/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:50:45,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:50:45,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:50:45,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:50:45,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:50:45,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:50:45,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:50:45,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:50:45,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:50:45,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:50:45,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:50:45,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:50:45,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:50:45,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:50:45,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:50:45,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:50:45,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:50:45,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:50:45,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:50:45,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:50:45,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:50:45,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:50:45,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:50:45,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:50:45,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:50:45,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:50:45,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:50:45,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:50:45,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:50:45,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:50:45,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:50:45,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:50:45,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:50:45,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:50:45,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:50:45,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:50:45,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:50:45,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:50:45,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:50:45,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:50:45,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:50:45,583 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 [2020-08-19 01:50:45,628 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:50:45,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:50:45,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:50:45,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:50:45,630 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:50:45,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:50:45,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:50:45,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:50:45,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:50:45,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:50:45,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:50:45,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:50:45,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:50:45,632 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:50:45,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:50:45,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:50:45,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:50:45,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:50:45,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:50:45,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:50:45,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:50:45,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:50:45,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:50:45,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:50:45,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:50:45,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:50:45,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:50:45,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:50:45,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:50:45,637 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:50:45,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:50:45,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:50:45,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:50:45,961 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:50:45,961 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:50:45,962 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-08-19 01:50:46,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87140b077/3923bb0794b24261b170708e6d9e215c/FLAG48ca85514 [2020-08-19 01:50:46,557 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:50:46,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-08-19 01:50:46,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87140b077/3923bb0794b24261b170708e6d9e215c/FLAG48ca85514 [2020-08-19 01:50:46,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87140b077/3923bb0794b24261b170708e6d9e215c [2020-08-19 01:50:46,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:50:46,787 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:50:46,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:50:46,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:50:46,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:50:46,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:50:46" (1/1) ... [2020-08-19 01:50:46,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55497fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:46, skipping insertion in model container [2020-08-19 01:50:46,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:50:46" (1/1) ... [2020-08-19 01:50:46,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:50:46,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:50:47,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:50:47,314 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:50:47,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:50:47,466 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:50:47,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:47 WrapperNode [2020-08-19 01:50:47,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:50:47,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:50:47,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:50:47,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:50:47,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:47" (1/1) ... [2020-08-19 01:50:47,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:47" (1/1) ... [2020-08-19 01:50:47,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:47" (1/1) ... [2020-08-19 01:50:47,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:47" (1/1) ... [2020-08-19 01:50:47,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:47" (1/1) ... [2020-08-19 01:50:47,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:47" (1/1) ... [2020-08-19 01:50:47,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:47" (1/1) ... [2020-08-19 01:50:47,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:50:47,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:50:47,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:50:47,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:50:47,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:47" (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 [2020-08-19 01:50:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:50:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:50:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:50:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:50:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:50:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:50:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:50:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:50:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:50:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:50:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:50:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:50:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:50:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:50:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:50:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:50:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:50:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:50:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 01:50:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:50:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:50:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:50:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:50:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:50:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:50:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:50:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 01:50:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:50:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:50:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:50:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:50:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 01:50:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:50:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 01:50:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:50:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:50:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:50:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:50:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:50:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:50:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 01:50:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 01:50:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:50:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:50:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:50:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:50:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:50:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:50:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:50:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:50:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:50:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:50:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:50:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:50:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:50:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:50:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:50:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:50:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:50:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:50:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:50:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:50:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:50:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:50:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:50:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:50:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:50:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:50:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:50:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:50:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:50:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:50:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:50:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:50:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:50:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:50:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:50:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:50:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:50:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:50:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 