/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=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:31:36,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:31:36,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:31:36,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:31:36,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:31:36,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:31:36,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:31:36,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:31:36,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:31:36,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:31:36,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:31:36,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:31:36,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:31:36,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:31:36,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:31:36,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:31:36,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:31:36,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:31:36,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:31:36,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:31:36,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:31:36,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:31:36,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:31:36,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:31:36,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:31:36,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:31:36,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:31:36,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:31:36,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:31:36,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:31:36,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:31:36,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:31:36,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:31:36,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:31:36,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:31:36,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:31:36,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:31:36,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:31:36,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:31:36,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:31:36,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:31:36,945 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 22:31:36,983 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:31:36,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:31:36,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:31:36,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:31:36,985 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:31:36,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:31:36,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:31:36,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:31:36,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:31:36,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:31:36,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:31:36,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:31:36,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:31:36,988 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:31:36,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:31:36,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:31:36,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:31:36,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:31:36,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:31:36,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:31:36,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:31:36,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:31:36,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:31:36,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:31:36,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:31:36,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:31:36,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:31:36,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:31:36,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:31:36,991 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=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:31:37,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:31:37,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:31:37,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:31:37,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:31:37,321 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:31:37,321 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2020-08-18 22:31:37,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3978524da/b84b124208fd4199bae8cf3f2e2f1362/FLAG6670b396b [2020-08-18 22:31:37,945 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:31:37,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2020-08-18 22:31:37,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3978524da/b84b124208fd4199bae8cf3f2e2f1362/FLAG6670b396b [2020-08-18 22:31:38,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3978524da/b84b124208fd4199bae8cf3f2e2f1362 [2020-08-18 22:31:38,221 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:31:38,222 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:31:38,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:31:38,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:31:38,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:31:38,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:31:38" (1/1) ... [2020-08-18 22:31:38,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b75509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:38, skipping insertion in model container [2020-08-18 22:31:38,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:31:38" (1/1) ... [2020-08-18 22:31:38,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:31:38,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:31:38,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:31:38,696 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:31:38,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:31:38,821 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:31:38,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:38 WrapperNode [2020-08-18 22:31:38,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:31:38,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:31:38,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:31:38,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:31:38,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:38" (1/1) ... [2020-08-18 22:31:38,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:38" (1/1) ... [2020-08-18 22:31:38,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:38" (1/1) ... [2020-08-18 22:31:38,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:38" (1/1) ... [2020-08-18 22:31:38,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:38" (1/1) ... [2020-08-18 22:31:38,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:38" (1/1) ... [2020-08-18 22:31:38,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:38" (1/1) ... [2020-08-18 22:31:38,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:31:38,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:31:38,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:31:38,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:31:38,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:38" (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 22:31:39,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:31:39,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:31:39,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:31:39,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:31:39,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:31:39,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:31:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:31:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:31:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:31:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:31:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:31:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:31:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:31:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:31:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:31:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:31:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 22:31:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 22:31:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:31:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 22:31:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:31:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:31:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:31:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:31:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:31:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 22:31:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:31:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:31:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:31:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:31:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:31:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:31:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:31:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 22:31:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:31:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:31:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:31:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:31:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 22:31:39,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 22:31:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:31:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:31:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:31:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:31:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:31:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:31:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:31:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:31:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:31:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:31:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:31:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:31:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:31:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:31:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:31:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:31:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:31:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:31:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:31:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:31:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:31:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:31:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:31:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:31:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:31:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:31:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:31:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:31:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 