/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_spec2_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:36:24,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:36:24,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:36:24,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:36:24,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:36:24,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:36:24,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:36:24,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:36:24,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:36:24,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:36:24,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:36:24,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:36:24,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:36:24,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:36:24,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:36:24,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:36:24,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:36:24,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:36:24,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:36:24,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:36:24,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:36:24,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:36:24,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:36:24,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:36:24,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:36:24,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:36:24,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:36:24,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:36:24,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:36:24,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:36:24,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:36:24,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:36:24,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:36:24,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:36:24,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:36:24,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:36:24,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:36:24,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:36:24,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:36:24,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:36:24,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:36:24,665 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 [2020-08-27 21:36:24,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:36:24,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:36:24,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:36:24,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:36:24,711 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:36:24,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:36:24,712 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:36:24,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:36:24,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:36:24,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:36:24,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:36:24,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:36:24,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:36:24,714 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:36:24,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:36:24,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:36:24,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:36:24,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:36:24,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:36:24,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:36:24,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:36:24,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:36:24,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:36:24,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:36:24,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:36:24,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:36:24,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:36:24,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:36:24,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:36:24,717 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 [2020-08-27 21:36:25,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:36:25,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:36:25,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:36:25,182 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:36:25,182 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:36:25,183 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-08-27 21:36:25,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a37187f3a/6f631c9082d547b6bf89266c775d8bb8/FLAG9737fc921 [2020-08-27 21:36:25,938 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:36:25,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-08-27 21:36:25,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a37187f3a/6f631c9082d547b6bf89266c775d8bb8/FLAG9737fc921 [2020-08-27 21:36:26,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a37187f3a/6f631c9082d547b6bf89266c775d8bb8 [2020-08-27 21:36:26,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:36:26,170 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:36:26,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:36:26,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:36:26,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:36:26,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:36:26" (1/1) ... [2020-08-27 21:36:26,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:26, skipping insertion in model container [2020-08-27 21:36:26,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:36:26" (1/1) ... [2020-08-27 21:36:26,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:36:26,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:36:26,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:36:26,802 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:36:26,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:36:26,943 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:36:26,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:26 WrapperNode [2020-08-27 21:36:26,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:36:26,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:36:26,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:36:26,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:36:26,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:26" (1/1) ... [2020-08-27 21:36:26,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:26" (1/1) ... [2020-08-27 21:36:26,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:26" (1/1) ... [2020-08-27 21:36:26,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:26" (1/1) ... [2020-08-27 21:36:27,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:26" (1/1) ... [2020-08-27 21:36:27,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:26" (1/1) ... [2020-08-27 21:36:27,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:26" (1/1) ... [2020-08-27 21:36:27,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:36:27,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:36:27,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:36:27,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:36:27,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:26" (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 [2020-08-27 21:36:27,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:36:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:36:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:36:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-27 21:36:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-27 21:36:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:36:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:36:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:36:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:36:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:36:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:36:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:36:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:36:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:36:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:36:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:36:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:36:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:36:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:36:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:36:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:36:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:36:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:36:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-27 21:36:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-27 21:36:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:36:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:36:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:36:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:36:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:36:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:36:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:36:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:36:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:36:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:36:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:36:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:36:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:36:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:36:27,189 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:36:27,189 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:36:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:36:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:36:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:36:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:36:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:36:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:36:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-27 21:36:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-27 21:36:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:36:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:36:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:36:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:36:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:36:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:36:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:36:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-27 21:36:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-27 