/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:05:26,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:05:26,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:05:26,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:05:26,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:05:26,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:05:26,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:05:26,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:05:26,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:05:26,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:05:26,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:05:26,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:05:26,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:05:26,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:05:26,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:05:26,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:05:26,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:05:26,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:05:26,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:05:26,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:05:26,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:05:26,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:05:26,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:05:26,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:05:26,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:05:26,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:05:26,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:05:26,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:05:26,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:05:26,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:05:26,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:05:26,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:05:26,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:05:26,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:05:26,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:05:26,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:05:26,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:05:26,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:05:26,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:05:26,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:05:26,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:05:26,976 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 [2020-09-21 10:05:27,023 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:05:27,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:05:27,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:05:27,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:05:27,026 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:05:27,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:05:27,027 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:05:27,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:05:27,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:05:27,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:05:27,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:05:27,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:05:27,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:05:27,029 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:05:27,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:05:27,030 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:05:27,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:05:27,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:05:27,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:05:27,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:05:27,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:05:27,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:05:27,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:05:27,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:05:27,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:05:27,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:05:27,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:05:27,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:05:27,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:05:27,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:05:27,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:05:27,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:05:27,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:05:27,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:05:27,527 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:05:27,528 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c [2020-09-21 10:05:27,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/172bfcdc6/cb2eb4cc93fc45ada0e1d360429f8899/FLAGc73ffd61f [2020-09-21 10:05:28,239 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:05:28,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c [2020-09-21 10:05:28,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/172bfcdc6/cb2eb4cc93fc45ada0e1d360429f8899/FLAGc73ffd61f [2020-09-21 10:05:28,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/172bfcdc6/cb2eb4cc93fc45ada0e1d360429f8899 [2020-09-21 10:05:28,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:05:28,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:05:28,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:05:28,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:05:28,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:05:28,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:05:28" (1/1) ... [2020-09-21 10:05:28,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a529ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:28, skipping insertion in model container [2020-09-21 10:05:28,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:05:28" (1/1) ... [2020-09-21 10:05:28,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:05:28,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:05:29,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:05:29,106 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:05:29,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:05:29,282 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:05:29,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29 WrapperNode [2020-09-21 10:05:29,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:05:29,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:05:29,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:05:29,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:05:29,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:05:29,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:05:29,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:05:29,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:05:29,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (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 [2020-09-21 10:05:29,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:05:29,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:05:29,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:05:29,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:05:29,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:05:29,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:05:29,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:05:29,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:05:29,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:05:29,483 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:05:29,483 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:05:29,483 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:05:29,483 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:05:29,483 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:05:29,483 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:05:29,484 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:05:29,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:05:29,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:05:29,484 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:05:29,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:05:29,485 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 10:05:29,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-21 10:05:29,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-21 10:05:29,485 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:05:29,486 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:05:29,486 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:05:29,486 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:05:29,486 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:05:29,486 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:05:29,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:05:29,487 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:05:29,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:05:29,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:05:29,487 