22:31:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:31:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:31:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:31:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:31:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:31:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:31:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:31:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:31:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:31:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 22:31:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:31:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:31:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:31:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 22:31:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:31:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 22:31:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 22:31:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 22:31:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:31:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 22:31:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:31:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:31:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:31:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:31:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:31:40,169 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:31:40,170 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:31:40,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:31:40 BoogieIcfgContainer [2020-08-18 22:31:40,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:31:40,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:31:40,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:31:40,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:31:40,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:31:38" (1/3) ... [2020-08-18 22:31:40,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633e8d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:31:40, skipping insertion in model container [2020-08-18 22:31:40,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:38" (2/3) ... [2020-08-18 22:31:40,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633e8d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:31:40, skipping insertion in model container [2020-08-18 22:31:40,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:31:40" (3/3) ... [2020-08-18 22:31:40,184 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2020-08-18 22:31:40,194 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:31:40,203 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:31:40,218 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:31:40,241 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:31:40,241 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:31:40,241 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:31:40,241 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:31:40,242 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:31:40,242 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:31:40,242 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:31:40,242 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:31:40,262 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-18 22:31:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 22:31:40,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:40,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:31:40,273 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:40,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:40,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1016037874, now seen corresponding path program 1 times [2020-08-18 22:31:40,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:40,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151094667] [2020-08-18 22:31:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:41,010 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:41,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:41,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:41,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:41,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:41,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:41,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:41,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:31:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:41,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 22:31:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:41,141 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 22:31:41,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151094667] [2020-08-18 22:31:41,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:41,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:31:41,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38038023] [2020-08-18 22:31:41,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:31:41,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:41,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:31:41,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:31:41,178 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 4 states. [2020-08-18 22:31:42,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:31:42,406 INFO L93 Difference]: Finished difference Result 302 states and 395 transitions. [2020-08-18 22:31:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:31:42,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 22:31:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:31:42,424 INFO L225 Difference]: With dead ends: 302 [2020-08-18 22:31:42,424 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 22:31:42,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:31:42,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 22:31:42,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 135. [2020-08-18 22:31:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-18 22:31:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-08-18 22:31:42,549 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 51 [2020-08-18 22:31:42,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:31:42,550 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-08-18 22:31:42,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:31:42,550 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-08-18 22:31:42,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 22:31:42,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:42,561 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 22:31:42,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:31:42,562 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:42,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:42,563 INFO L82 PathProgramCache]: Analyzing trace with hash 2062541652, now seen corresponding path program 1 times [2020-08-18 22:31:42,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:42,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997614858] [2020-08-18 22:31:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:42,935 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:42,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:42,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:42,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:42,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:42,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:42,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:42,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:31:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:42,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:31:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:42,990 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 22:31:42,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997614858] [2020-08-18 22:31:42,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:42,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 22:31:42,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801349585] [2020-08-18 22:31:42,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:31:42,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:42,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:31:42,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:31:42,994 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 5 states. [2020-08-18 22:31:43,549 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:31:44,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:31:44,425 INFO L93 Difference]: Finished difference Result 247 states and 306 transitions. [2020-08-18 22:31:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 22:31:44,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 22:31:44,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:31:44,429 INFO L225 Difference]: With dead ends: 247 [2020-08-18 22:31:44,429 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 22:31:44,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:31:44,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 22:31:44,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-08-18 22:31:44,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-18 22:31:44,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2020-08-18 22:31:44,470 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 52 [2020-08-18 22:31:44,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:31:44,471 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2020-08-18 22:31:44,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:31:44,471 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2020-08-18 22:31:44,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 22:31:44,473 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:44,473 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] [2020-08-18 22:31:44,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:31:44,473 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:44,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:44,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1086390402, now seen corresponding path program 1 times [2020-08-18 22:31:44,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:44,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718275133] [2020-08-18 22:31:44,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:44,791 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:44,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:44,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:44,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:44,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:44,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:44,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:44,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 22:31:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:44,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:31:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:44,877 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 22:31:44,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718275133] [2020-08-18 22:31:44,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:44,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:31:44,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691718722] [2020-08-18 22:31:44,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:31:44,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:44,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:31:44,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:31:44,880 