21:36:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:36:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:36:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:36:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:36:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:36:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:36:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:36:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:36:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:36:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:36:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:36:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:36:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:36:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:36:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:36:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:36:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:36:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:36:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:36:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:36:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:36:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:36:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:36:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:36:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:36:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:36:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:36:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:36:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:36:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:36:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:36:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:36:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:36:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:36:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:36:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:36:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:36:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:36:28,340 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:36:28,340 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:36:28,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:36:28 BoogieIcfgContainer [2020-08-27 21:36:28,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:36:28,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:36:28,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:36:28,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:36:28,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:36:26" (1/3) ... [2020-08-27 21:36:28,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dec5a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:36:28, skipping insertion in model container [2020-08-27 21:36:28,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:26" (2/3) ... [2020-08-27 21:36:28,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dec5a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:36:28, skipping insertion in model container [2020-08-27 21:36:28,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:36:28" (3/3) ... [2020-08-27 21:36:28,357 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product40.cil.c [2020-08-27 21:36:28,369 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:36:28,380 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:36:28,402 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:36:28,429 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:36:28,429 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:36:28,429 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:36:28,430 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:36:28,430 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:36:28,430 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:36:28,430 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:36:28,430 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:36:28,457 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-27 21:36:28,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-27 21:36:28,470 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:36:28,472 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] [2020-08-27 21:36:28,472 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:36:28,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:36:28,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1292486909, now seen corresponding path program 1 times [2020-08-27 21:36:28,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:36:28,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728482982] [2020-08-27 21:36:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:36:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:29,243 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:36:29,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:36:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:29,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:36:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:29,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:36:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:36:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:29,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:36:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:29,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:36:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:29,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:36:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:29,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-27 21:36:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:36:29,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728482982] [2020-08-27 21:36:29,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:36:29,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:36:29,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102753102] [2020-08-27 21:36:29,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:36:29,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:36:29,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:36:29,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:36:29,471 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2020-08-27 21:36:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:36:30,657 INFO L93 Difference]: Finished difference Result 311 states and 408 transitions. [2020-08-27 21:36:30,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 21:36:30,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-27 21:36:30,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:36:30,677 INFO L225 Difference]: With dead ends: 311 [2020-08-27 21:36:30,677 INFO L226 Difference]: Without dead ends: 174 [2020-08-27 21:36:30,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:36:30,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-27 21:36:30,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 138. [2020-08-27 21:36:30,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-27 21:36:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2020-08-27 21:36:30,785 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 51 [2020-08-27 21:36:30,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:36:30,786 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2020-08-27 21:36:30,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:36:30,786 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2020-08-27 21:36:30,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-27 21:36:30,792 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:36:30,793 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] [2020-08-27 21:36:30,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:36:30,793 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:36:30,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:36:30,794 INFO L82 PathProgramCache]: Analyzing trace with hash -11798802, now seen corresponding path program 1 times [2020-08-27 21:36:30,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:36:30,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532271833] [2020-08-27 21:36:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:36:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:31,269 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:36:31,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:36:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:31,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:36:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:31,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:36:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:31,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:36:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:31,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:36:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:31,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:36:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:31,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:36:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:31,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:36:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:36:31,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532271833] [2020-08-27 21:36:31,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:36:31,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 21:36:31,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519504598] [2020-08-27 21:36:31,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 21:36:31,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:36:31,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 21:36:31,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:36:31,346 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand 5 states. [2020-08-27 21:36:31,911 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:36:32,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:36:32,968 INFO L93 Difference]: Finished difference Result 246 states and 307 transitions. [2020-08-27 21:36:32,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-27 21:36:32,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-27 21:36:32,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:36:32,972 INFO L225 Difference]: With dead ends: 246 [2020-08-27 21:36:32,972 INFO L226 Difference]: Without dead ends: 164 [2020-08-27 21:36:32,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:36:32,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-27 21:36:33,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 129. [2020-08-27 21:36:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-27 21:36:33,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2020-08-27 21:36:33,021 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 52 [2020-08-27 21:36:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:36:33,021 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2020-08-27 21:36:33,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-27 21:36:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2020-08-27 21:36:33,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-27 21:36:33,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:36:33,024 