/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:04:46,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:04:46,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:04:46,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:04:46,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:04:46,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:04:46,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:04:46,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:04:46,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:04:46,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:04:46,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:04:46,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:04:46,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:04:46,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:04:46,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:04:46,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:04:46,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:04:46,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:04:46,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:04:46,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:04:46,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:04:46,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:04:46,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:04:46,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:04:46,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:04:46,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:04:46,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:04:46,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:04:46,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:04:46,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:04:46,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:04:46,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:04:46,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:04:46,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:04:46,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:04:46,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:04:46,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:04:46,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:04:46,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:04:46,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:04:46,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:04:46,648 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 [2020-08-22 06:04:46,689 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:04:46,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:04:46,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:04:46,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:04:46,692 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:04:46,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:04:46,693 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:04:46,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:04:46,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:04:46,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:04:46,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:04:46,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:04:46,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:04:46,695 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:04:46,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:04:46,696 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:04:46,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:04:46,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:04:46,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:04:46,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:04:46,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:04:46,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:04:46,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:04:46,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:04:46,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:04:46,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:04:46,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:04:46,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:04:46,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:04:46,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:04:46,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:04:47,000 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:04:47,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:04:47,004 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:04:47,005 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:04:47,005 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c [2020-08-22 06:04:47,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e488e7dae/133f9a6d08a342b9b344f99bb3897883/FLAG848f9fdc7 [2020-08-22 06:04:47,593 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:04:47,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c [2020-08-22 06:04:47,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e488e7dae/133f9a6d08a342b9b344f99bb3897883/FLAG848f9fdc7 [2020-08-22 06:04:47,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e488e7dae/133f9a6d08a342b9b344f99bb3897883 [2020-08-22 06:04:47,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:04:47,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:04:47,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:04:47,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:04:47,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:04:47,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:04:47" (1/1) ... [2020-08-22 06:04:47,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b36a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:47, skipping insertion in model container [2020-08-22 06:04:47,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:04:47" (1/1) ... [2020-08-22 06:04:47,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:04:48,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:04:48,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:04:48,459 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:04:48,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:04:48,586 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:04:48,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48 WrapperNode [2020-08-22 06:04:48,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:04:48,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:04:48,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:04:48,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:04:48,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (1/1) ... [2020-08-22 06:04:48,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (1/1) ... [2020-08-22 06:04:48,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (1/1) ... [2020-08-22 06:04:48,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (1/1) ... [2020-08-22 06:04:48,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (1/1) ... [2020-08-22 06:04:48,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (1/1) ... [2020-08-22 06:04:48,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (1/1) ... [2020-08-22 06:04:48,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:04:48,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:04:48,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:04:48,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:04:48,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (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 [2020-08-22 06:04:48,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:04:48,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:04:48,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 06:04:48,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 06:04:48,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 06:04:48,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 06:04:48,734 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 06:04:48,734 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 06:04:48,734 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 06:04:48,734 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 06:04:48,735 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 06:04:48,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 06:04:48,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 06:04:48,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 06:04:48,735 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 06:04:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 06:04:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 06:04:48,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 06:04:48,737 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 06:04:48,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 06:04:48,737 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 06:04:48,737 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 06:04:48,737 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 06:04:48,738 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 06:04:48,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 06:04:48,739 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 06:04:48,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:04:48,739 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 06:04:48,740 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 06:04:48,740 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 06:04:48,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 06:04:48,740 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 06:04:48,740 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 06:04:48,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 06:04:48,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 06:04:48,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 06:04:48,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 06:04:48,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 06:04:48,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 06:04:48,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 06:04:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:04:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:04:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 06:04:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 06:04:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 06:04:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 06:04:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 06:04:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 06:04:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 06:04:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 06:04:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 