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand 9 states. [2020-08-18 22:31:45,378 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:31:45,692 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:45,941 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:46,189 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:47,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:31:47,543 INFO L93 Difference]: Finished difference Result 256 states and 321 transitions. [2020-08-18 22:31:47,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:31:47,543 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 22:31:47,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:31:47,547 INFO L225 Difference]: With dead ends: 256 [2020-08-18 22:31:47,547 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 22:31:47,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:31:47,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 22:31:47,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-08-18 22:31:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-18 22:31:47,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-18 22:31:47,583 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 56 [2020-08-18 22:31:47,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:31:47,584 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-18 22:31:47,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:31:47,584 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-18 22:31:47,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 22:31:47,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:47,586 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] [2020-08-18 22:31:47,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:31:47,586 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:47,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:47,587 INFO L82 PathProgramCache]: Analyzing trace with hash -848651131, now seen corresponding path program 1 times [2020-08-18 22:31:47,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:47,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95660556] [2020-08-18 22:31:47,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,862 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:47,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:31:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:31:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:31:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 22:31:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 22:31:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:48,000 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 22:31:48,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95660556] [2020-08-18 22:31:48,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:48,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 22:31:48,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3553730] [2020-08-18 22:31:48,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:31:48,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:48,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:31:48,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:31:48,003 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 7 states. [2020-08-18 22:31:48,353 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:31:49,511 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:31:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:31:50,164 INFO L93 Difference]: Finished difference Result 355 states and 448 transitions. [2020-08-18 22:31:50,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 22:31:50,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-08-18 22:31:50,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:31:50,169 INFO L225 Difference]: With dead ends: 355 [2020-08-18 22:31:50,169 INFO L226 Difference]: Without dead ends: 257 [2020-08-18 22:31:50,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 22:31:50,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-08-18 22:31:50,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 211. [2020-08-18 22:31:50,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-18 22:31:50,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 243 transitions. [2020-08-18 22:31:50,227 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 243 transitions. Word has length 69 [2020-08-18 22:31:50,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:31:50,227 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 243 transitions. [2020-08-18 22:31:50,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:31:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 243 transitions. [2020-08-18 22:31:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 22:31:50,229 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:50,229 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] [2020-08-18 22:31:50,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:31:50,229 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:50,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:50,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1442987939, now seen corresponding path program 1 times [2020-08-18 22:31:50,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:50,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207055746] [2020-08-18 22:31:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:50,528 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:50,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:50,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:50,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:50,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:50,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:50,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:50,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:31:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:50,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:31:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:50,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:31:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:50,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:31:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:50,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:31:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:50,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 22:31:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:50,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 22:31:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:50,629 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 22:31:50,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207055746] [2020-08-18 22:31:50,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:50,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:31:50,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435013892] [2020-08-18 22:31:50,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:31:50,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:50,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:31:50,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:31:50,631 INFO L87 Difference]: Start difference. First operand 211 states and 243 transitions. Second operand 9 states. [2020-08-18 22:31:51,055 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:31:52,083 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:52,405 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:31:53,034 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:53,280 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:54,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:31:54,343 INFO L93 Difference]: Finished difference Result 624 states and 785 transitions. [2020-08-18 22:31:54,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 22:31:54,344 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 22:31:54,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:31:54,349 INFO L225 Difference]: With dead ends: 624 [2020-08-18 22:31:54,349 INFO L226 Difference]: Without dead ends: 441 [2020-08-18 22:31:54,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 22:31:54,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-18 22:31:54,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 370. [2020-08-18 22:31:54,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-08-18 22:31:54,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 426 transitions. [2020-08-18 22:31:54,435 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 426 transitions. Word has length 83 [2020-08-18 22:31:54,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:31:54,435 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 426 transitions. [2020-08-18 22:31:54,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:31:54,436 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 426 transitions. [2020-08-18 22:31:54,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 22:31:54,437 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:54,437 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] [2020-08-18 22:31:54,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:31:54,438 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:54,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:54,438 INFO L82 PathProgramCache]: Analyzing trace with hash -142547263, now seen corresponding path program 1 times [2020-08-18 22:31:54,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:54,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502874307] [2020-08-18 22:31:54,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,769 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:54,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 22:31:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:31:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:31:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:31:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:31:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:31:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 22:31:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 22:31:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:54,941 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 22:31:54,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502874307] [2020-08-18 22:31:54,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:54,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:31:54,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296007805] [2020-08-18 22:31:54,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:31:54,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:54,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:31:54,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:31:54,945 INFO L87 Difference]: Start difference. First operand 370 states and 426 transitions. Second operand 10 states. [2020-08-18 22:31:55,390 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:31:56,593 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:31:57,674 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:57,950 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:58,220 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:58,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:31:58,628 INFO L93 Difference]: Finished difference Result 818 states and 1011 transitions. [2020-08-18 22:31:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 22:31:58,629 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-08-18 