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] [2020-08-27 21:36:33,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:36:33,025 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:36:33,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:36:33,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1490469892, now seen corresponding path program 1 times [2020-08-27 21:36:33,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:36:33,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416341874] [2020-08-27 21:36:33,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:36:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:33,489 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:36:33,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:36:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:33,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:36:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:33,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:36:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:36:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:33,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:36:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:33,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:36:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:33,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-27 21:36:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:33,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:36:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:36:33,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416341874] [2020-08-27 21:36:33,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:36:33,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:36:33,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412014230] [2020-08-27 21:36:33,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:36:33,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:36:33,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:36:33,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:36:33,602 INFO L87 Difference]: Start difference. First operand 129 states and 151 transitions. Second operand 9 states. [2020-08-27 21:36:34,027 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:36:34,396 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:36:34,721 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:36:35,034 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:36:35,964 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:36:38,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:36:38,208 INFO L93 Difference]: Finished difference Result 439 states and 556 transitions. [2020-08-27 21:36:38,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-27 21:36:38,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-27 21:36:38,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:36:38,215 INFO L225 Difference]: With dead ends: 439 [2020-08-27 21:36:38,215 INFO L226 Difference]: Without dead ends: 338 [2020-08-27 21:36:38,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:36:38,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-27 21:36:38,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 269. [2020-08-27 21:36:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-08-27 21:36:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 328 transitions. [2020-08-27 21:36:38,293 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 328 transitions. Word has length 57 [2020-08-27 21:36:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:36:38,293 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 328 transitions. [2020-08-27 21:36:38,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:36:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 328 transitions. [2020-08-27 21:36:38,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-27 21:36:38,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:36:38,297 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] [2020-08-27 21:36:38,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:36:38,297 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:36:38,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:36:38,298 INFO L82 PathProgramCache]: Analyzing trace with hash -512554003, now seen corresponding path program 1 times [2020-08-27 21:36:38,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:36:38,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553638027] [2020-08-27 21:36:38,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:36:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:38,706 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:36:38,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:36:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:38,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:36:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:38,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:36:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:38,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:36:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:38,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:36:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:38,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:36:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:38,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:36:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:38,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:36:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:38,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-27 21:36:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:36:38,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553638027] [2020-08-27 21:36:38,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:36:38,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:36:38,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105550110] [2020-08-27 21:36:38,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:36:38,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:36:38,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:36:38,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:36:38,865 INFO L87 Difference]: Start difference. First operand 269 states and 328 transitions. Second operand 9 states. [2020-08-27 21:36:39,335 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:36:40,618 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:36:41,057 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:36:41,357 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:36:41,721 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:36:43,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:36:43,535 INFO L93 Difference]: Finished difference Result 864 states and 1152 transitions. [2020-08-27 21:36:43,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-27 21:36:43,535 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-27 21:36:43,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:36:43,541 INFO L225 Difference]: With dead ends: 864 [2020-08-27 21:36:43,541 INFO L226 Difference]: Without dead ends: 623 [2020-08-27 21:36:43,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-27 21:36:43,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-27 21:36:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 486. [2020-08-27 21:36:43,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-27 21:36:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 596 transitions. [2020-08-27 21:36:43,701 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 596 transitions. Word has length 62 [2020-08-27 21:36:43,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:36:43,702 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 596 transitions. [2020-08-27 21:36:43,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:36:43,702 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 596 transitions. [2020-08-27 21:36:43,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-27 21:36:43,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:36:43,706 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] [2020-08-27 21:36:43,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:36:43,706 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:36:43,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:36:43,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1361940215, now seen corresponding path program 1 times [2020-08-27 21:36:43,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:36:43,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210165591] [2020-08-27 21:36:43,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:36:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:44,038 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:36:44,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:36:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:44,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:36:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:44,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:36:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:44,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:36:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:44,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:36:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:44,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:36:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:44,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:36:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:44,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:36:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:44,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-27 21:36:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:44,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-27 21:36:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:44,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:36:44,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210165591] [2020-08-27 21:36:44,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:36:44,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-27 21:36:44,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687966533] [2020-08-27 21:36:44,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:36:44,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:36:44,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:36:44,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:36:44,175 INFO L87 Difference]: Start difference. First operand 486 states and 596 transitions. Second operand 10 states. [2020-08-27 21:36:44,595 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:36:45,816 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:36:46,142 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:36:46,467 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:36:47,307 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:36:48,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:36:48,854 INFO L93 Difference]: Finished difference