01:50:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:50:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:50:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:50:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:50:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 01:50:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:50:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:50:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 01:50:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:50:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:50:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:50:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:50:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 01:50:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 01:50:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:50:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 01:50:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:50:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:50:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:50:48,730 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:50:48,730 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:50:48,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:50:48 BoogieIcfgContainer [2020-08-19 01:50:48,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:50:48,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:50:48,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:50:48,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:50:48,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:50:46" (1/3) ... [2020-08-19 01:50:48,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4858ff6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:50:48, skipping insertion in model container [2020-08-19 01:50:48,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:47" (2/3) ... [2020-08-19 01:50:48,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4858ff6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:50:48, skipping insertion in model container [2020-08-19 01:50:48,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:50:48" (3/3) ... [2020-08-19 01:50:48,744 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2020-08-19 01:50:48,755 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:50:48,763 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:50:48,778 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:50:48,804 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:50:48,804 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:50:48,804 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:50:48,804 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:50:48,805 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:50:48,805 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:50:48,805 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:50:48,805 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:50:48,829 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-19 01:50:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 01:50:48,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:48,840 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] [2020-08-19 01:50:48,841 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:48,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:48,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1593418819, now seen corresponding path program 1 times [2020-08-19 01:50:48,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:48,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300704269] [2020-08-19 01:50:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,513 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:49,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:50:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:50:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:50:49,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300704269] [2020-08-19 01:50:49,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:50:49,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:50:49,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045764458] [2020-08-19 01:50:49,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:50:49,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:49,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:50:49,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:50:49,684 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 3 states. [2020-08-19 01:50:51,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:51,014 INFO L93 Difference]: Finished difference Result 365 states and 474 transitions. [2020-08-19 01:50:51,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:50:51,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 01:50:51,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:51,031 INFO L225 Difference]: With dead ends: 365 [2020-08-19 01:50:51,031 INFO L226 Difference]: Without dead ends: 197 [2020-08-19 01:50:51,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:50:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-08-19 01:50:51,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-08-19 01:50:51,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-19 01:50:51,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-08-19 01:50:51,151 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 46 [2020-08-19 01:50:51,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:51,152 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-08-19 01:50:51,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:50:51,152 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-08-19 01:50:51,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 01:50:51,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:51,156 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] [2020-08-19 01:50:51,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:50:51,157 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:51,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:51,157 INFO L82 PathProgramCache]: Analyzing trace with hash 261795935, now seen corresponding path program 1 times [2020-08-19 01:50:51,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:51,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839646758] [2020-08-19 01:50:51,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:51,448 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:51,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:51,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:51,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:51,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:51,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:51,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:50:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:51,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:50:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:50:51,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839646758] [2020-08-19 01:50:51,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:50:51,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:50:51,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774413277] [2020-08-19 01:50:51,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:50:51,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:51,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:50:51,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:50:51,498 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 4 states. [2020-08-19 01:50:51,973 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:53,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:53,030 INFO L93 Difference]: Finished difference Result 292 states and 357 transitions. [2020-08-19 01:50:53,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:50:53,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 01:50:53,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:53,035 INFO L225 Difference]: With dead ends: 292 [2020-08-19 01:50:53,036 INFO L226 Difference]: Without dead ends: 181 [2020-08-19 01:50:53,037 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 [2020-08-19 01:50:53,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-19 01:50:53,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2020-08-19 01:50:53,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-19 01:50:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-08-19 01:50:53,076 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 47 [2020-08-19 01:50:53,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:53,077 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-08-19 01:50:53,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:50:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-08-19 01:50:53,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 01:50:53,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:53,079 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] [2020-08-19 01:50:53,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:50:53,080 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:53,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:53,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1299589925, now seen corresponding path program 1 times [2020-08-19 01:50:53,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:53,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237996710] [2020-08-19 01:50:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:53,397 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:53,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:53,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:53,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:53,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:53,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:53,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:50:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:53,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:50:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:50:53,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237996710] [2020-08-19 01:50:53,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:50:53,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:50:53,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114156666] [2020-08-19 01:50:53,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:50:53,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:53,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:50:53,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:50:53,497 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 8 states. [2020-08-19 01:50:53,856 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:54,162 