/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:42:43,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:42:43,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:42:43,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:42:43,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:42:43,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:42:43,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:42:43,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:42:43,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:42:43,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:42:43,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:42:43,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:42:43,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:42:43,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:42:43,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:42:43,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:42:43,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:42:43,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:42:43,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:42:43,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:42:43,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:42:43,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:42:43,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:42:43,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:42:43,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:42:43,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:42:43,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:42:43,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:42:43,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:42:43,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:42:43,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:42:43,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:42:43,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:42:43,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:42:43,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:42:43,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:42:43,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:42:43,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:42:43,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:42:43,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:42:43,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:42:43,571 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 [2020-09-24 14:42:43,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:42:43,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:42:43,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:42:43,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:42:43,619 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:42:43,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:42:43,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:42:43,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:42:43,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:42:43,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:42:43,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:42:43,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:42:43,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:42:43,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:42:43,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:42:43,623 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:42:43,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:42:43,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:42:43,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:42:43,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:42:43,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:42:43,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:42:43,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:42:43,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:42:43,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:42:43,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:42:43,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:42:43,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:42:43,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:42:43,626 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:42:44,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:42:44,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:42:44,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:42:44,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:42:44,121 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:42:44,122 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-09-24 14:42:44,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84e6d417c/9e3df5ab45e049d7b573389e77cc8f95/FLAG4a90d2006 [2020-09-24 14:42:44,898 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:42:44,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-09-24 14:42:44,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84e6d417c/9e3df5ab45e049d7b573389e77cc8f95/FLAG4a90d2006 [2020-09-24 14:42:45,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84e6d417c/9e3df5ab45e049d7b573389e77cc8f95 [2020-09-24 14:42:45,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:42:45,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:42:45,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:42:45,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:42:45,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:42:45,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:42:45" (1/1) ... [2020-09-24 14:42:45,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256ae262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:45, skipping insertion in model container [2020-09-24 14:42:45,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:42:45" (1/1) ... [2020-09-24 14:42:45,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:42:45,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:42:45,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:42:45,736 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:42:45,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:42:45,886 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:42:45,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:45 WrapperNode [2020-09-24 14:42:45,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:42:45,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:42:45,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:42:45,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:42:45,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:45" (1/1) ... [2020-09-24 14:42:45,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:45" (1/1) ... [2020-09-24 14:42:45,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:45" (1/1) ... [2020-09-24 14:42:45,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:45" (1/1) ... [2020-09-24 14:42:45,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:45" (1/1) ... [2020-09-24 14:42:45,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:45" (1/1) ... [2020-09-24 14:42:45,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:45" (1/1) ... [2020-09-24 14:42:45,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:42:45,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:42:45,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:42:45,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:42:45,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:45" (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 [2020-09-24 14:42:46,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:42:46,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:42:46,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 14:42:46,056 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 14:42:46,056 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 14:42:46,056 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 14:42:46,056 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 14:42:46,056 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 14:42:46,057 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 14:42:46,057 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 14:42:46,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 14:42:46,057 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 14:42:46,057 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 14:42:46,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 14:42:46,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 14:42:46,058 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 14:42:46,058 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 14:42:46,058 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 14:42:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 14:42:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 14:42:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 14:42:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 14:42:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 14:42:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 14:42:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 14:42:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 14:42:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 14:42:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 14:42:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 14:42:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 14:42:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 14:42:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 14:42:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 14:42:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 14:42:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 14:42:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-24 14:42:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-24 14:42:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 14:42:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 14:42:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 14:42:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 14:42:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:42:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 14:42:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:42:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:42:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 14:42:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 14:42:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 14:42:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 14:42:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 14:42:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 14:42:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 14:42:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 