/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 true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:01:42,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:01:42,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:01:42,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:01:42,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:01:42,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:01:42,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:01:42,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:01:42,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:01:42,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:01:42,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:01:42,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:01:42,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:01:42,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:01:42,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:01:42,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:01:42,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:01:42,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:01:42,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:01:42,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:01:42,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:01:42,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:01:42,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:01:42,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:01:42,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:01:42,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:01:42,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:01:42,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:01:42,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:01:42,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:01:42,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:01:42,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:01:42,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:01:42,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:01:42,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:01:42,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:01:42,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:01:42,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:01:42,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:01:42,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:01:42,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:01:42,499 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 [2020-08-21 18:01:42,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:01:42,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:01:42,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:01:42,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:01:42,546 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:01:42,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:01:42,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:01:42,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:01:42,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:01:42,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:01:42,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:01:42,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:01:42,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:01:42,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:01:42,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:01:42,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:01:42,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:01:42,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:01:42,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:01:42,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:01:42,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:01:42,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:01:42,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:01:42,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:01:42,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:01:42,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:01:42,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:01:42,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:01:42,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:01:42,553 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:01:42,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:01:42,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:01:42,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:01:42,854 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:01:42,854 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:01:42,855 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-08-21 18:01:42,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af4b0c367/6981e6c0ddb84987b02582390c2a86b2/FLAG841b8b7ed [2020-08-21 18:01:43,476 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:01:43,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-08-21 18:01:43,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af4b0c367/6981e6c0ddb84987b02582390c2a86b2/FLAG841b8b7ed [2020-08-21 18:01:43,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af4b0c367/6981e6c0ddb84987b02582390c2a86b2 [2020-08-21 18:01:43,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:01:43,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:01:43,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:01:43,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:01:43,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:01:43,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:01:43" (1/1) ... [2020-08-21 18:01:43,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27423965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:43, skipping insertion in model container [2020-08-21 18:01:43,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:01:43" (1/1) ... [2020-08-21 18:01:43,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:01:43,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:01:44,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:01:44,310 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:01:44,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:01:44,446 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:01:44,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:44 WrapperNode [2020-08-21 18:01:44,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:01:44,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:01:44,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:01:44,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:01:44,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:44" (1/1) ... [2020-08-21 18:01:44,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:44" (1/1) ... [2020-08-21 18:01:44,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:44" (1/1) ... [2020-08-21 18:01:44,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:44" (1/1) ... [2020-08-21 18:01:44,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:44" (1/1) ... [2020-08-21 18:01:44,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:44" (1/1) ... [2020-08-21 18:01:44,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:44" (1/1) ... [2020-08-21 18:01:44,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:01:44,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:01:44,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:01:44,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:01:44,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:01:44,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:01:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:01:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:01:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:01:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:01:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:01:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:01:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:01:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 18:01:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:01:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 18:01:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:01:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:01:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:01:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:01:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:01:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:01:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 18:01:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 18:01:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 18:01:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:01:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:01:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:01:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:01:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:01:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:01:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:01:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:01:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:01:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:01:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:01:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:01:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:01:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:01:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:01:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:01:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:01:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:01:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:01:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:01:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:01:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:01:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 18:01:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:01:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:01:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:01:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:01:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:01:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:01:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 18:01:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:01:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:01:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:01:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:01:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:01:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:01:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:01:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 18:01:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:01:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:01:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:01:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:01:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 18:01:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:01:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:01:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:01:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:01:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 18:01:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 18:01:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:01:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 