/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=0.2 --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_spec5_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:46:34,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:46:34,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:46:34,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:46:34,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:46:34,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:46:34,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:46:34,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:46:34,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:46:34,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:46:34,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:46:34,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:46:34,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:46:34,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:46:34,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:46:34,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:46:34,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:46:34,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:46:34,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:46:34,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:46:34,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:46:34,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:46:34,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:46:34,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:46:34,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:46:34,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:46:34,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:46:34,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:46:34,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:46:34,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:46:34,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:46:34,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:46:34,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:46:34,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:46:34,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:46:34,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:46:34,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:46:34,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:46:34,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:46:34,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:46:34,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:46:34,667 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 03:46:34,689 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:46:34,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:46:34,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:46:34,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:46:34,691 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:46:34,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:46:34,691 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:46:34,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:46:34,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:46:34,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:46:34,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:46:34,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:46:34,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:46:34,693 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:46:34,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:46:34,693 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:46:34,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:46:34,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:46:34,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:46:34,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:46:34,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:46:34,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:46:34,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:46:34,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:46:34,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:46:34,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:46:34,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:46:34,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:46:34,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:46:34,696 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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-08-22 03:46:34,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:46:34,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:46:34,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:46:34,996 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:46:34,998 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:46:34,998 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-08-22 03:46:35,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e022643cc/84e45d6500bb498093e3c56f53255b49/FLAG58a5edcee [2020-08-22 03:46:35,647 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:46:35,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-08-22 03:46:35,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e022643cc/84e45d6500bb498093e3c56f53255b49/FLAG58a5edcee [2020-08-22 03:46:35,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e022643cc/84e45d6500bb498093e3c56f53255b49 [2020-08-22 03:46:35,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:46:35,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:46:35,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:46:35,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:46:35,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:46:35,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:46:35" (1/1) ... [2020-08-22 03:46:35,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:46:35, skipping insertion in model container [2020-08-22 03:46:35,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:46:35" (1/1) ... [2020-08-22 03:46:35,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:46:36,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:46:36,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:46:36,412 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:46:36,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:46:36,580 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:46:36,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:46:36 WrapperNode [2020-08-22 03:46:36,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:46:36,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:46:36,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:46:36,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:46:36,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:46:36" (1/1) ... [2020-08-22 03:46:36,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:46:36" (1/1) ... [2020-08-22 03:46:36,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:46:36" (1/1) ... [2020-08-22 03:46:36,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:46:36" (1/1) ... [2020-08-22 03:46:36,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:46:36" (1/1) ... [2020-08-22 03:46:36,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:46:36" (1/1) ... [2020-08-22 03:46:36,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:46:36" (1/1) ... [2020-08-22 03:46:36,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:46:36,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:46:36,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:46:36,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:46:36,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:46:36" (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 03:46:36,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:46:36,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:46:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 03:46:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 03:46:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 03:46:36,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 03:46:36,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 03:46:36,740 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 03:46:36,741 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 03:46:36,742 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 03:46:36,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 03:46:36,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 03:46:36,742 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 03:46:36,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 03:46:36,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 03:46:36,743 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 03:46:36,743 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 03:46:36,744 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 03:46:36,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 03:46:36,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 03:46:36,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 03:46:36,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 03:46:36,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 03:46:36,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 03:46:36,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 03:46:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 03:46:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 03:46:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 03:46:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 03:46:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 03:46:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 03:46:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:46:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 03:46:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 03:46:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 03:46:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 03:46:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 03:46:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 03:46:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 03:46:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 03:46:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 03:46:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 03:46:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 03:46:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 03:46:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 