Result 1373 states and 1890 transitions. [2020-08-27 21:36:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-27 21:36:48,855 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-27 21:36:48,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:36:48,863 INFO L225 Difference]: With dead ends: 1373 [2020-08-27 21:36:48,863 INFO L226 Difference]: Without dead ends: 915 [2020-08-27 21:36:48,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-27 21:36:48,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-08-27 21:36:48,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 709. [2020-08-27 21:36:49,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-08-27 21:36:49,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 863 transitions. [2020-08-27 21:36:49,005 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 863 transitions. Word has length 66 [2020-08-27 21:36:49,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:36:49,005 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 863 transitions. [2020-08-27 21:36:49,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:36:49,006 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 863 transitions. [2020-08-27 21:36:49,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-27 21:36:49,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:36:49,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:36:49,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:36:49,009 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:36:49,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:36:49,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1572074791, now seen corresponding path program 1 times [2020-08-27 21:36:49,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:36:49,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664501386] [2020-08-27 21:36:49,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:36:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,353 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:36:49,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:36:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:36:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:36:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:36:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:36:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:36:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:36:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:36:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:36:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:36:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:36:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:36:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:36:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-27 21:36:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:36:49,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664501386] [2020-08-27 21:36:49,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:36:49,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-27 21:36:49,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605958105] [2020-08-27 21:36:49,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:36:49,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:36:49,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:36:49,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:36:49,567 INFO L87 Difference]: Start difference. First operand 709 states and 863 transitions. Second operand 10 states. [2020-08-27 21:36:50,268 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:36:51,593 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:36:51,931 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:36:52,295 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:36:52,659 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:36:54,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:36:54,638 INFO L93 Difference]: Finished difference Result 2413 states and 3450 transitions. [2020-08-27 21:36:54,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-27 21:36:54,639 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-27 21:36:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:36:54,653 INFO L225 Difference]: With dead ends: 2413 [2020-08-27 21:36:54,654 INFO L226 Difference]: Without dead ends: 1732 [2020-08-27 21:36:54,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-27 21:36:54,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-08-27 21:36:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1279. [2020-08-27 21:36:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-27 21:36:54,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1554 transitions. [2020-08-27 21:36:54,953 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1554 transitions. Word has length 89 [2020-08-27 21:36:54,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:36:54,954 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1554 transitions. [2020-08-27 21:36:54,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:36:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1554 transitions. [2020-08-27 21:36:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-27 21:36:54,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:36:54,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:36:54,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:36:54,959 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:36:54,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:36:54,959 INFO L82 PathProgramCache]: Analyzing trace with hash -153406106, now seen corresponding path program 1 times [2020-08-27 21:36:54,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:36:54,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673522713] [2020-08-27 21:36:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:36:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,302 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:36:55,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:36:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:36:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:36:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:36:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:36:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:36:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:36:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:36:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:36:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:36:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:36:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:36:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:36:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-27 21:36:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:36:55,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673522713] [2020-08-27 21:36:55,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:36:55,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-27 21:36:55,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903604991] [2020-08-27 21:36:55,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:36:55,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:36:55,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:36:55,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:36:55,499 INFO L87 Difference]: Start difference. First operand 1279 states and 1554 transitions. Second operand 10 states. [2020-08-27 21:36:57,064 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:36:57,381 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:36:57,719 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:36:58,021 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:36:59,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:36:59,429 INFO L93 Difference]: Finished difference Result 2983 states and 3988 transitions. [2020-08-27 21:36:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-27 21:36:59,430 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-27 21:36:59,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:36:59,443 INFO L225 Difference]: With dead ends: 2983 [2020-08-27 21:36:59,443 INFO L226 Difference]: Without dead ends: 1732 [2020-08-27 21:36:59,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:36:59,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-08-27 21:36:59,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1319. [2020-08-27 21:36:59,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-08-27 21:36:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1594 transitions. [2020-08-27 21:36:59,711 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1594 transitions. Word has length 89 [2020-08-27 21:36:59,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:36:59,712 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1594 transitions. [2020-08-27 21:36:59,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:36:59,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1594 transitions. [2020-08-27 21:36:59,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-27 21:36:59,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:36:59,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:36:59,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:36:59,717 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:36:59,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:36:59,717 INFO L82 PathProgramCache]: Analyzing trace with hash 548193768, now seen corresponding path program 1 times [2020-08-27 21:36:59,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:36:59,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549284442] [2020-08-27 21:36:59,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:36:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,086 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:00,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:37:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:37:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:37:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:37:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-27 21:37:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:37:00,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549284442] [2020-08-27 21:37:00,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:00,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:37:00,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127295016] [2020-08-27 21:37:00,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:37:00,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:00,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:37:00,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:37:00,316 INFO L87 Difference]: Start difference. First operand 1319 states and 1594 transitions. Second operand 12 states. [2020-08-27 21:37:00,960 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:01,288 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:01,574 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:02,538 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:02,905 