/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:43:01,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:43:01,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:43:01,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:43:01,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:43:01,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:43:01,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:43:01,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:43:01,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:43:01,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:43:01,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:43:01,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:43:01,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:43:01,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:43:01,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:43:01,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:43:01,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:43:01,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:43:01,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:43:01,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:43:01,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:43:01,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:43:01,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:43:01,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:43:01,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:43:01,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:43:01,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:43:01,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:43:01,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:43:01,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:43:01,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:43:01,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:43:01,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:43:01,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:43:01,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:43:01,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:43:01,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:43:01,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:43:01,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:43:01,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:43:01,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:43:01,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 14:43:01,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:43:01,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:43:01,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:43:01,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:43:01,679 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:43:01,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:43:01,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:43:01,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:43:01,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:43:01,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:43:01,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:43:01,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:43:01,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:43:01,682 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:43:01,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:43:01,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:43:01,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:43:01,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:43:01,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:43:01,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:43:01,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:43:01,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:43:01,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:43:01,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:43:01,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:43:01,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:43:01,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:43:01,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:43:01,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:43:01,685 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:43:02,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:43:02,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:43:02,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:43:02,144 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:43:02,144 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:43:02,145 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c [2020-09-24 14:43:02,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/752bc25e5/79cafae4fc5d4a848f0c6729a0d7b980/FLAGb742eb53b [2020-09-24 14:43:02,872 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:43:02,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c [2020-09-24 14:43:02,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/752bc25e5/79cafae4fc5d4a848f0c6729a0d7b980/FLAGb742eb53b [2020-09-24 14:43:03,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/752bc25e5/79cafae4fc5d4a848f0c6729a0d7b980 [2020-09-24 14:43:03,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:43:03,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:43:03,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:43:03,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:43:03,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:43:03,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:43:03" (1/1) ... [2020-09-24 14:43:03,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be095dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:43:03, skipping insertion in model container [2020-09-24 14:43:03,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:43:03" (1/1) ... [2020-09-24 14:43:03,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:43:03,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:43:03,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:43:03,693 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:43:03,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:43:03,869 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:43:03,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:43:03 WrapperNode [2020-09-24 14:43:03,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:43:03,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:43:03,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:43:03,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:43:03,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:43:03" (1/1) ... [2020-09-24 14:43:03,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:43:03" (1/1) ... [2020-09-24 14:43:03,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:43:03" (1/1) ... [2020-09-24 14:43:03,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:43:03" (1/1) ... [2020-09-24 14:43:03,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:43:03" (1/1) ... [2020-09-24 14:43:03,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:43:03" (1/1) ... [2020-09-24 14:43:03,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:43:03" (1/1) ... [2020-09-24 14:43:03,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:43:03,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:43:03,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:43:03,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:43:03,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:43:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:43:04,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:43:04,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:43:04,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 14:43:04,082 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 14:43:04,082 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 14:43:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 14:43:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 14:43:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 14:43:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 14:43:04,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 14:43:04,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 14:43:04,085 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 14:43:04,085 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-09-24 14:43:04,085 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-09-24 14:43:04,086 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-09-24 14:43:04,087 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-09-24 14:43:04,087 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-09-24 14:43:04,087 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-09-24 14:43:04,087 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 14:43:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-09-24 14:43:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-09-24 14:43:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 14:43:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 14:43:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 14:43:04,089 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 14:43:04,089 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 14:43:04,089 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 14:43:04,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 14:43:04,090 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 14:43:04,090 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 14:43:04,090 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 14:43:04,091 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 14:43:04,091 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 14:43:04,091 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 14:43:04,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:43:04,091 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 14:43:04,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-24 14:43:04,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-24 14:43:04,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 14:43:04,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 14:43:04,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 14:43:04,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 14:43:04,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 14:43:04,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 14:43:04,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 14:43:04,093 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 14:43:04,094 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 14:43:04,094 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 14:43:04,094 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 