/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:51:42,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:51:42,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:51:42,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:51:42,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:51:42,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:51:42,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:51:42,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:51:42,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:51:42,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:51:42,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:51:42,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:51:42,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:51:42,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:51:42,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:51:42,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:51:42,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:51:42,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:51:42,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:51:42,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:51:42,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:51:42,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:51:42,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:51:42,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:51:42,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:51:42,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:51:42,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:51:42,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:51:42,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:51:42,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:51:42,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:51:42,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:51:42,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:51:42,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:51:42,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:51:42,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:51:42,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:51:42,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:51:42,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:51:42,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:51:42,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:51:42,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:51:42,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:51:42,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:51:42,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:51:42,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:51:42,732 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:51:42,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:51:42,732 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:51:42,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:51:42,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:51:42,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:51:42,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:51:42,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:51:42,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:51:42,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:51:42,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:51:42,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:51:42,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:51:42,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:51:42,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:51:42,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:51:42,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:51:42,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:51:42,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:51:42,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:51:42,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:51:42,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:51:42,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:51:42,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:51:42,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:51:42,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 16:51:43,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:51:43,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:51:43,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:51:43,050 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:51:43,051 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:51:43,051 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-08-18 16:51:43,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8400b905/4cd8ea1ea54942c393f2eba1385c77ae/FLAG4325c328f [2020-08-18 16:51:43,661 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:51:43,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-08-18 16:51:43,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8400b905/4cd8ea1ea54942c393f2eba1385c77ae/FLAG4325c328f [2020-08-18 16:51:44,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8400b905/4cd8ea1ea54942c393f2eba1385c77ae [2020-08-18 16:51:44,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:51:44,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:51:44,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:51:44,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:51:44,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:51:44,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:51:44" (1/1) ... [2020-08-18 16:51:44,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68feb839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:51:44, skipping insertion in model container [2020-08-18 16:51:44,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:51:44" (1/1) ... [2020-08-18 16:51:44,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:51:44,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:51:44,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:51:44,509 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:51:44,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:51:44,737 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:51:44,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:51:44 WrapperNode [2020-08-18 16:51:44,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:51:44,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:51:44,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:51:44,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:51:44,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:51:44" (1/1) ... [2020-08-18 16:51:44,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:51:44" (1/1) ... [2020-08-18 16:51:44,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:51:44" (1/1) ... [2020-08-18 16:51:44,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:51:44" (1/1) ... [2020-08-18 16:51:44,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:51:44" (1/1) ... [2020-08-18 16:51:44,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:51:44" (1/1) ... [2020-08-18 16:51:44,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:51:44" (1/1) ... [2020-08-18 16:51:44,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:51:44,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:51:44,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:51:44,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:51:44,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:51:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:51:44,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:51:44,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:51:44,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:51:44,924 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:51:44,924 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:51:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:51:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 16:51:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:51:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 16:51:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:51:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:51:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:51:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:51:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:51:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:51:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 16:51:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 16:51:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:51:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:51:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:51:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:51:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:51:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:51:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:51:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:51:44,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:51:44,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:51:44,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:51:44,929 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:51:44,929 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:51:44,930 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:51:44,930 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:51:44,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:51:44,930 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:51:44,930 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:51:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:51:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:51:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:51:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:51:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:51:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 16:51:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 16:51:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:51:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:51:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:51:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:51:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:51:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:51:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:51:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:51:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 16:51:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:51:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:51:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:51:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:51:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:51:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 16:51:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 16:51:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:51:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:51:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:51:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:51:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 16:51:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 16:51:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:51:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 