/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:29:35,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:29:35,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:29:35,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:29:35,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:29:35,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:29:35,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:29:35,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:29:35,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:29:35,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:29:35,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:29:35,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:29:35,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:29:35,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:29:35,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:29:35,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:29:35,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:29:35,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:29:35,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:29:35,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:29:35,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:29:35,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:29:35,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:29:35,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:29:35,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:29:35,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:29:35,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:29:35,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:29:35,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:29:35,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:29:35,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:29:35,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:29:35,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:29:35,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:29:35,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:29:35,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:29:35,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:29:35,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:29:35,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:29:35,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:29:35,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:29:35,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:29:35,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:29:35,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:29:35,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:29:35,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:29:35,356 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:29:35,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:29:35,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:29:35,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:29:35,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:29:35,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:29:35,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:29:35,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:29:35,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:29:35,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:29:35,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:29:35,358 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:29:35,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:29:35,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:29:35,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:29:35,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:29:35,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:29:35,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:29:35,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:29:35,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:29:35,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:29:35,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:29:35,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:29:35,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:29:35,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:29:35,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:29:35,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:29:35,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:29:35,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:29:35,672 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:29:35,673 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:29:35,673 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c [2020-08-21 15:29:35,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21e69735d/97fd899c3c824011b0edfe2a1d4dcf15/FLAG32dcb88ee [2020-08-21 15:29:36,311 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:29:36,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c [2020-08-21 15:29:36,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21e69735d/97fd899c3c824011b0edfe2a1d4dcf15/FLAG32dcb88ee [2020-08-21 15:29:36,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21e69735d/97fd899c3c824011b0edfe2a1d4dcf15 [2020-08-21 15:29:36,597 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:29:36,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:29:36,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:29:36,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:29:36,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:29:36,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:29:36" (1/1) ... [2020-08-21 15:29:36,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29df31b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:36, skipping insertion in model container [2020-08-21 15:29:36,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:29:36" (1/1) ... [2020-08-21 15:29:36,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:29:36,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:29:37,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:29:37,071 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:29:37,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:29:37,184 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:29:37,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:37 WrapperNode [2020-08-21 15:29:37,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:29:37,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:29:37,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:29:37,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:29:37,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:37" (1/1) ... [2020-08-21 15:29:37,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:37" (1/1) ... [2020-08-21 15:29:37,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:37" (1/1) ... [2020-08-21 15:29:37,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:37" (1/1) ... [2020-08-21 15:29:37,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:37" (1/1) ... [2020-08-21 15:29:37,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:37" (1/1) ... [2020-08-21 15:29:37,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:37" (1/1) ... [2020-08-21 15:29:37,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:29:37,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:29:37,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:29:37,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:29:37,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:29:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:29:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:29:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:29:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:29:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:29:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:29:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:29:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:29:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:29:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:29:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:29:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:29:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:29:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:29:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:29:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:29:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:29:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:29:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:29:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:29:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 15:29:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:29:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:29:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:29:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:29:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:29:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:29:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:29:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:29:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:29:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:29:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:29:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:29:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:29:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:29:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:29:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:29:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 15:29:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:29:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:29:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:29:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:29:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:29:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:29:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:29:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:29:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:29:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:29:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:29:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:29:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:29:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:29:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:29:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:29:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:29:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:29:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:29:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:29:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:29:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:29:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:29:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:29:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:29:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:29:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:29:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:29:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:29:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:29:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:29:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:29:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:29:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:29:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 15:29:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:29:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:29:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:29:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 15:29:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:29:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:29:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:29:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:29:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:29:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:29:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:29:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:29:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:29:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:29:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:29:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:29:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:29:38,413 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:29:38,413 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:29:38,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:29:38 