18:01:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:01:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:01:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:01:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:01:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:01:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:01:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:01:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:01:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:01:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:01:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:01:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:01:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:01:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:01:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:01:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:01:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:01:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:01:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:01:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:01:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:01:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:01:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:01:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:01:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:01:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:01:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:01:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:01:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:01:45,665 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:01:45,666 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:01:45,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:01:45 BoogieIcfgContainer [2020-08-21 18:01:45,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:01:45,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:01:45,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:01:45,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:01:45,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:01:43" (1/3) ... [2020-08-21 18:01:45,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6406ae41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:01:45, skipping insertion in model container [2020-08-21 18:01:45,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:44" (2/3) ... [2020-08-21 18:01:45,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6406ae41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:01:45, skipping insertion in model container [2020-08-21 18:01:45,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:01:45" (3/3) ... [2020-08-21 18:01:45,680 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2020-08-21 18:01:45,690 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:01:45,698 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:01:45,712 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:01:45,737 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:01:45,738 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:01:45,738 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:01:45,738 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:01:45,738 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:01:45,739 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:01:45,739 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:01:45,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:01:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2020-08-21 18:01:45,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 18:01:45,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:45,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:01:45,774 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:45,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:45,780 INFO L82 PathProgramCache]: Analyzing trace with hash 182694304, now seen corresponding path program 1 times [2020-08-21 18:01:45,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:45,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251796609] [2020-08-21 18:01:45,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:46,473 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:46,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:46,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:46,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:46,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:46,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:46,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:01:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:46,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:01:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:01:46,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251796609] [2020-08-21 18:01:46,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:01:46,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:01:46,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649665642] [2020-08-21 18:01:46,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:01:46,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:46,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:01:46,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:01:46,617 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 3 states. [2020-08-21 18:01:48,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:48,018 INFO L93 Difference]: Finished difference Result 360 states and 465 transitions. [2020-08-21 18:01:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:01:48,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 18:01:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:48,035 INFO L225 Difference]: With dead ends: 360 [2020-08-21 18:01:48,036 INFO L226 Difference]: Without dead ends: 194 [2020-08-21 18:01:48,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:01:48,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-21 18:01:48,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2020-08-21 18:01:48,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-21 18:01:48,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 185 transitions. [2020-08-21 18:01:48,145 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 185 transitions. Word has length 46 [2020-08-21 18:01:48,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:48,146 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 185 transitions. [2020-08-21 18:01:48,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:01:48,146 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 185 transitions. [2020-08-21 18:01:48,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 18:01:48,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:48,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:01:48,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:01:48,152 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:48,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:48,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1720628684, now seen corresponding path program 1 times [2020-08-21 18:01:48,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:48,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369172279] [2020-08-21 18:01:48,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:48,451 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:48,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:48,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:48,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:48,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:48,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:48,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:01:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:48,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:01:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:01:48,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369172279] [2020-08-21 18:01:48,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:01:48,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:01:48,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362640921] [2020-08-21 18:01:48,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:01:48,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:48,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:01:48,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:01:48,497 INFO L87 Difference]: Start difference. First operand 157 states and 185 transitions. Second operand 4 states. [2020-08-21 18:01:48,949 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:49,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:49,980 INFO L93 Difference]: Finished difference Result 289 states and 352 transitions. [2020-08-21 18:01:49,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:01:49,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 18:01:49,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:49,987 INFO L225 Difference]: With dead ends: 289 [2020-08-21 18:01:49,987 INFO L226 Difference]: Without dead ends: 178 [2020-08-21 18:01:49,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:01:49,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-21 18:01:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2020-08-21 18:01:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-21 18:01:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 173 transitions. [2020-08-21 18:01:50,066 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 173 transitions. Word has length 47 [2020-08-21 18:01:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:50,066 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 173 transitions. [2020-08-21 18:01:50,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:01:50,067 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 173 transitions. [2020-08-21 18:01:50,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 18:01:50,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:50,079 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] [2020-08-21 18:01:50,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:01:50,080 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:50,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:50,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1588538268, now seen corresponding path program 1 times [2020-08-21 18:01:50,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:50,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959020837] [2020-08-21 18:01:50,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:50,442 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:50,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:50,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:50,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:50,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:50,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:50,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:01:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:50,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:01:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:01:50,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959020837] [2020-08-21 18:01:50,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:01:50,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:01:50,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666329420] [2020-08-21 18:01:50,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:01:50,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:50,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:01:50,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:01:50,533 INFO L87 Difference]: Start difference. First operand 148 states and 173 transitions. Second operand 8 states. [2020-08-21 18:01:50,932 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:51,221 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:51,453 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:51,692 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:53,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:53,126 INFO L93 Difference]: Finished