06:04:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 06:04:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 06:04:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 06:04:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 06:04:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 06:04:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 06:04:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 06:04:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 06:04:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 06:04:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 06:04:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 06:04:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 06:04:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 06:04:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 06:04:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:04:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 06:04:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 06:04:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 06:04:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 06:04:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 06:04:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 06:04:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 06:04:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:04:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 06:04:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 06:04:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 06:04:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 06:04:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 06:04:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 06:04:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 06:04:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:04:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 06:04:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 06:04:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:04:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 06:04:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 06:04:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:04:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 06:04:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 06:04:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 06:04:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:04:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 06:04:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:04:51,847 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:04:51,847 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 06:04:51,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:04:51 BoogieIcfgContainer [2020-08-22 06:04:51,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:04:51,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:04:51,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:04:51,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:04:51,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:04:47" (1/3) ... [2020-08-22 06:04:51,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337bbcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:04:51, skipping insertion in model container [2020-08-22 06:04:51,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (2/3) ... [2020-08-22 06:04:51,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337bbcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:04:51, skipping insertion in model container [2020-08-22 06:04:51,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:04:51" (3/3) ... [2020-08-22 06:04:51,866 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product38.cil.c [2020-08-22 06:04:51,876 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:04:51,885 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:04:51,896 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:04:51,916 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:04:51,916 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:04:51,916 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:04:51,916 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:04:51,916 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:04:51,916 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:04:51,917 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:04:51,917 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:04:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-22 06:04:51,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 06:04:51,948 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:04:51,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:04:51,949 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:04:51,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:04:51,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1698741088, now seen corresponding path program 1 times [2020-08-22 06:04:51,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:04:51,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118545132] [2020-08-22 06:04:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:04:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:52,669 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:04:52,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:04:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:52,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:04:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:52,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:04:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:52,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:04:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:52,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:04:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:52,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 06:04:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:52,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 06:04:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:52,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 06:04:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:04:52,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118545132] [2020-08-22 06:04:52,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:04:52,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:04:52,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93764031] [2020-08-22 06:04:52,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:04:52,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:04:52,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:04:52,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:04:52,825 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 4 states. [2020-08-22 06:04:54,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:04:54,076 INFO L93 Difference]: Finished difference Result 296 states and 387 transitions. [2020-08-22 06:04:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 06:04:54,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 06:04:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:04:54,093 INFO L225 Difference]: With dead ends: 296 [2020-08-22 06:04:54,093 INFO L226 Difference]: Without dead ends: 165 [2020-08-22 06:04:54,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:04:54,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-22 06:04:54,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-22 06:04:54,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-22 06:04:54,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-08-22 06:04:54,225 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 51 [2020-08-22 06:04:54,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:04:54,225 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-08-22 06:04:54,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:04:54,226 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-08-22 06:04:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 06:04:54,236 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:04:54,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:04:54,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:04:54,237 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:04:54,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:04:54,238 INFO L82 PathProgramCache]: Analyzing trace with hash 160126664, now seen corresponding path program 1 times [2020-08-22 06:04:54,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:04:54,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358824666] [2020-08-22 06:04:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:04:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:54,655 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:04:54,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:04:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:54,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:04:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:54,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:04:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:54,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:04:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:54,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:04:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:54,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 06:04:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:54,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:04:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:54,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 06:04:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:04:54,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358824666] [2020-08-22 06:04:54,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:04:54,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:04:54,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192265431] [2020-08-22 06:04:54,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:04:54,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:04:54,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:04:54,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:04:54,719 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 5 states. [2020-08-22 06:04:55,224 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:04:56,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:04:56,134 INFO L93 Difference]: Finished difference Result 237 states and 294 transitions. [2020-08-22 06:04:56,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:04:56,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 06:04:56,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:04:56,139 INFO L225 Difference]: With dead ends: 237 [2020-08-22 