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:05:29,487 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:05:29,487 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:05:29,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:05:29,488 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:05:29,488 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:05:29,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:05:29,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:05:29,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:05:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:05:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:05:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:05:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:05:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:05:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:05:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:05:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:05:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:05:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:05:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:05:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:05:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:05:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:05:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:05:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:05:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:05:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:05:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:05:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:05:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 10:05:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:05:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:05:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:05:29,492 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:05:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:05:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:05:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:05:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:05:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:05:29,493 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:05:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:05:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-21 10:05:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:05:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:05:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:05:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:05:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:05:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:05:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-21 10:05:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:05:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:05:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:05:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:05:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:05:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:05:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:05:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:05:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:05:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:05:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:05:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:05:30,752 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:05:30,753 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:05:30,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:05:30 BoogieIcfgContainer [2020-09-21 10:05:30,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:05:30,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:05:30,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:05:30,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:05:30,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:05:28" (1/3) ... [2020-09-21 10:05:30,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea38a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:05:30, skipping insertion in model container [2020-09-21 10:05:30,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (2/3) ... [2020-09-21 10:05:30,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea38a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:05:30, skipping insertion in model container [2020-09-21 10:05:30,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:05:30" (3/3) ... [2020-09-21 10:05:30,769 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product42.cil.c [2020-09-21 10:05:30,782 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:05:30,794 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:05:30,818 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:05:30,851 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:05:30,851 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:05:30,852 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:05:30,852 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:05:30,852 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:05:30,852 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:05:30,852 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:05:30,852 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:05:30,880 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-09-21 10:05:30,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 10:05:30,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:30,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:30,894 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:30,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:30,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1331255295, now seen corresponding path program 1 times [2020-09-21 10:05:30,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:30,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88404886] [2020-09-21 10:05:30,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,728 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:31,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:05:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:05:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:31,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88404886] [2020-09-21 10:05:31,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:31,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:05:31,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204941097] [2020-09-21 10:05:31,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:05:31,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:31,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:05:31,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:05:31,859 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-09-21 10:05:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:33,007 INFO L93 Difference]: Finished difference Result 284 states and 370 transitions. [2020-09-21 10:05:33,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:05:33,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-21 10:05:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:33,039 INFO L225 Difference]: With dead ends: 284 [2020-09-21 10:05:33,039 INFO L226 Difference]: Without dead ends: 159 [2020-09-21 10:05:33,047 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 [2020-09-21 10:05:33,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-21 10:05:33,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 126. [2020-09-21 10:05:33,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-21 10:05:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-09-21 10:05:33,221 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 51 [2020-09-21 10:05:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:33,223 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-09-21 10:05:33,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:05:33,223 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-09-21 10:05:33,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:05:33,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:33,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:33,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:05:33,230 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:33,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:33,230 INFO L82 PathProgramCache]: Analyzing trace with hash -42152189, now seen corresponding path program 1 times [2020-09-21 10:05:33,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:33,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160711238] [2020-09-21 10:05:33,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,677 