14:42:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 14:42:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 14:42:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 14:42:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 14:42:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 14:42:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:42:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 14:42:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 14:42:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 14:42:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 14:42:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 14:42:46,067 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 14:42:46,067 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 14:42:46,067 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 14:42:46,067 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-24 14:42:46,067 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 14:42:46,067 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 14:42:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 14:42:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 14:42:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 14:42:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 14:42:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 14:42:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 14:42:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 14:42:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 14:42:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 14:42:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 14:42:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 14:42:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:42:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 14:42:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 14:42:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:42:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 14:42:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 14:42:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:42:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 14:42:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 14:42:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 14:42:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 14:42:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-24 14:42:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 14:42:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 14:42:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 14:42:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:42:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:42:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 14:42:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:42:47,252 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:42:47,253 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 14:42:47,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:42:47 BoogieIcfgContainer [2020-09-24 14:42:47,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:42:47,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:42:47,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:42:47,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:42:47,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:42:45" (1/3) ... [2020-09-24 14:42:47,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ac21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:42:47, skipping insertion in model container [2020-09-24 14:42:47,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:45" (2/3) ... [2020-09-24 14:42:47,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ac21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:42:47, skipping insertion in model container [2020-09-24 14:42:47,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:42:47" (3/3) ... [2020-09-24 14:42:47,270 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product55.cil.c [2020-09-24 14:42:47,281 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:42:47,293 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:42:47,315 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:42:47,346 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:42:47,346 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:42:47,346 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:42:47,346 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:42:47,346 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:42:47,347 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:42:47,347 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:42:47,347 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:42:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-09-24 14:42:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 14:42:47,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:47,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:47,398 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:47,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:47,405 INFO L82 PathProgramCache]: Analyzing trace with hash -415680263, now seen corresponding path program 1 times [2020-09-24 14:42:47,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:47,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945573226] [2020-09-24 14:42:47,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:48,222 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:48,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:48,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:48,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:48,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:48,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:48,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:48,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:42:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:48,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 14:42:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:48,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945573226] [2020-09-24 14:42:48,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:48,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:42:48,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729002081] [2020-09-24 14:42:48,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:42:48,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:48,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:42:48,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:42:48,403 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 4 states. [2020-09-24 14:42:49,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:49,855 INFO L93 Difference]: Finished difference Result 559 states and 665 transitions. [2020-09-24 14:42:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:42:49,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-24 14:42:49,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:49,879 INFO L225 Difference]: With dead ends: 559 [2020-09-24 14:42:49,879 INFO L226 Difference]: Without dead ends: 348 [2020-09-24 14:42:49,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:42:49,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-09-24 14:42:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 296. [2020-09-24 14:42:49,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-09-24 14:42:49,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 326 transitions. [2020-09-24 14:42:50,000 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 326 transitions. Word has length 148 [2020-09-24 14:42:50,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:50,001 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 326 transitions. [2020-09-24 14:42:50,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:42:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 326 transitions. [2020-09-24 14:42:50,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 14:42:50,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:50,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:50,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:42:50,008 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:50,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:50,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1732114662, now seen corresponding path program 1 times [2020-09-24 14:42:50,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:50,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903670145] [2020-09-24 14:42:50,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,447 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:50,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 14:42:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 14:42:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:50,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903670145] [2020-09-24 14:42:50,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:50,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:42:50,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816106001] [2020-09-24 14:42:50,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:42:50,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:50,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:42:50,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:42:50,581 INFO L87 Difference]: Start difference. First operand 296 states and 326 transitions. Second operand 5 states. [2020-09-24 14:42:51,315 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:52,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:52,695 INFO L93 Difference]: Finished difference Result 482 states and 552 transitions. [2020-09-24 14:42:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 14:42:52,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-24 14:42:52,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:52,701 INFO L225 Difference]: With dead ends: 482 [2020-09-24 14:42:52,701 INFO L226 Difference]: Without dead ends: 337 [2020-09-24 14:42:52,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:42:52,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-09-24 14:42:52,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 286. [2020-09-24 14:42:52,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-09-24 14:42:52,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 313 transitions. [2020-09-24 14:42:52,752 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 313 transitions. Word has length 149 [2020-09-24 14:42:52,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:52,753 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 313 transitions. [2020-09-24 14:42:52,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:42:52,753 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 313 