06:04:56,139 INFO L226 Difference]: Without dead ends: 155 [2020-08-22 06:04:56,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:04:56,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-22 06:04:56,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-22 06:04:56,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 06:04:56,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-22 06:04:56,198 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 52 [2020-08-22 06:04:56,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:04:56,199 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-22 06:04:56,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:04:56,199 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-22 06:04:56,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 06:04:56,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:04:56,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:04:56,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:04:56,202 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:04:56,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:04:56,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1051645430, now seen corresponding path program 1 times [2020-08-22 06:04:56,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:04:56,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106604679] [2020-08-22 06:04:56,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:04:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:56,539 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:04:56,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:04:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:56,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:04:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:56,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:04:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:56,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:04:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:56,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:04:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:56,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 06:04:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:56,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 06:04:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:56,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:04:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:04:56,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106604679] [2020-08-22 06:04:56,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:04:56,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 06:04:56,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633307149] [2020-08-22 06:04:56,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 06:04:56,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:04:56,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 06:04:56,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:04:56,646 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 9 states. [2020-08-22 06:04:57,125 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:04:57,488 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:04:57,733 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:04:57,989 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:04:59,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:04:59,287 INFO L93 Difference]: Finished difference Result 250 states and 313 transitions. [2020-08-22 06:04:59,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 06:04:59,288 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-22 06:04:59,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:04:59,291 INFO L225 Difference]: With dead ends: 250 [2020-08-22 06:04:59,291 INFO L226 Difference]: Without dead ends: 155 [2020-08-22 06:04:59,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 06:04:59,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-22 06:04:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-22 06:04:59,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 06:04:59,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-22 06:04:59,340 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 57 [2020-08-22 06:04:59,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:04:59,341 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-22 06:04:59,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 06:04:59,341 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-22 06:04:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 06:04:59,342 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:04:59,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:04:59,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:04:59,343 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:04:59,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:04:59,344 INFO L82 PathProgramCache]: Analyzing trace with hash 23828646, now seen corresponding path program 1 times [2020-08-22 06:04:59,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:04:59,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861007377] [2020-08-22 06:04:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:04:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:59,624 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:04:59,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:04:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:59,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:04:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:59,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:04:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:59,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:04:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:59,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:04:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:59,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 06:04:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:59,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:04:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:59,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:04:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:59,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:04:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:59,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:04:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:59,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:04:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:04:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:04:59,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861007377] [2020-08-22 06:04:59,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:04:59,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 06:04:59,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652493418] [2020-08-22 06:04:59,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 06:04:59,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:04:59,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 06:04:59,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:04:59,753 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 7 states. [2020-08-22 06:05:00,181 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:05:01,408 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:05:02,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:05:02,157 INFO L93 Difference]: Finished difference Result 349 states and 441 transitions. [2020-08-22 06:05:02,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 06:05:02,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-22 06:05:02,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:05:02,162 INFO L225 Difference]: With dead ends: 349 [2020-08-22 06:05:02,162 INFO L226 Difference]: Without dead ends: 254 [2020-08-22 06:05:02,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-22 06:05:02,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-22 06:05:02,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 205. [2020-08-22 06:05:02,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-22 06:05:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2020-08-22 06:05:02,219 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 70 [2020-08-22 06:05:02,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:05:02,219 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2020-08-22 06:05:02,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 06:05:02,219 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2020-08-22 06:05:02,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 06:05:02,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:05:02,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:05:02,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:05:02,221 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:05:02,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:05:02,222 INFO L82 PathProgramCache]: Analyzing trace with hash 765865706, now seen corresponding path program 1 times [2020-08-22 06:05:02,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:05:02,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203419177] [2020-08-22 06:05:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:05:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:02,505 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:05:02,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:05:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:02,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:05:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:02,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:05:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:02,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:05:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:02,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:05:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:02,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 06:05:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:02,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:05:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:02,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:02,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:02,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:05:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:02,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:05:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:02,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:05:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:02,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 