22:31:58,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:31:58,634 INFO L225 Difference]: With dead ends: 818 [2020-08-18 22:31:58,634 INFO L226 Difference]: Without dead ends: 476 [2020-08-18 22:31:58,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 22:31:58,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-18 22:31:58,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 369. [2020-08-18 22:31:58,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-08-18 22:31:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 423 transitions. [2020-08-18 22:31:58,721 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 423 transitions. Word has length 87 [2020-08-18 22:31:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:31:58,721 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 423 transitions. [2020-08-18 22:31:58,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:31:58,722 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 423 transitions. [2020-08-18 22:31:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 22:31:58,723 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:58,724 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] [2020-08-18 22:31:58,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:31:58,724 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:58,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:58,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1138633269, now seen corresponding path program 1 times [2020-08-18 22:31:58,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:58,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848530740] [2020-08-18 22:31:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:58,981 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:58,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:58,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 22:31:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:31:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:31:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:31:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:31:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:31:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:31:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:31:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 22:31:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 22:31:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:59,126 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 22:31:59,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848530740] [2020-08-18 22:31:59,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:59,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:31:59,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362745687] [2020-08-18 22:31:59,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:31:59,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:59,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:31:59,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:31:59,129 INFO L87 Difference]: Start difference. First operand 369 states and 423 transitions. Second operand 10 states. [2020-08-18 22:32:00,058 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:00,314 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 22:32:00,552 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:32:00,793 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:32:01,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:32:01,973 INFO L93 Difference]: Finished difference Result 825 states and 1040 transitions. [2020-08-18 22:32:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 22:32:01,974 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-18 22:32:01,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:32:01,978 INFO L225 Difference]: With dead ends: 825 [2020-08-18 22:32:01,978 INFO L226 Difference]: Without dead ends: 484 [2020-08-18 22:32:01,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:32:01,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-08-18 22:32:02,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 379. [2020-08-18 22:32:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 22:32:02,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 433 transitions. [2020-08-18 22:32:02,066 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 433 transitions. Word has length 103 [2020-08-18 22:32:02,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:32:02,067 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 433 transitions. [2020-08-18 22:32:02,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:32:02,067 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 433 transitions. [2020-08-18 22:32:02,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 22:32:02,069 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:32:02,069 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:02,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:32:02,069 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:32:02,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:32:02,070 INFO L82 PathProgramCache]: Analyzing trace with hash 789639433, now seen corresponding path program 1 times [2020-08-18 22:32:02,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:32:02,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844842729] [2020-08-18 22:32:02,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:32:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,349 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:32:02,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:32:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:32:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:32:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:32:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:32:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:32:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 22:32:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:32:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:32:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:32:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 22:32:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 22:32:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,513 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 22:32:02,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844842729] [2020-08-18 22:32:02,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:32:02,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 22:32:02,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827818258] [2020-08-18 22:32:02,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:32:02,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:32:02,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:32:02,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:32:02,518 INFO L87 Difference]: Start difference. First operand 379 states and 433 transitions. Second operand 12 states. [2020-08-18 22:32:03,009 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:32:03,276 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:32:03,507 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:32:04,173 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:32:04,430 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:32:04,677 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:32:05,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:32:05,867 INFO L93 Difference]: Finished difference Result 845 states and 1062 transitions. [2020-08-18 22:32:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 22:32:05,868 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-08-18 22:32:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:32:05,872 INFO L225 Difference]: With dead ends: 845 [2020-08-18 22:32:05,872 INFO L226 Difference]: Without dead ends: 494 [2020-08-18 22:32:05,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 22:32:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-08-18 22:32:05,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 387. [2020-08-18 22:32:05,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-18 22:32:05,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 441 transitions. [2020-08-18 22:32:05,954 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 441 transitions. Word has length 103 [2020-08-18 22:32:05,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:32:05,956 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 441 transitions. [2020-08-18 22:32:05,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:32:05,956 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 441 transitions. [2020-08-18 22:32:05,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 22:32:05,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:32:05,961 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] [2020-08-18 22:32:05,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:32:05,962 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:32:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:32:05,962 INFO L82 PathProgramCache]: Analyzing trace with hash 549099304, now seen corresponding path program 1 times [2020-08-18 22:32:05,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:32:05,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521611782] [2020-08-18 22:32:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:32:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,303 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:32:06,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:32:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:32:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:32:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:32:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:32:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:32:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 22:32:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:32:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:32:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:32:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 22:32:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 22:32:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,505 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 22:32:06,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521611782] [2020-08-18 22:32:06,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:32:06,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:32:06,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35195567] [2020-08-18 22:32:06,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:32:06,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:32:06,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:32:06,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:32:06,509 INFO L87 Difference]: Start difference. First operand 387 states and 441 transitions. Second operand 8 states. [2020-08-18 22:32:07,073 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:32:07,626 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:32:09,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:32:09,814 INFO L93 Difference]: Finished difference Result 1164 states and 1513 transitions. [2020-08-18 22:32:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 22:32:09,815 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-08-18 22:32:09,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:32:09,822 INFO L225 Difference]: With dead ends: 1164 [2020-08-18 22:32:09,823 INFO L226 Difference]: Without dead ends: 805 [2020-08-18 