BoogieIcfgContainer [2020-08-21 15:29:38,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:29:38,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:29:38,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:29:38,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:29:38,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:29:36" (1/3) ... [2020-08-21 15:29:38,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5859374e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:29:38, skipping insertion in model container [2020-08-21 15:29:38,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:37" (2/3) ... [2020-08-21 15:29:38,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5859374e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:29:38, skipping insertion in model container [2020-08-21 15:29:38,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:29:38" (3/3) ... [2020-08-21 15:29:38,427 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product41.cil.c [2020-08-21 15:29:38,438 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:29:38,446 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:29:38,461 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:29:38,487 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:29:38,488 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:29:38,488 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:29:38,488 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:29:38,488 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:29:38,489 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:29:38,489 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:29:38,489 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:29:38,512 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-21 15:29:38,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 15:29:38,522 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:38,523 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] [2020-08-21 15:29:38,524 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:38,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:38,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1904787813, now seen corresponding path program 1 times [2020-08-21 15:29:38,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:38,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743076676] [2020-08-21 15:29:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,271 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:39,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:29:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:29:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:39,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743076676] [2020-08-21 15:29:39,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:39,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:29:39,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89371502] [2020-08-21 15:29:39,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:29:39,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:39,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:29:39,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:29:39,380 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-08-21 15:29:40,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:40,439 INFO L93 Difference]: Finished difference Result 275 states and 361 transitions. [2020-08-21 15:29:40,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:29:40,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 15:29:40,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:40,457 INFO L225 Difference]: With dead ends: 275 [2020-08-21 15:29:40,457 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 15:29:40,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:29:40,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 15:29:40,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-08-21 15:29:40,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-21 15:29:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2020-08-21 15:29:40,567 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 46 [2020-08-21 15:29:40,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:40,568 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2020-08-21 15:29:40,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:29:40,568 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2020-08-21 15:29:40,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 15:29:40,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:40,572 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] [2020-08-21 15:29:40,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:29:40,573 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:40,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:40,573 INFO L82 PathProgramCache]: Analyzing trace with hash -8679295, now seen corresponding path program 1 times [2020-08-21 15:29:40,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:40,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222528453] [2020-08-21 15:29:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,942 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:40,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:29:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:29:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:40,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222528453] [2020-08-21 15:29:40,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:40,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:29:40,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699903134] [2020-08-21 15:29:40,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:29:40,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:40,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:29:40,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:29:40,998 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand 4 states. [2020-08-21 15:29:41,423 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:42,136 INFO L93 Difference]: Finished difference Result 208 states and 252 transitions. [2020-08-21 15:29:42,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:29:42,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 15:29:42,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:42,141 INFO L225 Difference]: With dead ends: 208 [2020-08-21 15:29:42,141 INFO L226 Difference]: Without dead ends: 133 [2020-08-21 15:29:42,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:29:42,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-21 15:29:42,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2020-08-21 15:29:42,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-21 15:29:42,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2020-08-21 15:29:42,176 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 47 [2020-08-21 15:29:42,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:42,176 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2020-08-21 15:29:42,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:29:42,177 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2020-08-21 15:29:42,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 15:29:42,179 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:42,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:29:42,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:29:42,179 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:42,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:42,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1364944070, now seen corresponding path program 1 times [2020-08-21 15:29:42,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:42,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218633965] [2020-08-21 15:29:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,502 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:42,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:29:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:29:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:42,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218633965] [2020-08-21 15:29:42,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:42,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:29:42,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440093900] [2020-08-21 15:29:42,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:29:42,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:42,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:29:42,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:29:42,621 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand 8 states. [2020-08-21 15:29:42,934 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:43,222 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:43,490 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:43,705 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:44,692 INFO L93 Difference]: Finished difference Result 217 states and 266 transitions. [2020-08-21 15:29:44,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 15:29:44,692 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 15:29:44,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:44,695 INFO L225 Difference]: With dead ends: 217 [2020-08-21 15:29:44,695 INFO L226 Difference]: Without dead ends: 133 [2020-08-21 15:29:44,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:29:44,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-21 15:29:44,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2020-08-21 15:29:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-21 15:29:44,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2020-08-21 15:29:44,727 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 51 [2020-08-21 15:29:44,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:44,728 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2020-08-21 15:29:44,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:29:44,728 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2020-08-21 15:29:44,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 15:29:44,730 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:44,730 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] [2020-08-21 15:29:44,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:29:44,731 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:44,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:44,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1317252167, now seen corresponding path program 1 times [2020-08-21 15:29:44,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:44,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990216902] [2020-08-21 15:29:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:44,983 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:44,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:45,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:45,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:45,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:45,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:45,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 15:29:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:45,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:45,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:29:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:45,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 15:29:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:45,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990216902] [2020-08-21 15:29:45,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:45,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:29:45,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532163939] [2020-08-21 15:29:45,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:29:45,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:45,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:29:45,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:29:45,060 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand 6 states. [2020-08-21 15:29:45,393 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:46,414 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:46,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:46,925 INFO L93 Difference]: Finished difference Result 300 states and 370 transitions. [2020-08-21 15:29:46,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:29:46,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-21 15:29:46,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:46,930 INFO L225 Difference]: With dead ends: 300 [2020-08-21 15:29:46,930 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 15:29:46,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:29:46,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 