/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:02:56,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:02:56,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:02:56,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:02:56,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:02:56,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:02:56,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:02:56,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:02:56,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:02:56,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:02:56,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:02:56,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:02:56,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:02:56,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:02:56,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:02:56,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:02:56,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:02:56,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:02:56,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:02:56,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:02:56,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:02:56,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:02:56,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:02:56,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:02:56,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:02:56,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:02:56,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:02:56,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:02:56,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:02:56,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:02:56,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:02:56,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:02:56,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:02:56,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:02:56,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:02:56,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:02:56,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:02:56,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:02:56,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:02:56,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:02:56,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:02:56,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:02:56,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:02:56,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:02:56,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:02:56,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:02:56,225 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:02:56,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:02:56,226 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:02:56,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:02:56,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:02:56,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:02:56,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:02:56,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:02:56,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:02:56,229 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:02:56,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:02:56,229 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:02:56,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:02:56,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:02:56,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:02:56,230 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:02:56,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:02:56,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:02:56,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:02:56,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:02:56,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:02:56,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:02:56,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:02:56,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:02:56,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:02:56,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:02:56,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:02:56,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:02:56,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:02:56,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:02:56,729 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:02:56,731 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-09-21 10:02:56,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/100690350/4aff7a2f5c474431aec9132ccdc63877/FLAGc787c20d1 [2020-09-21 10:02:57,426 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:02:57,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-09-21 10:02:57,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/100690350/4aff7a2f5c474431aec9132ccdc63877/FLAGc787c20d1 [2020-09-21 10:02:57,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/100690350/4aff7a2f5c474431aec9132ccdc63877 [2020-09-21 10:02:57,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:02:57,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:02:57,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:02:57,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:02:57,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:02:57,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:02:57" (1/1) ... [2020-09-21 10:02:57,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:57, skipping insertion in model container [2020-09-21 10:02:57,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:02:57" (1/1) ... [2020-09-21 10:02:57,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:02:57,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:02:58,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:02:58,316 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:02:58,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:02:58,455 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:02:58,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:58 WrapperNode [2020-09-21 10:02:58,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:02:58,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:02:58,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:02:58,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:02:58,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:58" (1/1) ... [2020-09-21 10:02:58,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:58" (1/1) ... [2020-09-21 10:02:58,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:58" (1/1) ... [2020-09-21 10:02:58,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:58" (1/1) ... [2020-09-21 10:02:58,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:58" (1/1) ... [2020-09-21 10:02:58,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:58" (1/1) ... [2020-09-21 10:02:58,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:58" (1/1) ... [2020-09-21 10:02:58,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:02:58,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:02:58,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:02:58,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:02:58,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:02:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:02:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:02:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:02:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:02:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:02:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 10:02:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 10:02:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:02:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 10:02:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:02:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:02:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:02:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:02:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:02:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:02:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 10:02:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 10:02:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:02:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:02:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:02:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:02:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:02:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:02:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:02:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:02:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:02:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:02:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:02:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:02:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:02:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:02:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:02:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:02:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:02:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:02:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:02:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:02:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:02:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:02:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:02:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 10:02:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 10:02:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:02:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:02:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:02:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:02:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:02:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:02:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:02:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:02:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 10:02:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:02:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:02:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:02:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:02:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:02:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 10:02:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 10:02:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:02:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:02:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:02:58,671 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 10:02:58,671 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 10:02:58,671 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 10:02:58,671 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:02:58,671 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 10:02:58,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:02:58,671 