06:05:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:05:02,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203419177] [2020-08-22 06:05:02,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:05:02,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 06:05:02,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134581515] [2020-08-22 06:05:02,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 06:05:02,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:05:02,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 06:05:02,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:05:02,629 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand 9 states. [2020-08-22 06:05:03,132 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:05:04,391 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:04,662 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:04,930 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:05,169 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:05:06,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:05:06,351 INFO L93 Difference]: Finished difference Result 611 states and 771 transitions. [2020-08-22 06:05:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 06:05:06,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-22 06:05:06,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:05:06,362 INFO L225 Difference]: With dead ends: 611 [2020-08-22 06:05:06,362 INFO L226 Difference]: Without dead ends: 434 [2020-08-22 06:05:06,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 06:05:06,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-22 06:05:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 358. [2020-08-22 06:05:06,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-08-22 06:05:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 410 transitions. [2020-08-22 06:05:06,442 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 410 transitions. Word has length 84 [2020-08-22 06:05:06,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:05:06,443 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 410 transitions. [2020-08-22 06:05:06,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 06:05:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 410 transitions. [2020-08-22 06:05:06,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 06:05:06,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:05:06,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:05:06,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:05:06,445 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:05:06,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:05:06,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1305842374, now seen corresponding path program 1 times [2020-08-22 06:05:06,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:05:06,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5393414] [2020-08-22 06:05:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:05:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,751 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:05:06,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:05:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:05:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:05:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:05:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:05:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 06:05:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:05:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 06:05:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:05:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:05:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 06:05:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 06:05:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:05:06,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5393414] [2020-08-22 06:05:06,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:05:06,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 06:05:06,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697846282] [2020-08-22 06:05:06,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:05:06,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:05:06,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:05:06,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:05:06,894 INFO L87 Difference]: Start difference. First operand 358 states and 410 transitions. Second operand 10 states. [2020-08-22 06:05:07,503 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:05:08,750 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:08,987 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:05:09,232 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:09,508 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:10,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:05:10,641 INFO L93 Difference]: Finished difference Result 802 states and 995 transitions. [2020-08-22 06:05:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 06:05:10,641 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 06:05:10,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:05:10,647 INFO L225 Difference]: With dead ends: 802 [2020-08-22 06:05:10,647 INFO L226 Difference]: Without dead ends: 472 [2020-08-22 06:05:10,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-22 06:05:10,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-22 06:05:10,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 357. [2020-08-22 06:05:10,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-08-22 06:05:10,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 407 transitions. [2020-08-22 06:05:10,730 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 407 transitions. Word has length 88 [2020-08-22 06:05:10,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:05:10,731 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 407 transitions. [2020-08-22 06:05:10,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:05:10,731 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 407 transitions. [2020-08-22 06:05:10,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 06:05:10,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:05:10,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:05:10,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 06:05:10,734 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:05:10,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:05:10,734 INFO L82 PathProgramCache]: Analyzing trace with hash -638509814, now seen corresponding path program 1 times [2020-08-22 06:05:10,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:05:10,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669032461] [2020-08-22 06:05:10,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:05:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:10,965 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:05:10,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:05:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:10,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:05:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:10,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:05:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:10,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:05:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:10,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:05:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:10,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 06:05:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:11,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:05:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:11,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 06:05:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:11,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:11,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:11,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:05:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:11,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:05:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:11,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 06:05:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:11,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 06:05:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:05:11,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669032461] [2020-08-22 06:05:11,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:05:11,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 06:05:11,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680001579] [2020-08-22 06:05:11,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:05:11,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:05:11,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:05:11,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:05:11,130 INFO L87 Difference]: Start difference. First operand 357 states and 407 transitions. Second operand 10 states. [2020-08-22 06:05:12,418 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:12,657 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 06:05:12,900 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:05:13,137 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:05:14,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:05:14,033 INFO L93 Difference]: Finished difference Result 805 states and 1004 transitions. [2020-08-22 06:05:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 06:05:14,034 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 06:05:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:05:14,038 INFO L225 Difference]: With dead ends: 805 [2020-08-22 06:05:14,038 INFO L226 Difference]: Without dead ends: 476 [2020-08-22 06:05:14,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 06:05:14,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-22 06:05:14,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 367. [2020-08-22 06:05:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-22 06:05:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2020-08-22 06:05:14,116 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 89 [2020-08-22 06:05:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:05:14,116 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2020-08-22 06:05:14,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:05:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2020-08-22 06:05:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 06:05:14,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:05:14,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:05:14,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 06:05:14,118 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:05:14,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:05:14,119 