22:32:09,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-18 22:32:09,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-08-18 22:32:09,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 673. [2020-08-18 22:32:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-08-18 22:32:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 795 transitions. [2020-08-18 22:32:09,965 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 795 transitions. Word has length 103 [2020-08-18 22:32:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:32:09,967 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 795 transitions. [2020-08-18 22:32:09,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:32:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 795 transitions. [2020-08-18 22:32:09,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 22:32:09,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:32:09,970 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] [2020-08-18 22:32:09,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:32:09,970 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:32:09,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:32:09,971 INFO L82 PathProgramCache]: Analyzing trace with hash 290063790, now seen corresponding path program 1 times [2020-08-18 22:32:09,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:32:09,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626949139] [2020-08-18 22:32:09,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:32:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,267 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:32:10,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:32:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:32:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:32:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:32:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:32:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:32:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:32:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:32:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:32:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:32:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:32:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 22:32:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 22:32:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:10,544 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 22:32:10,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626949139] [2020-08-18 22:32:10,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:32:10,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 22:32:10,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808571130] [2020-08-18 22:32:10,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 22:32:10,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:32:10,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 22:32:10,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:32:10,547 INFO L87 Difference]: Start difference. First operand 673 states and 795 transitions. Second operand 18 states. [2020-08-18 22:32:11,306 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:32:11,627 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:32:11,909 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:32:12,151 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:32:12,794 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:32:13,728 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:14,046 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:14,319 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:14,605 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:14,936 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:15,220 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:15,808 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 22:32:16,409 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 22:32:18,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:32:18,252 INFO L93 Difference]: Finished difference Result 1422 states and 1767 transitions. [2020-08-18 22:32:18,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-18 22:32:18,253 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 107 [2020-08-18 22:32:18,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:32:18,259 INFO L225 Difference]: With dead ends: 1422 [2020-08-18 22:32:18,259 INFO L226 Difference]: Without dead ends: 777 [2020-08-18 22:32:18,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=503, Invalid=2149, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 22:32:18,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-08-18 22:32:18,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 654. [2020-08-18 22:32:18,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2020-08-18 22:32:18,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 763 transitions. [2020-08-18 22:32:18,445 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 763 transitions. Word has length 107 [2020-08-18 22:32:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:32:18,445 INFO L479 AbstractCegarLoop]: Abstraction has 654 states and 763 transitions. [2020-08-18 22:32:18,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 22:32:18,445 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 763 transitions. [2020-08-18 22:32:18,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-18 22:32:18,448 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:32:18,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:18,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:32:18,449 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:32:18,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:32:18,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1933824326, now seen corresponding path program 1 times [2020-08-18 22:32:18,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:32:18,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154690801] [2020-08-18 22:32:18,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:32:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,731 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:32:18,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:32:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:32:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:32:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:32:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:32:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:32:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:32:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:32:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:32:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:32:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:32:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 22:32:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 22:32:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 22:32:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:19,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:32:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:19,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:19,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 22:32:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:19,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-18 22:32:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 22:32:19,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154690801] [2020-08-18 22:32:19,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:32:19,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 22:32:19,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518049469] [2020-08-18 22:32:19,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 22:32:19,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:32:19,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 22:32:19,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 22:32:19,059 INFO L87 Difference]: Start difference. First operand 654 states and 763 transitions. Second operand 19 states. [2020-08-18 22:32:19,730 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:32:20,064 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:32:20,324 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:32:20,567 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:32:21,249 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:32:22,229 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:22,542 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:22,805 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:23,070 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:23,399 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:23,668 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:24,917 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:25,155 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:25,420 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:25,683 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:26,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:32:26,648 INFO L93 Difference]: Finished difference Result 1213 states and 1509 transitions. [2020-08-18 22:32:26,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-18 22:32:26,649 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 158 [2020-08-18 22:32:26,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:32:26,650 INFO L225 Difference]: With dead ends: 1213 [2020-08-18 22:32:26,651 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 22:32:26,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 22:32:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 22:32:26,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 22:32:26,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 22:32:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 22:32:26,657 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2020-08-18 22:32:26,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:32:26,658 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 22:32:26,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 22:32:26,658 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 22:32:26,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 22:32:26,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 22:32:26,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 22:32:27,494 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 32 [2020-08-18 22:32:27,691 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 206 [2020-08-18 22:32:27,949 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 32 [2020-08-18 22:32:28,259 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 206 [2020-08-18 22:32:29,538 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 261 [2020-08-18 22:32:31,018 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 206 [2020-08-18 22:32:31,149 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 203 [2020-08-18 22:32:32,333 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 274 [2020-08-18 22:32:32,905 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 270 [2020-08-18 22:32:33,902 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 261 [2020-08-18 22:32:34,225 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 18 [2020-08-18 22:32:34,739 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 16 [2020-08-18 22:32:34,920 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-18 22:32:35,097 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 25 [2020-08-18 22:32:35,284 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 25