/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:02:58,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:02:58,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:02:58,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:02:58,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:02:58,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:02:58,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:02:58,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:02:58,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:02:58,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:02:58,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:02:58,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:02:58,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:02:58,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:02:58,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:02:58,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:02:58,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:02:58,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:02:58,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:02:58,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:02:58,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:02:58,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:02:58,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:02:58,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:02:58,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:02:58,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:02:58,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:02:58,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:02:58,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:02:58,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:02:58,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:02:58,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:02:58,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:02:58,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:02:58,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:02:58,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:02:58,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:02:58,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:02:58,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:02:58,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:02:58,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:02:58,605 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 [2020-08-18 12:02:58,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:02:58,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:02:58,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:02:58,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:02:58,629 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:02:58,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:02:58,629 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:02:58,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:02:58,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:02:58,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:02:58,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:02:58,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:02:58,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:02:58,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:02:58,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:02:58,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:02:58,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:02:58,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:02:58,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:02:58,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:02:58,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:02:58,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:02:58,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:02:58,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:02:58,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:02:58,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:02:58,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:02:58,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:02:58,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:02:58,634 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:02:58,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:02:58,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:02:58,965 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:02:58,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:02:58,967 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:02:58,967 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c [2020-08-18 12:02:59,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b576e2b68/9fb3afedeb194d2f9bb341d1ad1ca460/FLAGfc2e1dd8f [2020-08-18 12:02:59,545 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:02:59,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c [2020-08-18 12:02:59,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b576e2b68/9fb3afedeb194d2f9bb341d1ad1ca460/FLAGfc2e1dd8f [2020-08-18 12:02:59,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b576e2b68/9fb3afedeb194d2f9bb341d1ad1ca460 [2020-08-18 12:02:59,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:02:59,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:02:59,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:02:59,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:02:59,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:02:59,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:02:59" (1/1) ... [2020-08-18 12:02:59,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc73a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:02:59, skipping insertion in model container [2020-08-18 12:02:59,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:02:59" (1/1) ... [2020-08-18 12:02:59,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:02:59,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:03:00,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:03:00,301 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:03:00,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:03:00,458 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:03:00,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:00 WrapperNode [2020-08-18 12:03:00,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:03:00,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:03:00,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:03:00,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:03:00,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:00" (1/1) ... [2020-08-18 12:03:00,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:00" (1/1) ... [2020-08-18 12:03:00,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:00" (1/1) ... [2020-08-18 12:03:00,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:00" (1/1) ... [2020-08-18 12:03:00,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:00" (1/1) ... [2020-08-18 12:03:00,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:00" (1/1) ... [2020-08-18 12:03:00,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:00" (1/1) ... [2020-08-18 12:03:00,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:03:00,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:03:00,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:03:00,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:03:00,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:00" (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 [2020-08-18 12:03:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:03:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:03:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 12:03:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 12:03:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 12:03:00,621 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 12:03:00,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 12:03:00,621 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 12:03:00,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 12:03:00,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 12:03:00,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 12:03:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 12:03:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 12:03:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 12:03:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 12:03:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 12:03:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 12:03:00,623 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:03:00,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 12:03:00,623 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 12:03:00,623 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 12:03:00,623 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 12:03:00,623 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 12:03:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 12:03:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 12:03:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 12:03:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 12:03:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 12:03:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 12:03:00,625 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 12:03:00,625 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 12:03:00,625 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 12:03:00,625 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 12:03:00,625 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 12:03:00,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 12:03:00,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 