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:33,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:05:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:05:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:33,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160711238] [2020-09-21 10:05:33,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:33,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:05:33,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825323610] [2020-09-21 10:05:33,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:05:33,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:33,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:05:33,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:05:33,771 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 5 states. [2020-09-21 10:05:34,306 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:35,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:35,303 INFO L93 Difference]: Finished difference Result 225 states and 277 transitions. [2020-09-21 10:05:35,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:05:35,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-09-21 10:05:35,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:35,308 INFO L225 Difference]: With dead ends: 225 [2020-09-21 10:05:35,308 INFO L226 Difference]: Without dead ends: 149 [2020-09-21 10:05:35,310 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 [2020-09-21 10:05:35,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-21 10:05:35,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-09-21 10:05:35,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-21 10:05:35,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-09-21 10:05:35,350 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 52 [2020-09-21 10:05:35,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:35,350 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-09-21 10:05:35,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:05:35,350 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-09-21 10:05:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 10:05:35,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:35,353 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] [2020-09-21 10:05:35,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:05:35,353 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:35,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:35,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1757460962, now seen corresponding path program 1 times [2020-09-21 10:05:35,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:35,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000283361] [2020-09-21 10:05:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,773 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:35,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:05:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:05:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:35,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000283361] [2020-09-21 10:05:35,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:35,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:05:35,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698351833] [2020-09-21 10:05:35,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:05:35,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:35,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:05:35,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:05:35,936 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 9 states. [2020-09-21 10:05:36,360 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:36,759 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:37,099 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:37,425 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:38,670 INFO L93 Difference]: Finished difference Result 238 states and 296 transitions. [2020-09-21 10:05:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:05:38,672 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-21 10:05:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:38,675 INFO L225 Difference]: With dead ends: 238 [2020-09-21 10:05:38,675 INFO L226 Difference]: Without dead ends: 149 [2020-09-21 10:05:38,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:05:38,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-21 10:05:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-09-21 10:05:38,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-21 10:05:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-09-21 10:05:38,712 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 57 [2020-09-21 10:05:38,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:38,713 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-09-21 10:05:38,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:05:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-09-21 10:05:38,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 10:05:38,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:38,715 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] [2020-09-21 10:05:38,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:05:38,716 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:38,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:38,716 INFO L82 PathProgramCache]: Analyzing trace with hash 2060596455, now seen corresponding path program 1 times [2020-09-21 10:05:38,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:38,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259776957] [2020-09-21 10:05:38,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:39,100 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:39,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:39,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:39,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:39,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:39,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:39,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:05:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:39,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:05:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:39,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:05:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:39,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-21 10:05:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:39,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259776957] [2020-09-21 10:05:39,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:39,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:05:39,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495365554] [2020-09-21 10:05:39,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:05:39,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:39,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:05:39,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:05:39,223 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 7 states. [2020-09-21 10:05:39,607 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:41,020 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:41,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:41,755 INFO L93 Difference]: Finished difference Result 328 states and 412 transitions. [2020-09-21 10:05:41,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 10:05:41,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-09-21 10:05:41,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:41,759 INFO L225 Difference]: With dead ends: 328 [2020-09-21 10:05:41,759 INFO L226 Difference]: Without dead ends: 239 [2020-09-21 10:05:41,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:05:41,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-09-21 10:05:41,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 190. [2020-09-21 10:05:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-21 10:05:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 219 transitions. [2020-09-21 10:05:41,836 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 219 transitions. Word has length 65 [2020-09-21 10:05:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:41,837 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 219 transitions. [2020-09-21 10:05:41,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:05:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 219 transitions. [2020-09-21 10:05:41,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 10:05:41,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:41,846 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] [2020-09-21 10:05:41,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:05:41,847 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:41,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:41,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1161742780, now seen corresponding path program 1 times [2020-09-21 10:05:41,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:41,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081801844] [2020-09-21 