/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_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:07:42,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:07:42,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:07:42,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:07:42,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:07:42,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:07:42,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:07:42,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:07:42,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:07:42,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:07:42,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:07:42,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:07:42,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:07:42,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:07:42,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:07:42,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:07:42,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:07:42,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:07:42,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:07:42,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:07:42,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:07:42,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:07:42,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:07:42,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:07:42,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:07:42,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:07:42,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:07:42,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:07:42,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:07:42,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:07:42,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:07:42,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:07:42,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:07:42,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:07:42,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:07:42,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:07:42,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:07:42,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:07:42,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:07:42,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:07:42,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:07:42,386 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 10:07:42,412 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:07:42,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:07:42,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:07:42,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:07:42,414 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:07:42,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:07:42,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:07:42,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:07:42,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:07:42,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:07:42,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:07:42,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:07:42,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:07:42,416 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:07:42,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:07:42,416 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:07:42,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:07:42,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:07:42,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:07:42,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:07:42,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:07:42,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:07:42,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:07:42,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:07:42,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:07:42,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:07:42,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:07:42,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:07:42,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:07:42,419 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 10:07:42,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:07:42,901 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:07:42,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:07:42,906 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:07:42,906 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:07:42,908 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-09-21 10:07:43,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75c7d5129/bd7fde412a20432a85027f2f2f356655/FLAG6a2e33f04 [2020-09-21 10:07:43,644 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:07:43,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-09-21 10:07:43,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75c7d5129/bd7fde412a20432a85027f2f2f356655/FLAG6a2e33f04 [2020-09-21 10:07:43,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75c7d5129/bd7fde412a20432a85027f2f2f356655 [2020-09-21 10:07:43,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:07:43,895 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:07:43,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:07:43,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:07:43,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:07:43,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:07:43" (1/1) ... [2020-09-21 10:07:43,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:43, skipping insertion in model container [2020-09-21 10:07:43,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:07:43" (1/1) ... [2020-09-21 10:07:43,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:07:43,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:07:44,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:07:44,382 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:07:44,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:07:44,620 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:07:44,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:44 WrapperNode [2020-09-21 10:07:44,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:07:44,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:07:44,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:07:44,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:07:44,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:44" (1/1) ... [2020-09-21 10:07:44,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:44" (1/1) ... [2020-09-21 10:07:44,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:44" (1/1) ... [2020-09-21 10:07:44,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:44" (1/1) ... [2020-09-21 10:07:44,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:44" (1/1) ... [2020-09-21 10:07:44,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:44" (1/1) ... [2020-09-21 10:07:44,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:44" (1/1) ... [2020-09-21 10:07:44,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:07:44,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:07:44,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:07:44,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:07:44,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:44" (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 10:07:44,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:07:44,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:07:44,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:07:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:07:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:07:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:07:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:07:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:07:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:07:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:07:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:07:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:07:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:07:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:07:44,806 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:07:44,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:07:44,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:07:44,807 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:07:44,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:07:44,807 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 10:07:44,808 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:07:44,808 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:07:44,808 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:07:44,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:07:44,809 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:07:44,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:07:44,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:07:44,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:07:44,810 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:07:44,812 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:07:44,812 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:07:44,812 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:07:44,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:07:44,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:07:44,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:07:44,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:07:44,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:07:44,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:07:44,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 10:07:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:07:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:07:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:07:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:07:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:07:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:07:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:07:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:07:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:07:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:07:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:07:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:07:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:07:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:07:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:07:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:07:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 10:07:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:07:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:07:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:07:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:07:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:07:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:07:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:07:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 