difference Result 302 states and 370 transitions. [2020-08-21 18:01:53,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:01:53,127 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 18:01:53,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:53,131 INFO L225 Difference]: With dead ends: 302 [2020-08-21 18:01:53,131 INFO L226 Difference]: Without dead ends: 178 [2020-08-21 18:01:53,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:01:53,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-21 18:01:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2020-08-21 18:01:53,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-21 18:01:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2020-08-21 18:01:53,174 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 52 [2020-08-21 18:01:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:53,175 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2020-08-21 18:01:53,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:01:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2020-08-21 18:01:53,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 18:01:53,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:53,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:01:53,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:01:53,180 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:53,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:53,181 INFO L82 PathProgramCache]: Analyzing trace with hash 265767055, now seen corresponding path program 1 times [2020-08-21 18:01:53,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:53,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033888509] [2020-08-21 18:01:53,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:53,506 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:53,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:53,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:53,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:53,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:53,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:53,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 18:01:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:53,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:53,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:53,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:53,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 18:01:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:53,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 18:01:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:01:53,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033888509] [2020-08-21 18:01:53,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:01:53,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:01:53,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118538721] [2020-08-21 18:01:53,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:01:53,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:53,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:01:53,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:01:53,588 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand 6 states. [2020-08-21 18:01:53,907 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:55,166 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:55,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:55,933 INFO L93 Difference]: Finished difference Result 413 states and 506 transitions. [2020-08-21 18:01:55,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:01:55,934 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-21 18:01:55,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:55,938 INFO L225 Difference]: With dead ends: 413 [2020-08-21 18:01:55,938 INFO L226 Difference]: Without dead ends: 289 [2020-08-21 18:01:55,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:01:55,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-08-21 18:01:55,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 246. [2020-08-21 18:01:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-21 18:01:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 276 transitions. [2020-08-21 18:01:55,990 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 276 transitions. Word has length 70 [2020-08-21 18:01:55,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:55,990 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 276 transitions. [2020-08-21 18:01:55,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:01:55,990 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 276 transitions. [2020-08-21 18:01:55,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 18:01:55,992 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:55,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:01:55,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:01:55,992 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:55,993 INFO L82 PathProgramCache]: Analyzing trace with hash 990610989, now seen corresponding path program 1 times [2020-08-21 18:01:55,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:55,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398050912] [2020-08-21 18:01:55,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:56,310 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:56,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:56,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:56,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:56,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:56,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:56,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 18:01:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:56,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:56,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:56,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:56,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:56,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:01:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:56,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 18:01:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:56,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 18:01:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:01:56,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398050912] [2020-08-21 18:01:56,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:01:56,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 18:01:56,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776269229] [2020-08-21 18:01:56,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:01:56,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:56,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:01:56,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:01:56,467 INFO L87 Difference]: Start difference. First operand 246 states and 276 transitions. Second operand 12 states. [2020-08-21 18:01:56,963 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:57,288 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:57,543 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:57,774 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:58,374 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:59,393 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:59,705 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:01:59,970 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:02:00,241 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:00,562 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:02:00,820 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:02:02,320 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:02:02,672 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:02:03,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:02:03,616 INFO L93 Difference]: Finished difference Result 866 states and 1086 transitions. [2020-08-21 18:02:03,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 18:02:03,616 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-21 18:02:03,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:02:03,622 INFO L225 Difference]: With dead ends: 866 [2020-08-21 18:02:03,622 INFO L226 Difference]: Without dead ends: 644 [2020-08-21 18:02:03,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 18:02:03,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-08-21 18:02:03,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 582. [2020-08-21 18:02:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-08-21 18:02:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 672 transitions. [2020-08-21 18:02:03,759 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 672 transitions. Word has length 84 [2020-08-21 18:02:03,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:02:03,759 INFO L479 AbstractCegarLoop]: Abstraction has 582 states and 672 transitions. [2020-08-21 18:02:03,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:02:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 672 transitions. [2020-08-21 18:02:03,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 18:02:03,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:02:03,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:02:03,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:02:03,765 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:02:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:02:03,766 INFO L82 PathProgramCache]: Analyzing trace with hash -295396841, now seen corresponding path program 1 times [2020-08-21 18:02:03,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:02:03,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958716246] [2020-08-21 18:02:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:02:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,052 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:02:04,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:02:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:02:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:02:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:02:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:02:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:02:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:02:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:02:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:02:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:02:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 18:02:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 18:02:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 18:02:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:02:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 18:02:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 18:02:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 18:02:04,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958716246] [2020-08-21 18:02:04,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:02:04,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 18:02:04,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3260212] [2020-08-21 18:02:04,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 18:02:04,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:02:04,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 18:02:04,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:02:04,392 INFO L87 Difference]: Start difference. First operand 582 states and 672 transitions. Second operand 13 states. [2020-08-21 18:02:05,161 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:02:05,878 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:02:06,425 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:02:06,693 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:02:06,974 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:07,234 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:07,488 