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:54,420 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:54,676 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:55,399 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:57,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:57,726 INFO L93 Difference]: Finished difference Result 510 states and 633 transitions. [2020-08-19 01:50:57,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:50:57,727 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 01:50:57,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:57,732 INFO L225 Difference]: With dead ends: 510 [2020-08-19 01:50:57,732 INFO L226 Difference]: Without dead ends: 384 [2020-08-19 01:50:57,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:50:57,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-08-19 01:50:57,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 318. [2020-08-19 01:50:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-08-19 01:50:57,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 386 transitions. [2020-08-19 01:50:57,825 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 386 transitions. Word has length 51 [2020-08-19 01:50:57,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:57,826 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 386 transitions. [2020-08-19 01:50:57,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:50:57,826 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 386 transitions. [2020-08-19 01:50:57,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 01:50:57,829 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:57,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:57,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:50:57,830 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:57,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:57,830 INFO L82 PathProgramCache]: Analyzing trace with hash -848411279, now seen corresponding path program 1 times [2020-08-19 01:50:57,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:57,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564920811] [2020-08-19 01:50:57,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:58,124 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:58,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:58,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:58,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:58,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:58,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:50:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:58,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:50:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:58,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:50:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:50:58,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564920811] [2020-08-19 01:50:58,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:50:58,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:50:58,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777754147] [2020-08-19 01:50:58,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:50:58,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:58,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:50:58,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:50:58,263 INFO L87 Difference]: Start difference. First operand 318 states and 386 transitions. Second operand 12 states. [2020-08-19 01:50:58,669 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:58,964 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:59,211 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:59,459 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:00,026 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:00,836 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:01,246 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:51:01,588 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:51:01,833 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:51:02,142 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:51:02,517 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:51:02,940 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:51:03,377 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:05,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:51:05,724 INFO L93 Difference]: Finished difference Result 1305 states and 1782 transitions. [2020-08-19 01:51:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 01:51:05,726 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 01:51:05,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:51:05,741 INFO L225 Difference]: With dead ends: 1305 [2020-08-19 01:51:05,741 INFO L226 Difference]: Without dead ends: 1011 [2020-08-19 01:51:05,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 01:51:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-08-19 01:51:06,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 910. [2020-08-19 01:51:06,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-19 01:51:06,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1164 transitions. [2020-08-19 01:51:06,016 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1164 transitions. Word has length 57 [2020-08-19 01:51:06,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:51:06,017 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1164 transitions. [2020-08-19 01:51:06,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:51:06,017 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1164 transitions. [2020-08-19 01:51:06,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 01:51:06,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:51:06,021 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] [2020-08-19 01:51:06,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:51:06,022 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:51:06,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:51:06,022 INFO L82 PathProgramCache]: Analyzing trace with hash -533846889, now seen corresponding path program 1 times [2020-08-19 01:51:06,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:51:06,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310605997] [2020-08-19 01:51:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:51:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:06,272 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:51:06,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:51:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:06,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:51:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:06,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:51:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:06,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:51:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:06,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:51:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:06,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:51:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:51:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:06,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:51:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:06,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:51:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:51:06,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310605997] [2020-08-19 01:51:06,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:51:06,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:51:06,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92654960] [2020-08-19 01:51:06,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:51:06,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:51:06,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:51:06,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:51:06,385 INFO L87 Difference]: Start difference. First operand 910 states and 1164 transitions. Second operand 6 states. [2020-08-19 01:51:06,648 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:51:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:51:08,727 INFO L93 Difference]: Finished difference Result 2165 states and 2945 transitions. [2020-08-19 01:51:08,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 01:51:08,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 01:51:08,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:51:08,742 INFO L225 Difference]: With dead ends: 2165 [2020-08-19 01:51:08,743 INFO L226 Difference]: Without dead ends: 1279 [2020-08-19 01:51:08,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:51:08,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-08-19 01:51:08,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1192. [2020-08-19 01:51:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-08-19 01:51:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1486 transitions. [2020-08-19 01:51:08,960 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1486 transitions. Word has length 61 [2020-08-19 01:51:08,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:51:08,961 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1486 transitions. [2020-08-19 01:51:08,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:51:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1486 transitions. [2020-08-19 01:51:08,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 01:51:08,964 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:51:08,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:51:08,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:51:08,964 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:51:08,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:51:08,965 INFO L82 PathProgramCache]: Analyzing trace with hash 2051159117, now seen corresponding path program 1 times [2020-08-19 01:51:08,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:51:08,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682407588] [2020-08-19 01:51:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:51:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:09,250 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:51:09,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:51:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:09,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:51:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:09,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:51:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:09,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:51:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:09,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:51:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:09,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:51:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:09,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:51:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:09,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:51:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:09,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:09,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:09,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:51:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:09,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 01:51:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:09,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 