16:51:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:51:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:51:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:51:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:51:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:51:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:51:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:51:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:51:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:51:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:51:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:51:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:51:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:51:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:51:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:51:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:51:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:51:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:51:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:51:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:51:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:51:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:51:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:51:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:51:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:51:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:51:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:51:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:51:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:51:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:51:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:51:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:51:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:51:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:51:46,138 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:51:46,138 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:51:46,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:51:46 BoogieIcfgContainer [2020-08-18 16:51:46,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:51:46,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:51:46,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:51:46,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:51:46,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:51:44" (1/3) ... [2020-08-18 16:51:46,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6b2770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:51:46, skipping insertion in model container [2020-08-18 16:51:46,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:51:44" (2/3) ... [2020-08-18 16:51:46,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6b2770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:51:46, skipping insertion in model container [2020-08-18 16:51:46,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:51:46" (3/3) ... [2020-08-18 16:51:46,160 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product62.cil.c [2020-08-18 16:51:46,171 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:51:46,182 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:51:46,197 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:51:46,230 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:51:46,231 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:51:46,231 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:51:46,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:51:46,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:51:46,232 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:51:46,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:51:46,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:51:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-08-18 16:51:46,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 16:51:46,277 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:51:46,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:51:46,279 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:51:46,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:51:46,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1419538001, now seen corresponding path program 1 times [2020-08-18 16:51:46,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:51:46,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973347125] [2020-08-18 16:51:46,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:51:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:46,981 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:51:46,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:51:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:47,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:51:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:47,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:51:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:47,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:51:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:47,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:51:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:47,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:51:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:47,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:51:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:51:47,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973347125] [2020-08-18 16:51:47,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:51:47,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:51:47,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426158041] [2020-08-18 16:51:47,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:51:47,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:51:47,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:51:47,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:51:47,109 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 3 states. [2020-08-18 16:51:48,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:51:48,415 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2020-08-18 16:51:48,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:51:48,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 16:51:48,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:51:48,434 INFO L225 Difference]: With dead ends: 354 [2020-08-18 16:51:48,434 INFO L226 Difference]: Without dead ends: 191 [2020-08-18 16:51:48,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:51:48,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-18 16:51:48,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 154. [2020-08-18 16:51:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-18 16:51:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2020-08-18 16:51:48,553 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 46 [2020-08-18 16:51:48,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:51:48,554 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2020-08-18 16:51:48,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:51:48,554 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2020-08-18 16:51:48,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 16:51:48,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:51:48,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:51:48,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:51:48,559 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:51:48,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:51:48,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1353902391, now seen corresponding path program 1 times [2020-08-18 16:51:48,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:51:48,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896042997] [2020-08-18 16:51:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:51:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:49,004 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:51:49,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:51:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:49,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:51:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:49,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:51:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:49,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:51:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:49,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:51:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:49,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:51:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:49,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:51:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:51:49,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896042997] [2020-08-18 16:51:49,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:51:49,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:51:49,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104643770] [2020-08-18 16:51:49,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:51:49,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:51:49,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:51:49,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:51:49,118 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand 4 states. [2020-08-18 16:51:49,551 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:51:50,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:51:50,501 INFO L93 Difference]: Finished difference Result 283 states and 348 transitions. [2020-08-18 16:51:50,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:51:50,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 16:51:50,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:51:50,505 INFO L225 Difference]: With dead ends: 283 [2020-08-18 16:51:50,506 INFO L226 Difference]: Without dead ends: 175 [2020-08-18 16:51:50,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:51:50,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-18 16:51:50,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-08-18 16:51:50,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-18 16:51:50,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2020-08-18 16:51:50,549 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 47 [2020-08-18 16:51:50,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:51:50,549 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2020-08-18 16:51:50,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:51:50,550 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2020-08-18 16:51:50,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:51:50,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:51:50,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:51:50,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:51:50,552 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:51:50,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:51:50,553 INFO L82 PathProgramCache]: Analyzing trace with hash -480372053, now seen corresponding path program 1 times [2020-08-18 16:51:50,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:51:50,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090285250] [2020-08-18 16:51:50,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:51:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:50,858 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:51:50,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:51:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:50,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:51:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:50,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:51:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:50,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:51:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:50,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:51:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:50,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:51:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:50,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:51:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:51:50,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090285250] [2020-08-18 