10:07:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:07:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:07:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:07:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:07:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:07:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:07:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:07:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:07:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:07:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:07:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:07:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:07:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:07:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:07:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:07:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:07:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:07:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:07:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:07:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:07:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:07:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:07:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:07:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:07:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:07:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:07:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:07:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:07:45,905 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:07:45,906 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:07:45,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:07:45 BoogieIcfgContainer [2020-09-21 10:07:45,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:07:45,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:07:45,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:07:45,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:07:45,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:07:43" (1/3) ... [2020-09-21 10:07:45,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e3a819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:07:45, skipping insertion in model container [2020-09-21 10:07:45,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:44" (2/3) ... [2020-09-21 10:07:45,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e3a819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:07:45, skipping insertion in model container [2020-09-21 10:07:45,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:07:45" (3/3) ... [2020-09-21 10:07:45,921 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-09-21 10:07:45,933 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:07:45,943 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:07:45,966 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:07:45,994 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:07:45,994 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:07:45,995 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:07:45,995 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:07:45,995 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:07:45,995 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:07:45,995 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:07:45,995 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:07:46,020 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-09-21 10:07:46,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:07:46,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:46,034 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 10:07:46,034 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:46,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:46,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2020-09-21 10:07:46,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:46,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118195154] [2020-09-21 10:07:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:46,749 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:46,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:46,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:46,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:46,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:46,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:46,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:07:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:46,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:07:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:46,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:07:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:46,881 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 10:07:46,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118195154] [2020-09-21 10:07:46,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:46,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:07:46,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037542715] [2020-09-21 10:07:46,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:07:46,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:46,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:07:46,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:07:46,926 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-09-21 10:07:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:48,096 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-09-21 10:07:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:07:48,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 10:07:48,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:48,116 INFO L225 Difference]: With dead ends: 296 [2020-09-21 10:07:48,117 INFO L226 Difference]: Without dead ends: 160 [2020-09-21 10:07:48,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:07:48,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-21 10:07:48,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-09-21 10:07:48,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-21 10:07:48,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2020-09-21 10:07:48,215 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2020-09-21 10:07:48,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:48,216 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2020-09-21 10:07:48,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:07:48,216 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2020-09-21 10:07:48,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 10:07:48,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:48,220 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] [2020-09-21 10:07:48,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:07:48,221 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:48,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:48,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2020-09-21 10:07:48,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:48,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004498444] [2020-09-21 10:07:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:48,653 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:48,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:48,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:48,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:48,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:48,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:48,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:07:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:48,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:07:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:48,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:07:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:48,737 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 10:07:48,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004498444] [2020-09-21 10:07:48,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:48,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:07:48,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162669407] [2020-09-21 10:07:48,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:07:48,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:48,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:07:48,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:07:48,743 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2020-09-21 10:07:49,208 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:07:50,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:50,153 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2020-09-21 10:07:50,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:07:50,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 10:07:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:50,157 INFO L225 Difference]: With dead ends: 225 [2020-09-21 10:07:50,158 INFO L226 Difference]: Without dead ends: 144 [2020-09-21 10:07:50,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 10:07:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-21 10:07:50,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-09-21 10:07:50,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-21 10:07:50,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-09-21 10:07:50,196 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2020-09-21 10:07:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:50,197 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-09-21 10:07:50,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:07:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-09-21 10:07:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 10:07:50,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:50,200 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] [2020-09-21 10:07:50,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:07:50,201 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:50,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:50,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2020-09-21 10:07:50,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:50,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133206682] [2020-09-21 10:07:50,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:50,662 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:50,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:50,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:50,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:50,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:50,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:07:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:50,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:07:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:50,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:07:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:50,781 