10:05:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,257 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:42,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:05:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:05:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:05:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 10:05:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 10:05:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:42,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081801844] [2020-09-21 10:05:42,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:42,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:05:42,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807333656] [2020-09-21 10:05:42,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:05:42,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:42,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:05:42,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:05:42,469 INFO L87 Difference]: Start difference. First operand 190 states and 219 transitions. Second operand 9 states. [2020-09-21 10:05:42,929 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:44,137 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:44,514 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:45,130 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:45,431 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:46,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:46,505 INFO L93 Difference]: Finished difference Result 566 states and 718 transitions. [2020-09-21 10:05:46,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 10:05:46,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-09-21 10:05:46,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:46,510 INFO L225 Difference]: With dead ends: 566 [2020-09-21 10:05:46,510 INFO L226 Difference]: Without dead ends: 404 [2020-09-21 10:05:46,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-09-21 10:05:46,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-09-21 10:05:46,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 328. [2020-09-21 10:05:46,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-09-21 10:05:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 378 transitions. [2020-09-21 10:05:46,612 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 378 transitions. Word has length 79 [2020-09-21 10:05:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:46,613 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 378 transitions. [2020-09-21 10:05:46,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:05:46,614 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 378 transitions. [2020-09-21 10:05:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-21 10:05:46,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:46,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:46,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:05:46,616 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:46,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:46,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1027537504, now seen corresponding path program 1 times [2020-09-21 10:05:46,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:46,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208010690] [2020-09-21 10:05:46,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,037 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:47,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:05:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:05:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:05:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:05:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-21 10:05:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-21 10:05:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:47,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208010690] [2020-09-21 10:05:47,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:47,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:05:47,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538125504] [2020-09-21 10:05:47,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:05:47,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:47,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:05:47,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:05:47,206 INFO L87 Difference]: Start difference. First operand 328 states and 378 transitions. Second operand 10 states. [2020-09-21 10:05:47,645 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:49,050 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:50,178 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:50,479 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:50,830 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:51,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:51,231 INFO L93 Difference]: Finished difference Result 742 states and 925 transitions. [2020-09-21 10:05:51,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-21 10:05:51,231 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-09-21 10:05:51,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:51,236 INFO L225 Difference]: With dead ends: 742 [2020-09-21 10:05:51,236 INFO L226 Difference]: Without dead ends: 442 [2020-09-21 10:05:51,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-09-21 10:05:51,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-09-21 10:05:51,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 327. [2020-09-21 10:05:51,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-09-21 10:05:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 375 transitions. [2020-09-21 10:05:51,307 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 375 transitions. Word has length 83 [2020-09-21 10:05:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:51,307 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 375 transitions. [2020-09-21 10:05:51,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:05:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 375 transitions. [2020-09-21 10:05:51,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 10:05:51,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:51,310 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:51,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:05:51,310 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:51,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:51,311 INFO L82 PathProgramCache]: Analyzing trace with hash 928544888, now seen corresponding path program 1 times [2020-09-21 10:05:51,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:51,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518786722] [2020-09-21 10:05:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,606 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:51,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:05:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:05:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:05:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:05:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-21 10:05:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-21 10:05:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:05:51,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518786722] [2020-09-21 10:05:51,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:51,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:05:51,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411276096] [2020-09-21 10:05:51,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:05:51,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:51,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:05:51,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:05:51,796 INFO L87 Difference]: Start difference. First operand 327 states and 375 transitions. Second operand 10 states. [2020-09-21 10:05:52,927 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:53,242 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:05:53,545 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:53,848 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:54,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:54,807 INFO L93 Difference]: Finished difference Result 749 states and 953 transitions. [2020-09-21 10:05:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 10:05:54,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-09-21 10:05:54,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:54,811 INFO L225 Difference]: With dead ends: 749 [2020-09-21 10:05:54,811 INFO L226 Difference]: Without dead ends: 450 [2020-09-21 10:05:54,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:05:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-09-21 10:05:54,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 337. [2020-09-21 10:05:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-09-21 