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:03,231 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:04,579 INFO L93 Difference]: Finished difference Result 2667 states and 3530 transitions. [2020-08-27 21:37:04,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:37:04,579 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-27 21:37:04,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:04,589 INFO L225 Difference]: With dead ends: 2667 [2020-08-27 21:37:04,589 INFO L226 Difference]: Without dead ends: 1376 [2020-08-27 21:37:04,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-27 21:37:04,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-08-27 21:37:04,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1087. [2020-08-27 21:37:04,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-08-27 21:37:04,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1282 transitions. [2020-08-27 21:37:04,850 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1282 transitions. Word has length 89 [2020-08-27 21:37:04,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:04,850 INFO L479 AbstractCegarLoop]: Abstraction has 1087 states and 1282 transitions. [2020-08-27 21:37:04,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:37:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1282 transitions. [2020-08-27 21:37:04,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-27 21:37:04,855 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:04,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:37:04,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:37:04,856 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:04,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:04,856 INFO L82 PathProgramCache]: Analyzing trace with hash 81932175, now seen corresponding path program 1 times [2020-08-27 21:37:04,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:04,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380533696] [2020-08-27 21:37:04,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,189 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:05,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:37:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:37:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:37:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:37:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-27 21:37:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-27 21:37:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:37:05,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380533696] [2020-08-27 21:37:05,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:05,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:37:05,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572058988] [2020-08-27 21:37:05,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:37:05,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:05,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:37:05,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:37:05,331 INFO L87 Difference]: Start difference. First operand 1087 states and 1282 transitions. Second operand 8 states. [2020-08-27 21:37:05,754 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:08,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:08,654 INFO L93 Difference]: Finished difference Result 2185 states and 2908 transitions. [2020-08-27 21:37:08,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-27 21:37:08,655 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-27 21:37:08,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:08,669 INFO L225 Difference]: With dead ends: 2185 [2020-08-27 21:37:08,669 INFO L226 Difference]: Without dead ends: 2182 [2020-08-27 21:37:08,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-27 21:37:08,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2020-08-27 21:37:09,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 1684. [2020-08-27 21:37:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2020-08-27 21:37:09,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2013 transitions. [2020-08-27 21:37:09,125 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2013 transitions. Word has length 93 [2020-08-27 21:37:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:09,129 INFO L479 AbstractCegarLoop]: Abstraction has 1684 states and 2013 transitions. [2020-08-27 21:37:09,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:37:09,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2013 transitions. [2020-08-27 21:37:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-27 21:37:09,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:09,137 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:37:09,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:37:09,138 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:09,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:09,138 INFO L82 PathProgramCache]: Analyzing trace with hash 688265763, now seen corresponding path program 1 times [2020-08-27 21:37:09,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:09,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315966669] [2020-08-27 21:37:09,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,487 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:09,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:37:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:37:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:37:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:37:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:37:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 21:37:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-27 21:37:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-27 21:37:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:37:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-27 21:37:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:37:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-27 21:37:09,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315966669] [2020-08-27 21:37:09,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:37:09,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-27 21:37:09,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96503601] [2020-08-27 21:37:09,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-27 21:37:09,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:09,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-27 21:37:09,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-27 21:37:09,875 INFO L87 Difference]: Start difference. First operand 1684 states and 2013 transitions. Second operand 19 states. [2020-08-27 21:37:10,582 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:10,989 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:37:11,318 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:37:11,658 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:37:12,582 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:13,394 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:13,879 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:16,838 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:17,146 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:17,475 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:17,831 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:18,149 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:18,460 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:18,809 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:19,127 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:20,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:20,368 INFO L93 Difference]: Finished difference Result 3638 states and 4589 transitions. [2020-08-27 21:37:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-27 21:37:20,369 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 152 [2020-08-27 21:37:20,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:20,380 INFO L225 Difference]: With dead ends: 3638 [2020-08-27 21:37:20,381 INFO L226 Difference]: Without dead ends: 1982 [2020-08-27 21:37:20,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-27 21:37:20,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2020-08-27 21:37:20,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1630. [2020-08-27 21:37:20,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1630 states. [2020-08-27 21:37:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 1911 transitions. [2020-08-27 21:37:20,779 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 1911 transitions. Word has length 152 [2020-08-27 21:37:20,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:20,780 INFO L479 AbstractCegarLoop]: Abstraction has 1630 states and 1911 transitions. [2020-08-27 21:37:20,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-27 21:37:20,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 1911 transitions. [2020-08-27 21:37:20,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-27 21:37:20,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:20,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:37:20,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 21:37:20,788 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:20,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:20,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1018775150, now seen corresponding path program 1 times [2020-08-27 21:37:20,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:20,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388698985] [2020-08-27 21:37:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,199 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:21,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:37:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:37:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:37:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:37:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:37:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 21:37:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-27 21:37:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-27 21:37:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:37:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-27 21:37:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-27 21:37:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-27 21:37:21,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388698985] [2020-08-27 21:37:21,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:37:21,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-27 21:37:21,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305128104] [2020-08-27 21:37:21,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:37:21,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:21,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:37:21,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:37:21,535 INFO L87 Difference]: Start difference. First operand 1630 states and 1911 transitions. Second operand 10 states. [2020-08-27 21:37:22,983 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189