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 10:07:50,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133206682] [2020-09-21 10:07:50,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:50,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:07:50,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032408637] [2020-09-21 10:07:50,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:07:50,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:50,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:07:50,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:07:50,785 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2020-09-21 10:07:51,215 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:51,585 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:51,902 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:52,204 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:53,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:53,509 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-09-21 10:07:53,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:07:53,516 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-09-21 10:07:53,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:53,519 INFO L225 Difference]: With dead ends: 238 [2020-09-21 10:07:53,519 INFO L226 Difference]: Without dead ends: 144 [2020-09-21 10:07:53,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 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 10:07:53,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-21 10:07:53,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-09-21 10:07:53,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-21 10:07:53,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2020-09-21 10:07:53,556 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2020-09-21 10:07:53,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:53,556 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2020-09-21 10:07:53,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:07:53,557 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2020-09-21 10:07:53,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-21 10:07:53,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:53,559 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] [2020-09-21 10:07:53,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:07:53,560 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:53,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:53,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2020-09-21 10:07:53,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:53,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719569693] [2020-09-21 10:07:53,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:53,914 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:53,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:53,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:53,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:53,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:53,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:54,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:07:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:54,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:07:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:54,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-21 10:07:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:54,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-21 10:07:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:54,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-21 10:07:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:54,031 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 10:07:54,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719569693] [2020-09-21 10:07:54,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:54,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:07:54,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331602904] [2020-09-21 10:07:54,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:07:54,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:54,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:07:54,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:07:54,034 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2020-09-21 10:07:54,417 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:55,650 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:07:56,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:56,384 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2020-09-21 10:07:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:07:56,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-09-21 10:07:56,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:56,389 INFO L225 Difference]: With dead ends: 338 [2020-09-21 10:07:56,390 INFO L226 Difference]: Without dead ends: 244 [2020-09-21 10:07:56,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:07:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-09-21 10:07:56,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-09-21 10:07:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-09-21 10:07:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-09-21 10:07:56,441 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2020-09-21 10:07:56,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:56,441 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-09-21 10:07:56,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:07:56,442 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-09-21 10:07:56,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-21 10:07:56,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:56,444 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] [2020-09-21 10:07:56,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:07:56,445 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:56,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:56,445 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2020-09-21 10:07:56,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:56,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589116603] [2020-09-21 10:07:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:56,822 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:56,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:56,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:56,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:56,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:56,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:56,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:07:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:56,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:07:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:56,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:07:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:56,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:07:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:56,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-21 10:07:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:56,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 10:07:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:56,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-21 10:07:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:56,971 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 10:07:56,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589116603] [2020-09-21 10:07:56,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:56,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:07:56,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60662458] [2020-09-21 10:07:56,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:07:56,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:56,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:07:56,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:07:56,978 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2020-09-21 10:07:57,462 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:59,103 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:59,428 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:59,718 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:00,007 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:00,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:00,719 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2020-09-21 10:08:00,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 10:08:00,722 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-09-21 10:08:00,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:00,727 INFO L225 Difference]: With dead ends: 555 [2020-09-21 10:08:00,727 INFO L226 Difference]: Without dead ends: 378 [2020-09-21 10:08:00,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:08:00,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-09-21 10:08:00,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2020-09-21 10:08:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-09-21 10:08:00,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2020-09-21 10:08:00,830 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2020-09-21 10:08:00,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:00,830 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2020-09-21 10:08:00,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:08:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2020-09-21 10:08:00,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 10:08:00,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:00,833 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 10:08:00,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:08:00,833 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:00,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:00,833 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2020-09-21 10:08:00,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:00,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655329887] [2020-09-21 10:08:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:01,214 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:01,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:01,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:01,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:01,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:08:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:01,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:08:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:01,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:01,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:01,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:01,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 10:08:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:01,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 10:08:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 10:08:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:01,369 