/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:42:05,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:42:05,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:42:05,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:42:05,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:42:05,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:42:05,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:42:05,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:42:05,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:42:05,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:42:05,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:42:05,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:42:05,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:42:05,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:42:05,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:42:05,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:42:05,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:42:05,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:42:05,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:42:05,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:42:05,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:42:05,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:42:05,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:42:05,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:42:05,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:42:05,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:42:05,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:42:05,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:42:05,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:42:05,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:42:05,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:42:05,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:42:05,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:42:05,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:42:05,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:42:05,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:42:05,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:42:05,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:42:05,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:42:05,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:42:05,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:42:05,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 23:42:05,684 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:42:05,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:42:05,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:42:05,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:42:05,686 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:42:05,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:42:05,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:42:05,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:42:05,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:42:05,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:42:05,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:42:05,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:42:05,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:42:05,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:42:05,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:42:05,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:42:05,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:42:05,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:42:05,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:42:05,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:42:05,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:42:05,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:42:05,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:42:05,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:42:05,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:42:05,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:42:05,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:42:05,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:42:05,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:42:05,691 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:42:05,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:42:06,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:42:06,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:42:06,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:42:06,015 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:42:06,016 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c [2020-08-21 23:42:06,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a9615a7c/ed13e18625d342348e691fced3bb409f/FLAG5ba991cae [2020-08-21 23:42:06,663 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:42:06,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c [2020-08-21 23:42:06,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a9615a7c/ed13e18625d342348e691fced3bb409f/FLAG5ba991cae [2020-08-21 23:42:06,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a9615a7c/ed13e18625d342348e691fced3bb409f [2020-08-21 23:42:06,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:42:06,932 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:42:06,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:42:06,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:42:06,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:42:06,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:42:06" (1/1) ... [2020-08-21 23:42:06,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac45341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:06, skipping insertion in model container [2020-08-21 23:42:06,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:42:06" (1/1) ... [2020-08-21 23:42:06,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:42:07,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:42:07,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:42:07,311 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:42:07,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:42:07,565 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:42:07,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:07 WrapperNode [2020-08-21 23:42:07,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:42:07,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:42:07,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:42:07,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:42:07,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:07" (1/1) ... [2020-08-21 23:42:07,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:07" (1/1) ... [2020-08-21 23:42:07,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:07" (1/1) ... [2020-08-21 23:42:07,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:07" (1/1) ... [2020-08-21 23:42:07,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:07" (1/1) ... [2020-08-21 23:42:07,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:07" (1/1) ... [2020-08-21 23:42:07,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:07" (1/1) ... [2020-08-21 23:42:07,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:42:07,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:42:07,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:42:07,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:42:07,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:42:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:42:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:42:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 23:42:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 23:42:07,732 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 23:42:07,732 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 23:42:07,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 23:42:07,732 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 23:42:07,732 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 23:42:07,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 23:42:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 23:42:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 23:42:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 23:42:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 23:42:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 23:42:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 23:42:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 23:42:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:42:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 23:42:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 23:42:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 23:42:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 23:42:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 23:42:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 23:42:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 23:42:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 23:42:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 23:42:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 23:42:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 23:42:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 23:42:07,736 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 23:42:07,736 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 23:42:07,736 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 23:42:07,736 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 23:42:07,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 23:42:07,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 23:42:07,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 23:42:07,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 23:42:07,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 23:42:07,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 23:42:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:42:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:42:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 23:42:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 23:42:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 