12:03:00,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 12:03:00,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 12:03:00,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 12:03:00,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 12:03:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:03:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:03:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 12:03:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 12:03:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 12:03:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 12:03:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 12:03:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 12:03:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 12:03:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 12:03:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:03:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 12:03:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 12:03:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 12:03:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 12:03:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 12:03:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 12:03:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 12:03:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 12:03:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 12:03:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 12:03:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 12:03:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 12:03:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 12:03:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 12:03:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 12:03:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:03:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 12:03:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 12:03:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 12:03:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 12:03:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 12:03:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 12:03:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 12:03:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 12:03:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 12:03:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:03:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:03:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 12:03:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:03:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 12:03:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:03:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 12:03:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 12:03:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:03:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 12:03:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 12:03:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:03:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 12:03:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 12:03:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 12:03:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:03:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 12:03:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:03:01,807 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:03:01,808 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 12:03:01,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:03:01 BoogieIcfgContainer [2020-08-18 12:03:01,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:03:01,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:03:01,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:03:01,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:03:01,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:02:59" (1/3) ... [2020-08-18 12:03:01,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fee3c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:03:01, skipping insertion in model container [2020-08-18 12:03:01,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:00" (2/3) ... [2020-08-18 12:03:01,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fee3c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:03:01, skipping insertion in model container [2020-08-18 12:03:01,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:03:01" (3/3) ... [2020-08-18 12:03:01,822 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product37.cil.c [2020-08-18 12:03:01,834 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:03:01,842 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:03:01,857 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:03:01,883 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:03:01,883 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:03:01,883 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:03:01,883 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:03:01,884 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:03:01,884 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:03:01,884 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:03:01,884 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:03:01,907 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-08-18 12:03:01,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 12:03:01,918 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:01,919 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:01,920 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:01,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:01,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1869542645, now seen corresponding path program 1 times [2020-08-18 12:03:01,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:01,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956422695] [2020-08-18 12:03:01,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:02,627 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:02,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:02,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:02,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:02,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:02,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:02,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:02,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:02,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:02,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:03:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:02,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:03:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:02,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956422695] [2020-08-18 12:03:02,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:02,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:03:02,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287358505] [2020-08-18 12:03:02,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:03:02,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:02,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:03:02,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:03:02,828 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 4 states. [2020-08-18 12:03:04,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:04,014 INFO L93 Difference]: Finished difference Result 299 states and 383 transitions. [2020-08-18 12:03:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:03:04,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 12:03:04,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:04,030 INFO L225 Difference]: With dead ends: 299 [2020-08-18 12:03:04,031 INFO L226 Difference]: Without dead ends: 164 [2020-08-18 12:03:04,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:03:04,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-18 12:03:04,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 136. [2020-08-18 12:03:04,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-18 12:03:04,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2020-08-18 12:03:04,126 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 59 [2020-08-18 12:03:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:04,127 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2020-08-18 12:03:04,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:03:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2020-08-18 12:03:04,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 12:03:04,131 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:04,131 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:04,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:03:04,131 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:04,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:04,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1007263159, now seen corresponding path program 1 times [2020-08-18 12:03:04,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:04,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909067430] [2020-08-18 12:03:04,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:04,483 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:04,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:04,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:04,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:04,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:04,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:04,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:04,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 12:03:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:04,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:04,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 