03:46:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:46:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:46:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 03:46:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 03:46:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 03:46:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 03:46:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 03:46:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 03:46:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 03:46:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 03:46:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 03:46:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 03:46:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 03:46:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 03:46:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 03:46:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 03:46:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 03:46:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 03:46:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 03:46:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 03:46:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 03:46:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 03:46:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 03:46:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 03:46:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:46:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 03:46:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 03:46:36,757 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 03:46:36,757 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 03:46:36,758 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 03:46:36,758 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 03:46:36,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 03:46:36,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 03:46:36,759 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:46:36,759 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:46:36,759 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 03:46:36,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:46:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:46:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:46:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:46:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 03:46:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:46:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 03:46:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 03:46:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:46:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 03:46:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 03:46:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 03:46:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 03:46:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 03:46:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 03:46:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 03:46:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 03:46:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 03:46:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:46:36,763 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 03:46:36,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:46:36,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 03:46:36,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:46:37,784 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:46:37,784 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:46:37,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:46:37 BoogieIcfgContainer [2020-08-22 03:46:37,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:46:37,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:46:37,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:46:37,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:46:37,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:46:35" (1/3) ... [2020-08-22 03:46:37,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b35d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:46:37, skipping insertion in model container [2020-08-22 03:46:37,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:46:36" (2/3) ... [2020-08-22 03:46:37,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b35d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:46:37, skipping insertion in model container [2020-08-22 03:46:37,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:46:37" (3/3) ... [2020-08-22 03:46:37,798 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product60.cil.c [2020-08-22 03:46:37,809 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:46:37,817 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:46:37,831 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:46:37,856 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:46:37,857 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:46:37,857 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:46:37,857 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:46:37,857 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:46:37,858 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:46:37,858 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:46:37,858 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:46:37,881 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-08-22 03:46:37,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 03:46:37,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:46:37,893 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:46:37,894 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:46:37,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:46:37,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1771327782, now seen corresponding path program 1 times [2020-08-22 03:46:37,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:46:37,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606956574] [2020-08-22 03:46:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:46:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:38,669 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:46:38,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:46:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:38,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:46:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:38,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:46:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:38,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:46:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:38,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:46:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:38,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:46:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:38,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:46:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:38,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:46:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:38,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 03:46:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:38,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 03:46:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:38,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:46:38,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606956574] [2020-08-22 03:46:38,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:46:38,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:46:38,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069209217] [2020-08-22 03:46:38,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:46:38,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:46:38,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:46:38,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:46:38,803 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2020-08-22 03:46:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:46:39,916 INFO L93 Difference]: Finished difference Result 360 states and 456 transitions. [2020-08-22 03:46:39,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 03:46:39,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 03:46:39,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:46:39,937 INFO L225 Difference]: With dead ends: 360 [2020-08-22 03:46:39,937 INFO L226 Difference]: Without dead ends: 198 [2020-08-22 03:46:39,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:46:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-22 03:46:40,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2020-08-22 03:46:40,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-22 03:46:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2020-08-22 03:46:40,051 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 59 [2020-08-22 03:46:40,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:46:40,052 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2020-08-22 03:46:40,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:46:40,052 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2020-08-22 03:46:40,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 03:46:40,056 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:46:40,056 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:46:40,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:46:40,057 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:46:40,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:46:40,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1467126020, now seen corresponding path program 1 times [2020-08-22 03:46:40,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:46:40,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7616389] [2020-08-22 03:46:40,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:46:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:40,440 