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:02:07,773 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:02:08,058 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:08,340 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:10,295 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:02:10,530 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:02:10,761 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:02:10,997 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:02:11,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:02:11,641 INFO L93 Difference]: Finished difference Result 1164 states and 1458 transitions. [2020-08-21 18:02:11,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 18:02:11,641 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 156 [2020-08-21 18:02:11,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:02:11,647 INFO L225 Difference]: With dead ends: 1164 [2020-08-21 18:02:11,647 INFO L226 Difference]: Without dead ends: 606 [2020-08-21 18:02:11,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 18:02:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-08-21 18:02:11,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 533. [2020-08-21 18:02:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-08-21 18:02:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 619 transitions. [2020-08-21 18:02:11,741 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 619 transitions. Word has length 156 [2020-08-21 18:02:11,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:02:11,742 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 619 transitions. [2020-08-21 18:02:11,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 18:02:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 619 transitions. [2020-08-21 18:02:11,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-21 18:02:11,745 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:02:11,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:02:11,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:02:11,746 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:02:11,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:02:11,746 INFO L82 PathProgramCache]: Analyzing trace with hash -935545817, now seen corresponding path program 1 times [2020-08-21 18:02:11,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:02:11,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820143441] [2020-08-21 18:02:11,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:02:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,020 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:02:12,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:02:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:02:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:02:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:02:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:02:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:02:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:02:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:02:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:02:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 18:02:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:02:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:02:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 18:02:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 18:02:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 18:02:12,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820143441] [2020-08-21 18:02:12,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:02:12,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 18:02:12,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946002425] [2020-08-21 18:02:12,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:02:12,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:02:12,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:02:12,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:02:12,303 INFO L87 Difference]: Start difference. First operand 533 states and 619 transitions. Second operand 12 states. [2020-08-21 18:02:12,876 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:02:13,103 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:02:13,326 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:02:13,956 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:02:14,190 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:02:14,414 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:02:15,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:02:15,611 INFO L93 Difference]: Finished difference Result 951 states and 1145 transitions. [2020-08-21 18:02:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:02:15,611 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 148 [2020-08-21 18:02:15,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:02:15,615 INFO L225 Difference]: With dead ends: 951 [2020-08-21 18:02:15,615 INFO L226 Difference]: Without dead ends: 442 [2020-08-21 18:02:15,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:02:15,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-21 18:02:15,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 416. [2020-08-21 18:02:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-21 18:02:15,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 483 transitions. [2020-08-21 18:02:15,696 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 483 transitions. Word has length 148 [2020-08-21 18:02:15,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:02:15,696 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 483 transitions. [2020-08-21 18:02:15,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:02:15,696 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 483 transitions. [2020-08-21 18:02:15,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 18:02:15,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:02:15,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:02:15,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:02:15,700 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:02:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:02:15,700 INFO L82 PathProgramCache]: Analyzing trace with hash 2041878082, now seen corresponding path program 1 times [2020-08-21 18:02:15,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:02:15,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663179368] [2020-08-21 18:02:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:02:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:15,978 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:02:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:02:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:02:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:02:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:02:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:02:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:02:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:02:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:02:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:02:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:02:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 18:02:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 18:02:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:02:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-21 18:02:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-21 18:02:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-21 18:02:16,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663179368] [2020-08-21 18:02:16,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:02:16,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 18:02:16,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337526058] [2020-08-21 18:02:16,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 18:02:16,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:02:16,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 18:02:16,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:02:16,208 INFO L87 Difference]: Start difference. First operand 416 states and 483 transitions. Second operand 13 states. [2020-08-21 18:02:16,699 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:02:17,412 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:02:18,559 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:02:18,856 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:02:19,125 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:02:19,367 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:19,671 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:19,920 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:21,031 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:02:21,259 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:02:21,512 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:21,742 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:22,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:02:22,562 INFO L93 Difference]: Finished difference Result 1172 states and 1412 transitions. [2020-08-21 18:02:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 18:02:22,563 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-21 18:02:22,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:02:22,568 INFO L225 Difference]: With dead ends: 1172 [2020-08-21 18:02:22,568 INFO L226 Difference]: Without dead ends: 780 [2020-08-21 18:02:22,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 18:02:22,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-08-21 18:02:22,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 738. [2020-08-21 18:02:22,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-08-21 18:02:22,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 848 transitions. [2020-08-21 18:02:22,730 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 848 transitions. Word has length 152 [2020-08-21 18:02:22,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:02:22,733 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 848 transitions. [2020-08-21 18:02:22,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 18:02:22,733 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 848 transitions. [2020-08-21 18:02:22,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 18:02:22,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:02:22,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:02:22,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:02:22,737 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:02:22,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:02:22,737 INFO L82 PathProgramCache]: Analyzing trace with hash -508382690, now seen corresponding path program 1 times [2020-08-21 18:02:22,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:02:22,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120644908] [2020-08-21 18:02:22,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:02:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,039 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:02:23,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:02:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:02:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:02:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:02:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:02:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:02:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:02:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 18:02:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:02:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:02:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:02:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 18:02:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 