transitions. [2020-09-24 14:42:52,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 14:42:52,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:52,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:52,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:42:52,757 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:52,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:52,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1476676505, now seen corresponding path program 1 times [2020-09-24 14:42:52,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:52,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478621359] [2020-09-24 14:42:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:53,185 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:53,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:53,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:53,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:53,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:53,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:53,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 14:42:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:53,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 14:42:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:53,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478621359] [2020-09-24 14:42:53,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:53,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 14:42:53,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000640429] [2020-09-24 14:42:53,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 14:42:53,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:53,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 14:42:53,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:42:53,474 INFO L87 Difference]: Start difference. First operand 286 states and 313 transitions. Second operand 10 states. [2020-09-24 14:42:54,149 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:54,471 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:42:54,786 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:42:55,106 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:55,413 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:42:55,718 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:56,860 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:59,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:59,823 INFO L93 Difference]: Finished difference Result 777 states and 908 transitions. [2020-09-24 14:42:59,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 14:42:59,824 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-09-24 14:42:59,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:59,830 INFO L225 Difference]: With dead ends: 777 [2020-09-24 14:42:59,830 INFO L226 Difference]: Without dead ends: 606 [2020-09-24 14:42:59,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-24 14:42:59,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-09-24 14:42:59,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 525. [2020-09-24 14:42:59,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2020-09-24 14:42:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 594 transitions. [2020-09-24 14:42:59,959 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 594 transitions. Word has length 158 [2020-09-24 14:42:59,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:59,960 INFO L479 AbstractCegarLoop]: Abstraction has 525 states and 594 transitions. [2020-09-24 14:42:59,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 14:42:59,960 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 594 transitions. [2020-09-24 14:42:59,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 14:42:59,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:59,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:59,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:42:59,965 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:59,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:59,965 INFO L82 PathProgramCache]: Analyzing trace with hash 309694267, now seen corresponding path program 1 times [2020-09-24 14:42:59,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:59,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020251206] [2020-09-24 14:42:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:43:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:00,345 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:43:00,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:43:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:00,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:43:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:00,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:43:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:00,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:43:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:00,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:43:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:00,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:43:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:00,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-24 14:43:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:00,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 14:43:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-24 14:43:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:43:00,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020251206] [2020-09-24 14:43:00,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:43:00,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 14:43:00,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736007083] [2020-09-24 14:43:00,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 14:43:00,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:43:00,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 14:43:00,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:43:00,516 INFO L87 Difference]: Start difference. First operand 525 states and 594 transitions. Second operand 10 states. [2020-09-24 14:43:01,096 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:43:02,296 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:43:02,653 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:43:03,140 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:43:03,459 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:43:04,080 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:43:04,492 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:43:04,806 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:43:05,385 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:43:06,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:43:06,959 INFO L93 Difference]: Finished difference Result 1474 states and 1786 transitions. [2020-09-24 14:43:06,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 14:43:06,960 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-09-24 14:43:06,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:43:06,969 INFO L225 Difference]: With dead ends: 1474 [2020-09-24 14:43:06,969 INFO L226 Difference]: Without dead ends: 1064 [2020-09-24 14:43:06,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-09-24 14:43:06,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2020-09-24 14:43:07,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 887. [2020-09-24 14:43:07,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 887 states. [2020-09-24 14:43:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1017 transitions. [2020-09-24 14:43:07,124 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1017 transitions. Word has length 167 [2020-09-24 14:43:07,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:43:07,124 INFO L479 AbstractCegarLoop]: Abstraction has 887 states and 1017 transitions. [2020-09-24 14:43:07,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 14:43:07,125 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1017 transitions. [2020-09-24 14:43:07,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 14:43:07,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:43:07,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:43:07,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:43:07,130 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:43:07,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:43:07,131 INFO L82 PathProgramCache]: Analyzing trace with hash 2125986584, now seen corresponding path program 1 times [2020-09-24 14:43:07,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:43:07,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370799257] [2020-09-24 14:43:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:43:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:07,508 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:43:07,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:43:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:43:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:07,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:43:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:43:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:07,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:43:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:07,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:43:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:07,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:43:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:07,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-24 14:43:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:07,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 14:43:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:07,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 14:43:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:43:07,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370799257] [2020-09-24 14:43:07,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:43:07,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 14:43:07,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089430949] [2020-09-24 14:43:07,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 14:43:07,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:43:07,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 14:43:07,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:43:07,722 INFO L87 Difference]: Start difference. First operand 887 states and 1017 transitions. Second operand 11 states. [2020-09-24 14:43:08,373 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:43:09,875 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:43:10,129 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:43:10,471 