10:05:54,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 385 transitions. [2020-09-21 10:05:54,915 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 385 transitions. Word has length 99 [2020-09-21 10:05:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:54,916 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 385 transitions. [2020-09-21 10:05:54,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:05:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 385 transitions. [2020-09-21 10:05:54,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 10:05:54,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:54,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:54,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:05:54,925 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:54,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:54,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1120842954, now seen corresponding path program 1 times [2020-09-21 10:05:54,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:54,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006987020] [2020-09-21 10:05:54,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,282 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:55,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:05:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:05:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:05:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:05:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-21 10:05:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-21 10:05:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:05:55,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006987020] [2020-09-21 10:05:55,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:55,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:05:55,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257758874] [2020-09-21 10:05:55,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:05:55,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:55,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:05:55,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:05:55,534 INFO L87 Difference]: Start difference. First operand 337 states and 385 transitions. Second operand 12 states. [2020-09-21 10:05:56,230 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:56,526 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:56,822 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:57,653 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:57,992 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:58,310 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:59,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:59,661 INFO L93 Difference]: Finished difference Result 769 states and 975 transitions. [2020-09-21 10:05:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:05:59,661 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-09-21 10:05:59,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:59,665 INFO L225 Difference]: With dead ends: 769 [2020-09-21 10:05:59,665 INFO L226 Difference]: Without dead ends: 460 [2020-09-21 10:05:59,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-09-21 10:05:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-09-21 10:05:59,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 345. [2020-09-21 10:05:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-09-21 10:05:59,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-09-21 10:05:59,743 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 99 [2020-09-21 10:05:59,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:59,744 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-09-21 10:05:59,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:05:59,744 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-09-21 10:05:59,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 10:05:59,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:59,747 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:59,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:05:59,748 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:59,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:59,748 INFO L82 PathProgramCache]: Analyzing trace with hash -151261931, now seen corresponding path program 1 times [2020-09-21 10:05:59,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:59,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686697463] [2020-09-21 10:05:59,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,135 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:00,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:06:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:06:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-21 10:06:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-21 10:06:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:06:00,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686697463] [2020-09-21 10:06:00,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:00,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:06:00,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363033910] [2020-09-21 10:06:00,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:06:00,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:00,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:06:00,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:06:00,356 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 8 states. [2020-09-21 10:06:00,747 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:01,388 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:03,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:03,946 INFO L93 Difference]: Finished difference Result 1097 states and 1430 transitions. [2020-09-21 10:06:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-21 10:06:03,947 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-09-21 10:06:03,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:03,953 INFO L225 Difference]: With dead ends: 1097 [2020-09-21 10:06:03,953 INFO L226 Difference]: Without dead ends: 780 [2020-09-21 10:06:03,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-09-21 10:06:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-09-21 10:06:04,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 635. [2020-09-21 10:06:04,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2020-09-21 10:06:04,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 745 transitions. [2020-09-21 10:06:04,152 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 745 transitions. Word has length 99 [2020-09-21 10:06:04,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:04,154 INFO L479 AbstractCegarLoop]: Abstraction has 635 states and 745 transitions. [2020-09-21 10:06:04,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:06:04,155 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 745 transitions. [2020-09-21 10:06:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-21 10:06:04,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:04,159 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:04,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:06:04,160 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:04,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:04,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1889082245, now seen corresponding path program 1 times [2020-09-21 10:06:04,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:04,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185309966] [2020-09-21 10:06:04,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,535 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:04,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:06:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:06:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:06:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-21 10:06:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-21 10:06:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:06:04,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185309966] [2020-09-21 10:06:04,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:06:04,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-21 10:06:04,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820482991] [2020-09-21 10:06:04,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-21 10:06:04,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:04,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-21 10:06:04,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:06:04,953 INFO L87 Difference]: Start difference. First operand 635 states and 745 transitions. Second operand 18 states. [2020-09-21 10:06:05,648 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:05,986 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:06,303 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:06,606 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:07,340 