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:02:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:02:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:02:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:02:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:02:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:02:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:02:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:02:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:02:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:02:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:02:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:02:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:02:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:02:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:02:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:02:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:02:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:02:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:02:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:02:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:02:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:02:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:02:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:02:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:02:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:02:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:02:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:02:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:02:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:02:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:02:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:02:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:02:59,791 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:02:59,792 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:02:59,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:02:59 BoogieIcfgContainer [2020-09-21 10:02:59,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:02:59,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:02:59,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:02:59,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:02:59,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:02:57" (1/3) ... [2020-09-21 10:02:59,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57efbb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:02:59, skipping insertion in model container [2020-09-21 10:02:59,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:58" (2/3) ... [2020-09-21 10:02:59,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57efbb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:02:59, skipping insertion in model container [2020-09-21 10:02:59,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:02:59" (3/3) ... [2020-09-21 10:02:59,807 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product62.cil.c [2020-09-21 10:02:59,819 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:02:59,830 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:02:59,853 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:02:59,881 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:02:59,881 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:02:59,881 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:02:59,882 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:02:59,882 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:02:59,882 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:02:59,882 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:02:59,882 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:02:59,909 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-09-21 10:02:59,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 10:02:59,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:59,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:59,923 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:59,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:59,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1419538001, now seen corresponding path program 1 times [2020-09-21 10:02:59,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:59,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55162551] [2020-09-21 10:02:59,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:03:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:00,708 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:03:00,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:03:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:00,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:03:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:00,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:03:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:00,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:00,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:03:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:00,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:03:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:00,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:03:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:03:00,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55162551] [2020-09-21 10:03:00,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:03:00,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:03:00,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213850315] [2020-09-21 10:03:00,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:03:00,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:03:00,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:03:00,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:03:00,904 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 3 states. [2020-09-21 10:03:02,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:03:02,240 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2020-09-21 10:03:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:03:02,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 10:03:02,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:03:02,261 INFO L225 Difference]: With dead ends: 354 [2020-09-21 10:03:02,261 INFO L226 Difference]: Without dead ends: 191 [2020-09-21 10:03:02,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:03:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-09-21 10:03:02,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 154. [2020-09-21 10:03:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-21 10:03:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2020-09-21 10:03:02,401 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 46 [2020-09-21 10:03:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:03:02,402 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2020-09-21 10:03:02,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:03:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2020-09-21 10:03:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 10:03:02,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:03:02,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:03:02,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:03:02,414 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:03:02,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:03:02,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1353902391, now seen corresponding path program 1 times [2020-09-21 10:03:02,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:03:02,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838389797] [2020-09-21 10:03:02,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:03:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:02,841 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:03:02,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:03:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:03:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:02,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:03:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:02,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:02,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:03:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:02,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:03:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:02,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:03:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:03:02,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838389797] [2020-09-21 10:03:02,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:03:02,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:03:02,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224376926] [2020-09-21 10:03:02,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:03:02,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:03:02,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:03:02,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:03:02,927 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand 4 states. [2020-09-21 10:03:03,349 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:03:04,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:03:04,496 INFO L93 Difference]: Finished difference Result 283 states and 348 transitions. [2020-09-21 10:03:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:03:04,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 10:03:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:03:04,507 INFO L225 Difference]: With dead ends: 283 [2020-09-21 10:03:04,507 INFO L226 Difference]: Without dead ends: 175 [2020-09-21 10:03:04,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:03:04,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-21 10:03:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-09-21 10:03:04,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-09-21 10:03:04,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2020-09-21 10:03:04,575 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 47 [2020-09-21 10:03:04,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:03:04,576 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2020-09-21 10:03:04,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:03:04,576 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2020-09-21 10:03:04,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:03:04,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:03:04,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:03:04,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:03:04,579 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:03:04,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:03:04,579 INFO L82 PathProgramCache]: Analyzing trace with hash -480372053, now seen corresponding path program 1 times [2020-09-21 10:03:04,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:03:04,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034164007] [2020-09-21 10:03:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:03:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:04,975 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:03:04,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:03:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:05,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:03:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:05,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:03:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:05,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:05,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:03:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:05,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:03:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:05,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:03:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:03:05,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034164007] [2020-09-21 10:03:05,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:03:05,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:03:05,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563097650] [2020-09-21 