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:46:40,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:46:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:40,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:46:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:40,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:46:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:40,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:46:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:40,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:46:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:40,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:46:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:40,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:46:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:40,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:46:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:40,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 03:46:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:40,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 03:46:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:46:40,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7616389] [2020-08-22 03:46:40,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:46:40,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:46:40,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590653638] [2020-08-22 03:46:40,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:46:40,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:46:40,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:46:40,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:46:40,502 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand 5 states. [2020-08-22 03:46:40,899 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:46:41,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:46:41,953 INFO L93 Difference]: Finished difference Result 295 states and 356 transitions. [2020-08-22 03:46:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 03:46:41,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 03:46:41,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:46:41,962 INFO L225 Difference]: With dead ends: 295 [2020-08-22 03:46:41,962 INFO L226 Difference]: Without dead ends: 188 [2020-08-22 03:46:41,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 03:46:41,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-22 03:46:42,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 154. [2020-08-22 03:46:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-22 03:46:42,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2020-08-22 03:46:42,048 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 60 [2020-08-22 03:46:42,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:46:42,048 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2020-08-22 03:46:42,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:46:42,049 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2020-08-22 03:46:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 03:46:42,054 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:46:42,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:46:42,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:46:42,054 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:46:42,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:46:42,055 INFO L82 PathProgramCache]: Analyzing trace with hash 2049486337, now seen corresponding path program 1 times [2020-08-22 03:46:42,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:46:42,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221276385] [2020-08-22 03:46:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:46:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:42,380 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:46:42,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:46:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:42,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:46:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:42,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:46:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:42,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:46:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:42,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:46:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:42,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:46:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:42,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:46:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:42,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:46:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:42,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 03:46:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:42,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 03:46:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:46:42,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221276385] [2020-08-22 03:46:42,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:46:42,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:46:42,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012664547] [2020-08-22 03:46:42,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:46:42,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:46:42,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:46:42,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:46:42,501 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand 9 states. [2020-08-22 03:46:42,847 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:46:43,197 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:46:43,448 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:46:43,685 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:46:44,554 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:46:46,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:46:46,657 INFO L93 Difference]: Finished difference Result 515 states and 629 transitions. [2020-08-22 03:46:46,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 03:46:46,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-22 03:46:46,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:46:46,663 INFO L225 Difference]: With dead ends: 515 [2020-08-22 03:46:46,664 INFO L226 Difference]: Without dead ends: 389 [2020-08-22 03:46:46,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 03:46:46,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-22 03:46:46,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 324. [2020-08-22 03:46:46,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-08-22 03:46:46,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 388 transitions. [2020-08-22 03:46:46,741 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 388 transitions. Word has length 65 [2020-08-22 03:46:46,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:46:46,742 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 388 transitions. [2020-08-22 03:46:46,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:46:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 388 transitions. [2020-08-22 03:46:46,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 03:46:46,745 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:46:46,745 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:46:46,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:46:46,745 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:46:46,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:46:46,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1476281748, now seen corresponding path program 1 times [2020-08-22 03:46:46,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:46:46,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592718586] [2020-08-22 03:46:46,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:46:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:47,014 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:46:47,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:46:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:47,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:46:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:47,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:46:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:47,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:46:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:47,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:46:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:47,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:46:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:47,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:46:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:47,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:46:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:47,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:46:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 03:46:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:47,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:46:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 03:46:47,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592718586] [2020-08-22 03:46:47,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:46:47,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:46:47,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476124461] [2020-08-22 03:46:47,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:46:47,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:46:47,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:46:47,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:46:47,135 INFO L87 Difference]: Start difference. First operand 324 states and 388 transitions. Second operand 9 states. [2020-08-22 03:46:47,570 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:46:48,257 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:46:49,214 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:46:49,451 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:46:49,754 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:46:50,020 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:46:50,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:46:50,839 INFO L93 Difference]: Finished difference Result 819 states and 1054 transitions. [2020-08-22 03:46:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 03:46:50,841 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-22 03:46:50,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:46:50,847 INFO L225 Difference]: With dead ends: 819 [2020-08-22 03:46:50,847 INFO L226 Difference]: Without dead ends: 523 [2020-08-22 03:46:50,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 