program 1 times [2019-11-06 22:07:55,540 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:55,540 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213431036] [2019-11-06 22:07:55,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,942 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:07:56,070 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213431036] [2019-11-06 22:07:56,070 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:56,070 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:07:56,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122740666] [2019-11-06 22:07:56,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:07:56,072 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:56,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:07:56,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:07:56,074 INFO L87 Difference]: Start difference. First operand 212 states and 244 transitions. Second operand 9 states. [2019-11-06 22:07:56,534 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:07:57,237 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:58,062 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:07:58,428 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:07:58,896 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:59,184 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:59,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:07:59,786 INFO L93 Difference]: Finished difference Result 438 states and 534 transitions. [2019-11-06 22:07:59,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:07:59,792 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2019-11-06 22:07:59,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:07:59,795 INFO L225 Difference]: With dead ends: 438 [2019-11-06 22:07:59,795 INFO L226 Difference]: Without dead ends: 254 [2019-11-06 22:07:59,796 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:07:59,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2019-11-06 22:07:59,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 211. [2019-11-06 22:07:59,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2019-11-06 22:07:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 241 transitions. [2019-11-06 22:07:59,841 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 241 transitions. Word has length 91 [2019-11-06 22:07:59,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:07:59,842 INFO L462 AbstractCegarLoop]: Abstraction has 211 states and 241 transitions. [2019-11-06 22:07:59,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:07:59,842 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 241 transitions. [2019-11-06 22:07:59,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-06 22:07:59,844 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:59,844 INFO L410 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] [2019-11-06 22:07:59,844 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:59,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:59,844 INFO L82 PathProgramCache]: Analyzing trace with hash -238329201, now seen corresponding path program 1 times [2019-11-06 22:07:59,845 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:59,845 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705168982] [2019-11-06 22:07:59,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,095 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:08:00,268 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705168982] [2019-11-06 22:08:00,268 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:00,269 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:08:00,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320523531] [2019-11-06 22:08:00,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:08:00,269 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:00,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:08:00,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:08:00,270 INFO L87 Difference]: Start difference. First operand 211 states and 241 transitions. Second operand 9 states. [2019-11-06 22:08:01,491 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:01,754 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 22:08:02,015 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:02,285 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:03,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:03,092 INFO L93 Difference]: Finished difference Result 436 states and 528 transitions. [2019-11-06 22:08:03,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:08:03,093 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2019-11-06 22:08:03,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:03,095 INFO L225 Difference]: With dead ends: 436 [2019-11-06 22:08:03,095 INFO L226 Difference]: Without dead ends: 253 [2019-11-06 22:08:03,096 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:08:03,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2019-11-06 22:08:03,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 216. [2019-11-06 22:08:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2019-11-06 22:08:03,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2019-11-06 22:08:03,136 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 92 [2019-11-06 22:08:03,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:03,137 INFO L462 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2019-11-06 22:08:03,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:08:03,137 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2019-11-06 22:08:03,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-06 22:08:03,138 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:03,138 INFO L410 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] [2019-11-06 22:08:03,138 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:03,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:03,139 INFO L82 PathProgramCache]: Analyzing trace with hash 463270673, now seen corresponding path program 1 times [2019-11-06 22:08:03,139 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:03,139 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076273093] [2019-11-06 22:08:03,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,428 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:08:03,558 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076273093] [2019-11-06 22:08:03,559 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:03,559 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 22:08:03,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401694839] [2019-11-06 22:08:03,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 22:08:03,560 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:03,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 22:08:03,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:08:03,560 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand 11 states. [2019-11-06 22:08:04,173 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:04,447 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:04,744 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:05,513 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:05,799 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:06,067 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:07,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:07,006 INFO L93 Difference]: Finished difference Result 448 states and 548 transitions. [2019-11-06 22:08:07,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 22:08:07,008 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2019-11-06 22:08:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:07,011 INFO L225 Difference]: With dead ends: 448 [2019-11-06 22:08:07,011 INFO L226 Difference]: Without dead ends: 260 [2019-11-06 22:08:07,012 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-11-06 22:08:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2019-11-06 22:08:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 220. [2019-11-06 22:08:07,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2019-11-06 22:08:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 250 transitions. [2019-11-06 22:08:07,050 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 250 transitions. Word has length 92 [2019-11-06 22:08:07,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:07,051 INFO L462 AbstractCegarLoop]: Abstraction has 220 states and 250 transitions. [2019-11-06 22:08:07,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 22:08:07,051 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 250 transitions. [2019-11-06 