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:08,550 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:08,975 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:09,327 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:09,658 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:10,098 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:10,464 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:11,215 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-21 10:06:11,911 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-21 10:06:14,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:14,087 INFO L93 Difference]: Finished difference Result 1355 states and 1681 transitions. [2020-09-21 10:06:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-21 10:06:14,089 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 103 [2020-09-21 10:06:14,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:14,094 INFO L225 Difference]: With dead ends: 1355 [2020-09-21 10:06:14,094 INFO L226 Difference]: Without dead ends: 748 [2020-09-21 10:06:14,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=474, Invalid=1878, Unknown=0, NotChecked=0, Total=2352 [2020-09-21 10:06:14,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-09-21 10:06:14,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 612. [2020-09-21 10:06:14,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2020-09-21 10:06:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 706 transitions. [2020-09-21 10:06:14,212 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 706 transitions. Word has length 103 [2020-09-21 10:06:14,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:14,212 INFO L479 AbstractCegarLoop]: Abstraction has 612 states and 706 transitions. [2020-09-21 10:06:14,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-21 10:06:14,213 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 706 transitions. [2020-09-21 10:06:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-21 10:06:14,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:14,215 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:14,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:06:14,216 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:14,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:14,216 INFO L82 PathProgramCache]: Analyzing trace with hash -75649928, now seen corresponding path program 1 times [2020-09-21 10:06:14,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:14,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668839923] [2020-09-21 10:06:14,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,562 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:14,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:06:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:06:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:06:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-21 10:06:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-21 10:06:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-21 10:06:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-21 10:06:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-21 10:06:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 10:06:14,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668839923] [2020-09-21 10:06:14,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:06:14,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 10:06:14,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921338324] [2020-09-21 10:06:14,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:06:14,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:14,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:06:14,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:06:14,758 INFO L87 Difference]: Start difference. First operand 612 states and 706 transitions. Second operand 9 states. [2020-09-21 10:06:15,112 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:17,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:17,421 INFO L93 Difference]: Finished difference Result 1176 states and 1496 transitions. [2020-09-21 10:06:17,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-21 10:06:17,422 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 139 [2020-09-21 10:06:17,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:17,429 INFO L225 Difference]: With dead ends: 1176 [2020-09-21 10:06:17,430 INFO L226 Difference]: Without dead ends: 1173 [2020-09-21 10:06:17,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2020-09-21 10:06:17,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2020-09-21 10:06:17,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 957. [2020-09-21 10:06:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2020-09-21 10:06:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1109 transitions. [2020-09-21 10:06:17,651 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1109 transitions. Word has length 139 [2020-09-21 10:06:17,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:17,654 INFO L479 AbstractCegarLoop]: Abstraction has 957 states and 1109 transitions. [2020-09-21 10:06:17,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:06:17,654 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1109 transitions. [2020-09-21 10:06:17,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-21 10:06:17,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:17,662 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:17,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 10:06:17,663 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:17,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:17,664 INFO L82 PathProgramCache]: Analyzing trace with hash 518424548, now seen corresponding path program 1 times [2020-09-21 10:06:17,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:17,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734648788] [2020-09-21 10:06:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,040 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:18,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:06:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:06:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:06:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-21 10:06:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-21 10:06:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 10:06:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:06:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-21 10:06:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-21 10:06:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-09-21 10:06:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-21 10:06:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-21 10:06:18,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734648788] [2020-09-21 10:06:18,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:06:18,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 10:06:18,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069438578] [2020-09-21 10:06:18,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:06:18,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:18,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:06:18,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:06:18,337 INFO L87 Difference]: Start difference. First operand 957 states and 1109 transitions. Second operand 12 states. [2020-09-21 10:06:18,810 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:19,566 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:22,474 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:23,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:23,961 INFO L93 Difference]: Finished difference Result 2620 states and 3290 transitions. [2020-09-21 10:06:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-21 10:06:23,962 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 182 [2020-09-21 10:06:23,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:23,974 INFO L225 Difference]: With dead ends: 2620 [2020-09-21 10:06:23,974 INFO L226 Difference]: Without dead ends: 1813 [2020-09-21 10:06:23,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 76 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=375, Invalid=1107, Unknown=0, NotChecked=0, Total=1482 [2020-09-21 10:06:23,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2020-09-21 10:06:24,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1431. [2020-09-21 10:06:24,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1431 states. [2020-09-21 10:06:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1657 transitions. [2020-09-21 10:06:24,253 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1657 transitions. Word has length 182 [2020-09-21 10:06:24,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:24,254 INFO L479 AbstractCegarLoop]: Abstraction has 1431 states and 1657 transitions. [2020-09-21 