03:46:50,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-22 03:46:50,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 455. [2020-08-22 03:46:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-08-22 03:46:50,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 543 transitions. [2020-08-22 03:46:50,952 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 543 transitions. Word has length 70 [2020-08-22 03:46:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:46:50,952 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 543 transitions. [2020-08-22 03:46:50,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:46:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 543 transitions. [2020-08-22 03:46:50,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 03:46:50,956 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:46:50,957 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:46:50,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:46:50,957 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:46:50,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:46:50,958 INFO L82 PathProgramCache]: Analyzing trace with hash 340334758, now seen corresponding path program 1 times [2020-08-22 03:46:50,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:46:50,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511702214] [2020-08-22 03:46:50,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:46:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,237 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:46:51,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:46:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:46:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:46:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:46:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:46:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:46:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:46:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:46:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 03:46:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:46:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:46:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:46:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:46:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:46:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:46:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:46:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 03:46:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 03:46:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:46:51,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511702214] [2020-08-22 03:46:51,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:46:51,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:46:51,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503712429] [2020-08-22 03:46:51,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:46:51,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:46:51,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:46:51,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:46:51,418 INFO L87 Difference]: Start difference. First operand 455 states and 543 transitions. Second operand 9 states. [2020-08-22 03:46:52,579 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:46:52,843 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 03:46:53,112 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:46:53,359 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:46:54,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:46:54,337 INFO L93 Difference]: Finished difference Result 975 states and 1246 transitions. [2020-08-22 03:46:54,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:46:54,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-22 03:46:54,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:46:54,347 INFO L225 Difference]: With dead ends: 975 [2020-08-22 03:46:54,347 INFO L226 Difference]: Without dead ends: 548 [2020-08-22 03:46:54,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:46:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-08-22 03:46:54,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 468. [2020-08-22 03:46:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-22 03:46:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2020-08-22 03:46:54,437 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 108 [2020-08-22 03:46:54,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:46:54,437 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2020-08-22 03:46:54,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:46:54,437 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2020-08-22 03:46:54,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 03:46:54,440 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:46:54,440 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:46:54,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:46:54,440 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:46:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:46:54,441 INFO L82 PathProgramCache]: Analyzing trace with hash -2026359836, now seen corresponding path program 1 times [2020-08-22 03:46:54,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:46:54,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249306303] [2020-08-22 03:46:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:46:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,727 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:46:54,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:46:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:46:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:46:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:46:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:46:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:46:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:46:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:46:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 03:46:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:46:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:46:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:46:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:46:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:46:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:46:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:46:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 03:46:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 03:46:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:54,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:46:54,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249306303] [2020-08-22 03:46:54,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:46:54,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 03:46:54,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893380682] [2020-08-22 03:46:54,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 03:46:54,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:46:54,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 03:46:54,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:46:54,888 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 11 states. [2020-08-22 03:46:55,345 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:46:55,625 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:46:55,864 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:46:56,675 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:46:56,965 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:46:57,230 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:46:58,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:46:58,306 INFO L93 Difference]: Finished difference Result 998 states and 1270 transitions. [2020-08-22 03:46:58,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 03:46:58,307 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-22 03:46:58,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:46:58,312 INFO L225 Difference]: With dead ends: 998 [2020-08-22 03:46:58,312 INFO L226 Difference]: Without dead ends: 558 [2020-08-22 03:46:58,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:46:58,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-08-22 03:46:58,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 476. [2020-08-22 03:46:58,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-08-22 03:46:58,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 565 transitions. [2020-08-22 03:46:58,413 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 565 transitions. Word has length 108 [2020-08-22 03:46:58,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:46:58,416 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 565 transitions. [2020-08-22 03:46:58,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 03:46:58,416 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 565 transitions. [2020-08-22 03:46:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 03:46:58,421 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:46:58,421 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:46:58,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:46:58,424 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:46:58,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:46:58,425 INFO L82 PathProgramCache]: Analyzing trace with hash 2028067331, now seen corresponding path program 1 times [2020-08-22 03:46:58,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:46:58,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210306440] [2020-08-22 03:46:58,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:46:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,731 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:46:58,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:46:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:46:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:46:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:46:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:46:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:46:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:46:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:46:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 