22:08:07,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-06 22:08:07,052 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:07,052 INFO L410 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] [2019-11-06 22:08:07,052 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:07,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:07,053 INFO L82 PathProgramCache]: Analyzing trace with hash -2106215726, now seen corresponding path program 1 times [2019-11-06 22:08:07,053 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:07,053 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132601577] [2019-11-06 22:08:07,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,322 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:08:07,449 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132601577] [2019-11-06 22:08:07,449 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:07,449 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 22:08:07,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175596065] [2019-11-06 22:08:07,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:08:07,451 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:07,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:08:07,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:08:07,456 INFO L87 Difference]: Start difference. First operand 220 states and 250 transitions. Second operand 7 states. [2019-11-06 22:08:07,816 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:08,363 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:10,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:10,184 INFO L93 Difference]: Finished difference Result 617 states and 772 transitions. [2019-11-06 22:08:10,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 22:08:10,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2019-11-06 22:08:10,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:10,189 INFO L225 Difference]: With dead ends: 617 [2019-11-06 22:08:10,189 INFO L226 Difference]: Without dead ends: 425 [2019-11-06 22:08:10,190 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:08:10,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2019-11-06 22:08:10,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 387. [2019-11-06 22:08:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2019-11-06 22:08:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 454 transitions. [2019-11-06 22:08:10,249 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 454 transitions. Word has length 92 [2019-11-06 22:08:10,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:10,249 INFO L462 AbstractCegarLoop]: Abstraction has 387 states and 454 transitions. [2019-11-06 22:08:10,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:08:10,250 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 454 transitions. [2019-11-06 22:08:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-06 22:08:10,251 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:10,251 INFO L410 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] [2019-11-06 22:08:10,252 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:10,252 INFO L82 PathProgramCache]: Analyzing trace with hash -302189332, now seen corresponding path program 1 times [2019-11-06 22:08:10,252 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:10,252 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577813910] [2019-11-06 22:08:10,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,654 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:08:10,874 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577813910] [2019-11-06 22:08:10,874 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:10,874 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:08:10,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85945864] [2019-11-06 22:08:10,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:08:10,875 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:10,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:08:10,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:08:10,876 INFO L87 Difference]: Start difference. First operand 387 states and 454 transitions. Second operand 12 states. [2019-11-06 22:08:11,630 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:12,308 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:13,405 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:13,755 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:14,011 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-11-06 22:08:14,284 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:14,580 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:15,848 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:16,136 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:16,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:16,813 INFO L93 Difference]: Finished difference Result 1065 states and 1331 transitions. [2019-11-06 22:08:16,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-06 22:08:16,815 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2019-11-06 22:08:16,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:16,820 INFO L225 Difference]: With dead ends: 1065 [2019-11-06 22:08:16,820 INFO L226 Difference]: Without dead ends: 776 [2019-11-06 22:08:16,822 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2019-11-06 22:08:16,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2019-11-06 22:08:16,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 666. [2019-11-06 22:08:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2019-11-06 22:08:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 774 transitions. [2019-11-06 22:08:16,970 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 774 transitions. Word has length 96 [2019-11-06 22:08:16,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:16,974 INFO L462 AbstractCegarLoop]: Abstraction has 666 states and 774 transitions. [2019-11-06 22:08:16,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:08:16,974 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 774 transitions. [2019-11-06 22:08:16,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-06 22:08:16,979 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:16,980 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 22:08:16,980 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:16,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:16,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1029431621, now seen corresponding path program 1 times [2019-11-06 22:08:16,981 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:16,981 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531199098] [2019-11-06 22:08:16,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,339 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-06 22:08:17,605 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531199098] [2019-11-06 22:08:17,605 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911357795] [2019-11-06 22:08:17,605 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 [2019-11-06 22:08:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-06 22:08:17,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:08:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:08:18,055 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:08:18,056 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 20 [2019-11-06 22:08:18,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895382220] [2019-11-06 22:08:18,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-06 22:08:18,057 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:18,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-06 22:08:18,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:08:18,057 INFO L87 Difference]: Start difference. First operand 666 states and 774 transitions. Second operand 20 states. [2019-11-06 22:08:18,637 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-11-06 22:08:19,030 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-11-06 22:08:19,309 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-11-06 22:08:19,596 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-11-06 22:08:20,340 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:20,641 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:21,586 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:21,977 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 22:08:23,078 WARN L191 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 191 [2019-11-06 22:08:23,373 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 22:08:23,920 WARN L191 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 191