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 10:08:01,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655329887] [2020-09-21 10:08:01,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:01,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:08:01,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219780031] [2020-09-21 10:08:01,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:08:01,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:01,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:08:01,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:08:01,372 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 9 states. [2020-09-21 10:08:01,775 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:02,339 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:04,149 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:05,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:05,875 INFO L93 Difference]: Finished difference Result 815 states and 1039 transitions. [2020-09-21 10:08:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-21 10:08:05,876 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-09-21 10:08:05,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:05,882 INFO L225 Difference]: With dead ends: 815 [2020-09-21 10:08:05,882 INFO L226 Difference]: Without dead ends: 627 [2020-09-21 10:08:05,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-09-21 10:08:05,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-21 10:08:05,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 556. [2020-09-21 10:08:05,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-09-21 10:08:05,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 666 transitions. [2020-09-21 10:08:05,993 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 666 transitions. Word has length 84 [2020-09-21 10:08:05,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:05,994 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 666 transitions. [2020-09-21 10:08:05,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:08:05,994 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 666 transitions. [2020-09-21 10:08:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 10:08:05,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:05,996 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 10:08:05,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:08:05,996 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:05,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2020-09-21 10:08:05,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:05,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380254002] [2020-09-21 10:08:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:06,312 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:06,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:06,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:06,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:06,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:06,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:08:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:06,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:08:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:06,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:06,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:06,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:06,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 10:08:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:06,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 10:08:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:06,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 10:08:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:06,516 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 10:08:06,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380254002] [2020-09-21 10:08:06,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:06,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:08:06,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800723112] [2020-09-21 10:08:06,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:08:06,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:06,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:08:06,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:08:06,527 INFO L87 Difference]: Start difference. First operand 556 states and 666 transitions. Second operand 8 states. [2020-09-21 10:08:07,421 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:07,716 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:08,018 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:09,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:09,038 INFO L93 Difference]: Finished difference Result 1006 states and 1249 transitions. [2020-09-21 10:08:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:08:09,039 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-09-21 10:08:09,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:09,043 INFO L225 Difference]: With dead ends: 1006 [2020-09-21 10:08:09,044 INFO L226 Difference]: Without dead ends: 601 [2020-09-21 10:08:09,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:08:09,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-09-21 10:08:09,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 556. [2020-09-21 10:08:09,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-09-21 10:08:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 665 transitions. [2020-09-21 10:08:09,146 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 665 transitions. Word has length 84 [2020-09-21 10:08:09,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:09,147 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 665 transitions. [2020-09-21 10:08:09,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:08:09,147 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 665 transitions. [2020-09-21 10:08:09,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 10:08:09,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:09,148 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 10:08:09,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:08:09,149 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:09,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:09,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2020-09-21 10:08:09,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:09,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979588356] [2020-09-21 10:08:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:09,456 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:09,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:09,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:09,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:09,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:09,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:09,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:08:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:09,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:08:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:09,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:09,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:09,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:09,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 10:08:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:09,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 10:08:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:09,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 10:08:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:09,621 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 10:08:09,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979588356] [2020-09-21 10:08:09,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:09,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:08:09,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879065215] [2020-09-21 10:08:09,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:08:09,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:09,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:08:09,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:08:09,626 INFO L87 Difference]: Start difference. First operand 556 states and 665 transitions. Second operand 12 states. [2020-09-21 10:08:10,474 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:10,820 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:11,063 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:11,811 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:12,113 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:08:12,451 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:12,762 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:13,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:13,889 INFO L93 Difference]: Finished difference Result 1144 states and 1416 transitions. [2020-09-21 10:08:13,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 10:08:13,890 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-09-21 10:08:13,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:13,894 INFO L225 Difference]: With dead ends: 1144 [2020-09-21 10:08:13,894 INFO L226 Difference]: Without dead ends: 612 [2020-09-21 10:08:13,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-09-21 10:08:13,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-09-21 10:08:13,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 563. [2020-09-21 10:08:13,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-09-21 10:08:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 672 transitions. [2020-09-21 10:08:13,979 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 672 transitions. Word has length 84 [2020-09-21 10:08:13,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:13,979 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 672 transitions. [2020-09-21 10:08:13,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:08:13,980 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 672 transitions. [2020-09-21 10:08:13,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-21 10:08:13,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:13,982 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] [2020-09-21 10:08:13,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:08:13,982 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:13,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:13,983 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2020-09-21 10:08:13,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:13,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67519747] [2020-09-21 10:08:13,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,327 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:14,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:08:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:08:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 10:08:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 10:08:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-21 