10:03:05,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:03:05,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:03:05,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:03:05,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:03:05,089 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand 8 states. [2020-09-21 10:03:05,572 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:05,913 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:06,243 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:06,550 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:08,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:03:08,195 INFO L93 Difference]: Finished difference Result 296 states and 366 transitions. [2020-09-21 10:03:08,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:03:08,196 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-09-21 10:03:08,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:03:08,199 INFO L225 Difference]: With dead ends: 296 [2020-09-21 10:03:08,200 INFO L226 Difference]: Without dead ends: 175 [2020-09-21 10:03:08,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:03:08,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-21 10:03:08,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-09-21 10:03:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-09-21 10:03:08,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2020-09-21 10:03:08,259 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 52 [2020-09-21 10:03:08,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:03:08,260 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2020-09-21 10:03:08,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:03:08,260 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2020-09-21 10:03:08,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-21 10:03:08,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:03:08,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:03:08,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:03:08,263 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:03:08,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:03:08,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1922469070, now seen corresponding path program 1 times [2020-09-21 10:03:08,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:03:08,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100070321] [2020-09-21 10:03:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:03:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:08,640 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:03:08,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:03:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:08,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:03:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:08,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:03:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:08,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:08,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:03:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:08,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:03:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:08,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:08,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:08,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:08,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-21 10:03:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:08,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-21 10:03:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:03:08,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100070321] [2020-09-21 10:03:08,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:03:08,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:03:08,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612057777] [2020-09-21 10:03:08,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:03:08,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:03:08,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:03:08,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:03:08,774 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand 6 states. [2020-09-21 10:03:09,162 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:10,595 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:03:11,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:03:11,673 INFO L93 Difference]: Finished difference Result 404 states and 500 transitions. [2020-09-21 10:03:11,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:03:11,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-09-21 10:03:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:03:11,677 INFO L225 Difference]: With dead ends: 404 [2020-09-21 10:03:11,677 INFO L226 Difference]: Without dead ends: 283 [2020-09-21 10:03:11,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:03:11,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-09-21 10:03:11,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 240. [2020-09-21 10:03:11,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-09-21 10:03:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2020-09-21 10:03:11,734 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 70 [2020-09-21 10:03:11,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:03:11,735 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2020-09-21 10:03:11,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:03:11,735 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2020-09-21 10:03:11,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 10:03:11,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:03:11,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:03:11,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:03:11,737 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:03:11,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:03:11,738 INFO L82 PathProgramCache]: Analyzing trace with hash 371744810, now seen corresponding path program 1 times [2020-09-21 10:03:11,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:03:11,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392664550] [2020-09-21 10:03:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:03:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:12,154 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:03:12,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:03:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:12,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:03:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:12,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:03:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:12,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:12,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:03:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:12,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:03:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:12,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:12,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:12,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:12,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:12,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:03:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:12,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 10:03:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:12,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 10:03:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:03:12,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392664550] [2020-09-21 10:03:12,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:03:12,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:03:12,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063223809] [2020-09-21 10:03:12,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:03:12,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:03:12,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:03:12,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:03:12,316 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand 8 states. [2020-09-21 10:03:12,761 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:13,996 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:14,424 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:15,200 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:15,470 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:15,822 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:03:17,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:03:17,248 INFO L93 Difference]: Finished difference Result 718 states and 872 transitions. [2020-09-21 10:03:17,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:03:17,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-09-21 10:03:17,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:03:17,254 INFO L225 Difference]: With dead ends: 718 [2020-09-21 10:03:17,254 INFO L226 Difference]: Without dead ends: 502 [2020-09-21 10:03:17,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:03:17,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-09-21 10:03:17,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 435. [2020-09-21 10:03:17,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-09-21 10:03:17,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 494 transitions. [2020-09-21 10:03:17,349 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 494 transitions. Word has length 84 [2020-09-21 10:03:17,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:03:17,349 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 494 transitions. [2020-09-21 10:03:17,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:03:17,350 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 494 transitions. [2020-09-21 10:03:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 10:03:17,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:03:17,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:03:17,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:03:17,352 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:03:17,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:03:17,353 INFO L82 PathProgramCache]: Analyzing trace with hash 861472934, now seen corresponding path program 1 times [2020-09-21 10:03:17,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:03:17,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477559658] [2020-09-21 10:03:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:03:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,696 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:03:17,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:03:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:03:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:03:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:03:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:03:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:03:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:03:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-21 10:03:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 10:03:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:03:17,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477559658] [2020-09-21 10:03:17,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:03:17,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:03:17,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410067426] [2020-09-21 10:03:17,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:03:17,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:03:17,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:03:17,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:03:17,876 