03:46:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:46:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:46:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:46:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:46:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:46:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:46:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:46:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 03:46:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 03:46:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:46:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:46:58,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210306440] [2020-08-22 03:46:58,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:46:58,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 03:46:58,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829740368] [2020-08-22 03:46:58,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 03:46:58,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:46:58,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 03:46:58,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 03:46:58,902 INFO L87 Difference]: Start difference. First operand 476 states and 565 transitions. Second operand 7 states. [2020-08-22 03:46:59,208 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:46:59,726 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:47:01,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:47:01,752 INFO L93 Difference]: Finished difference Result 1479 states and 1900 transitions. [2020-08-22 03:47:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 03:47:01,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-22 03:47:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:47:01,763 INFO L225 Difference]: With dead ends: 1479 [2020-08-22 03:47:01,764 INFO L226 Difference]: Without dead ends: 1031 [2020-08-22 03:47:01,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 03:47:01,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-08-22 03:47:01,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 953. [2020-08-22 03:47:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-22 03:47:01,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1151 transitions. [2020-08-22 03:47:01,956 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1151 transitions. Word has length 108 [2020-08-22 03:47:01,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:47:01,956 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1151 transitions. [2020-08-22 03:47:01,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 03:47:01,957 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1151 transitions. [2020-08-22 03:47:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-22 03:47:01,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:47:01,960 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:47:01,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:47:01,961 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:47:01,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:47:01,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1144962269, now seen corresponding path program 1 times [2020-08-22 03:47:01,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:47:01,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061963662] [2020-08-22 03:47:01,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:47:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,341 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:47:02,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:47:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:47:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:47:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:47:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:47:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:47:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 03:47:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 03:47:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:47:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:47:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 03:47:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 03:47:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:02,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:47:02,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061963662] [2020-08-22 03:47:02,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:47:02,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 03:47:02,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113663007] [2020-08-22 03:47:02,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:47:02,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:47:02,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:47:02,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:47:02,565 INFO L87 Difference]: Start difference. First operand 953 states and 1151 transitions. Second operand 12 states. [2020-08-22 03:47:03,141 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:47:03,838 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:47:04,586 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:47:04,899 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:47:05,138 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:47:05,415 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:47:05,699 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:47:07,741 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:47:08,052 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:47:08,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:47:08,624 INFO L93 Difference]: Finished difference Result 2713 states and 3488 transitions. [2020-08-22 03:47:08,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 03:47:08,625 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-22 03:47:08,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:47:08,637 INFO L225 Difference]: With dead ends: 2713 [2020-08-22 03:47:08,638 INFO L226 Difference]: Without dead ends: 1980 [2020-08-22 03:47:08,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 03:47:08,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-08-22 03:47:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1674. [2020-08-22 03:47:09,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2020-08-22 03:47:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2008 transitions. [2020-08-22 03:47:09,012 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2008 transitions. Word has length 112 [2020-08-22 03:47:09,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:47:09,015 INFO L479 AbstractCegarLoop]: Abstraction has 1674 states and 2008 transitions. [2020-08-22 03:47:09,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:47:09,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2008 transitions. [2020-08-22 03:47:09,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-22 03:47:09,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:47:09,020 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:47:09,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:47:09,020 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:47:09,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:47:09,021 INFO L82 PathProgramCache]: Analyzing trace with hash 164237146, now seen corresponding path program 1 times [2020-08-22 03:47:09,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:47:09,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330990438] [2020-08-22 03:47:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:47:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,321 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:47:09,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:47:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:47:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:47:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:47:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:47:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:47:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 03:47:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:47:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:47:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:47:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 03:47:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 03:47:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 03:47:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 03:47:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:47:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 03:47:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 03:47:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 03:47:09,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330990438] [2020-08-22 03:47:09,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:47:09,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 03:47:09,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170302260] [2020-08-22 03:47:09,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 03:47:09,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:47:09,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 03:47:09,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 03:47:09,651 INFO L87 Difference]: Start difference. First operand 1674 states and 2008 transitions. Second operand 16 states. [2020-08-22 03:47:10,152 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:47:10,474 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 03:47:10,725 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 03:47:10,966 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 03:47:11,652 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:47:11,942 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:47:12,295 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 03:47:12,585 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 03:47:13,948 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:47:14,576 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:47:14,885 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:47:15,203 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:47:15,750 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:47:16,121 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:47:16,483 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 03:47:17,254 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:47:17,557 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 