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:43:10,851 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:43:11,190 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:43:12,049 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:43:12,399 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:43:12,781 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:43:14,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:43:14,357 INFO L93 Difference]: Finished difference Result 2270 states and 2829 transitions. [2020-09-24 14:43:14,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 14:43:14,358 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2020-09-24 14:43:14,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:43:14,368 INFO L225 Difference]: With dead ends: 2270 [2020-09-24 14:43:14,368 INFO L226 Difference]: Without dead ends: 1498 [2020-09-24 14:43:14,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 14:43:14,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-09-24 14:43:14,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1209. [2020-09-24 14:43:14,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2020-09-24 14:43:14,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1387 transitions. [2020-09-24 14:43:14,521 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1387 transitions. Word has length 172 [2020-09-24 14:43:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:43:14,521 INFO L479 AbstractCegarLoop]: Abstraction has 1209 states and 1387 transitions. [2020-09-24 14:43:14,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 14:43:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1387 transitions. [2020-09-24 14:43:14,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-24 14:43:14,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:43:14,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:43:14,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:43:14,527 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:43:14,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:43:14,527 INFO L82 PathProgramCache]: Analyzing trace with hash -153528691, now seen corresponding path program 1 times [2020-09-24 14:43:14,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:43:14,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774785562] [2020-09-24 14:43:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:43:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,856 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:43:14,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:43:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:43:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:43:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:43:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:43:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:43:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:43:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 14:43:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:14,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:43:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:43:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-24 14:43:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-09-24 14:43:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:43:15,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774785562] [2020-09-24 14:43:15,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:43:15,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 14:43:15,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012727208] [2020-09-24 14:43:15,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 14:43:15,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:43:15,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 14:43:15,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:43:15,105 INFO L87 Difference]: Start difference. First operand 1209 states and 1387 transitions. Second operand 11 states. [2020-09-24 14:43:16,725 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:43:17,070 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:43:17,432 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-24 14:43:17,781 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:43:18,129 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:43:18,466 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:43:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:43:20,074 INFO L93 Difference]: Finished difference Result 2734 states and 3350 transitions. [2020-09-24 14:43:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 14:43:20,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 206 [2020-09-24 14:43:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:43:20,085 INFO L225 Difference]: With dead ends: 2734 [2020-09-24 14:43:20,085 INFO L226 Difference]: Without dead ends: 1640 [2020-09-24 14:43:20,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-24 14:43:20,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2020-09-24 14:43:20,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1247. [2020-09-24 14:43:20,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-09-24 14:43:20,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1427 transitions. [2020-09-24 14:43:20,321 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1427 transitions. Word has length 206 [2020-09-24 14:43:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:43:20,322 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1427 transitions. [2020-09-24 14:43:20,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 14:43:20,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1427 transitions. [2020-09-24 14:43:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-24 14:43:20,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:43:20,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:43:20,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:43:20,330 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:43:20,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:43:20,331 INFO L82 PathProgramCache]: Analyzing trace with hash -215857427, now seen corresponding path program 1 times [2020-09-24 14:43:20,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:43:20,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424848731] [2020-09-24 14:43:20,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:43:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,674 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:43:20,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:43:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:43:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:43:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:43:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:43:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:43:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:43:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 14:43:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:43:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:43:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-24 14:43:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-09-24 14:43:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:43:20,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424848731] [2020-09-24 14:43:20,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:43:20,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 14:43:20,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838146784] [2020-09-24 14:43:20,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 14:43:20,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:43:20,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 14:43:20,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 14:43:20,999 INFO L87 Difference]: Start difference. First operand 1247 states and 1427 transitions. Second operand 14 states. [2020-09-24 14:43:21,687 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:43:22,010 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:43:22,301 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:43:22,596 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:43:22,892 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:43:24,001 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:43:24,320 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:43:24,667 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:43:25,026 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:43:25,345 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:43:27,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:43:27,215 INFO L93 Difference]: Finished difference Result 2816 states and 3495 transitions. [2020-09-24 14:43:27,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 14:43:27,216 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 206 [2020-09-24 14:43:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:43:27,226 INFO L225 Difference]: With dead ends: 2816 [2020-09-24 14:43:27,227 INFO L226 Difference]: Without dead ends: 1684 [2020-09-24 14:43:27,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-24 14:43:27,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2020-09-24 14:43:27,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1271. [2020-09-24 14:43:27,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-09-24 14:43:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1451 transitions. [2020-09-24 14:43:27,453 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1451 transitions. Word has length 206 [2020-09-24 14:43:27,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:43:27,454 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1451 transitions. [2020-09-24 14:43:27,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 14:43:27,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1451 transitions. [2020-09-24 14:43:27,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-24 14:43:27,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:43:27,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:43:27,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:43:27,460 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:43:27,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:43:27,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1924048490, now seen corresponding path program 1 times [2020-09-24 14:43:27,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:43:27,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214507598] [2020-09-24 14:43:27,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:43:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,839 