INFO L82 PathProgramCache]: Analyzing trace with hash 63090060, now seen corresponding path program 1 times [2020-08-22 06:05:14,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:05:14,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000836800] [2020-08-22 06:05:14,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:05:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,389 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:05:14,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:05:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:05:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:05:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:05:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:05:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 06:05:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:05:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 06:05:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:05:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:05:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 06:05:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 06:05:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:05:14,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000836800] [2020-08-22 06:05:14,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:05:14,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 06:05:14,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762262329] [2020-08-22 06:05:14,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 06:05:14,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:05:14,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 06:05:14,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:05:14,547 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 12 states. [2020-08-22 06:05:15,664 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:15,942 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:05:16,182 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:05:16,877 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:05:17,126 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:05:17,364 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:05:18,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:05:18,398 INFO L93 Difference]: Finished difference Result 829 states and 1046 transitions. [2020-08-22 06:05:18,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 06:05:18,398 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-22 06:05:18,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:05:18,404 INFO L225 Difference]: With dead ends: 829 [2020-08-22 06:05:18,404 INFO L226 Difference]: Without dead ends: 490 [2020-08-22 06:05:18,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 06:05:18,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-08-22 06:05:18,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 375. [2020-08-22 06:05:18,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-08-22 06:05:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 425 transitions. [2020-08-22 06:05:18,489 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 425 transitions. Word has length 89 [2020-08-22 06:05:18,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:05:18,490 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 425 transitions. [2020-08-22 06:05:18,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 06:05:18,490 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 425 transitions. [2020-08-22 06:05:18,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 06:05:18,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:05:18,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:05:18,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 06:05:18,494 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:05:18,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:05:18,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1788570957, now seen corresponding path program 1 times [2020-08-22 06:05:18,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:05:18,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282399095] [2020-08-22 06:05:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:05:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,791 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:05:18,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:05:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:05:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:05:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:05:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:05:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 06:05:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:05:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 06:05:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:05:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:05:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 06:05:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 06:05:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:05:18,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282399095] [2020-08-22 06:05:18,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:05:18,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:05:18,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952317703] [2020-08-22 06:05:18,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:05:18,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:05:18,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:05:18,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:05:18,973 INFO L87 Difference]: Start difference. First operand 375 states and 425 transitions. Second operand 8 states. [2020-08-22 06:05:19,534 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:05:20,114 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:05:22,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:05:22,612 INFO L93 Difference]: Finished difference Result 1177 states and 1533 transitions. [2020-08-22 06:05:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 06:05:22,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-22 06:05:22,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:05:22,619 INFO L225 Difference]: With dead ends: 1177 [2020-08-22 06:05:22,619 INFO L226 Difference]: Without dead ends: 830 [2020-08-22 06:05:22,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-22 06:05:22,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-08-22 06:05:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 685. [2020-08-22 06:05:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-08-22 06:05:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 803 transitions. [2020-08-22 06:05:22,779 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 803 transitions. Word has length 89 [2020-08-22 06:05:22,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:05:22,781 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 803 transitions. [2020-08-22 06:05:22,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:05:22,781 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 803 transitions. [2020-08-22 06:05:22,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 06:05:22,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:05:22,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:05:22,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 06:05:22,788 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:05:22,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:05:22,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1370895219, now seen corresponding path program 1 times [2020-08-22 06:05:22,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:05:22,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553438280] [2020-08-22 06:05:22,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:05:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,080 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:05:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:05:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:05:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:05:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:05:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:05:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 06:05:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 06:05:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:05:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:05:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:05:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:05:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 06:05:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 06:05:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:05:23,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553438280] [2020-08-22 06:05:23,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:05:23,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:05:23,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698891871] [2020-08-22 06:05:23,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:05:23,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:05:23,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:05:23,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:05:23,171 INFO L87 Difference]: Start difference. First operand 685 states and 803 transitions. Second operand 8 states. [2020-08-22 06:05:23,803 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:05:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:05:26,335 INFO L93 Difference]: Finished difference Result 1357 states and 1763 transitions. [2020-08-22 06:05:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 06:05:26,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-22 06:05:26,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:05:26,345 INFO L225 Difference]: With dead ends: 1357 [2020-08-22 06:05:26,345 INFO L226 Difference]: Without dead ends: 1354 [2020-08-22 06:05:26,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-22 06:05:26,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-08-22 06:05:26,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1127. [2020-08-22 06:05:26,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-08-22 06:05:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1336 transitions. [2020-08-22 06:05:26,615 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1336 transitions. Word has length 93 [2020-08-22 06:05:26,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:05:26,616 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1336 transitions. [2020-08-22 06:05:26,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:05:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1336 