14:43:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:43:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:43:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 14:43:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 14:43:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 14:43:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 14:43:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 14:43:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 14:43:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 14:43:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 14:43:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 14:43:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:43:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 14:43:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 14:43:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 14:43:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 14:43:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 14:43:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 14:43:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 14:43:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-24 14:43:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 14:43:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-09-24 14:43:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 14:43:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-09-24 14:43:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-09-24 14:43:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 14:43:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-09-24 14:43:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-09-24 14:43:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 14:43:04,102 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-09-24 14:43:04,102 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-09-24 14:43:04,102 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-09-24 14:43:04,102 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 14:43:04,102 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 14:43:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 14:43:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-24 14:43:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 14:43:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 14:43:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 14:43:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 14:43:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 14:43:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:43:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 14:43:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 14:43:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 14:43:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 14:43:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 14:43:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 14:43:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 14:43:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:43:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 14:43:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 14:43:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:43:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 14:43:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 14:43:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:43:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 14:43:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 14:43:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 14:43:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 14:43:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:43:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 14:43:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:43:05,409 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:43:05,409 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 14:43:05,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:43:05 BoogieIcfgContainer [2020-09-24 14:43:05,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:43:05,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:43:05,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:43:05,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:43:05,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:43:03" (1/3) ... [2020-09-24 14:43:05,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e5fdb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:43:05, skipping insertion in model container [2020-09-24 14:43:05,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:43:03" (2/3) ... [2020-09-24 14:43:05,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e5fdb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:43:05, skipping insertion in model container [2020-09-24 14:43:05,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:43:05" (3/3) ... [2020-09-24 14:43:05,427 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_productSimulator.cil.c [2020-09-24 14:43:05,440 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:43:05,452 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:43:05,476 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:43:05,514 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:43:05,514 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:43:05,514 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:43:05,515 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:43:05,515 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:43:05,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:43:05,515 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:43:05,516 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:43:05,548 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states. [2020-09-24 14:43:05,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-24 14:43:05,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:43:05,575 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:43:05,576 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:43:05,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:43:05,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1714706327, now seen corresponding path program 1 times [2020-09-24 14:43:05,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:43:05,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88099579] [2020-09-24 14:43:05,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:43:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,534 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 14:43:06,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:43:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 14:43:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-24 14:43:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:43:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 14:43:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:43:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 14:43:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 14:43:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 14:43:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-24 14:43:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 14:43:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-24 14:43:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-09-24 14:43:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-09-24 14:43:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-24 14:43:06,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88099579] [2020-09-24 14:43:06,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:43:06,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:43:06,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993202375] [2020-09-24 14:43:06,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:43:06,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:43:06,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:43:06,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:43:06,857 INFO L87 Difference]: Start difference. First operand 424 states. Second operand 6 states. [2020-09-24 14:43:09,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:43:09,709 INFO L93 Difference]: Finished difference Result 687 states and 830 transitions. [2020-09-24 14:43:09,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 14:43:09,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2020-09-24 14:43:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:43:09,736 INFO L225 Difference]: With dead ends: 687 [2020-09-24 14:43:09,736 INFO L226 Difference]: Without dead ends: 441 [2020-09-24 14:43:09,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:43:09,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-09-24 14:43:09,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 373. [2020-09-24 14:43:09,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-09-24 14:43:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 420 transitions. [2020-09-24 14:43:09,870 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 420 transitions. Word has length 230 [2020-09-24 14:43:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:43:09,872 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 420 transitions. [2020-09-24 14:43:09,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:43:09,873 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 420 transitions. [2020-09-24 14:43:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-24 14:43:09,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:43:09,881 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:43:09,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:43:09,882 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:43:09,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:43:09,882 INFO L82 PathProgramCache]: Analyzing trace with hash -580873481, now seen corresponding path program 1 times [2020-09-24 14:43:09,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:43:09,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468135094] [2020-09-24 14:43:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:43:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,362 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 14:43:10,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:43:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 14:43:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-24 14:43:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:43:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 14:43:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:43:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 14:43:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 