03:47:18,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:47:18,362 INFO L93 Difference]: Finished difference Result 3619 states and 4470 transitions. [2020-08-22 03:47:18,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 03:47:18,362 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2020-08-22 03:47:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:47:18,375 INFO L225 Difference]: With dead ends: 3619 [2020-08-22 03:47:18,376 INFO L226 Difference]: Without dead ends: 2153 [2020-08-22 03:47:18,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-22 03:47:18,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2020-08-22 03:47:18,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1961. [2020-08-22 03:47:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-08-22 03:47:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2310 transitions. [2020-08-22 03:47:18,785 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2310 transitions. Word has length 174 [2020-08-22 03:47:18,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:47:18,785 INFO L479 AbstractCegarLoop]: Abstraction has 1961 states and 2310 transitions. [2020-08-22 03:47:18,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 03:47:18,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2310 transitions. [2020-08-22 03:47:18,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-22 03:47:18,795 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:47:18,795 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:47:18,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:47:18,796 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:47:18,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:47:18,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1190190750, now seen corresponding path program 1 times [2020-08-22 03:47:18,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:47:18,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532055948] [2020-08-22 03:47:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:47:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,265 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:47:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:47:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:47:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:47:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:47:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:47:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:47:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 03:47:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:47:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:47:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:47:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 03:47:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 03:47:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:47:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 03:47:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:47:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 03:47:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 03:47:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:47:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 03:47:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:47:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:47:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 03:47:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 03:47:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 03:47:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:47:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:47:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-22 03:47:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-22 03:47:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 82 proven. 31 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-08-22 03:47:19,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532055948] [2020-08-22 03:47:19,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:47:19,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 03:47:19,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636999907] [2020-08-22 03:47:19,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 03:47:19,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:47:19,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 03:47:19,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 03:47:19,829 INFO L87 Difference]: Start difference. First operand 1961 states and 2310 transitions. Second operand 15 states. [2020-08-22 03:47:21,141 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:47:21,412 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:47:21,637 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:47:21,905 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:47:22,150 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:47:23,175 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:47:23,716 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 03:47:24,196 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 03:47:24,701 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:47:27,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:47:27,726 INFO L93 Difference]: Finished difference Result 5471 states and 6670 transitions. [2020-08-22 03:47:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 03:47:27,727 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2020-08-22 03:47:27,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:47:27,745 INFO L225 Difference]: With dead ends: 5471 [2020-08-22 03:47:27,745 INFO L226 Difference]: Without dead ends: 3307 [2020-08-22 03:47:27,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 03:47:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2020-08-22 03:47:28,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2847. [2020-08-22 03:47:28,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2847 states. [2020-08-22 03:47:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 3387 transitions. [2020-08-22 03:47:28,329 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 3387 transitions. Word has length 311 [2020-08-22 03:47:28,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:47:28,330 INFO L479 AbstractCegarLoop]: Abstraction has 2847 states and 3387 transitions. [2020-08-22 03:47:28,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 03:47:28,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 3387 transitions. [2020-08-22 03:47:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-08-22 03:47:28,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:47:28,344 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 03:47:28,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 03:47:28,344 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:47:28,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:47:28,345 INFO L82 PathProgramCache]: Analyzing trace with hash -547150695, now seen corresponding path program 1 times [2020-08-22 03:47:28,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:47:28,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051760298] [2020-08-22 03:47:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:47:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,691 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:47:28,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:47:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:47:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:47:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:47:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:47:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:47:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 03:47:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 03:47:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:47:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:47:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 03:47:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 03:47:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:47:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 03:47:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:47:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 03:47:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:28,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:47:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-22 03:47:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:47:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 03:47:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:47:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:47:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 03:47:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 03:47:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:47:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 03:47:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:47:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:47:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:47:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:47:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-22 03:47:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-22 03:47:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:47:29,447 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 91 proven. 38 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-08-22 03:47:29,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051760298] [2020-08-22 03:47:29,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:47:29,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 03:47:29,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618009816] [2020-08-22 03:47:29,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 03:47:29,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:47:29,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 03:47:29,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-22 03:47:29,451 INFO L87 Difference]: Start difference. First operand 2847 states and 3387 transitions. Second operand 16 states. [2020-08-22 03:47:31,027 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:47:31,359 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:47:31,645 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:47:31,909 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:47:32,643 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191