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:43:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:43:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:43:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:43:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:43:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:43:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:43:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:43:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 14:43:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:27,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:28,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:28,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:43:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:28,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:43:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:28,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-24 14:43:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:28,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-09-24 14:43:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:43:28,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214507598] [2020-09-24 14:43:28,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:43:28,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 14:43:28,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470196298] [2020-09-24 14:43:28,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 14:43:28,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:43:28,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 14:43:28,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 14:43:28,135 INFO L87 Difference]: Start difference. First operand 1271 states and 1451 transitions. Second operand 8 states. [2020-09-24 14:43:28,713 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:43:29,390 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:43:33,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:43:33,208 INFO L93 Difference]: Finished difference Result 4207 states and 5250 transitions. [2020-09-24 14:43:33,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 14:43:33,209 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 206 [2020-09-24 14:43:33,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:43:33,226 INFO L225 Difference]: With dead ends: 4207 [2020-09-24 14:43:33,226 INFO L226 Difference]: Without dead ends: 3051 [2020-09-24 14:43:33,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-09-24 14:43:33,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2020-09-24 14:43:33,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2479. [2020-09-24 14:43:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2020-09-24 14:43:33,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 2861 transitions. [2020-09-24 14:43:33,581 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 2861 transitions. Word has length 206 [2020-09-24 14:43:33,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:43:33,582 INFO L479 AbstractCegarLoop]: Abstraction has 2479 states and 2861 transitions. [2020-09-24 14:43:33,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 14:43:33,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 2861 transitions. [2020-09-24 14:43:33,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-24 14:43:33,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:43:33,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:43:33,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:43:33,590 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:43:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:43:33,591 INFO L82 PathProgramCache]: Analyzing trace with hash -369911048, now seen corresponding path program 1 times [2020-09-24 14:43:33,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:43:33,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034640890] [2020-09-24 14:43:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:43:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:33,968 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:43:33,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:43:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:33,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:43:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:33,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:43:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:34,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:43:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:34,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:43:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:34,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:43:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:34,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 14:43:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 14:43:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:34,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 14:43:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:34,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:34,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:34,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:34,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:43:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:34,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:43:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:34,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-09-24 14:43:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:34,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-09-24 14:43:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:43:34,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034640890] [2020-09-24 14:43:34,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:43:34,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 14:43:34,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309471592] [2020-09-24 14:43:34,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 14:43:34,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:43:34,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 14:43:34,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 14:43:34,145 INFO L87 Difference]: Start difference. First operand 2479 states and 2861 transitions. Second operand 8 states. [2020-09-24 14:43:34,752 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:43:38,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:43:38,591 INFO L93 Difference]: Finished difference Result 4976 states and 6237 transitions. [2020-09-24 14:43:38,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 14:43:38,592 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 211 [2020-09-24 14:43:38,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:43:38,620 INFO L225 Difference]: With dead ends: 4976 [2020-09-24 14:43:38,620 INFO L226 Difference]: Without dead ends: 4973 [2020-09-24 14:43:38,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2020-09-24 14:43:38,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4973 states. [2020-09-24 14:43:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4973 to 4018. [2020-09-24 14:43:39,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4018 states. [2020-09-24 14:43:39,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4018 states to 4018 states and 4739 transitions. [2020-09-24 14:43:39,324 INFO L78 Accepts]: Start accepts. Automaton has 4018 states and 4739 transitions. Word has length 211 [2020-09-24 14:43:39,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:43:39,324 INFO L479 AbstractCegarLoop]: Abstraction has 4018 states and 4739 transitions. [2020-09-24 14:43:39,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 14:43:39,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4018 states and 4739 transitions. [2020-09-24 14:43:39,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-09-24 14:43:39,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:43:39,345 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:43:39,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:43:39,345 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:43:39,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:43:39,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1174473955, now seen corresponding path program 1 times [2020-09-24 14:43:39,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:43:39,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543645661] [2020-09-24 14:43:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:43:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,747 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:43:39,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:43:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:43:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:43:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:43:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:43:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:43:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 14:43:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 14:43:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 14:43:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:43:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:43:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 14:43:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 14:43:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-09-24 14:43:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:43:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:39,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:43:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:40,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:43:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:40,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-24 14:43:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:40,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-09-24 14:43:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:43:40,091 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-24 14:43:40,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543645661] [2020-09-24 14:43:40,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:43:40,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 14:43:40,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128706832] [2020-09-24 14:43:40,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 14:43:40,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:43:40,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 14:43:40,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-09-24 14:43:40,094 INFO L87 Difference]: Start difference. First operand 4018 states and 4739 transitions. Second operand 14 states. [2020-09-24 14:43:40,860 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:43:41,166 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 194