INFO L87 Difference]: Start difference. First operand 435 states and 494 transitions. Second operand 9 states. [2020-09-21 10:03:18,294 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:19,681 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:20,018 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:03:21,315 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:21,654 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:21,945 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:03:22,351 INFO L93 Difference]: Finished difference Result 544 states and 674 transitions. [2020-09-21 10:03:22,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 10:03:22,351 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-09-21 10:03:22,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:03:22,357 INFO L225 Difference]: With dead ends: 544 [2020-09-21 10:03:22,357 INFO L226 Difference]: Without dead ends: 541 [2020-09-21 10:03:22,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 10:03:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-09-21 10:03:22,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 435. [2020-09-21 10:03:22,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-09-21 10:03:22,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 493 transitions. [2020-09-21 10:03:22,451 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 493 transitions. Word has length 88 [2020-09-21 10:03:22,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:03:22,452 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 493 transitions. [2020-09-21 10:03:22,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:03:22,452 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 493 transitions. [2020-09-21 10:03:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-21 10:03:22,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:03:22,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:03:22,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:03:22,455 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:03:22,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:03:22,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1149093276, now seen corresponding path program 1 times [2020-09-21 10:03:22,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:03:22,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938561762] [2020-09-21 10:03:22,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:03:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:22,811 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:03:22,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:03:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:22,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:03:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:22,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:03:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:22,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:22,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:03:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:22,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:03:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:22,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:03:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:22,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:22,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:22,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:23,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:23,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:03:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:23,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:23,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:23,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:23,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-21 10:03:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:23,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-21 10:03:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:03:23,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938561762] [2020-09-21 10:03:23,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:03:23,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:03:23,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060552367] [2020-09-21 10:03:23,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:03:23,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:03:23,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:03:23,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:03:23,076 INFO L87 Difference]: Start difference. First operand 435 states and 493 transitions. Second operand 9 states. [2020-09-21 10:03:24,228 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:24,516 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:03:24,833 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:03:25,146 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:03:26,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:03:26,561 INFO L93 Difference]: Finished difference Result 960 states and 1180 transitions. [2020-09-21 10:03:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:03:26,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-09-21 10:03:26,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:03:26,565 INFO L225 Difference]: With dead ends: 960 [2020-09-21 10:03:26,565 INFO L226 Difference]: Without dead ends: 549 [2020-09-21 10:03:26,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:03:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-09-21 10:03:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 445. [2020-09-21 10:03:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-09-21 10:03:26,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 503 transitions. [2020-09-21 10:03:26,650 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 503 transitions. Word has length 104 [2020-09-21 10:03:26,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:03:26,651 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 503 transitions. [2020-09-21 10:03:26,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:03:26,651 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 503 transitions. [2020-09-21 10:03:26,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-21 10:03:26,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:03:26,653 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:03:26,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:03:26,654 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:03:26,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:03:26,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1502181658, now seen corresponding path program 1 times [2020-09-21 10:03:26,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:03:26,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279234924] [2020-09-21 10:03:26,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:03:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:26,967 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:03:26,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:03:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:26,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:03:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:03:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:03:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:03:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:03:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:03:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-21 10:03:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-21 10:03:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:27,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:03:27,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279234924] [2020-09-21 10:03:27,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:03:27,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 10:03:27,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871800810] [2020-09-21 10:03:27,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 10:03:27,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:03:27,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 10:03:27,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:03:27,181 INFO L87 Difference]: Start difference. First operand 445 states and 503 transitions. Second operand 11 states. [2020-09-21 10:03:27,974 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:03:28,234 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:03:28,578 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:03:29,301 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:03:29,619 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:03:29,924 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:03:31,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:03:31,480 INFO L93 Difference]: Finished difference Result 980 states and 1202 transitions. [2020-09-21 10:03:31,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:03:31,480 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-09-21 10:03:31,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:03:31,485 INFO L225 Difference]: With dead ends: 980 [2020-09-21 10:03:31,486 INFO L226 Difference]: Without dead ends: 559 [2020-09-21 10:03:31,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:03:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-21 10:03:31,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 453. [2020-09-21 10:03:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-09-21 10:03:31,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 511 transitions. [2020-09-21 10:03:31,572 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 511 transitions. Word has length 104 [2020-09-21 10:03:31,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:03:31,572 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 511 transitions. [2020-09-21 10:03:31,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 10:03:31,572 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 511 transitions. [2020-09-21 10:03:31,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-21 10:03:31,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:03:31,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:03:31,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:03:31,577 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:03:31,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:03:31,577 INFO L82 PathProgramCache]: Analyzing trace with hash -368991065, now seen corresponding path program 1 times [2020-09-21 10:03:31,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:03:31,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690805587] [2020-09-21 10:03:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:03:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:31,923 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:03:31,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:03:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:31,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:03:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:31,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:03:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:31,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:31,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:03:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:31,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:03:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:31,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:03:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:32,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:32,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:32,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:32,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:03:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:32,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:32,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:32,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-21 