01:51:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 01:51:09,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682407588] [2020-08-19 01:51:09,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:51:09,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:51:09,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086607151] [2020-08-19 01:51:09,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:51:09,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:51:09,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:51:09,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:51:09,393 INFO L87 Difference]: Start difference. First operand 1192 states and 1486 transitions. Second operand 10 states. [2020-08-19 01:51:09,904 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 01:51:10,438 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:51:12,781 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:51:15,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:51:15,266 INFO L93 Difference]: Finished difference Result 2279 states and 2961 transitions. [2020-08-19 01:51:15,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 01:51:15,267 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 01:51:15,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:51:15,274 INFO L225 Difference]: With dead ends: 2279 [2020-08-19 01:51:15,274 INFO L226 Difference]: Without dead ends: 1402 [2020-08-19 01:51:15,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-19 01:51:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2020-08-19 01:51:15,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1305. [2020-08-19 01:51:15,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-08-19 01:51:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1607 transitions. [2020-08-19 01:51:15,605 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1607 transitions. Word has length 88 [2020-08-19 01:51:15,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:51:15,607 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1607 transitions. [2020-08-19 01:51:15,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:51:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1607 transitions. [2020-08-19 01:51:15,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 01:51:15,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:51:15,615 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] [2020-08-19 01:51:15,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:51:15,616 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:51:15,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:51:15,616 INFO L82 PathProgramCache]: Analyzing trace with hash 2121665403, now seen corresponding path program 1 times [2020-08-19 01:51:15,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:51:15,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922605590] [2020-08-19 01:51:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:51:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:15,878 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:51:15,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:51:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:15,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:51:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:15,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:51:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:15,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:51:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:15,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:51:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:15,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:51:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:15,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:15,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:15,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:15,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:51:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:51:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:51:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 01:51:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 01:51:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:51:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 01:51:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-19 01:51:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 01:51:16,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922605590] [2020-08-19 01:51:16,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:51:16,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:51:16,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136356195] [2020-08-19 01:51:16,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:51:16,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:51:16,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:51:16,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:51:16,087 INFO L87 Difference]: Start difference. First operand 1305 states and 1607 transitions. Second operand 10 states. [2020-08-19 01:51:16,973 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:17,260 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:51:17,497 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:17,748 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:18,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:51:18,921 INFO L93 Difference]: Finished difference Result 2739 states and 3614 transitions. [2020-08-19 01:51:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:51:18,923 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 146 [2020-08-19 01:51:18,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:51:18,932 INFO L225 Difference]: With dead ends: 2739 [2020-08-19 01:51:18,932 INFO L226 Difference]: Without dead ends: 1458 [2020-08-19 01:51:18,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:51:18,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2020-08-19 01:51:19,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1335. [2020-08-19 01:51:19,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-08-19 01:51:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1641 transitions. [2020-08-19 01:51:19,224 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1641 transitions. Word has length 146 [2020-08-19 01:51:19,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:51:19,226 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 1641 transitions. [2020-08-19 01:51:19,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:51:19,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1641 transitions. [2020-08-19 01:51:19,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 01:51:19,230 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:51:19,230 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] [2020-08-19 01:51:19,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:51:19,231 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:51:19,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:51:19,231 INFO L82 PathProgramCache]: Analyzing trace with hash 502690489, now seen corresponding path program 1 times [2020-08-19 01:51:19,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:51:19,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270018427] [2020-08-19 01:51:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:51:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,491 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:51:19,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:51:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:51:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:51:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:51:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:51:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:51:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:51:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:51:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:51:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 01:51:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 01:51:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:51:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 01:51:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-19 01:51:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 01:51:19,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270018427] [2020-08-19 01:51:19,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:51:19,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:51:19,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202041708] [2020-08-19 01:51:19,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:51:19,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:51:19,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:51:19,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:51:19,733 INFO L87 Difference]: Start difference. First operand 1335 states and 1641 transitions. Second operand 12 states. [2020-08-19 01:51:20,193 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:20,420 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:20,627 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:21,396 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:21,660 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:21,904 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:23,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:51:23,190 INFO L93 Difference]: Finished difference Result 2461 states and 3129 transitions. [2020-08-19 01:51:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:51:23,191 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 146 [2020-08-19 01:51:23,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:51:23,197 INFO L225 Difference]: With dead ends: 2461 [2020-08-19 01:51:23,198 INFO L226 Difference]: Without dead ends: 1150 [2020-08-19 01:51:23,202 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 [2020-08-19 01:51:23,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-08-19 01:51:23,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1094. [2020-08-19 01:51:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1094 states. [2020-08-19 01:51:23,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1326 transitions. [2020-08-19 01:51:23,465 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1326 transitions. Word has length 146 [2020-08-19 01:51:23,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:51:23,466 INFO L479 AbstractCegarLoop]: Abstraction has 1094 states and 1326 transitions. [2020-08-19 01:51:23,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:51:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1326 transitions. [2020-08-19 01:51:23,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 01:51:23,471 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:51:23,471 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] [2020-08-19 01:51:23,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:51:23,472 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:51:23,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:51:23,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1752033202, now seen corresponding path program 1 times [2020-08-19 01:51:23,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:51:23,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361789499] [2020-08-19 01:51:23,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:51:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,728 