/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:51:28,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:51:28,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:51:28,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:51:28,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:51:28,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:51:28,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:51:28,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:51:28,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:51:28,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:51:28,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:51:28,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:51:28,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:51:28,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:51:28,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:51:28,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:51:28,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:51:28,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:51:28,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:51:28,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:51:28,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:51:28,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:51:28,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:51:28,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:51:28,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:51:28,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:51:28,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:51:28,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:51:28,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:51:28,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:51:28,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:51:28,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:51:28,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:51:28,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:51:28,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:51:28,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:51:28,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:51:28,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:51:28,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:51:28,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:51:28,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:51:28,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 18:51:28,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:51:28,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:51:28,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:51:28,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:51:28,906 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:51:28,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:51:28,906 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:51:28,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:51:28,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:51:28,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:51:28,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:51:28,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:51:28,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:51:28,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:51:28,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:51:28,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:51:28,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:51:28,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:51:28,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:51:28,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:51:28,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:51:28,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:51:28,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:51:28,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:51:28,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:51:28,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:51:28,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:51:28,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:51:28,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:51:28,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:51:29,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:51:29,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:51:29,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:51:29,211 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:51:29,211 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:51:29,212 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-08-21 18:51:29,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2a27ce3e/92a6a9264c3145878776e3ea94436105/FLAGdcb5c2a66 [2020-08-21 18:51:29,790 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:51:29,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-08-21 18:51:29,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2a27ce3e/92a6a9264c3145878776e3ea94436105/FLAGdcb5c2a66 [2020-08-21 18:51:30,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2a27ce3e/92a6a9264c3145878776e3ea94436105 [2020-08-21 18:51:30,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:51:30,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:51:30,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:51:30,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:51:30,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:51:30,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8831ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30, skipping insertion in model container [2020-08-21 18:51:30,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:51:30,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:51:30,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:51:30,703 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:51:30,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:51:30,832 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:51:30,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30 WrapperNode [2020-08-21 18:51:30,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:51:30,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:51:30,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:51:30,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:51:30,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:51:30,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:51:30,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:51:30,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:51:30,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:51:30,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:51:30,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:51:30,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:51:30,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:51:30,991 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:51:30,992 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:51:30,992 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:51:30,992 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:51:30,992 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:51:30,993 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:51:30,993 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:51:30,993 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:51:30,993 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:51:30,993 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:51:30,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:51:30,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:51:30,995 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:51:30,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:51:30,995 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 18:51:30,995 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:51:30,996 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:51:30,996 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:51:30,997 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:51:30,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:51:30,998 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:51:30,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 18:51:30,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 18:51:30,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 18:51:31,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:51:31,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:51:31,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:51:31,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:51:31,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:51:31,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:51:31,001 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:51:31,001 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:51:31,001 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:51:31,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:51:31,002 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:51:31,002 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:51:31,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:51:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:51:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:51:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:51:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:51:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:51:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:51:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:51:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:51:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:51:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:51:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:51:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:51:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:51:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:51:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:51:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:51:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:51:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 18:51:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 18:51:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 18:51:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:51:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:51:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:51:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:51:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:51:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:51:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:51:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:51:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:51:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:51:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:51:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 