18:02:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:02:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 18:02:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 18:02:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-21 18:02:23,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120644908] [2020-08-21 18:02:23,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:02:23,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 18:02:23,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044088424] [2020-08-21 18:02:23,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 18:02:23,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:02:23,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 18:02:23,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:02:23,470 INFO L87 Difference]: Start difference. First operand 738 states and 848 transitions. Second operand 18 states. [2020-08-21 18:02:24,143 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:02:24,473 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:24,728 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:24,979 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:25,581 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:02:26,720 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:27,037 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:27,319 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:27,604 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:27,930 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:28,203 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:28,772 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 18:02:29,333 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 18:02:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:02:31,392 INFO L93 Difference]: Finished difference Result 1398 states and 1701 transitions. [2020-08-21 18:02:31,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 18:02:31,393 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 156 [2020-08-21 18:02:31,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:02:31,398 INFO L225 Difference]: With dead ends: 1398 [2020-08-21 18:02:31,398 INFO L226 Difference]: Without dead ends: 820 [2020-08-21 18:02:31,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2020-08-21 18:02:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-08-21 18:02:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 700. [2020-08-21 18:02:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-21 18:02:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 801 transitions. [2020-08-21 18:02:31,527 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 801 transitions. Word has length 156 [2020-08-21 18:02:31,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:02:31,527 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 801 transitions. [2020-08-21 18:02:31,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 18:02:31,527 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 801 transitions. [2020-08-21 18:02:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 18:02:31,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:02:31,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:02:31,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:02:31,530 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:02:31,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:02:31,531 INFO L82 PathProgramCache]: Analyzing trace with hash -620136546, now seen corresponding path program 2 times [2020-08-21 18:02:31,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:02:31,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673217727] [2020-08-21 18:02:31,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:02:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:31,880 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:02:31,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:02:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:31,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:02:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:31,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:02:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:31,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:02:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:31,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:02:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:31,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:02:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:31,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:02:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:31,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:31,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:31,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:31,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:31,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:31,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:02:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:31,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:32,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:32,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:02:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:32,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:02:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:32,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:32,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 18:02:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:32,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 18:02:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:32,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 18:02:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:32,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:32,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:32,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:02:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:32,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 18:02:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:32,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 18:02:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-21 18:02:32,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673217727] [2020-08-21 18:02:32,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:02:32,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 18:02:32,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717081541] [2020-08-21 18:02:32,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 18:02:32,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:02:32,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 18:02:32,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:02:32,131 INFO L87 Difference]: Start difference. First operand 700 states and 801 transitions. Second operand 11 states. [2020-08-21 18:02:32,578 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:02:34,497 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:02:34,783 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:02:35,048 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:02:35,442 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:02:35,714 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:02:36,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:02:36,089 INFO L93 Difference]: Finished difference Result 826 states and 1019 transitions. [2020-08-21 18:02:36,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 18:02:36,090 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 156 [2020-08-21 18:02:36,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:02:36,095 INFO L225 Difference]: With dead ends: 826 [2020-08-21 18:02:36,096 INFO L226 Difference]: Without dead ends: 823 [2020-08-21 18:02:36,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-21 18:02:36,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-08-21 18:02:36,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 700. [2020-08-21 18:02:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-21 18:02:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 799 transitions. [2020-08-21 18:02:36,233 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 799 transitions. Word has length 156 [2020-08-21 18:02:36,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:02:36,236 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 799 transitions. [2020-08-21 18:02:36,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 18:02:36,236 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 799 transitions. [2020-08-21 18:02:36,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-21 18:02:36,240 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:02:36,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:02:36,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:02:36,240 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:02:36,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:02:36,241 INFO L82 PathProgramCache]: Analyzing trace with hash 350169461, now seen corresponding path program 1 times [2020-08-21 18:02:36,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:02:36,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367081760] [2020-08-21 18:02:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:02:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,622 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:02:36,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:02:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:02:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:02:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:02:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:02:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:02:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:02:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:02:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:02:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:02:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 18:02:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 18:02:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:02:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:02:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:02:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:02:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 18:02:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-21 18:02:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:02:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 18:02:36,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367081760] [2020-08-21 18:02:36,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:02:36,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 18:02:36,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115537781] [2020-08-21 18:02:36,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:02:36,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:02:36,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:02:36,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:02:36,865 INFO L87 Difference]: Start difference. First operand 700 states and 799 transitions. Second operand 12 states. [2020-08-21 18:02:37,700 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:02:38,612 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:02:39,192 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:02:39,480 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:02:39,744 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:02:40,004 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:02:40,307 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:02:40,589 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:02:42,351 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:02:42,629 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188