transitions. [2020-08-22 06:05:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 06:05:26,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:05:26,620 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:05:26,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 06:05:26,621 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:05:26,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:05:26,621 INFO L82 PathProgramCache]: Analyzing trace with hash -669184687, now seen corresponding path program 1 times [2020-08-22 06:05:26,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:05:26,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992358540] [2020-08-22 06:05:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:05:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:26,922 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:05:26,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:05:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:26,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:05:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:26,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:05:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:26,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:05:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:26,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:05:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:26,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 06:05:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:26,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 06:05:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:26,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:05:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 06:05:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:05:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:05:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 06:05:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:05:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 06:05:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 06:05:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:05:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:05:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:05:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 06:05:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 06:05:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-22 06:05:27,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992358540] [2020-08-22 06:05:27,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:05:27,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 06:05:27,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987516179] [2020-08-22 06:05:27,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 06:05:27,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:05:27,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 06:05:27,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-22 06:05:27,217 INFO L87 Difference]: Start difference. First operand 1127 states and 1336 transitions. Second operand 19 states. [2020-08-22 06:05:27,847 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:05:28,201 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 06:05:28,454 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 06:05:28,694 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 06:05:29,399 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:05:30,580 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:30,931 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:32,366 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:32,634 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:32,923 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:33,176 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:33,421 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:33,664 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:33,952 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:34,212 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:35,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:05:35,190 INFO L93 Difference]: Finished difference Result 2141 states and 2612 transitions. [2020-08-22 06:05:35,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-22 06:05:35,191 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 152 [2020-08-22 06:05:35,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:05:35,199 INFO L225 Difference]: With dead ends: 2141 [2020-08-22 06:05:35,199 INFO L226 Difference]: Without dead ends: 1042 [2020-08-22 06:05:35,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 06:05:35,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-22 06:05:35,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 906. [2020-08-22 06:05:35,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-08-22 06:05:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1027 transitions. [2020-08-22 06:05:35,438 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1027 transitions. Word has length 152 [2020-08-22 06:05:35,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:05:35,441 INFO L479 AbstractCegarLoop]: Abstraction has 906 states and 1027 transitions. [2020-08-22 06:05:35,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 06:05:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1027 transitions. [2020-08-22 06:05:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 06:05:35,445 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:05:35,445 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 06:05:35,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 06:05:35,446 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:05:35,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:05:35,447 INFO L82 PathProgramCache]: Analyzing trace with hash 906656976, now seen corresponding path program 1 times [2020-08-22 06:05:35,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:05:35,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335937044] [2020-08-22 06:05:35,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:05:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,759 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:05:35,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:05:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:05:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:05:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:05:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:05:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 06:05:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 06:05:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:05:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 06:05:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:05:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:05:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 06:05:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:05:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 06:05:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 06:05:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:05:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:05:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:05:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 06:05:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 06:05:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:05:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-22 06:05:35,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335937044] [2020-08-22 06:05:35,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:05:35,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 06:05:35,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543260110] [2020-08-22 06:05:35,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 06:05:35,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:05:35,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 06:05:35,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-22 06:05:35,997 INFO L87 Difference]: Start difference. First operand 906 states and 1027 transitions. Second operand 13 states. [2020-08-22 06:05:36,659 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:05:36,913 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:05:37,164 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:05:38,209 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:05:39,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:05:39,605 INFO L93 Difference]: Finished difference Result 1616 states and 1930 transitions. [2020-08-22 06:05:39,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 06:05:39,605 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-22 06:05:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:05:39,607 INFO L225 Difference]: With dead ends: 1616 [2020-08-22 06:05:39,607 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 06:05:39,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 06:05:39,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 06:05:39,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 06:05:39,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 06:05:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 06:05:39,614 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2020-08-22 06:05:39,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:05:39,614 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 06:05:39,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 06:05:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 06:05:39,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 06:05:39,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 06:05:39,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 06:05:40,059 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 26 [2020-08-22 06:05:40,218 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 24 [2020-08-22 06:05:40,398 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25 [2020-08-22 06:05:40,591 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 26 [2020-08-22 06:05:40,768 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 25 [2020-08-22 06:05:40,962 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25 [2020-08-22 06:05:41,075 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 25 [2020-08-22 06:05:41,232 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 25 [2020-08-22 06:05:43,108 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 293 [2020-08-22 06:05:43,786 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 293 [2020-08-22 06:05:45,049 WARN L193 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 308 [2020-08-22 06:05:46,352 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 290