23:42:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 23:42:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 23:42:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 23:42:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 23:42:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 23:42:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:42:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 23:42:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 23:42:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 23:42:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 23:42:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 23:42:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 23:42:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 23:42:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 23:42:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 23:42:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 23:42:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 23:42:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 23:42:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 23:42:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 23:42:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 23:42:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:42:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 23:42:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 23:42:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 23:42:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 23:42:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 23:42:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 23:42:07,743 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 23:42:07,743 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 23:42:07,743 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 23:42:07,743 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:42:07,743 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:42:07,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 23:42:07,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:42:07,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:42:07,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:42:07,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:42:07,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 23:42:07,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:42:07,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 23:42:07,745 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 23:42:07,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:42:07,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 23:42:07,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 23:42:07,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 23:42:07,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:42:07,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 23:42:07,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:42:08,945 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:42:08,947 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 23:42:08,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:42:08 BoogieIcfgContainer [2020-08-21 23:42:08,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:42:08,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:42:08,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:42:08,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:42:08,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:42:06" (1/3) ... [2020-08-21 23:42:08,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd8c27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:42:08, skipping insertion in model container [2020-08-21 23:42:08,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:07" (2/3) ... [2020-08-21 23:42:08,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd8c27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:42:08, skipping insertion in model container [2020-08-21 23:42:08,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:42:08" (3/3) ... [2020-08-21 23:42:08,969 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product37.cil.c [2020-08-21 23:42:08,980 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:42:08,991 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:42:09,006 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:42:09,034 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:42:09,034 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:42:09,034 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:42:09,034 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:42:09,035 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:42:09,035 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:42:09,035 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:42:09,035 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:42:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-08-21 23:42:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 23:42:09,075 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:09,076 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] [2020-08-21 23:42:09,077 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:09,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:09,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1869542645, now seen corresponding path program 1 times [2020-08-21 23:42:09,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:09,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757942052] [2020-08-21 23:42:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:09,804 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:09,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:09,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:09,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:09,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:09,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:09,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:09,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:42:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:09,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:09,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:42:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:09,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:42:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:42:09,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757942052] [2020-08-21 23:42:09,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:09,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:42:09,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855092405] [2020-08-21 23:42:09,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:42:09,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:09,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:42:09,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:42:09,939 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 4 states. [2020-08-21 23:42:11,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:11,062 INFO L93 Difference]: Finished difference Result 299 states and 383 transitions. [2020-08-21 23:42:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 23:42:11,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 23:42:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:11,079 INFO L225 Difference]: With dead ends: 299 [2020-08-21 23:42:11,079 INFO L226 Difference]: Without dead ends: 164 [2020-08-21 23:42:11,084 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 [2020-08-21 23:42:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-21 23:42:11,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 136. [2020-08-21 23:42:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-21 23:42:11,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2020-08-21 23:42:11,184 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 59 [2020-08-21 23:42:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:11,185 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2020-08-21 23:42:11,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:42:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2020-08-21 23:42:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 23:42:11,190 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:11,190 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] [2020-08-21 23:42:11,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:42:11,190 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:11,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:11,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1007263159, now seen corresponding path program 1 times [2020-08-21 23:42:11,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:11,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223461293] [2020-08-21 23:42:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:11,650 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:11,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:11,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:11,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:11,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:11,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:11,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:11,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:42:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:11,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:11,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:42:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:11,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 23:42:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:42:11,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223461293] [2020-08-21 23:42:11,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:11,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:42:11,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553777287] [2020-08-21 23:42:11,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:42:11,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:11,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:42:11,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:42:11,717 