10:06:24,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:06:24,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1657 transitions. [2020-09-21 10:06:24,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-21 10:06:24,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:24,260 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:24,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 10:06:24,260 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:24,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:24,261 INFO L82 PathProgramCache]: Analyzing trace with hash -867778846, now seen corresponding path program 1 times [2020-09-21 10:06:24,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:24,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639100930] [2020-09-21 10:06:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:06:24,387 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:06:24,387 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:06:24,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 10:06:24,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:06:24 BoogieIcfgContainer [2020-09-21 10:06:24,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:06:24,452 INFO L168 Benchmark]: Toolchain (without parser) took 55992.14 ms. Allocated memory was 138.9 MB in the beginning and 751.3 MB in the end (delta: 612.4 MB). Free memory was 101.5 MB in the beginning and 696.9 MB in the end (delta: -595.4 MB). Peak memory consumption was 613.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:24,461 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:06:24,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 819.93 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 171.6 MB in the end (delta: -70.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:24,465 INFO L168 Benchmark]: Boogie Preprocessor took 96.77 ms. Allocated memory is still 202.9 MB. Free memory was 171.6 MB in the beginning and 167.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:24,466 INFO L168 Benchmark]: RCFGBuilder took 1378.55 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 167.4 MB in the beginning and 196.9 MB in the end (delta: -29.4 MB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:24,471 INFO L168 Benchmark]: TraceAbstraction took 53687.07 ms. Allocated memory was 234.9 MB in the beginning and 751.3 MB in the end (delta: 516.4 MB). Free memory was 196.9 MB in the beginning and 696.9 MB in the end (delta: -500.0 MB). Peak memory consumption was 613.0 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:24,476 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 819.93 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 171.6 MB in the end (delta: -70.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.77 ms. Allocated memory is still 202.9 MB. Free memory was 171.6 MB in the beginning and 167.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1378.55 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 167.4 MB in the beginning and 196.9 MB in the end (delta: -29.4 MB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 53687.07 ms. Allocated memory was 234.9 MB in the beginning and 751.3 MB in the end (delta: 516.4 MB). Free memory was 196.9 MB in the beginning and 696.9 MB in the end (delta: -500.0 MB). Peak memory consumption was 613.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 844]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L486] int pumpRunning = 0; [L487] int systemActive = 1; [L666] int methAndRunningLastTime ; [L743] int cleanupTimeShifts = 4; [L850] int waterLevel = 1; [L851] int methaneLevelCritical = 0; [L817] int retValue_acc ; [L818] int tmp ; [L822] FCALL select_helpers() [L823] FCALL select_features() [L824] CALL, EXPR valid_product() [L734] int retValue_acc ; [L737] retValue_acc = 1 [L738] return (retValue_acc); [L824] RET, EXPR valid_product() [L824] tmp = valid_product() [L826] COND TRUE \read(tmp) [L828] FCALL setup() [L829] CALL runTest() [L810] CALL __utac_acc__Specification2_spec__1() [L671] methAndRunningLastTime = 0 [L810] RET __utac_acc__Specification2_spec__1() [L811] CALL test() [L412] int splverifierCounter ; [L413] int tmp ; [L414] int tmp___0 ; [L415] int tmp___1 ; [L416] int tmp___2 ; [L419] splverifierCounter = 0 [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp) [L433] CALL waterRise() [L868] COND TRUE waterLevel < 2 [L869] waterLevel = waterLevel + 1 [L433] RET waterRise() [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp___0)) [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___2)) [L457] tmp___1 = __VERIFIER_nondet_int() [L459] COND TRUE \read(tmp___1) [L466] CALL timeShift() [L494] COND FALSE !(\read(pumpRunning)) [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND TRUE ! pumpRunning [L528] CALL, EXPR isHighWaterLevel() [L638] int retValue_acc ; [L639] int tmp ; [L640] int tmp___0 ; [L644] CALL, EXPR isHighWaterSensorDry() [L930] int retValue_acc ; [L933] COND FALSE !(waterLevel < 2) [L937] retValue_acc = 0 [L938] return (retValue_acc); [L644] RET, EXPR isHighWaterSensorDry() [L644] tmp = isHighWaterSensorDry() [L646] COND FALSE !(\read(tmp)) [L649] tmp___0 = 1 [L651] retValue_acc = tmp___0 [L652] return (retValue_acc); [L528] RET, EXPR isHighWaterLevel() [L528] tmp = isHighWaterLevel() [L530] COND TRUE \read(tmp) [L532] CALL activatePump() [L557] int tmp ; [L561] CALL, EXPR isMethaneAlarm() [L582] int retValue_acc ; [L586] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L586] RET, EXPR isMethaneLevelCritical() [L586] retValue_acc = isMethaneLevelCritical() [L588] return (retValue_acc); [L561] RET, EXPR isMethaneAlarm() [L561] tmp = isMethaneAlarm() [L563] COND FALSE !(\read(tmp)) [L567] CALL activatePump__wrappee__highWaterSensor() [L551] pumpRunning = 1 [L567] RET activatePump__wrappee__highWaterSensor() [L532] RET activatePump() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND FALSE !(\read(tmp)) [L699] methAndRunningLastTime = 0 [L509] RET __utac_acc__Specification2_spec__2() [L466] RET timeShift() [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND FALSE !(\read(tmp)) [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp___0) [L443] CALL changeMethaneLevel() [L880] COND FALSE !(\read(methaneLevelCritical)) [L883] methaneLevelCritical = 1 [L443] RET changeMethaneLevel() [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___2)) [L457] tmp___1 = __VERIFIER_nondet_int() [L459] COND TRUE \read(tmp___1) [L466] CALL timeShift() [L494] COND TRUE \read(pumpRunning) [L496] CALL lowerWaterLevel() [L856] COND TRUE waterLevel > 0 [L857] waterLevel = waterLevel - 1 [L496] RET lowerWaterLevel() [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND FALSE !(! pumpRunning) [L541] FCALL processEnvironment__wrappee__base() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND TRUE \read(tmp) [L685] CALL, EXPR isPumpRunning() [L593] int retValue_acc ; [L596] retValue_acc = pumpRunning [L597] return (retValue_acc); [L685] RET, EXPR isPumpRunning() [L685] tmp___0 = isPumpRunning() [L687] COND TRUE \read(tmp___0) [L688] COND FALSE !(\read(methAndRunningLastTime)) [L693] methAndRunningLastTime = 1 [L509] RET __utac_acc__Specification2_spec__2() [L466] RET timeShift() [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND FALSE !(\read(tmp)) [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp___0)) [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___2)) [L457] tmp___1 = __VERIFIER_nondet_int() [L459] COND TRUE \read(tmp___1) [L466] CALL timeShift() [L494] COND TRUE \read(pumpRunning) [L496] CALL lowerWaterLevel() [L856] COND TRUE waterLevel > 0 [L857] waterLevel = waterLevel - 1 [L496] RET lowerWaterLevel() [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND FALSE !(! pumpRunning) [L541] FCALL processEnvironment__wrappee__base() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND TRUE \read(tmp) [L685] CALL, EXPR isPumpRunning() [L593] int retValue_acc ; [L596] retValue_acc = pumpRunning [L597] return (retValue_acc); [L685] RET, EXPR isPumpRunning() [L685] tmp___0 = isPumpRunning() [L687] COND TRUE \read(tmp___0) [L688] COND TRUE \read(methAndRunningLastTime) [L690] CALL __automaton_fail() [L844] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 53.5s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 44.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1500 SDtfs, 3941 SDslu, 1998 SDs, 0 SdLazy, 9312 SolverSat, 2875 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 664 GetRequests, 418 SyntacticMatches, 9 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 19.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1431occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 1444 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 1290 NumberOfCodeBlocks, 1290 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1096 ConstructedInterpolants, 0 QuantifiedInterpolants, 407768 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 119/145 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...