14:43:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 14:43:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-24 14:43:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 14:43:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-24 14:43:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-09-24 14:43:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-09-24 14:43:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-24 14:43:10,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468135094] [2020-09-24 14:43:10,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:43:10,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 14:43:10,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262519504] [2020-09-24 14:43:10,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 14:43:10,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:43:10,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 14:43:10,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:43:10,676 INFO L87 Difference]: Start difference. First operand 373 states and 420 transitions. Second operand 7 states. [2020-09-24 14:43:11,962 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-09-24 14:43:14,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:43:14,133 INFO L93 Difference]: Finished difference Result 604 states and 709 transitions. [2020-09-24 14:43:14,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 14:43:14,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-09-24 14:43:14,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:43:14,154 INFO L225 Difference]: With dead ends: 604 [2020-09-24 14:43:14,155 INFO L226 Difference]: Without dead ends: 430 [2020-09-24 14:43:14,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-09-24 14:43:14,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-09-24 14:43:14,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 363. [2020-09-24 14:43:14,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-09-24 14:43:14,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 407 transitions. [2020-09-24 14:43:14,250 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 407 transitions. Word has length 231 [2020-09-24 14:43:14,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:43:14,251 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 407 transitions. [2020-09-24 14:43:14,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 14:43:14,252 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 407 transitions. [2020-09-24 14:43:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-24 14:43:14,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:43:14,256 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:43:14,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:43:14,257 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:43:14,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:43:14,257 INFO L82 PathProgramCache]: Analyzing trace with hash -338755508, now seen corresponding path program 1 times [2020-09-24 14:43:14,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:43:14,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642635732] [2020-09-24 14:43:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:43:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,779 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 14:43:14,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:43:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 14:43:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-24 14:43:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:43:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 14:43:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:43:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 14:43:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 14:43:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 14:43:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-24 14:43:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 14:43:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-24 14:43:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-09-24 14:43:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-24 14:43:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-24 14:43:15,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642635732] [2020-09-24 14:43:15,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:43:15,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 14:43:15,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216129186] [2020-09-24 14:43:15,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 14:43:15,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:43:15,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 14:43:15,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-09-24 14:43:15,326 INFO L87 Difference]: Start difference. First operand 363 states and 407 transitions. Second operand 14 states. [2020-09-24 14:43:16,456 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-09-24 14:43:17,247 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2020-09-24 14:43:18,407 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-09-24 14:43:19,167 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 218 [2020-09-24 14:43:20,872 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-09-24 14:43:21,301 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-09-24 14:43:26,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:43:26,803 INFO L93 Difference]: Finished difference Result 954 states and 1139 transitions. [2020-09-24 14:43:26,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 14:43:26,804 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 241 [2020-09-24 14:43:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:43:26,812 INFO L225 Difference]: With dead ends: 954 [2020-09-24 14:43:26,812 INFO L226 Difference]: Without dead ends: 748 [2020-09-24 14:43:26,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=287, Invalid=903, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 14:43:26,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-09-24 14:43:26,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 635. [2020-09-24 14:43:26,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2020-09-24 14:43:26,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 735 transitions. [2020-09-24 14:43:26,930 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 735 transitions. Word has length 241 [2020-09-24 14:43:26,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:43:26,931 INFO L479 AbstractCegarLoop]: Abstraction has 635 states and 735 transitions. [2020-09-24 14:43:26,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 14:43:26,931 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 735 transitions. [2020-09-24 14:43:26,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-24 14:43:26,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:43:26,939 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:43:26,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:43:26,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:43:26,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:43:26,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1581512673, now seen corresponding path program 1 times [2020-09-24 14:43:26,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:43:26,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410776267] [2020-09-24 14:43:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:43:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,472 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 14:43:27,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:43:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 14:43:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-24 14:43:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:43:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 14:43:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:43:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 14:43:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 14:43:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 14:43:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-24 14:43:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 14:43:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-24 14:43:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-09-24 14:43:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-24 14:43:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-09-24 14:43:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-24 14:43:27,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410776267] [2020-09-24 14:43:27,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:43:27,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 14:43:27,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180253261] [2020-09-24 14:43:27,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 14:43:27,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:43:27,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 14:43:27,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 14:43:27,816 INFO L87 Difference]: Start difference. First operand 635 states and 735 transitions. Second operand 12 states. [2020-09-24 14:43:28,600 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-09-24 14:43:30,800 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-09-24 14:43:31,258 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-09-24 14:43:31,886 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-09-24 14:43:32,324 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-09-24 14:43:32,831 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-09-24 14:43:33,309 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-09-24 14:43:33,731 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-09-24 14:43:34,496 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-09-24 14:43:37,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:43:37,762 INFO L93 Difference]: Finished difference Result 1777 states and 2200 transitions. [2020-09-24 14:43:37,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 14:43:37,763 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 250 [2020-09-24 14:43:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:43:37,777 INFO L225 Difference]: With dead ends: 1777 [2020-09-24 14:43:37,778 INFO L226 Difference]: Without dead ends: 1299 [2020-09-24 14:43:37,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=364, Invalid=968, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 14:43:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2020-09-24 14:43:38,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1065. [2020-09-24 14:43:38,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-09-24 14:43:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1252 