18:51:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:51:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:51:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:51:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:51:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:51:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:51:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:51:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:51:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:51:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:51:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:51:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:51:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:51:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:51:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:51:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:51:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:51:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:51:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:51:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:51:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:51:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:51:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:51:32,022 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:51:32,022 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:51:32,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:51:32 BoogieIcfgContainer [2020-08-21 18:51:32,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:51:32,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:51:32,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:51:32,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:51:32,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:51:30" (1/3) ... [2020-08-21 18:51:32,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6b8272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:51:32, skipping insertion in model container [2020-08-21 18:51:32,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (2/3) ... [2020-08-21 18:51:32,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6b8272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:51:32, skipping insertion in model container [2020-08-21 18:51:32,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:51:32" (3/3) ... [2020-08-21 18:51:32,037 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product39.cil.c [2020-08-21 18:51:32,048 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:51:32,056 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:51:32,071 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:51:32,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:51:32,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:51:32,097 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:51:32,097 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:51:32,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:51:32,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:51:32,098 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:51:32,098 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:51:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-08-21 18:51:32,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 18:51:32,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:32,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:51:32,133 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:32,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:32,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1474572721, now seen corresponding path program 1 times [2020-08-21 18:51:32,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:32,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896564506] [2020-08-21 18:51:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,828 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:32,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:51:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:51:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:51:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:32,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896564506] [2020-08-21 18:51:32,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:32,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:51:32,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676537470] [2020-08-21 18:51:32,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:51:32,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:32,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:51:32,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:51:32,980 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 4 states. [2020-08-21 18:51:34,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:34,115 INFO L93 Difference]: Finished difference Result 314 states and 404 transitions. [2020-08-21 18:51:34,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:51:34,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 18:51:34,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:34,133 INFO L225 Difference]: With dead ends: 314 [2020-08-21 18:51:34,133 INFO L226 Difference]: Without dead ends: 173 [2020-08-21 18:51:34,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:51:34,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-21 18:51:34,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 142. [2020-08-21 18:51:34,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-08-21 18:51:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 167 transitions. [2020-08-21 18:51:34,263 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 167 transitions. Word has length 59 [2020-08-21 18:51:34,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:34,265 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 167 transitions. [2020-08-21 18:51:34,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:51:34,265 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 167 transitions. [2020-08-21 18:51:34,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 18:51:34,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:34,279 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:51:34,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:51:34,280 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:34,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:34,280 INFO L82 PathProgramCache]: Analyzing trace with hash -902835711, now seen corresponding path program 1 times [2020-08-21 18:51:34,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:34,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110579179] [2020-08-21 18:51:34,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,762 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:34,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:51:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 18:51:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 18:51:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:34,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110579179] [2020-08-21 18:51:34,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:34,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:51:34,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588166521] [2020-08-21 18:51:34,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:51:34,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:34,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:51:34,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:51:34,904 INFO L87 Difference]: Start difference. First operand 142 states and 167 transitions. Second operand 9 states. [2020-08-21 18:51:35,315 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:35,676 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:35,927 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:36,184 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:37,233 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:39,149 INFO L93 Difference]: Finished difference Result 481 states and 605 transitions. [2020-08-21 18:51:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 18:51:39,150 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 18:51:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:39,158 INFO L225 Difference]: With dead ends: 481 [2020-08-21 18:51:39,158 INFO L226 Difference]: Without dead ends: 367 [2020-08-21 18:51:39,161 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 [2020-08-21 18:51:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-08-21 18:51:39,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 313. [2020-08-21 18:51:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-08-21 18:51:39,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 384 transitions. [2020-08-21 18:51:39,250 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 384 transitions. Word has length 64 [2020-08-21 18:51:39,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:39,251 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 384 transitions. [2020-08-21 18:51:39,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:51:39,251 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 384 transitions. [2020-08-21 18:51:39,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 18:51:39,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:39,254 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] [2020-08-21 18:51:39,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:51:39,255 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:39,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:39,255 INFO L82 PathProgramCache]: Analyzing trace with hash -2087202736, now seen corresponding path program 1 times [2020-08-21 18:51:39,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:39,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911671445] [2020-08-21 18:51:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,668 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:39,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:51:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:51:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 18:51:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:51:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 18:51:39,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911671445] [2020-08-21 18:51:39,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:39,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:51:39,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052169003] [2020-08-21 18:51:39,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:51:39,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:39,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:51:39,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:51:39,826 INFO L87 Difference]: Start difference. First operand 313 states and 384 transitions. Second operand 9 states. [2020-08-21 18:51:40,229 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:40,812 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:41,751 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:42,123 