16:51:50,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:51:50,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:51:50,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86065110] [2020-08-18 16:51:50,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:51:50,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:51:50,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:51:50,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:51:50,928 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand 8 states. [2020-08-18 16:51:51,316 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:51:51,601 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:51:51,839 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:51:52,069 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:51:53,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:51:53,421 INFO L93 Difference]: Finished difference Result 296 states and 366 transitions. [2020-08-18 16:51:53,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:51:53,424 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 16:51:53,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:51:53,427 INFO L225 Difference]: With dead ends: 296 [2020-08-18 16:51:53,428 INFO L226 Difference]: Without dead ends: 175 [2020-08-18 16:51:53,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:51:53,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-18 16:51:53,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-08-18 16:51:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-18 16:51:53,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2020-08-18 16:51:53,476 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 52 [2020-08-18 16:51:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:51:53,476 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2020-08-18 16:51:53,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:51:53,477 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2020-08-18 16:51:53,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 16:51:53,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:51:53,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:51:53,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:51:53,480 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:51:53,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:51:53,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1922469070, now seen corresponding path program 1 times [2020-08-18 16:51:53,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:51:53,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911640506] [2020-08-18 16:51:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:51:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:53,801 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:51:53,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:51:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:53,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:51:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:53,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:51:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:53,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:51:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:53,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:51:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:53,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:51:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:53,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:51:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:53,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:51:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:53,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:51:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:53,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 16:51:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:53,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 16:51:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:51:53,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911640506] [2020-08-18 16:51:53,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:51:53,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:51:53,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226836506] [2020-08-18 16:51:53,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:51:53,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:51:53,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:51:53,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:51:53,897 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand 6 states. [2020-08-18 16:51:54,180 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:51:55,434 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:51:56,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:51:56,324 INFO L93 Difference]: Finished difference Result 404 states and 500 transitions. [2020-08-18 16:51:56,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:51:56,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-18 16:51:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:51:56,330 INFO L225 Difference]: With dead ends: 404 [2020-08-18 16:51:56,330 INFO L226 Difference]: Without dead ends: 283 [2020-08-18 16:51:56,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:51:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-18 16:51:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 240. [2020-08-18 16:51:56,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-18 16:51:56,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2020-08-18 16:51:56,403 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 70 [2020-08-18 16:51:56,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:51:56,404 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2020-08-18 16:51:56,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:51:56,404 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2020-08-18 16:51:56,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 16:51:56,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:51:56,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:51:56,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:51:56,407 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:51:56,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:51:56,408 INFO L82 PathProgramCache]: Analyzing trace with hash 371744810, now seen corresponding path program 1 times [2020-08-18 16:51:56,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:51:56,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831319067] [2020-08-18 16:51:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:51:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:56,722 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:51:56,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:51:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:56,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:51:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:56,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:51:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:56,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:51:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:56,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:51:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:56,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:51:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:56,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:51:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:56,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:51:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:56,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:51:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:56,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:51:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:56,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:51:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:56,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 16:51:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:56,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 16:51:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:51:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:51:56,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831319067] [2020-08-18 16:51:56,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:51:56,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:51:56,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554975129] [2020-08-18 16:51:56,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:51:56,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:51:56,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:51:56,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:51:56,857 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand 8 states. [2020-08-18 16:51:57,206 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:51:58,239 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:51:58,568 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:51:59,171 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:51:59,421 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:51:59,705 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:52:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:52:00,950 INFO L93 Difference]: Finished difference Result 718 states and 872 transitions. [2020-08-18 16:52:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:52:00,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-18 16:52:00,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:52:00,959 INFO L225 Difference]: With dead ends: 718 [2020-08-18 16:52:00,959 INFO L226 Difference]: Without dead ends: 502 [2020-08-18 16:52:00,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:52:00,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-18 16:52:01,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 435. [2020-08-18 16:52:01,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-18 16:52:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 494 transitions. [2020-08-18 16:52:01,076 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 494 transitions. Word has length 84 [2020-08-18 16:52:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:52:01,077 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 494 transitions. [2020-08-18 16:52:01,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:52:01,077 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 494 transitions. [2020-08-18 16:52:01,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 16:52:01,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:52:01,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:52:01,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:52:01,079 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:52:01,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:52:01,080 INFO L82 PathProgramCache]: Analyzing trace with hash 861472934, now seen corresponding path program 1 times [2020-08-18 16:52:01,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:52:01,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894740573] [2020-08-18 16:52:01,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:52:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,374 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:52:01,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:52:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:52:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:52:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:52:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:52:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:52:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:52:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:52:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:52:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:52:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:01,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:52:01,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894740573] [2020-08-18 