12:03:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:04,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 12:03:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:04,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909067430] [2020-08-18 12:03:04,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:04,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:03:04,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514082822] [2020-08-18 12:03:04,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:03:04,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:04,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:03:04,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:03:04,547 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand 5 states. [2020-08-18 12:03:05,144 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:06,018 INFO L93 Difference]: Finished difference Result 244 states and 295 transitions. [2020-08-18 12:03:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:03:06,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 12:03:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:06,023 INFO L225 Difference]: With dead ends: 244 [2020-08-18 12:03:06,023 INFO L226 Difference]: Without dead ends: 154 [2020-08-18 12:03:06,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:03:06,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-18 12:03:06,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 127. [2020-08-18 12:03:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-18 12:03:06,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2020-08-18 12:03:06,066 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 60 [2020-08-18 12:03:06,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:06,066 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2020-08-18 12:03:06,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:03:06,066 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2020-08-18 12:03:06,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 12:03:06,069 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:06,069 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:06,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:03:06,070 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:06,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:06,070 INFO L82 PathProgramCache]: Analyzing trace with hash -706056489, now seen corresponding path program 1 times [2020-08-18 12:03:06,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:06,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634888298] [2020-08-18 12:03:06,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:06,428 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:06,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:06,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:06,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:06,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:06,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:06,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:06,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:06,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:03:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:06,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 12:03:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:06,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634888298] [2020-08-18 12:03:06,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:06,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:06,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396506984] [2020-08-18 12:03:06,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:06,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:06,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:06,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:06,567 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand 9 states. [2020-08-18 12:03:06,976 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:07,286 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:07,542 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:07,823 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:08,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:08,906 INFO L93 Difference]: Finished difference Result 253 states and 310 transitions. [2020-08-18 12:03:08,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 12:03:08,907 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 12:03:08,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:08,911 INFO L225 Difference]: With dead ends: 253 [2020-08-18 12:03:08,911 INFO L226 Difference]: Without dead ends: 154 [2020-08-18 12:03:08,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 12:03:08,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-18 12:03:08,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 127. [2020-08-18 12:03:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-18 12:03:08,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2020-08-18 12:03:08,949 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 64 [2020-08-18 12:03:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:08,949 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2020-08-18 12:03:08,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2020-08-18 12:03:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 12:03:08,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:08,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:08,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:03:08,953 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:08,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:08,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1588822882, now seen corresponding path program 1 times [2020-08-18 12:03:08,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:08,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296136226] [2020-08-18 12:03:08,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,263 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:09,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:03:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 12:03:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 12:03:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:09,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296136226] [2020-08-18 12:03:09,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:09,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 12:03:09,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671185913] [2020-08-18 12:03:09,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:03:09,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:09,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:03:09,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:03:09,364 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand 7 states. [2020-08-18 12:03:09,735 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:11,121 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:11,638 INFO L93 Difference]: Finished difference Result 352 states and 438 transitions. [2020-08-18 12:03:11,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 12:03:11,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-18 12:03:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:11,643 INFO L225 Difference]: With dead ends: 352 [2020-08-18 12:03:11,643 INFO L226 Difference]: Without dead ends: 253 [2020-08-18 12:03:11,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:03:11,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-18 12:03:11,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 210. [2020-08-18 12:03:11,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-18 12:03:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 241 transitions. [2020-08-18 12:03:11,689 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 241 transitions. Word has length 77 [2020-08-18 12:03:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:11,690 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 241 transitions. [2020-08-18 12:03:11,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:03:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 241 transitions. [2020-08-18 12:03:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 12:03:11,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:11,693 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:11,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:03:11,693 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:11,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:11,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1801013738, now seen corresponding path program 1 times [2020-08-18 12:03:11,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:11,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174089644] [2020-08-18 12:03:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,024 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:12,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:03:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 12:03:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 12:03:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 12:03:12,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174089644] [2020-08-18 12:03:12,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:12,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:12,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137730307] [2020-08-18 12:03:12,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:12,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:12,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:12,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:12,193 INFO L87 Difference]: Start difference. First operand 210 states and 241 transitions. Second operand 9 states. [2020-08-18 12:03:12,773 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:13,368 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:14,067 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:14,364 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:14,796 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:15,041 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:15,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:15,571 INFO L93 Difference]: Finished difference Result 434 states and 528 transitions. [2020-08-18 12:03:15,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 12:03:15,571 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-18 12:03:15,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:15,576 INFO L225 Difference]: With dead ends: 434 [2020-08-18 12:03:15,576 INFO L226 Difference]: Without dead ends: 252 [2020-08-18 12:03:15,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 12:03:15,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-08-18 12:03:15,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 209. [2020-08-18 12:03:15,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-18 12:03:15,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 238 transitions. [2020-08-18 12:03:15,619 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 238 transitions. Word has length 91 [2020-08-18 12:03:15,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:15,619 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 238 transitions. [2020-08-18 12:03:15,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:15,620 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 238 transitions. [2020-08-18 12:03:15,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 12:03:15,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:15,622 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:15,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:03:15,622 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:15,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:15,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1999801536, now seen corresponding path program 1 times [2020-08-18 12:03:15,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:15,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475050714] [2020-08-18 12:03:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,871 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:15,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:03:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 12:03:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 12:03:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:16,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475050714] [2020-08-18 12:03:16,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:16,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:16,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657154040] [2020-08-18 12:03:16,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:16,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:16,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:16,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:16,005 INFO L87 Difference]: Start difference. First operand 209 states and 238 transitions. Second operand 9 states. [2020-08-18 12:03:16,984 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:17,227 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:17,464 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:17,709 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:18,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:18,356 INFO L93 Difference]: Finished difference Result 432 states and 522 transitions. [2020-08-18 12:03:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 12:03:18,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-18 12:03:18,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:18,363 INFO L225 Difference]: With dead ends: 432 [2020-08-18 12:03:18,363 INFO L226 Difference]: Without dead ends: 251 [2020-08-18 12:03:18,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 12:03:18,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-18 12:03:18,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 214. [2020-08-18 12:03:18,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-18 12:03:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 243 transitions. [2020-08-18 12:03:18,417 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 243 transitions. Word has length 92 [2020-08-18 12:03:18,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:18,418 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 243 transitions. [2020-08-18 12:03:18,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 243 transitions. [2020-08-18 12:03:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 12:03:18,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:18,420 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:18,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:03:18,421 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:18,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:18,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1298201662, now seen corresponding path program 1 times [2020-08-18 12:03:18,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:18,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301425385] [2020-08-18 12:03:18,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,814 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:18,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:03:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 12:03:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 12:03:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:19,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301425385] [2020-08-18 12:03:19,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:19,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 12:03:19,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296784496] [2020-08-18 12:03:19,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 12:03:19,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:19,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 12:03:19,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:03:19,059 INFO L87 Difference]: Start difference. First operand 214 states and 243 transitions. Second operand 11 states. [2020-08-18 12:03:19,998 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:20,262 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:20,498 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:21,173 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:21,468 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:21,697 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:22,506 INFO L93 Difference]: Finished difference Result 444 states and 542 transitions. [2020-08-18 12:03:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 12:03:22,508 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-18 12:03:22,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:22,510 INFO L225 Difference]: With dead ends: 444 [2020-08-18 12:03:22,510 INFO L226 Difference]: Without dead ends: 258 [2020-08-18 12:03:22,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 12:03:22,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-18 12:03:22,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-18 12:03:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-18 12:03:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 247 transitions. [2020-08-18 12:03:22,551 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 247 transitions. Word has length 92 [2020-08-18 12:03:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:22,551 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 247 transitions. [2020-08-18 12:03:22,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 12:03:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 247 transitions. [2020-08-18 12:03:22,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 12:03:22,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:22,553 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:22,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:03:22,554 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:22,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:22,554 INFO L82 PathProgramCache]: Analyzing trace with hash 427279235, now seen corresponding path program 1 times [2020-08-18 12:03:22,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:22,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782218811] [2020-08-18 12:03:22,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:22,879 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:22,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:22,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:22,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:22,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:22,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:22,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:22,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:22,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:22,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:03:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:22,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 12:03:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 12:03:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:23,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782218811] [2020-08-18 12:03:23,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:23,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 12:03:23,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671274004] [2020-08-18 12:03:23,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:03:23,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:23,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:03:23,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:03:23,069 INFO L87 Difference]: Start difference. First operand 218 states and 247 transitions. Second operand 7 states. [2020-08-18 12:03:23,615 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:24,151 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:25,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:25,808 INFO L93 Difference]: Finished difference Result 613 states and 766 transitions. [2020-08-18 12:03:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 12:03:25,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-18 12:03:25,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:25,814 INFO L225 Difference]: With dead ends: 613 [2020-08-18 12:03:25,814 INFO L226 Difference]: Without dead ends: 423 [2020-08-18 12:03:25,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 12:03:25,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-08-18 12:03:25,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 385. [2020-08-18 12:03:25,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 12:03:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 451 transitions. [2020-08-18 12:03:25,918 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 451 transitions. Word has length 92 [2020-08-18 12:03:25,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:25,919 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 451 transitions. [2020-08-18 12:03:25,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:03:25,919 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 451 transitions. [2020-08-18 12:03:25,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 12:03:25,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:25,921 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:25,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:03:25,921 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:25,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:25,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1298280163, now seen corresponding path program 1 times [2020-08-18 12:03:25,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:25,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629393169] [2020-08-18 12:03:25,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,274 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:26,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:03:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 12:03:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 12:03:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 12:03:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:26,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629393169] [2020-08-18 12:03:26,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:26,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 12:03:26,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725731296] [2020-08-18 12:03:26,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:03:26,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:26,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:03:26,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:03:26,428 INFO L87 Difference]: Start difference. First operand 385 states and 451 transitions. Second operand 12 states. [2020-08-18 12:03:27,121 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:27,757 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:28,721 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:29,012 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:29,244 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:29,505 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:29,764 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:30,959 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:31,232 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:31,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:31,826 INFO L93 Difference]: Finished difference Result 1059 states and 1322 transitions. [2020-08-18 12:03:31,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 12:03:31,830 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-18 12:03:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:31,835 INFO L225 Difference]: With dead ends: 1059 [2020-08-18 12:03:31,836 INFO L226 Difference]: Without dead ends: 772 [2020-08-18 12:03:31,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 12:03:31,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-08-18 12:03:31,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 662. [2020-08-18 12:03:31,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-08-18 12:03:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 768 transitions. [2020-08-18 12:03:31,979 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 768 transitions. Word has length 96 [2020-08-18 12:03:31,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:31,982 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 768 transitions. [2020-08-18 12:03:31,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:03:31,982 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 768 transitions. [2020-08-18 12:03:31,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 12:03:31,986 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:31,987 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 12:03:31,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 12:03:31,987 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:31,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:31,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1033047505, now seen corresponding path program 1 times [2020-08-18 12:03:31,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:31,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781731132] [2020-08-18 12:03:31,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,287 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:32,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:03:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 12:03:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 12:03:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 12:03:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-18 12:03:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-18 12:03:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 12:03:32,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781731132] [2020-08-18 12:03:32,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:03:32,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 12:03:32,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450543619] [2020-08-18 12:03:32,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 12:03:32,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:32,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 12:03:32,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:03:32,566 INFO L87 Difference]: Start difference. First operand 662 states and 768 transitions. Second operand 16 states. [2020-08-18 12:03:33,300 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:03:33,670 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 12:03:33,942 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 12:03:34,189 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 12:03:34,788 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:35,073 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 12:03:35,455 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 12:03:36,128 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:36,480 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 12:03:37,323 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:37,851 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-18 12:03:38,161 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:38,736 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:39,187 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:39,577 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:03:40,215 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 12:03:40,697 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-18 12:03:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:41,370 INFO L93 Difference]: Finished difference Result 1437 states and 1723 transitions. [2020-08-18 12:03:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-18 12:03:41,371 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 155 [2020-08-18 12:03:41,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:41,376 INFO L225 Difference]: With dead ends: 1437 [2020-08-18 12:03:41,376 INFO L226 Difference]: Without dead ends: 869 [2020-08-18 12:03:41,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=600, Invalid=2370, Unknown=0, NotChecked=0, Total=2970 [2020-08-18 12:03:41,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2020-08-18 12:03:41,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 790. [2020-08-18 12:03:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2020-08-18 12:03:41,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 926 transitions. [2020-08-18 12:03:41,525 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 926 transitions. Word has length 155 [2020-08-18 12:03:41,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:41,526 INFO L479 AbstractCegarLoop]: Abstraction has 790 states and 926 transitions. [2020-08-18 12:03:41,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 12:03:41,526 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 926 transitions. [2020-08-18 12:03:41,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-08-18 12:03:41,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:41,532 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 12:03:41,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 12:03:41,533 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:41,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:41,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1843458969, now seen corresponding path program 1 times [2020-08-18 12:03:41,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:41,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471432127] [2020-08-18 12:03:41,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,816 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:41,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:03:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:41,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 12:03:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 12:03:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 12:03:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-18 12:03:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-18 12:03:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-18 12:03:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 12:03:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-08-18 12:03:42,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471432127] [2020-08-18 12:03:42,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:03:42,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 12:03:42,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566761649] [2020-08-18 12:03:42,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 12:03:42,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:42,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 12:03:42,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 12:03:42,368 INFO L87 Difference]: Start difference. First operand 790 states and 926 transitions. Second operand 15 states. [2020-08-18 12:03:43,841 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:44,108 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:44,340 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:44,570 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:45,866 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:46,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:46,604 INFO L93 Difference]: Finished difference Result 2070 states and 2533 transitions. [2020-08-18 12:03:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 12:03:46,612 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 269 [2020-08-18 12:03:46,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:46,620 INFO L225 Difference]: With dead ends: 2070 [2020-08-18 12:03:46,620 INFO L226 Difference]: Without dead ends: 1221 [2020-08-18 12:03:46,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 95 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 12:03:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-08-18 12:03:46,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1035. [2020-08-18 12:03:46,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-08-18 12:03:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1245 transitions. [2020-08-18 12:03:46,857 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1245 transitions. Word has length 269 [2020-08-18 12:03:46,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:46,858 INFO L479 AbstractCegarLoop]: Abstraction has 1035 states and 1245 transitions. [2020-08-18 12:03:46,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 12:03:46,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1245 transitions. [2020-08-18 12:03:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-08-18 12:03:46,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:46,870 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 12:03:46,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 12:03:46,871 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:46,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:46,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1744332382, now seen corresponding path program 1 times [2020-08-18 12:03:46,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:46,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492400175] [2020-08-18 12:03:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,194 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:47,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:03:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 12:03:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:03:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-18 12:03:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 12:03:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-18 12:03:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-18 12:03:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 12:03:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-18 12:03:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 85 proven. 36 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-08-18 12:03:47,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492400175] [2020-08-18 12:03:47,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:03:47,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 12:03:47,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334659053] [2020-08-18 12:03:47,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 12:03:47,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:47,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 12:03:47,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:03:47,679 INFO L87 Difference]: Start difference. First operand 1035 states and 1245 transitions. Second operand 16 states. [2020-08-18 12:03:48,499 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:48,829 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 12:03:49,077 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:49,324 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:49,936 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:50,681 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:51,020 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:51,272 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:51,932 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:52,711 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:52,964 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:53,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:53,543 INFO L93 Difference]: Finished difference Result 1960 states and 2393 transitions. [2020-08-18 12:03:53,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 12:03:53,544 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 275 [2020-08-18 12:03:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:53,552 INFO L225 Difference]: With dead ends: 1960 [2020-08-18 12:03:53,553 INFO L226 Difference]: Without dead ends: 1038 [2020-08-18 12:03:53,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 12:03:53,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-08-18 12:03:53,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 995. [2020-08-18 12:03:53,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-08-18 12:03:53,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1179 transitions. [2020-08-18 12:03:53,711 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1179 transitions. Word has length 275 [2020-08-18 12:03:53,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:53,711 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1179 transitions. [2020-08-18 12:03:53,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 12:03:53,712 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1179 transitions. [2020-08-18 12:03:53,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-08-18 12:03:53,718 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:53,718 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 12:03:53,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 12:03:53,718 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:53,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:53,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1275818878, now seen corresponding path program 1 times [2020-08-18 12:03:53,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:53,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186649745] [2020-08-18 12:03:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:53,983 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:53,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:03:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 12:03:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:03:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-18 12:03:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 12:03:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-18 12:03:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-18 12:03:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-18 12:03:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 12:03:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 68 proven. 11 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-08-18 12:03:54,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186649745] [2020-08-18 12:03:54,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:03:54,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 12:03:54,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077669459] [2020-08-18 12:03:54,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 12:03:54,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:54,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 12:03:54,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:03:54,435 INFO L87 Difference]: Start difference. First operand 995 states and 1179 transitions. Second operand 16 states. [2020-08-18 12:03:54,958 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:55,666 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190