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:42,564 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:42,807 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:43,613 INFO L93 Difference]: Finished difference Result 829 states and 1126 transitions. [2020-08-21 18:51:43,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 18:51:43,614 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 18:51:43,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:43,621 INFO L225 Difference]: With dead ends: 829 [2020-08-21 18:51:43,622 INFO L226 Difference]: Without dead ends: 544 [2020-08-21 18:51:43,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:51:43,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-08-21 18:51:43,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 454. [2020-08-21 18:51:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-21 18:51:43,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 573 transitions. [2020-08-21 18:51:43,759 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 573 transitions. Word has length 70 [2020-08-21 18:51:43,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:43,759 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 573 transitions. [2020-08-21 18:51:43,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:51:43,760 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 573 transitions. [2020-08-21 18:51:43,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 18:51:43,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:43,762 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] [2020-08-21 18:51:43,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:51:43,763 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:43,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:43,763 INFO L82 PathProgramCache]: Analyzing trace with hash 571882893, now seen corresponding path program 1 times [2020-08-21 18:51:43,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:43,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219221739] [2020-08-21 18:51:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,025 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:44,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:51:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:51:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:51:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:51:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 18:51:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:44,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219221739] [2020-08-21 18:51:44,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:44,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:51:44,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432462218] [2020-08-21 18:51:44,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:51:44,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:44,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:51:44,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:51:44,136 INFO L87 Difference]: Start difference. First operand 454 states and 573 transitions. Second operand 6 states. [2020-08-21 18:51:44,600 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:45,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:45,660 INFO L93 Difference]: Finished difference Result 810 states and 1016 transitions. [2020-08-21 18:51:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:51:45,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-08-21 18:51:45,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:45,666 INFO L225 Difference]: With dead ends: 810 [2020-08-21 18:51:45,667 INFO L226 Difference]: Without dead ends: 485 [2020-08-21 18:51:45,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:51:45,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-21 18:51:45,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 412. [2020-08-21 18:51:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-21 18:51:45,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 497 transitions. [2020-08-21 18:51:45,751 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 497 transitions. Word has length 88 [2020-08-21 18:51:45,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:45,751 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 497 transitions. [2020-08-21 18:51:45,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:51:45,752 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 497 transitions. [2020-08-21 18:51:45,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 18:51:45,753 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:45,753 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:51:45,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:51:45,754 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:45,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:45,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1962075473, now seen corresponding path program 1 times [2020-08-21 18:51:45,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:45,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239677828] [2020-08-21 18:51:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,014 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:46,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:51:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:51:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:51:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 18:51:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 18:51:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:46,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239677828] [2020-08-21 18:51:46,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:46,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:51:46,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980775280] [2020-08-21 18:51:46,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:51:46,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:46,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:51:46,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:51:46,214 INFO L87 Difference]: Start difference. First operand 412 states and 497 transitions. Second operand 9 states. [2020-08-21 18:51:46,532 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:47,581 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:47,820 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:51:48,098 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:48,354 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:49,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:49,364 INFO L93 Difference]: Finished difference Result 1234 states and 1655 transitions. [2020-08-21 18:51:49,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:51:49,365 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-21 18:51:49,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:49,373 INFO L225 Difference]: With dead ends: 1234 [2020-08-21 18:51:49,373 INFO L226 Difference]: Without dead ends: 850 [2020-08-21 18:51:49,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:51:49,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-21 18:51:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 727. [2020-08-21 18:51:49,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-08-21 18:51:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 881 transitions. [2020-08-21 18:51:49,556 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 881 transitions. Word has length 92 [2020-08-21 18:51:49,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:49,558 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 881 transitions. [2020-08-21 18:51:49,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:51:49,558 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 881 transitions. [2020-08-21 18:51:49,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 18:51:49,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:49,572 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:51:49,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:51:49,572 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:49,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:49,574 INFO L82 PathProgramCache]: Analyzing trace with hash 236594576, now seen corresponding path program 1 times [2020-08-21 18:51:49,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:49,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367265543] [2020-08-21 18:51:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,828 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:49,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:51:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:51:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:51:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 18:51:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 18:51:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:49,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367265543] [2020-08-21 18:51:49,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:49,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:51:49,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609611692] [2020-08-21 18:51:49,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:51:49,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:49,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:51:49,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:51:49,957 INFO L87 Difference]: Start difference. First operand 727 states and 881 transitions. Second operand 9 states. [2020-08-21 18:51:50,973 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:51,231 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:51:51,490 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:51,753 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:52,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:52,481 INFO L93 Difference]: Finished difference Result 1548 states and 1977 transitions. [2020-08-21 18:51:52,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:51:52,482 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-21 18:51:52,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:52,490 INFO L225 Difference]: With dead ends: 1548 [2020-08-21 18:51:52,490 INFO L226 Difference]: Without dead ends: 849 [2020-08-21 18:51:52,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:51:52,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-08-21 18:51:52,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 747. [2020-08-21 18:51:52,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-08-21 18:51:52,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 901 transitions. [2020-08-21 18:51:52,626 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 901 transitions. Word has length 92 [2020-08-21 18:51:52,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:52,626 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 901 transitions. [2020-08-21 18:51:52,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:51:52,626 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 