16:52:01,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:52:01,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:52:01,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863449104] [2020-08-18 16:52:01,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:52:01,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:52:01,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:52:01,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:52:01,506 INFO L87 Difference]: Start difference. First operand 435 states and 494 transitions. Second operand 9 states. [2020-08-18 16:52:01,851 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:52:03,051 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:52:03,318 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:52:04,381 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:52:04,627 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:52:04,844 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:52:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:52:05,201 INFO L93 Difference]: Finished difference Result 544 states and 674 transitions. [2020-08-18 16:52:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:52:05,201 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-18 16:52:05,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:52:05,207 INFO L225 Difference]: With dead ends: 544 [2020-08-18 16:52:05,207 INFO L226 Difference]: Without dead ends: 541 [2020-08-18 16:52:05,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:52:05,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-08-18 16:52:05,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 435. [2020-08-18 16:52:05,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-18 16:52:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 493 transitions. [2020-08-18 16:52:05,314 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 493 transitions. Word has length 88 [2020-08-18 16:52:05,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:52:05,314 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 493 transitions. [2020-08-18 16:52:05,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:52:05,315 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 493 transitions. [2020-08-18 16:52:05,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 16:52:05,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:52:05,317 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:52:05,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:52:05,317 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:52:05,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:52:05,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1149093276, now seen corresponding path program 1 times [2020-08-18 16:52:05,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:52:05,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71609608] [2020-08-18 16:52:05,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:52:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,556 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:52:05,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:52:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:52:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:52:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:52:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:52:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:52:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:52:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:52:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:52:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:52:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 16:52:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:52:05,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71609608] [2020-08-18 16:52:05,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:52:05,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:52:05,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971000075] [2020-08-18 16:52:05,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:52:05,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:52:05,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:52:05,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:52:05,763 INFO L87 Difference]: Start difference. First operand 435 states and 493 transitions. Second operand 9 states. [2020-08-18 16:52:06,740 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:52:06,978 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:52:07,221 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:52:07,480 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:52:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:52:08,745 INFO L93 Difference]: Finished difference Result 960 states and 1180 transitions. [2020-08-18 16:52:08,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:52:08,748 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-08-18 16:52:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:52:08,752 INFO L225 Difference]: With dead ends: 960 [2020-08-18 16:52:08,752 INFO L226 Difference]: Without dead ends: 549 [2020-08-18 16:52:08,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:52:08,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-08-18 16:52:08,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 445. [2020-08-18 16:52:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-08-18 16:52:08,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 503 transitions. [2020-08-18 16:52:08,836 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 503 transitions. Word has length 104 [2020-08-18 16:52:08,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:52:08,837 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 503 transitions. [2020-08-18 16:52:08,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:52:08,837 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 503 transitions. [2020-08-18 16:52:08,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 16:52:08,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:52:08,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:52:08,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:52:08,840 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:52:08,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:52:08,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1502181658, now seen corresponding path program 1 times [2020-08-18 16:52:08,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:52:08,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758181334] [2020-08-18 16:52:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:52:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,119 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:52:09,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:52:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:52:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:52:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:52:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:52:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:52:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:52:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:52:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:52:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:52:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 16:52:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:09,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:52:09,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758181334] [2020-08-18 16:52:09,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:52:09,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:52:09,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425163161] [2020-08-18 16:52:09,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:52:09,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:52:09,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:52:09,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:52:09,293 INFO L87 Difference]: Start difference. First operand 445 states and 503 transitions. Second operand 11 states. [2020-08-18 16:52:09,809 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:52:10,035 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:52:10,255 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:52:10,902 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:52:11,140 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:52:11,383 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:52:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:52:12,750 INFO L93 Difference]: Finished difference Result 980 states and 1202 transitions. [2020-08-18 16:52:12,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:52:12,750 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-08-18 16:52:12,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:52:12,754 INFO L225 Difference]: With dead ends: 980 [2020-08-18 16:52:12,755 INFO L226 Difference]: Without dead ends: 559 [2020-08-18 16:52:12,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:52:12,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-08-18 16:52:12,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 453. [2020-08-18 16:52:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-18 16:52:12,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 511 transitions. [2020-08-18 16:52:12,851 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 511 transitions. Word has length 104 [2020-08-18 16:52:12,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:52:12,851 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 511 transitions. [2020-08-18 16:52:12,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:52:12,851 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 511 transitions. [2020-08-18 16:52:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 16:52:12,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:52:12,854 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:52:12,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:52:12,854 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:52:12,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:52:12,855 INFO L82 PathProgramCache]: Analyzing trace with hash -368991065, now seen corresponding path program 1 times [2020-08-18 16:52:12,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:52:12,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451439117] [2020-08-18 16:52:12,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:52:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,101 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:52:13,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:52:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:52:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:52:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:52:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:52:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:52:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:52:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:52:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:52:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:52:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 16:52:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:52:13,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451439117] [2020-08-18 16:52:13,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:52:13,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:52:13,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681811318] [2020-08-18 