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:51:23,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:51:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:51:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:51:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:51:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:51:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:51:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:51:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:51:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:51:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:51:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 01:51:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:23,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 01:51:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:24,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:24,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:51:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:24,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 01:51:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:24,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 01:51:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-19 01:51:24,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361789499] [2020-08-19 01:51:24,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:51:24,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 01:51:24,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137222579] [2020-08-19 01:51:24,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:51:24,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:51:24,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:51:24,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:51:24,144 INFO L87 Difference]: Start difference. First operand 1094 states and 1326 transitions. Second operand 15 states. [2020-08-19 01:51:24,780 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:51:25,721 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:27,327 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:27,622 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:27,881 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:28,133 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:51:28,406 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:51:28,655 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:51:29,188 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-19 01:51:29,690 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-19 01:51:30,453 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:30,689 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:30,948 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:51:31,194 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:51:32,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:51:32,341 INFO L93 Difference]: Finished difference Result 3035 states and 3816 transitions. [2020-08-19 01:51:32,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 01:51:32,341 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-08-19 01:51:32,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:51:32,354 INFO L225 Difference]: With dead ends: 3035 [2020-08-19 01:51:32,354 INFO L226 Difference]: Without dead ends: 1965 [2020-08-19 01:51:32,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 01:51:32,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-08-19 01:51:32,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1863. [2020-08-19 01:51:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1863 states. [2020-08-19 01:51:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2212 transitions. [2020-08-19 01:51:32,680 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2212 transitions. Word has length 150 [2020-08-19 01:51:32,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:51:32,682 INFO L479 AbstractCegarLoop]: Abstraction has 1863 states and 2212 transitions. [2020-08-19 01:51:32,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 01:51:32,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2212 transitions. [2020-08-19 01:51:32,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 01:51:32,688 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:51:32,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:51:32,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:51:32,689 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:51:32,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:51:32,689 INFO L82 PathProgramCache]: Analyzing trace with hash -547203946, now seen corresponding path program 1 times [2020-08-19 01:51:32,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:51:32,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454259467] [2020-08-19 01:51:32,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:51:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,010 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:51:33,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:51:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:51:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:51:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:51:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:51:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:51:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:51:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:51:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:51:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:51:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 01:51:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 01:51:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 01:51:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:51:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-19 01:51:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-19 01:51:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-19 01:51:33,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454259467] [2020-08-19 01:51:33,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:51:33,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 01:51:33,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028613610] [2020-08-19 01:51:33,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:51:33,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:51:33,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:51:33,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:51:33,185 INFO L87 Difference]: Start difference. First operand 1863 states and 2212 transitions. Second operand 11 states. [2020-08-19 01:51:33,525 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:51:35,710 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:35,983 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:36,253 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:36,652 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:51:36,988 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:37,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:51:37,420 INFO L93 Difference]: Finished difference Result 2180 states and 2767 transitions. [2020-08-19 01:51:37,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 01:51:37,421 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 154 [2020-08-19 01:51:37,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:51:37,434 INFO L225 Difference]: With dead ends: 2180 [2020-08-19 01:51:37,434 INFO L226 Difference]: Without dead ends: 2177 [2020-08-19 01:51:37,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-19 01:51:37,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2020-08-19 01:51:37,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 1863. [2020-08-19 01:51:37,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1863 states. [2020-08-19 01:51:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2202 transitions. [2020-08-19 01:51:37,737 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2202 transitions. Word has length 154 [2020-08-19 01:51:37,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:51:37,737 INFO L479 AbstractCegarLoop]: Abstraction has 1863 states and 2202 transitions. [2020-08-19 01:51:37,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:51:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2202 transitions. [2020-08-19 01:51:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-19 01:51:37,743 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:51:37,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:51:37,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:51:37,744 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:51:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:51:37,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1229554551, now seen corresponding path program 1 times [2020-08-19 01:51:37,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:51:37,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758282137] [2020-08-19 01:51:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:51:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,036 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:51:38,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:51:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:51:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:51:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:51:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:51:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:51:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:51:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:51:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:51:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:51:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 01:51:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 01:51:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:51:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:51:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-19 01:51:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-19 01:51:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 01:51:38,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758282137] [2020-08-19 01:51:38,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:51:38,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:51:38,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176302799] [2020-08-19 01:51:38,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:51:38,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:51:38,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:51:38,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:51:38,270 INFO L87 Difference]: Start difference. First operand 1863 states and 2202 transitions. Second operand 12 states. [2020-08-19 01:51:38,649 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:39,558 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:51:39,818 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:51:40,060 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:51:40,277 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:51:40,600 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:51:40,837 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:41,750 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:42,054 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:51:42,335 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190