901 transitions. [2020-08-21 18:51:52,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 18:51:52,629 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:52,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:51:52,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:51:52,629 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:52,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:52,630 INFO L82 PathProgramCache]: Analyzing trace with hash 938194450, now seen corresponding path program 1 times [2020-08-21 18:51:52,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:52,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838332231] [2020-08-21 18:51:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,884 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:51:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:51:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:53,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:53,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:51:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:53,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 18:51:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:53,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 18:51:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:53,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:53,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838332231] [2020-08-21 18:51:53,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:53,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 18:51:53,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241455584] [2020-08-21 18:51:53,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 18:51:53,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:53,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 18:51:53,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:51:53,063 INFO L87 Difference]: Start difference. First operand 747 states and 901 transitions. Second operand 11 states. [2020-08-21 18:51:53,604 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:53,837 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:54,078 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:54,822 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:55,076 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:55,320 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:56,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:56,207 INFO L93 Difference]: Finished difference Result 1410 states and 1790 transitions. [2020-08-21 18:51:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:51:56,208 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-21 18:51:56,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:56,213 INFO L225 Difference]: With dead ends: 1410 [2020-08-21 18:51:56,214 INFO L226 Difference]: Without dead ends: 691 [2020-08-21 18:51:56,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:51:56,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-08-21 18:51:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 618. [2020-08-21 18:51:56,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-08-21 18:51:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 727 transitions. [2020-08-21 18:51:56,343 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 727 transitions. Word has length 92 [2020-08-21 18:51:56,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:56,344 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 727 transitions. [2020-08-21 18:51:56,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 18:51:56,344 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 727 transitions. [2020-08-21 18:51:56,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 18:51:56,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:56,351 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:51:56,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:51:56,351 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:56,352 INFO L82 PathProgramCache]: Analyzing trace with hash -711915603, now seen corresponding path program 1 times [2020-08-21 18:51:56,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:56,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254858337] [2020-08-21 18:51:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,793 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:56,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:51:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 18:51:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 18:51:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:51:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:51:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 18:51:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:56,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254858337] [2020-08-21 18:51:56,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:56,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 18:51:56,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45604993] [2020-08-21 18:51:56,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:51:56,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:56,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:51:56,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:51:56,988 INFO L87 Difference]: Start difference. First operand 618 states and 727 transitions. Second operand 12 states. [2020-08-21 18:51:57,384 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:58,005 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:58,698 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:59,041 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:59,300 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:51:59,593 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:59,890 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:01,647 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:01,960 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:52:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:52:02,433 INFO L93 Difference]: Finished difference Result 1813 states and 2317 transitions. [2020-08-21 18:52:02,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 18:52:02,434 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-21 18:52:02,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:52:02,443 INFO L225 Difference]: With dead ends: 1813 [2020-08-21 18:52:02,443 INFO L226 Difference]: Without dead ends: 1405 [2020-08-21 18:52:02,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 18:52:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2020-08-21 18:52:02,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1271. [2020-08-21 18:52:02,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-08-21 18:52:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1497 transitions. [2020-08-21 18:52:02,642 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1497 transitions. Word has length 96 [2020-08-21 18:52:02,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:52:02,643 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1497 transitions. [2020-08-21 18:52:02,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:52:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1497 transitions. [2020-08-21 18:52:02,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 18:52:02,646 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:52:02,647 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:52:02,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:52:02,647 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:52:02,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:52:02,647 INFO L82 PathProgramCache]: Analyzing trace with hash 69794205, now seen corresponding path program 1 times [2020-08-21 18:52:02,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:52:02,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133907936] [2020-08-21 18:52:02,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:52:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,014 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:52:03,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:52:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:52:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:52:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:52:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:52:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 18:52:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 18:52:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 18:52:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:52:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 18:52:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-21 18:52:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 18:52:03,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133907936] [2020-08-21 18:52:03,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:52:03,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 18:52:03,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818927377] [2020-08-21 18:52:03,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 18:52:03,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:52:03,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 18:52:03,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:52:03,403 INFO L87 Difference]: Start difference. First operand 1271 states and 1497 transitions. Second operand 16 states. [2020-08-21 18:52:04,152 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:04,533 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 18:52:04,806 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 18:52:05,063 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 18:52:05,689 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:06,002 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:06,377 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:52:06,660 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:52:07,716 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:08,357 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:08,649 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:09,000 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:09,569 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:52:09,986 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:10,384 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:52:11,079 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:11,356 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:52:12,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:52:12,108 INFO L93 Difference]: Finished difference Result 2793 states and 3416 transitions. [2020-08-21 18:52:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-21 18:52:12,108 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 155 [2020-08-21 18:52:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:52:12,119 INFO L225 Difference]: With dead ends: 2793 [2020-08-21 18:52:12,119 INFO L226 Difference]: Without dead ends: 1726 [2020-08-21 