transitions. [2020-09-24 14:43:38,118 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1252 transitions. Word has length 250 [2020-09-24 14:43:38,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:43:38,119 INFO L479 AbstractCegarLoop]: Abstraction has 1065 states and 1252 transitions. [2020-09-24 14:43:38,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 14:43:38,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1252 transitions. [2020-09-24 14:43:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-24 14:43:38,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:43:38,133 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:43:38,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:43:38,133 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:43:38,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:43:38,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1550661076, now seen corresponding path program 1 times [2020-09-24 14:43:38,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:43:38,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453486643] [2020-09-24 14:43:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:43:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,676 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 14:43:38,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:43:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 14:43:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-24 14:43:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:43:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 14:43:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:43:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 14:43:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 14:43:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 14:43:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-24 14:43:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 14:43:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-24 14:43:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-09-24 14:43:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-09-24 14:43:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-24 14:43:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:38,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-09-24 14:43:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,000 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-24 14:43:39,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453486643] [2020-09-24 14:43:39,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:43:39,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 14:43:39,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508266459] [2020-09-24 14:43:39,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 14:43:39,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:43:39,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 14:43:39,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-24 14:43:39,004 INFO L87 Difference]: Start difference. First operand 1065 states and 1252 transitions. Second operand 13 states. [2020-09-24 14:43:39,773 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-09-24 14:43:42,410 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-09-24 14:43:42,799 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-09-24 14:43:43,259 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-09-24 14:43:43,697 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-09-24 14:43:44,048 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-09-24 14:43:45,384 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-09-24 14:43:45,753 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-09-24 14:43:46,248 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-09-24 14:43:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:43:49,361 INFO L93 Difference]: Finished difference Result 2780 states and 3600 transitions. [2020-09-24 14:43:49,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 14:43:49,362 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 255 [2020-09-24 14:43:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:43:49,374 INFO L225 Difference]: With dead ends: 2780 [2020-09-24 14:43:49,374 INFO L226 Difference]: Without dead ends: 1872 [2020-09-24 14:43:49,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 14:43:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2020-09-24 14:43:49,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1551. [2020-09-24 14:43:49,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1551 states. [2020-09-24 14:43:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 1870 transitions. [2020-09-24 14:43:49,673 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 1870 transitions. Word has length 255 [2020-09-24 14:43:49,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:43:49,674 INFO L479 AbstractCegarLoop]: Abstraction has 1551 states and 1870 transitions. [2020-09-24 14:43:49,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 14:43:49,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 1870 transitions. [2020-09-24 14:43:49,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-09-24 14:43:49,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:43:49,682 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:43:49,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:43:49,683 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:43:49,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:43:49,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1472439606, now seen corresponding path program 1 times [2020-09-24 14:43:49,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:43:49,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158321303] [2020-09-24 14:43:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:43:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,114 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 14:43:50,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:43:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 14:43:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-24 14:43:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:43:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 14:43:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:43:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 14:43:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 14:43:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 14:43:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-24 14:43:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 14:43:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-24 14:43:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-09-24 14:43:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-09-24 14:43:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:43:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:43:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:43:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:43:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:43:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:43:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-09-24 14:43:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-24 14:43:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-24 14:43:50,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158321303] [2020-09-24 14:43:50,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:43:50,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 14:43:50,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480443775] [2020-09-24 14:43:50,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 14:43:50,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:43:50,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 14:43:50,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-24 14:43:50,687 INFO L87 Difference]: Start difference. First operand 1551 states and 1870 transitions. Second operand 13 states. [2020-09-24 14:43:51,469 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-09-24 14:43:54,137 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-09-24 14:43:54,557 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-09-24 14:43:54,970 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-09-24 14:43:55,346 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-09-24 14:43:55,813 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-09-24 14:43:56,246 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-09-24 14:44:00,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:44:00,909 INFO L93 Difference]: Finished difference Result 4807 states and 6445 transitions. [2020-09-24 14:44:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-24 14:44:00,910 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 295 [2020-09-24 14:44:00,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:44:00,930 INFO L225 Difference]: With dead ends: 4807 [2020-09-24 14:44:00,930 INFO L226 Difference]: Without dead ends: 3413 [2020-09-24 14:44:00,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 14:44:00,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3413 states. [2020-09-24 14:44:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3413 to 2596. [2020-09-24 14:44:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2596 states. [2020-09-24 14:44:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3104 transitions. [2020-09-24 14:44:01,445 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3104 transitions. Word has length 295 [2020-09-24 14:44:01,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:44:01,446 INFO L479 AbstractCegarLoop]: Abstraction has 2596 states and 3104 transitions. [2020-09-24 14:44:01,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 14:44:01,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3104 transitions. [2020-09-24 14:44:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-09-24 14:44:01,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:44:01,459 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:44:01,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:44:01,459 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:44:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:44:01,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1825544057, now seen corresponding path program 1 times [2020-09-24 14:44:01,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:44:01,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942520822] [2020-09-24 14:44:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:44:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:44:01,880 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 14:44:01,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0