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand 5 states. [2020-08-21 23:42:12,227 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:13,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:13,120 INFO L93 Difference]: Finished difference Result 244 states and 295 transitions. [2020-08-21 23:42:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:42:13,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 23:42:13,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:13,125 INFO L225 Difference]: With dead ends: 244 [2020-08-21 23:42:13,125 INFO L226 Difference]: Without dead ends: 154 [2020-08-21 23:42:13,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:42:13,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-21 23:42:13,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 127. [2020-08-21 23:42:13,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-21 23:42:13,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2020-08-21 23:42:13,166 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 60 [2020-08-21 23:42:13,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:13,167 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2020-08-21 23:42:13,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:42:13,167 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2020-08-21 23:42:13,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 23:42:13,170 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:13,170 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:42:13,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:42:13,170 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:13,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:13,171 INFO L82 PathProgramCache]: Analyzing trace with hash -706056489, now seen corresponding path program 1 times [2020-08-21 23:42:13,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:13,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011713224] [2020-08-21 23:42:13,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:13,526 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:13,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:13,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:13,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:13,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:13,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:13,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:42:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:13,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:13,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 23:42:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:13,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 23:42:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:42:13,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011713224] [2020-08-21 23:42:13,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:13,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:42:13,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633307149] [2020-08-21 23:42:13,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:42:13,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:13,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:42:13,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:42:13,675 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand 9 states. [2020-08-21 23:42:14,045 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:14,368 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:14,649 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:14,898 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:15,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:15,986 INFO L93 Difference]: Finished difference Result 253 states and 310 transitions. [2020-08-21 23:42:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:42:15,987 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 23:42:15,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:15,991 INFO L225 Difference]: With dead ends: 253 [2020-08-21 23:42:15,991 INFO L226 Difference]: Without dead ends: 154 [2020-08-21 23:42:15,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:42:15,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-21 23:42:16,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 127. [2020-08-21 23:42:16,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-21 23:42:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2020-08-21 23:42:16,033 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 64 [2020-08-21 23:42:16,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:16,034 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2020-08-21 23:42:16,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:42:16,034 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2020-08-21 23:42:16,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 23:42:16,037 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:16,037 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:42:16,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:42:16,037 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:16,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:16,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1588822882, now seen corresponding path program 1 times [2020-08-21 23:42:16,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:16,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101190623] [2020-08-21 23:42:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,318 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:16,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:42:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:42:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 23:42:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 23:42:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:42:16,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101190623] [2020-08-21 23:42:16,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:16,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 23:42:16,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150415595] [2020-08-21 23:42:16,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 23:42:16,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:16,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 23:42:16,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:42:16,423 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand 7 states. [2020-08-21 23:42:16,833 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:18,204 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:18,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:18,720 INFO L93 Difference]: Finished difference Result 352 states and 438 transitions. [2020-08-21 23:42:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 23:42:18,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-21 23:42:18,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:18,730 INFO L225 Difference]: With dead ends: 352 [2020-08-21 23:42:18,730 INFO L226 Difference]: Without dead ends: 253 [2020-08-21 23:42:18,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 23:42:18,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-21 23:42:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 210. [2020-08-21 23:42:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-21 23:42:18,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 241 transitions. [2020-08-21 23:42:18,780 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 241 transitions. Word has length 77 [2020-08-21 23:42:18,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:18,781 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 241 transitions. [2020-08-21 23:42:18,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 23:42:18,781 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 241 transitions. [2020-08-21 23:42:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 23:42:18,783 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:18,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:42:18,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:42:18,783 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:18,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:18,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1801013738, now seen corresponding path program 1 times [2020-08-21 23:42:18,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:18,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474737753] [2020-08-21 23:42:18,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,107 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:19,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:42:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:42:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 23:42:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 23:42:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 23:42:19,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474737753] [2020-08-21 23:42:19,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:19,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:42:19,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930147478] [2020-08-21 23:42:19,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:42:19,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:19,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:42:19,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:42:19,264 INFO L87 Difference]: Start difference. First operand 210 states and 241 transitions. Second operand 9 states. [2020-08-21 23:42:19,724 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:20,354 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:21,034 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:21,345 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:21,771 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:21,993 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:22,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:22,548 INFO L93 Difference]: Finished difference Result 434 states and 528 transitions. [2020-08-21 23:42:22,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 23:42:22,549 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-21 23:42:22,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:22,553 INFO L225 Difference]: With dead ends: 434 [2020-08-21 23:42:22,553 INFO L226 Difference]: Without dead ends: 252 [2020-08-21 23:42:22,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 23:42:22,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-08-21 23:42:22,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 209. [2020-08-21 23:42:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-21 23:42:22,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 238 transitions. [2020-08-21 23:42:22,597 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 238 transitions. Word has length 91 [2020-08-21 23:42:22,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:22,598 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 238 transitions. [2020-08-21 23:42:22,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:42:22,598 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 238 transitions. [2020-08-21 23:42:22,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 23:42:22,600 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:22,600 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:42:22,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:42:22,600 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:22,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:22,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1999801536, now seen corresponding path program 1 times [2020-08-21 23:42:22,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:22,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071471624] [2020-08-21 23:42:22,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,845 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:42:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:42:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 23:42:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 23:42:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:42:22,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071471624] [2020-08-21 23:42:22,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:22,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:42:22,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226234956] [2020-08-21 23:42:22,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:42:22,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:22,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:42:22,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:42:22,984 INFO L87 Difference]: Start difference. First operand 209 states and 238 transitions. Second operand 9 states. [2020-08-21 23:42:23,993 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:24,242 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:24,483 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:24,723 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:25,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:25,370 INFO L93 Difference]: Finished difference Result 432 states and 522 transitions. [2020-08-21 23:42:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 23:42:25,375 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-21 23:42:25,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:25,381 INFO L225 Difference]: With dead ends: 432 [2020-08-21 23:42:25,381 INFO L226 Difference]: Without dead ends: 251 [2020-08-21 23:42:25,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:42:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-21 23:42:25,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 214. [2020-08-21 23:42:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-21 23:42:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 243 transitions. [2020-08-21 23:42:25,427 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 243 transitions. Word has length 92 [2020-08-21 23:42:25,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:25,427 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 243 transitions. [2020-08-21 23:42:25,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:42:25,428 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 243 transitions. [2020-08-21 23:42:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 23:42:25,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:25,429 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:42:25,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:42:25,430 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:25,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1298201662, now seen corresponding path program 1 times [2020-08-21 23:42:25,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:25,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868866876] [2020-08-21 23:42:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,718 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:25,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:42:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:42:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 23:42:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 23:42:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:42:25,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868866876] [2020-08-21 23:42:25,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:25,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 23:42:25,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294449298] [2020-08-21 23:42:25,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 23:42:25,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:25,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 23:42:25,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 23:42:25,870 INFO L87 Difference]: Start difference. First operand 214 states and 243 transitions. Second operand 11 states. [2020-08-21 23:42:26,399 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:26,636 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:26,861 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:27,540 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:27,778 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:28,025 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:28,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:28,831 INFO L93 Difference]: Finished difference Result 444 states and 542 transitions. [2020-08-21 23:42:28,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 23:42:28,834 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-21 23:42:28,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:28,836 INFO L225 Difference]: With dead ends: 444 [2020-08-21 23:42:28,837 INFO L226 Difference]: Without dead ends: 258 [2020-08-21 23:42:28,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 23:42:28,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-21 23:42:28,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-21 23:42:28,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-21 23:42:28,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 247 transitions. [2020-08-21 23:42:28,876 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 247 transitions. Word has length 92 [2020-08-21 23:42:28,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:28,876 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 247 transitions. [2020-08-21 23:42:28,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 23:42:28,876 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 247 transitions. [2020-08-21 23:42:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 23:42:28,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:28,878 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:42:28,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:42:28,878 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:28,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:28,879 INFO L82 PathProgramCache]: Analyzing trace with hash 427279235, now seen corresponding path program 1 times [2020-08-21 23:42:28,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:28,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519801960] [2020-08-21 23:42:28,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,148 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:29,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:42:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:42:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 23:42:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 23:42:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:42:29,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519801960] [2020-08-21 23:42:29,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:29,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 23:42:29,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51028537] [2020-08-21 23:42:29,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 23:42:29,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:29,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 23:42:29,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:42:29,316 INFO L87 Difference]: Start difference. First operand 218 states and 247 transitions. Second operand 7 states. [2020-08-21 23:42:29,665 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:30,209 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:31,804 INFO L93 Difference]: Finished difference Result 613 states and 766 transitions. [2020-08-21 23:42:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 23:42:31,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-21 23:42:31,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:31,808 INFO L225 Difference]: With dead ends: 613 [2020-08-21 23:42:31,809 INFO L226 Difference]: Without dead ends: 423 [2020-08-21 23:42:31,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 23:42:31,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-08-21 23:42:31,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 385. [2020-08-21 23:42:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-21 23:42:31,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 451 transitions. [2020-08-21 23:42:31,871 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 451 transitions. Word has length 92 [2020-08-21 23:42:31,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:31,872 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 451 transitions. [2020-08-21 23:42:31,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 23:42:31,872 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 451 transitions. [2020-08-21 23:42:31,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 23:42:31,874 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:31,874 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:42:31,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 23:42:31,874 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:31,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:31,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1298280163, now seen corresponding path program 1 times [2020-08-21 23:42:31,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:31,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559306850] [2020-08-21 23:42:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,198 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:42:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:42:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 23:42:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 23:42:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 23:42:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:42:32,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559306850] [2020-08-21 23:42:32,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:32,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 23:42:32,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536009215] [2020-08-21 23:42:32,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:42:32,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:32,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:42:32,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:42:32,410 INFO L87 Difference]: Start difference. First operand 385 states and 451 transitions. Second operand 12 states. [2020-08-21 23:42:33,141 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:33,812 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:34,780 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:35,097 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:35,350 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:35,610 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:35,880 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:37,053 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:37,328 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:37,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:37,958 INFO L93 Difference]: Finished difference Result 1059 states and 1322 transitions. [2020-08-21 23:42:37,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 23:42:37,967 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-21 23:42:37,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:37,972 INFO L225 Difference]: With dead ends: 1059 [2020-08-21 23:42:37,973 INFO L226 Difference]: Without dead ends: 772 [2020-08-21 23:42:37,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 23:42:37,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-08-21 23:42:38,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 662. [2020-08-21 23:42:38,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-08-21 23:42:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 768 transitions. [2020-08-21 23:42:38,110 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 768 transitions. Word has length 96 [2020-08-21 23:42:38,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:38,110 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 768 transitions. [2020-08-21 23:42:38,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:42:38,111 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 768 transitions. [2020-08-21 23:42:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 23:42:38,113 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:38,114 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:42:38,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 23:42:38,114 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:38,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:38,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1033047505, now seen corresponding path program 1 times [2020-08-21 23:42:38,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:38,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631112281] [2020-08-21 23:42:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,417 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:38,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:42:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:42:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:42:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:42:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 23:42:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 23:42:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 23:42:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:42:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 23:42:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-21 23:42:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 23:42:38,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631112281] [2020-08-21 23:42:38,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:42:38,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 23:42:38,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129468072] [2020-08-21 23:42:38,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 23:42:38,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:38,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 23:42:38,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 23:42:38,808 INFO L87 Difference]: Start difference. First operand 662 states and 768 transitions. Second operand 16 states. [2020-08-21 23:42:39,604 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 23:42:39,940 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 23:42:40,207 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 23:42:40,473 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 23:42:41,120 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:41,392 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 23:42:41,764 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 23:42:42,400 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:42,735 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 23:42:43,635 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:44,169 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 23:42:44,481 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:45,070 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:45,516 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:45,900 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 23:42:46,548 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 23:42:47,028 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 23:42:47,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:47,658 INFO L93 Difference]: Finished difference Result 1437 states and 1723 transitions. [2020-08-21 23:42:47,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-21 23:42:47,659 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 155 [2020-08-21 23:42:47,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:47,665 INFO L225 Difference]: With dead ends: 1437 [2020-08-21 23:42:47,665 INFO L226 Difference]: Without dead ends: 869 [2020-08-21 23:42:47,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=600, Invalid=2370, Unknown=0, NotChecked=0, Total=2970 [2020-08-21 23:42:47,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2020-08-21 23:42:47,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 790. [2020-08-21 23:42:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2020-08-21 23:42:47,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 926 transitions. [2020-08-21 23:42:47,816 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 926 transitions. Word has length 155 [2020-08-21 23:42:47,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:47,817 INFO L479 AbstractCegarLoop]: Abstraction has 790 states and 926 transitions. [2020-08-21 23:42:47,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 23:42:47,817 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 926 transitions. [2020-08-21 23:42:47,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-08-21 23:42:47,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:47,823 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:42:47,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 23:42:47,824 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:47,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:47,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1843458969, now seen corresponding path program 1 times [2020-08-21 23:42:47,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:47,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735778323] [2020-08-21 23:42:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,096 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:48,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:42:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:42:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:42:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:42:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 23:42:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:42:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:42:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:42:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-21 23:42:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:42:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:42:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:42:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-21 23:42:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-21 23:42:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-21 23:42:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 23:42:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:48,542 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-08-21 23:42:48,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735778323] [2020-08-21 