18:52:12,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=605, Invalid=2257, Unknown=0, NotChecked=0, Total=2862 [2020-08-21 18:52:12,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2020-08-21 18:52:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1529. [2020-08-21 18:52:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1529 states. [2020-08-21 18:52:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 1785 transitions. [2020-08-21 18:52:12,383 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 1785 transitions. Word has length 155 [2020-08-21 18:52:12,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:52:12,384 INFO L479 AbstractCegarLoop]: Abstraction has 1529 states and 1785 transitions. [2020-08-21 18:52:12,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 18:52:12,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 1785 transitions. [2020-08-21 18:52:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-08-21 18:52:12,392 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:52:12,393 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:52:12,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:52:12,393 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:52:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:52:12,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1402201584, now seen corresponding path program 1 times [2020-08-21 18:52:12,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:52:12,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580724824] [2020-08-21 18:52:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:52:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,714 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:52:12,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:52:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:52:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:52:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:52:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:52:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 18:52:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:52:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:52:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:12,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-21 18:52:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:52:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:52:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-21 18:52:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-21 18:52:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-21 18:52:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:52:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-08-21 18:52:13,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580724824] [2020-08-21 18:52:13,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:52:13,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 18:52:13,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265897655] [2020-08-21 18:52:13,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 18:52:13,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:52:13,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 18:52:13,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:52:13,152 INFO L87 Difference]: Start difference. First operand 1529 states and 1785 transitions. Second operand 15 states. [2020-08-21 18:52:14,306 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:14,533 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:52:14,781 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:15,026 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:15,288 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:16,116 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:16,629 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 18:52:17,075 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 18:52:17,438 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:19,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:52:19,762 INFO L93 Difference]: Finished difference Result 4301 states and 5229 transitions. [2020-08-21 18:52:19,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 18:52:19,763 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 269 [2020-08-21 18:52:19,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:52:19,779 INFO L225 Difference]: With dead ends: 4301 [2020-08-21 18:52:19,780 INFO L226 Difference]: Without dead ends: 2605 [2020-08-21 18:52:19,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 18:52:19,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2020-08-21 18:52:20,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2205. [2020-08-21 18:52:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2205 states. [2020-08-21 18:52:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 2585 transitions. [2020-08-21 18:52:20,254 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 2585 transitions. Word has length 269 [2020-08-21 18:52:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:52:20,254 INFO L479 AbstractCegarLoop]: Abstraction has 2205 states and 2585 transitions. [2020-08-21 18:52:20,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 18:52:20,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 2585 transitions. [2020-08-21 18:52:20,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-08-21 18:52:20,262 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:52:20,263 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:52:20,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:52:20,263 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:52:20,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:52:20,264 INFO L82 PathProgramCache]: Analyzing trace with hash -692797707, now seen corresponding path program 1 times [2020-08-21 18:52:20,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:52:20,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283765360] [2020-08-21 18:52:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:52:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,558 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:52:20,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:52:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:52:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:52:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:52:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:52:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 18:52:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:52:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:52:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:52:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-21 18:52:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:52:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:52:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-21 18:52:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-21 18:52:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:52:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-21 18:52:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 85 proven. 36 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-08-21 18:52:20,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283765360] [2020-08-21 18:52:20,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:52:20,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 18:52:20,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280435350] [2020-08-21 18:52:20,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 18:52:20,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:52:20,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 18:52:20,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:52:20,968 INFO L87 Difference]: Start difference. First operand 2205 states and 2585 transitions. Second operand 16 states. [2020-08-21 18:52:21,465 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:21,789 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:52:22,039 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:22,290 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:22,963 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:23,959 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:24,279 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:24,532 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:25,145 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:26,064 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:26,299 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:27,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:52:27,029 INFO L93 Difference]: Finished difference Result 4208 states and 4993 transitions. [2020-08-21 18:52:27,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 18:52:27,029 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 275 [2020-08-21 18:52:27,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:52:27,041 INFO L225 Difference]: With dead ends: 4208 [2020-08-21 18:52:27,041 INFO L226 Difference]: Without dead ends: 2229 [2020-08-21 18:52:27,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 18:52:27,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2020-08-21 18:52:27,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 2158. [2020-08-21 18:52:27,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2158 states. [2020-08-21 18:52:27,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 2494 transitions. [2020-08-21 18:52:27,415 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 2494 transitions. Word has length 275 [2020-08-21 18:52:27,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:52:27,416 INFO L479 AbstractCegarLoop]: Abstraction has 2158 states and 2494 transitions. [2020-08-21 18:52:27,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 18:52:27,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 2494 transitions. [2020-08-21 18:52:27,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-08-21 18:52:27,423 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:52:27,424 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:52:27,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 18:52:27,424 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:52:27,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:52:27,424 INFO L82 PathProgramCache]: Analyzing trace with hash 841992575, now seen corresponding path program 1 times [2020-08-21 18:52:27,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:52:27,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413373791] [2020-08-21 18:52:27,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:52:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,794 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:52:27,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:52:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:52:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:52:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:52:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:27,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat