/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:04:21,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:04:21,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:04:21,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:04:21,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:04:21,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:04:21,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:04:21,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:04:21,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:04:21,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:04:21,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:04:21,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:04:21,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:04:21,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:04:21,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:04:21,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:04:21,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:04:21,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:04:21,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:04:21,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:04:21,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:04:21,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:04:21,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:04:21,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:04:21,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:04:21,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:04:21,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:04:21,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:04:21,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:04:21,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:04:21,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:04:21,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:04:21,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:04:21,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:04:21,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:04:21,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:04:21,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:04:21,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:04:21,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:04:21,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:04:21,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:04:21,845 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 [2020-08-19 01:04:21,887 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:04:21,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:04:21,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:04:21,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:04:21,892 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:04:21,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:04:21,892 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:04:21,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:04:21,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:04:21,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:04:21,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:04:21,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:04:21,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:04:21,893 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:04:21,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:04:21,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:04:21,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:04:21,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:04:21,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:04:21,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:04:21,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:04:21,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:04:21,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:04:21,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:04:21,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:04:21,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:04:21,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:04:21,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:04:21,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:04:21,897 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=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:04:22,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:04:22,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:04:22,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:04:22,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:04:22,243 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:04:22,244 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2020-08-19 01:04:22,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a37892553/e227d9a748fe4980af3b43d88d2d9370/FLAG4b5cc17ff [2020-08-19 01:04:22,847 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:04:22,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2020-08-19 01:04:22,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a37892553/e227d9a748fe4980af3b43d88d2d9370/FLAG4b5cc17ff [2020-08-19 01:04:23,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a37892553/e227d9a748fe4980af3b43d88d2d9370 [2020-08-19 01:04:23,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:04:23,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:04:23,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:04:23,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:04:23,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:04:23,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:04:23" (1/1) ... [2020-08-19 01:04:23,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ffe1817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:23, skipping insertion in model container [2020-08-19 01:04:23,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:04:23" (1/1) ... [2020-08-19 01:04:23,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:04:23,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:04:23,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:04:23,678 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:04:23,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:04:23,929 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:04:23,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:23 WrapperNode [2020-08-19 01:04:23,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:04:23,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:04:23,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:04:23,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:04:23,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:23" (1/1) ... [2020-08-19 01:04:23,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:23" (1/1) ... [2020-08-19 01:04:23,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:23" (1/1) ... [2020-08-19 01:04:23,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:23" (1/1) ... [2020-08-19 01:04:23,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:23" (1/1) ... [2020-08-19 01:04:24,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:23" (1/1) ... [2020-08-19 01:04:24,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:23" (1/1) ... [2020-08-19 01:04:24,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:04:24,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:04:24,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:04:24,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:04:24,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:23" (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 [2020-08-19 01:04:24,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:04:24,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:04:24,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:04:24,085 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:04:24,085 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:04:24,085 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:04:24,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:04:24,086 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:04:24,086 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:04:24,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:04:24,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 01:04:24,086 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:04:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:04:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:04:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 01:04:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:04:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:04:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:04:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:04:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:04:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:04:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:04:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 01:04:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 01:04:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 01:04:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:04:24,090 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:04:24,090 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:04:24,090 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:04:24,090 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:04:24,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:04:24,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:04:24,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:04:24,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:04:24,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:04:24,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:04:24,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:04:24,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:04:24,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:04:24,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:04:24,092 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:04:24,092 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:04:24,093 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:04:24,093 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:04:24,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:04:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:04:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:04:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:04:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:04:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:04:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:04:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:04:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:04:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:04:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:04:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 01:04:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:04:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:04:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:04:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:04:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:04:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:04:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 01:04:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 01:04:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:04:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:04:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:04:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:04:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:04:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:04:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 01:04:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 01:04:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:04:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:04:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:04:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:04:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:04:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:04:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:04:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:04:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:04:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:04:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:04:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:04:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:04:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:04:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:04:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:04:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:04:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:04:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:04:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:04:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:04:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:04:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:04:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:04:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:04:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:04:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:04:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:04:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:04:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:04:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:04:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:04:25,185 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:04:25,185 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:04:25,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:04:25 BoogieIcfgContainer [2020-08-19 01:04:25,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:04:25,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:04:25,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:04:25,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:04:25,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:04:23" (1/3) ... [2020-08-19 01:04:25,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2309ebce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:04:25, skipping insertion in model container [2020-08-19 01:04:25,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:23" (2/3) ... [2020-08-19 01:04:25,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2309ebce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:04:25, skipping insertion in model container [2020-08-19 01:04:25,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:04:25" (3/3) ... [2020-08-19 01:04:25,199 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2020-08-19 01:04:25,210 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:04:25,218 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:04:25,233 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:04:25,266 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:04:25,266 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:04:25,266 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:04:25,267 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:04:25,268 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:04:25,268 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:04:25,268 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:04:25,268 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:04:25,298 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states. [2020-08-19 01:04:25,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 01:04:25,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:25,317 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:04:25,318 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:25,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1747867680, now seen corresponding path program 1 times [2020-08-19 01:04:25,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:25,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489485473] [2020-08-19 01:04:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,033 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:26,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:04:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:04:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:26,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489485473] [2020-08-19 01:04:26,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:26,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:04:26,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560724790] [2020-08-19 01:04:26,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:04:26,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:26,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:04:26,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:04:26,191 INFO L87 Difference]: Start difference. First operand 209 states. Second operand 4 states. [2020-08-19 01:04:27,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:27,506 INFO L93 Difference]: Finished difference Result 366 states and 469 transitions. [2020-08-19 01:04:27,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:04:27,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 01:04:27,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:27,524 INFO L225 Difference]: With dead ends: 366 [2020-08-19 01:04:27,525 INFO L226 Difference]: Without dead ends: 201 [2020-08-19 01:04:27,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:04:27,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-08-19 01:04:27,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2020-08-19 01:04:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-19 01:04:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 196 transitions. [2020-08-19 01:04:27,677 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 196 transitions. Word has length 59 [2020-08-19 01:04:27,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:27,679 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 196 transitions. [2020-08-19 01:04:27,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:04:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 196 transitions. [2020-08-19 01:04:27,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 01:04:27,691 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:27,691 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:04:27,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:04:27,692 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:27,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:27,692 INFO L82 PathProgramCache]: Analyzing trace with hash 2102602730, now seen corresponding path program 1 times [2020-08-19 01:04:27,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:27,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532669668] [2020-08-19 01:04:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:28,103 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:28,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:28,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:28,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:28,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:28,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:28,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:28,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:04:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:28,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:28,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:04:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:28,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 01:04:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:28,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532669668] [2020-08-19 01:04:28,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:28,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:04:28,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737569179] [2020-08-19 01:04:28,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:04:28,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:28,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:04:28,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:04:28,212 INFO L87 Difference]: Start difference. First operand 166 states and 196 transitions. Second operand 5 states. [2020-08-19 01:04:28,790 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:29,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:29,928 INFO L93 Difference]: Finished difference Result 301 states and 369 transitions. [2020-08-19 01:04:29,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:04:29,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 01:04:29,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:29,935 INFO L225 Difference]: With dead ends: 301 [2020-08-19 01:04:29,935 INFO L226 Difference]: Without dead ends: 191 [2020-08-19 01:04:29,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:04:29,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-19 01:04:30,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2020-08-19 01:04:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-19 01:04:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2020-08-19 01:04:30,010 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 60 [2020-08-19 01:04:30,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:30,011 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2020-08-19 01:04:30,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:04:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2020-08-19 01:04:30,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 01:04:30,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:30,016 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:04:30,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:04:30,016 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:30,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:30,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1388581610, now seen corresponding path program 1 times [2020-08-19 01:04:30,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:30,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935151603] [2020-08-19 01:04:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,454 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:30,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:04:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 01:04:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:30,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935151603] [2020-08-19 01:04:30,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:30,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:04:30,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043111717] [2020-08-19 01:04:30,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:04:30,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:30,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:04:30,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:04:30,618 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand 9 states. [2020-08-19 01:04:31,067 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:31,386 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:31,643 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:31,903 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:32,812 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:35,119 INFO L93 Difference]: Finished difference Result 524 states and 649 transitions. [2020-08-19 01:04:35,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:04:35,120 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-19 01:04:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:35,126 INFO L225 Difference]: With dead ends: 524 [2020-08-19 01:04:35,126 INFO L226 Difference]: Without dead ends: 395 [2020-08-19 01:04:35,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:04:35,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-08-19 01:04:35,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 330. [2020-08-19 01:04:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-08-19 01:04:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 400 transitions. [2020-08-19 01:04:35,201 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 400 transitions. Word has length 65 [2020-08-19 01:04:35,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:35,202 INFO L479 AbstractCegarLoop]: Abstraction has 330 states and 400 transitions. [2020-08-19 01:04:35,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:04:35,202 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 400 transitions. [2020-08-19 01:04:35,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 01:04:35,204 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:35,204 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:04:35,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:04:35,205 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:35,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:35,205 INFO L82 PathProgramCache]: Analyzing trace with hash -262157671, now seen corresponding path program 1 times [2020-08-19 01:04:35,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:35,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781467261] [2020-08-19 01:04:35,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:35,499 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:35,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:35,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:35,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:35,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:35,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:35,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:35,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:04:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:04:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:35,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:35,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 01:04:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:35,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:04:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 01:04:35,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781467261] [2020-08-19 01:04:35,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:35,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:04:35,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350301773] [2020-08-19 01:04:35,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:04:35,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:35,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:04:35,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:04:35,660 INFO L87 Difference]: Start difference. First operand 330 states and 400 transitions. Second operand 9 states. [2020-08-19 01:04:36,118 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:36,858 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:37,759 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:38,065 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:38,325 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:38,596 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:39,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:39,587 INFO L93 Difference]: Finished difference Result 843 states and 1098 transitions. [2020-08-19 01:04:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:04:39,588 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 01:04:39,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:39,594 INFO L225 Difference]: With dead ends: 843 [2020-08-19 01:04:39,594 INFO L226 Difference]: Without dead ends: 541 [2020-08-19 01:04:39,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:04:39,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-08-19 01:04:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 473. [2020-08-19 01:04:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-08-19 01:04:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 569 transitions. [2020-08-19 01:04:39,691 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 569 transitions. Word has length 70 [2020-08-19 01:04:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:39,691 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 569 transitions. [2020-08-19 01:04:39,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:04:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 569 transitions. [2020-08-19 01:04:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 01:04:39,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:39,694 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] [2020-08-19 01:04:39,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:04:39,694 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:39,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:39,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1621424268, now seen corresponding path program 1 times [2020-08-19 01:04:39,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:39,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848411257] [2020-08-19 01:04:39,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:39,957 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:39,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:39,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:39,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:39,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:39,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:39,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:39,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:04:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 01:04:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:04:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:40,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848411257] [2020-08-19 01:04:40,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:40,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:04:40,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639978138] [2020-08-19 01:04:40,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:04:40,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:40,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:04:40,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:04:40,100 INFO L87 Difference]: Start difference. First operand 473 states and 569 transitions. Second operand 9 states. [2020-08-19 01:04:41,267 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:41,505 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:41,767 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:42,014 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:43,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:43,038 INFO L93 Difference]: Finished difference Result 1007 states and 1277 transitions. [2020-08-19 01:04:43,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:04:43,039 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-19 01:04:43,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:43,044 INFO L225 Difference]: With dead ends: 1007 [2020-08-19 01:04:43,044 INFO L226 Difference]: Without dead ends: 562 [2020-08-19 01:04:43,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:04:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-08-19 01:04:43,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 486. [2020-08-19 01:04:43,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-19 01:04:43,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2020-08-19 01:04:43,170 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 98 [2020-08-19 01:04:43,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:43,170 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2020-08-19 01:04:43,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:04:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2020-08-19 01:04:43,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 01:04:43,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:43,178 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] [2020-08-19 01:04:43,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:04:43,178 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:43,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:43,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1693810826, now seen corresponding path program 1 times [2020-08-19 01:04:43,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:43,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552583745] [2020-08-19 