16:52:13,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:52:13,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:52:13,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:52:13,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:52:13,258 INFO L87 Difference]: Start difference. First operand 453 states and 511 transitions. Second operand 7 states. [2020-08-18 16:52:13,604 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:52:14,121 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:52:16,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:52:16,834 INFO L93 Difference]: Finished difference Result 1342 states and 1702 transitions. [2020-08-18 16:52:16,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:52:16,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-08-18 16:52:16,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:52:16,840 INFO L225 Difference]: With dead ends: 1342 [2020-08-18 16:52:16,841 INFO L226 Difference]: Without dead ends: 913 [2020-08-18 16:52:16,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:52:16,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-18 16:52:16,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 793. [2020-08-18 16:52:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-18 16:52:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 929 transitions. [2020-08-18 16:52:16,999 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 929 transitions. Word has length 104 [2020-08-18 16:52:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:52:17,000 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 929 transitions. [2020-08-18 16:52:17,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:52:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 929 transitions. [2020-08-18 16:52:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 16:52:17,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:52:17,005 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:52:17,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:52:17,006 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:52:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:52:17,006 INFO L82 PathProgramCache]: Analyzing trace with hash 38573473, now seen corresponding path program 1 times [2020-08-18 16:52:17,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:52:17,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984242761] [2020-08-18 16:52:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:52:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,286 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:52:17,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:52:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:52:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:52:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:52:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:52:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:52:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:52:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:52:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:52:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:52:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:52:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 16:52:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:52:17,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984242761] [2020-08-18 16:52:17,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:52:17,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 16:52:17,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621856068] [2020-08-18 16:52:17,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 16:52:17,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:52:17,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 16:52:17,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 16:52:17,647 INFO L87 Difference]: Start difference. First operand 793 states and 929 transitions. Second operand 17 states. [2020-08-18 16:52:18,528 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:52:18,829 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:52:19,070 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:52:19,296 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:52:19,945 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:52:21,076 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:52:21,388 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:52:21,657 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:52:21,910 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:52:22,249 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:52:22,522 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:52:23,012 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 16:52:23,535 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 16:52:26,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:52:26,180 INFO L93 Difference]: Finished difference Result 1649 states and 2014 transitions. [2020-08-18 16:52:26,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 16:52:26,180 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 108 [2020-08-18 16:52:26,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:52:26,187 INFO L225 Difference]: With dead ends: 1649 [2020-08-18 16:52:26,187 INFO L226 Difference]: Without dead ends: 880 [2020-08-18 16:52:26,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2020-08-18 16:52:26,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-18 16:52:26,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 763. [2020-08-18 16:52:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-18 16:52:26,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 880 transitions. [2020-08-18 16:52:26,359 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 880 transitions. Word has length 108 [2020-08-18 16:52:26,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:52:26,360 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 880 transitions. [2020-08-18 16:52:26,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 16:52:26,360 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 880 transitions. [2020-08-18 16:52:26,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-18 16:52:26,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:52:26,366 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:52:26,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:52:26,367 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:52:26,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:52:26,368 INFO L82 PathProgramCache]: Analyzing trace with hash 118260142, now seen corresponding path program 1 times [2020-08-18 16:52:26,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:52:26,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967070272] [2020-08-18 16:52:26,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:52:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,712 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:52:26,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:52:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:52:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:52:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:52:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:52:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:52:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:52:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:52:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:52:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:52:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 16:52:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 16:52:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 16:52:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:52:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:52:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:52:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:52:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:26,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-18 16:52:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:27,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 16:52:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:52:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-18 16:52:27,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967070272] [2020-08-18 16:52:27,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:52:27,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 16:52:27,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056360200] [2020-08-18 16:52:27,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 16:52:27,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:52:27,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 16:52:27,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:52:27,068 INFO L87 Difference]: Start difference. First operand 763 states and 880 transitions. Second operand 18 states. [2020-08-18 16:52:27,954 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:52:28,484 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:52:28,803 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:52:29,046 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:52:29,717 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:52:30,880 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:52:31,226 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:52:31,503 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:52:31,774 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:52:32,112 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:52:32,382 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:52:33,653 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:52:33,898 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:52:34,197 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:52:34,440 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:52:35,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:52:35,794 INFO L93 Difference]: Finished difference Result 1402 states and 1720 transitions. [2020-08-18 16:52:35,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-18 16:52:35,799 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2020-08-18 16:52:35,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:52:35,800 INFO L225 Difference]: With dead ends: 1402 [2020-08-18 16:52:35,800 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 16:52:35,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=387, Invalid=1775, Unknown=0, NotChecked=0, Total=2162 [2020-08-18 16:52:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 16:52:35,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 16:52:35,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 16:52:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 16:52:35,808 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2020-08-18 16:52:35,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:52:35,808 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 16:52:35,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 16:52:35,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 16:52:35,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 16:52:35,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:52:35,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 16:52:36,528 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-18 16:52:36,637 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-18 16:52:36,800 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2020-08-18 16:52:37,011 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2020-08-18 16:52:37,261 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-18 16:52:38,617 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-18 16:52:39,280 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-18 16:52:39,774 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 259