10:03:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:32,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-21 10:03:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:03:32,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690805587] [2020-09-21 10:03:32,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:03:32,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:03:32,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123568768] [2020-09-21 10:03:32,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:03:32,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:03:32,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:03:32,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:03:32,118 INFO L87 Difference]: Start difference. First operand 453 states and 511 transitions. Second operand 7 states. [2020-09-21 10:03:32,604 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:33,374 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:36,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:03:36,288 INFO L93 Difference]: Finished difference Result 1342 states and 1702 transitions. [2020-09-21 10:03:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:03:36,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-09-21 10:03:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:03:36,295 INFO L225 Difference]: With dead ends: 1342 [2020-09-21 10:03:36,295 INFO L226 Difference]: Without dead ends: 913 [2020-09-21 10:03:36,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:03:36,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-09-21 10:03:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 793. [2020-09-21 10:03:36,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-09-21 10:03:36,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 929 transitions. [2020-09-21 10:03:36,433 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 929 transitions. Word has length 104 [2020-09-21 10:03:36,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:03:36,434 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 929 transitions. [2020-09-21 10:03:36,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:03:36,435 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 929 transitions. [2020-09-21 10:03:36,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-21 10:03:36,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:03:36,437 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:03:36,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:03:36,438 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:03:36,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:03:36,438 INFO L82 PathProgramCache]: Analyzing trace with hash 38573473, now seen corresponding path program 1 times [2020-09-21 10:03:36,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:03:36,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913961411] [2020-09-21 10:03:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:03:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:36,751 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:03:36,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:03:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:36,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:03:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:36,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:03:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:36,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:36,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:03:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:36,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:03:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:36,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:03:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:36,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:03:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:36,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:36,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:37,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:37,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:37,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:03:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:37,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:37,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:37,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-21 10:03:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:37,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-21 10:03:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:03:37,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913961411] [2020-09-21 10:03:37,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:03:37,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-21 10:03:37,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843193516] [2020-09-21 10:03:37,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-21 10:03:37,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:03:37,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-21 10:03:37,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-09-21 10:03:37,266 INFO L87 Difference]: Start difference. First operand 793 states and 929 transitions. Second operand 17 states. [2020-09-21 10:03:37,933 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:38,329 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:38,682 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:38,990 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:39,763 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:41,019 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:41,453 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:41,800 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:42,138 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:42,541 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:42,875 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:43,524 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-09-21 10:03:44,218 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-09-21 10:03:47,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:03:47,320 INFO L93 Difference]: Finished difference Result 1649 states and 2014 transitions. [2020-09-21 10:03:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-21 10:03:47,321 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 108 [2020-09-21 10:03:47,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:03:47,327 INFO L225 Difference]: With dead ends: 1649 [2020-09-21 10:03:47,328 INFO L226 Difference]: Without dead ends: 880 [2020-09-21 10:03:47,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2020-09-21 10:03:47,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-09-21 10:03:47,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 763. [2020-09-21 10:03:47,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-09-21 10:03:47,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 880 transitions. [2020-09-21 10:03:47,516 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 880 transitions. Word has length 108 [2020-09-21 10:03:47,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:03:47,517 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 880 transitions. [2020-09-21 10:03:47,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-21 10:03:47,518 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 880 transitions. [2020-09-21 10:03:47,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-21 10:03:47,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:03:47,523 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:03:47,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:03:47,524 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:03:47,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:03:47,525 INFO L82 PathProgramCache]: Analyzing trace with hash 118260142, now seen corresponding path program 1 times [2020-09-21 10:03:47,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:03:47,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786378370] [2020-09-21 10:03:47,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:03:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:47,880 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:03:47,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:03:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:47,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:03:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:47,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:03:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:47,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:47,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:03:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:03:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:47,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:03:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:47,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:47,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:47,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:03:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:03:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:03:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-21 10:03:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-21 10:03:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-21 10:03:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 10:03:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:03:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:03:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:03:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-21 10:03:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-21 10:03:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:03:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-21 10:03:48,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786378370] [2020-09-21 10:03:48,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:03:48,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-21 10:03:48,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733216008] [2020-09-21 10:03:48,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-21 10:03:48,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:03:48,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-21 10:03:48,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:03:48,251 INFO L87 Difference]: Start difference. First operand 763 states and 880 transitions. Second operand 18 states. [2020-09-21 10:03:48,827 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:49,258 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:49,586 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:49,911 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:50,760 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:52,162 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:52,580 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:52,936 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:53,281 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:53,709 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:54,059 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188