01:04:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,476 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:43,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:04:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 01:04:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:04:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:43,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552583745] [2020-08-19 01:04:43,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:43,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:04:43,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664063606] [2020-08-19 01:04:43,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:04:43,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:43,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:04:43,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:04:43,626 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 11 states. [2020-08-19 01:04:44,364 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:44,596 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:44,821 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:45,664 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:45,946 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:46,219 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:47,284 INFO L93 Difference]: Finished difference Result 1034 states and 1330 transitions. [2020-08-19 01:04:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:04:47,285 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-19 01:04:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:47,289 INFO L225 Difference]: With dead ends: 1034 [2020-08-19 01:04:47,289 INFO L226 Difference]: Without dead ends: 576 [2020-08-19 01:04:47,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:04:47,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-19 01:04:47,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 494. [2020-08-19 01:04:47,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-08-19 01:04:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 591 transitions. [2020-08-19 01:04:47,372 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 591 transitions. Word has length 98 [2020-08-19 01:04:47,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:47,373 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 591 transitions. [2020-08-19 01:04:47,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:04:47,373 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 591 transitions. [2020-08-19 01:04:47,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 01:04:47,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:47,375 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] [2020-08-19 01:04:47,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:04:47,376 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:47,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:47,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1364045065, now seen corresponding path program 1 times [2020-08-19 01:04:47,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:47,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488060188] [2020-08-19 01:04:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,626 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:47,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:04:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 01:04:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:04:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:47,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:47,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488060188] [2020-08-19 01:04:47,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:47,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:04:47,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053701551] [2020-08-19 01:04:47,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:04:47,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:47,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:04:47,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:04:47,801 INFO L87 Difference]: Start difference. First operand 494 states and 591 transitions. Second operand 7 states. [2020-08-19 01:04:48,241 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:48,768 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:51,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:51,092 INFO L93 Difference]: Finished difference Result 1535 states and 1984 transitions. [2020-08-19 01:04:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:04:51,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-19 01:04:51,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:51,099 INFO L225 Difference]: With dead ends: 1535 [2020-08-19 01:04:51,099 INFO L226 Difference]: Without dead ends: 1069 [2020-08-19 01:04:51,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:04:51,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2020-08-19 01:04:51,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 991. [2020-08-19 01:04:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-08-19 01:04:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1203 transitions. [2020-08-19 01:04:51,305 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1203 transitions. Word has length 98 [2020-08-19 01:04:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:51,307 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1203 transitions. [2020-08-19 01:04:51,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:04:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1203 transitions. [2020-08-19 01:04:51,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-19 01:04:51,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:51,312 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] [2020-08-19 01:04:51,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:04:51,312 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:51,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:51,313 INFO L82 PathProgramCache]: Analyzing trace with hash 884836017, now seen corresponding path program 1 times [2020-08-19 01:04:51,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:51,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720735736] [2020-08-19 01:04:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,655 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:51,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:04:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 01:04:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 01:04:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 01:04:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:51,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720735736] [2020-08-19 01:04:51,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:51,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:04:51,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023764160] [2020-08-19 01:04:51,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:04:51,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:51,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:04:51,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:04:51,867 INFO L87 Difference]: Start difference. First operand 991 states and 1203 transitions. Second operand 12 states. [2020-08-19 01:04:52,391 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:53,022 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:53,683 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:53,995 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:54,221 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:54,509 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:54,794 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:56,794 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:57,149 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:57,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:57,792 INFO L93 Difference]: Finished difference Result 2813 states and 3636 transitions. [2020-08-19 01:04:57,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 01:04:57,793 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2020-08-19 01:04:57,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:57,807 INFO L225 Difference]: With dead ends: 2813 [2020-08-19 01:04:57,807 INFO L226 Difference]: Without dead ends: 2052 [2020-08-19 01:04:57,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 01:04:57,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2020-08-19 01:04:58,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1740. [2020-08-19 01:04:58,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1740 states. [2020-08-19 01:04:58,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2094 transitions. [2020-08-19 01:04:58,239 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2094 transitions. Word has length 102 [2020-08-19 01:04:58,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:58,239 INFO L479 AbstractCegarLoop]: Abstraction has 1740 states and 2094 transitions. [2020-08-19 01:04:58,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:04:58,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2094 transitions. [2020-08-19 01:04:58,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-08-19 01:04:58,244 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:58,244 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:04:58,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:04:58,245 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:58,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:58,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1627137653, now seen corresponding path program 1 times [2020-08-19 01:04:58,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:58,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233612032] [2020-08-19 01:04:58,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,599 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:04:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:04:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:04:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 01:04:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 01:04:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-19 01:04:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:04:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:04:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-19 01:04:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-19 01:04:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 01:04:58,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233612032] [2020-08-19 01:04:58,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:04:58,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:04:58,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546599229] [2020-08-19 