10:08:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,589 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 10:08:14,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67519747] [2020-09-21 10:08:14,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:08:14,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 10:08:14,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726169929] [2020-09-21 10:08:14,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:08:14,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:14,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:08:14,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:08:14,592 INFO L87 Difference]: Start difference. First operand 563 states and 672 transitions. Second operand 12 states. [2020-09-21 10:08:15,309 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:16,144 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:17,157 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:08:17,552 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:08:17,910 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:08:18,231 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:08:18,587 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:08:18,955 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:08:19,555 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-21 10:08:19,879 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:08:20,238 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:08:20,604 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:08:22,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:22,907 INFO L93 Difference]: Finished difference Result 1664 states and 2066 transitions. [2020-09-21 10:08:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-21 10:08:22,908 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-09-21 10:08:22,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:22,916 INFO L225 Difference]: With dead ends: 1664 [2020-09-21 10:08:22,916 INFO L226 Difference]: Without dead ends: 1125 [2020-09-21 10:08:22,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-09-21 10:08:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-09-21 10:08:23,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2020-09-21 10:08:23,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-09-21 10:08:23,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1253 transitions. [2020-09-21 10:08:23,072 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1253 transitions. Word has length 96 [2020-09-21 10:08:23,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:23,072 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1253 transitions. [2020-09-21 10:08:23,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:08:23,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1253 transitions. [2020-09-21 10:08:23,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-21 10:08:23,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:23,075 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] [2020-09-21 10:08:23,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:08:23,075 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:23,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:23,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2020-09-21 10:08:23,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:23,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155499170] [2020-09-21 10:08:23,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,415 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:23,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:08:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:08:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:08:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 10:08:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 10:08:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 10:08:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:08:23,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155499170] [2020-09-21 10:08:23,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:23,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-21 10:08:23,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863279927] [2020-09-21 10:08:23,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-21 10:08:23,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:23,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-21 10:08:23,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:08:23,610 INFO L87 Difference]: Start difference. First operand 1062 states and 1253 transitions. Second operand 14 states. [2020-09-21 10:08:24,208 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:24,535 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:24,833 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:25,537 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:26,493 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:26,933 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:27,637 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:27,982 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:08:28,325 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:08:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:30,419 INFO L93 Difference]: Finished difference Result 2205 states and 2747 transitions. [2020-09-21 10:08:30,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-21 10:08:30,420 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-09-21 10:08:30,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:30,427 INFO L225 Difference]: With dead ends: 2205 [2020-09-21 10:08:30,428 INFO L226 Difference]: Without dead ends: 1167 [2020-09-21 10:08:30,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-09-21 10:08:30,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-09-21 10:08:30,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 978. [2020-09-21 10:08:30,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-09-21 10:08:30,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1149 transitions. [2020-09-21 10:08:30,639 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1149 transitions. Word has length 100 [2020-09-21 10:08:30,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:30,640 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1149 transitions. [2020-09-21 10:08:30,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-21 10:08:30,640 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1149 transitions. [2020-09-21 10:08:30,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-21 10:08:30,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:30,642 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] [2020-09-21 10:08:30,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:08:30,643 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:30,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:30,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2020-09-21 10:08:30,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:30,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529242672] [2020-09-21 10:08:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:30,993 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:30,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:08:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:08:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 10:08:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 10:08:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 10:08:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,163 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 10:08:31,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529242672] [2020-09-21 10:08:31,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:31,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-21 10:08:31,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918553521] [2020-09-21 10:08:31,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 10:08:31,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:31,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 10:08:31,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-21 10:08:31,166 INFO L87 Difference]: Start difference. First operand 978 states and 1149 transitions. Second operand 13 states. [2020-09-21 10:08:31,865 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:32,194 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:32,488 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:33,820 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:34,409 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:34,813 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:08:35,185 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:08:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:36,005 INFO L93 Difference]: Finished difference Result 1688 states and 1988 transitions. [2020-09-21 10:08:36,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 10:08:36,006 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-09-21 10:08:36,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:36,007 INFO L225 Difference]: With dead ends: 1688 [2020-09-21 10:08:36,007 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:08:36,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-09-21 10:08:36,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:08:36,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:08:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:08:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:08:36,013 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2020-09-21 10:08:36,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:36,013 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:08:36,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 10:08:36,013 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:08:36,013 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:08:36,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 10:08:36,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:08:36,196 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:08:36,367 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:08:36,538 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:08:36,721 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:08:36,909 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:08:37,082 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:08:37,264 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:08:37,437 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:08:37,602 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:08:37,772 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:08:37,938 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:08:38,100 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:08:38,271 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:08:38,434 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:08:38,604 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:08:38,769 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:08:38,943 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:08:39,102 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190