23:42:48,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:42:48,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 23:42:48,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007056690] [2020-08-21 23:42:48,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 23:42:48,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:48,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 23:42:48,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 23:42:48,545 INFO L87 Difference]: Start difference. First operand 790 states and 926 transitions. Second operand 15 states. [2020-08-21 23:42:50,457 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:50,725 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:50,961 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:51,193 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:52,504 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:53,222 INFO L93 Difference]: Finished difference Result 2070 states and 2533 transitions. [2020-08-21 23:42:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 23:42:53,227 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 269 [2020-08-21 23:42:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:53,235 INFO L225 Difference]: With dead ends: 2070 [2020-08-21 23:42:53,235 INFO L226 Difference]: Without dead ends: 1221 [2020-08-21 23:42:53,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 95 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 23:42:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-08-21 23:42:53,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1035. [2020-08-21 23:42:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-08-21 23:42:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1245 transitions. [2020-08-21 23:42:53,460 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1245 transitions. Word has length 269 [2020-08-21 23:42:53,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:53,461 INFO L479 AbstractCegarLoop]: Abstraction has 1035 states and 1245 transitions. [2020-08-21 23:42:53,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 23:42:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1245 transitions. [2020-08-21 23:42:53,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-08-21 23:42:53,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:53,468 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:42:53,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 23:42:53,468 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:53,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:53,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1744332382, now seen corresponding path program 1 times [2020-08-21 23:42:53,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:53,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025222519] [2020-08-21 23:42:53,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,790 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:53,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:42:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:42:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:42:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:42:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 23:42:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:42:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:42:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:42:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:53,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:42:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-21 23:42:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:42:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:42:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:42:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-21 23:42:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-21 23:42:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 23:42:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-21 23:42:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 85 proven. 36 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-08-21 23:42:54,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025222519] [2020-08-21 23:42:54,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:42:54,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 23:42:54,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249918297] [2020-08-21 23:42:54,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 23:42:54,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:54,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 23:42:54,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 23:42:54,183 INFO L87 Difference]: Start difference. First operand 1035 states and 1245 transitions. Second operand 16 states. [2020-08-21 23:42:55,276 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:55,638 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 23:42:55,912 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:56,176 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:56,798 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:57,548 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:57,897 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:58,166 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:58,815 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:59,578 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:59,818 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:00,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:43:00,437 INFO L93 Difference]: Finished difference Result 1960 states and 2393 transitions. [2020-08-21 23:43:00,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 23:43:00,438 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 275 [2020-08-21 23:43:00,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:43:00,448 INFO L225 Difference]: With dead ends: 1960 [2020-08-21 23:43:00,448 INFO L226 Difference]: Without dead ends: 1038 [2020-08-21 23:43:00,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 23:43:00,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-08-21 23:43:00,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 995. [2020-08-21 23:43:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-08-21 23:43:00,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1179 transitions. [2020-08-21 23:43:00,654 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1179 transitions. Word has length 275 [2020-08-21 23:43:00,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:43:00,657 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1179 transitions. [2020-08-21 23:43:00,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 23:43:00,658 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1179 transitions. [2020-08-21 23:43:00,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-08-21 23:43:00,664 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:43:00,665 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:43:00,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 23:43:00,665 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:43:00,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:43:00,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1275818878, now seen corresponding path program 1 times [2020-08-21 23:43:00,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:43:00,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746781318] [2020-08-21 23:43:00,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:43:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:00,958 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:43:00,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:00,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:43:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:00,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:00,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:00,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:43:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:00,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:43:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:43:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:43:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:43:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:43:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:43:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 23:43:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:43:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:43:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:43:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:43:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-21 23:43:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:43:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:43:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:43:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-21 23:43:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-21 23:43:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:43:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-21 23:43:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 23:43:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 68 proven. 11 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-08-21 23:43:01,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746781318] [2020-08-21 23:43:01,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:43:01,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 23:43:01,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180965275] [2020-08-21 23:43:01,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 23:43:01,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:43:01,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 23:43:01,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-21 23:43:01,355 INFO L87 Difference]: Start difference. First operand 995 states and 1179 transitions. Second operand 16 states. [2020-08-21 23:43:01,807 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:43:02,527 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:43:04,655 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:04,939 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191