01:04:58,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:04:58,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:58,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:04:58,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:04:58,981 INFO L87 Difference]: Start difference. First operand 1740 states and 2094 transitions. Second operand 16 states. [2020-08-19 01:04:59,709 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:00,091 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:05:00,346 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:05:00,603 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:05:01,265 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:05:01,625 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:05:02,032 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:05:02,316 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:05:03,499 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:05:04,212 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:04,562 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:04,898 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:05,536 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:05:05,956 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:06,737 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:07,019 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:05:07,650 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:05:08,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:05:08,504 INFO L93 Difference]: Finished difference Result 3741 states and 4632 transitions. [2020-08-19 01:05:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-19 01:05:08,505 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 180 [2020-08-19 01:05:08,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:05:08,519 INFO L225 Difference]: With dead ends: 3741 [2020-08-19 01:05:08,519 INFO L226 Difference]: Without dead ends: 2219 [2020-08-19 01:05:08,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-19 01:05:08,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2020-08-19 01:05:08,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2027. [2020-08-19 01:05:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2027 states. [2020-08-19 01:05:08,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 2384 transitions. [2020-08-19 01:05:08,892 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 2384 transitions. Word has length 180 [2020-08-19 01:05:08,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:05:08,892 INFO L479 AbstractCegarLoop]: Abstraction has 2027 states and 2384 transitions. [2020-08-19 01:05:08,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 01:05:08,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 2384 transitions. [2020-08-19 01:05:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-08-19 01:05:08,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:05:08,903 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:05:08,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:05:08,904 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:05:08,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:05:08,904 INFO L82 PathProgramCache]: Analyzing trace with hash -489961037, now seen corresponding path program 1 times [2020-08-19 01:05:08,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:05:08,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630817623] [2020-08-19 01:05:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:05:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,346 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:05:09,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:05:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:05:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:05:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:05:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:05:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:05:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:05:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:05:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:05:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 01:05:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:05:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:05:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:05:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 01:05:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 01:05:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:05:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:05:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 01:05:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-19 01:05:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-19 01:05:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-19 01:05:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:05:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-08-19 01:05:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:09,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-19 01:05:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-08-19 01:05:10,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630817623] [2020-08-19 01:05:10,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:05:10,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 01:05:10,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508855756] [2020-08-19 01:05:10,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:05:10,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:05:10,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:05:10,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:05:10,150 INFO L87 Difference]: Start difference. First operand 2027 states and 2384 transitions. Second operand 15 states. [2020-08-19 01:05:11,685 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:05:11,946 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:12,185 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:12,451 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:05:13,487 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:15,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:05:15,630 INFO L93 Difference]: Finished difference Result 5499 states and 6729 transitions. [2020-08-19 01:05:15,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 01:05:15,630 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 305 [2020-08-19 01:05:15,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:05:15,649 INFO L225 Difference]: With dead ends: 5499 [2020-08-19 01:05:15,649 INFO L226 Difference]: Without dead ends: 3170 [2020-08-19 01:05:15,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-19 01:05:15,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2020-08-19 01:05:16,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2752. [2020-08-19 01:05:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2752 states. [2020-08-19 01:05:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 3317 transitions. [2020-08-19 01:05:16,241 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 3317 transitions. Word has length 305 [2020-08-19 01:05:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:05:16,242 INFO L479 AbstractCegarLoop]: Abstraction has 2752 states and 3317 transitions. [2020-08-19 01:05:16,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 01:05:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 3317 transitions. [2020-08-19 01:05:16,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-08-19 01:05:16,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:05:16,255 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:05:16,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:05:16,255 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:05:16,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:05:16,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1328316146, now seen corresponding path program 1 times [2020-08-19 01:05:16,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:05:16,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668764065] [2020-08-19 01:05:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:05:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,585 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:05:16,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:05:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:05:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:05:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:05:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:05:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:05:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:05:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:05:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:05:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 01:05:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:05:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:05:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:05:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 01:05:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:05:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-19 01:05:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:05:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:05:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 01:05:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-19 01:05:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-19 01:05:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:05:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-19 01:05:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:16,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 01:05:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 90 proven. 42 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-08-19 01:05:17,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668764065] [2020-08-19 01:05:17,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:05:17,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:05:17,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641034289] [2020-08-19 01:05:17,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:05:17,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:05:17,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:05:17,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:05:17,111 INFO L87 Difference]: Start difference. First operand 2752 states and 3317 transitions. Second operand 16 states. [2020-08-19 01:05:17,821 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:05:18,138 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:18,410 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:18,665 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:19,407 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191