15:29:46,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 175. [2020-08-21 15:29:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-08-21 15:29:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2020-08-21 15:29:46,973 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 59 [2020-08-21 15:29:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:46,973 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2020-08-21 15:29:46,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:29:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2020-08-21 15:29:46,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-21 15:29:46,976 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:46,976 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] [2020-08-21 15:29:46,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:29:46,977 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:46,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:46,977 INFO L82 PathProgramCache]: Analyzing trace with hash 19293366, now seen corresponding path program 1 times [2020-08-21 15:29:46,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:46,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832502886] [2020-08-21 15:29:46,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:47,258 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:47,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:47,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:47,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:47,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:47,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:47,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 15:29:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:47,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:47,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:47,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:29:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:47,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 15:29:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:47,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 15:29:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:47,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832502886] [2020-08-21 15:29:47,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:47,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:29:47,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166578650] [2020-08-21 15:29:47,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:29:47,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:47,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:29:47,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:29:47,377 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand 8 states. [2020-08-21 15:29:47,746 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:48,599 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:48,890 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:49,360 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:49,578 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:49,829 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:50,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:50,541 INFO L93 Difference]: Finished difference Result 520 states and 648 transitions. [2020-08-21 15:29:50,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:29:50,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-08-21 15:29:50,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:50,546 INFO L225 Difference]: With dead ends: 520 [2020-08-21 15:29:50,547 INFO L226 Difference]: Without dead ends: 369 [2020-08-21 15:29:50,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:29:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-08-21 15:29:50,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 305. [2020-08-21 15:29:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-21 15:29:50,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 352 transitions. [2020-08-21 15:29:50,616 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 352 transitions. Word has length 73 [2020-08-21 15:29:50,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:50,617 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 352 transitions. [2020-08-21 15:29:50,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:29:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 352 transitions. [2020-08-21 15:29:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 15:29:50,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:50,620 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] [2020-08-21 15:29:50,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:29:50,620 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:50,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:50,620 INFO L82 PathProgramCache]: Analyzing trace with hash -989642822, now seen corresponding path program 1 times [2020-08-21 15:29:50,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:50,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073384867] [2020-08-21 15:29:50,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,896 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:50,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:29:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:29:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:29:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 15:29:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:50,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 15:29:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:51,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073384867] [2020-08-21 15:29:51,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:51,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:29:51,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026891566] [2020-08-21 15:29:51,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:29:51,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:51,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:29:51,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:29:51,024 INFO L87 Difference]: Start difference. First operand 305 states and 352 transitions. Second operand 9 states. [2020-08-21 15:29:51,377 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:52,403 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:52,655 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:53,339 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:53,598 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:53,826 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:53,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:53,966 INFO L93 Difference]: Finished difference Result 408 states and 516 transitions. [2020-08-21 15:29:53,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 15:29:53,969 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-21 15:29:53,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:53,973 INFO L225 Difference]: With dead ends: 408 [2020-08-21 15:29:53,973 INFO L226 Difference]: Without dead ends: 405 [2020-08-21 15:29:53,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:29:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-08-21 15:29:54,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 305. [2020-08-21 15:29:54,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-21 15:29:54,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 351 transitions. [2020-08-21 15:29:54,056 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 351 transitions. Word has length 77 [2020-08-21 15:29:54,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:54,058 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 351 transitions. [2020-08-21 15:29:54,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:29:54,058 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 351 transitions. [2020-08-21 15:29:54,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 15:29:54,067 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:54,067 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] [2020-08-21 15:29:54,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:29:54,068 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:54,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:54,068 INFO L82 PathProgramCache]: Analyzing trace with hash 636453553, now seen corresponding path program 1 times [2020-08-21 15:29:54,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:54,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66981433] [2020-08-21 15:29:54,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,310 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:29:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:29:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:29:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 15:29:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 15:29:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:29:54,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66981433] [2020-08-21 15:29:54,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:54,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:29:54,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747053252] [2020-08-21 15:29:54,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:29:54,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:54,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:29:54,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:29:54,427 INFO L87 Difference]: Start difference. First operand 305 states and 351 transitions. Second operand 9 states. [2020-08-21 15:29:55,273 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:55,517 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:29:55,763 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:55,999 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:56,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:56,832 INFO L93 Difference]: Finished difference Result 694 states and 873 transitions. [2020-08-21 15:29:56,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:29:56,833 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 15:29:56,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:56,837 INFO L225 Difference]: With dead ends: 694 [2020-08-21 15:29:56,837 INFO L226 Difference]: Without dead ends: 413 [2020-08-21 15:29:56,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:29:56,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-21 15:29:56,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 315. [2020-08-21 15:29:56,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-08-21 15:29:56,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 361 transitions. [2020-08-21 15:29:56,921 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 361 transitions. Word has length 93 [2020-08-21 15:29:56,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:56,921 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 361 transitions. [2020-08-21 15:29:56,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:29:56,922 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 361 transitions. [2020-08-21 15:29:56,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 15:29:56,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:56,924 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] [2020-08-21 15:29:56,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:29:56,924 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:56,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:56,924 INFO L82 PathProgramCache]: Analyzing trace with hash -260939725, now seen corresponding path program 1 times [2020-08-21 15:29:56,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:56,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008697745] [2020-08-21 15:29:56,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,206 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:29:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:29:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:29:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 15:29:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 15:29:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:29:57,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008697745] [2020-08-21 15:29:57,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:57,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 15:29:57,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230243286] [2020-08-21 15:29:57,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:29:57,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:57,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:29:57,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:29:57,381 INFO L87 Difference]: Start difference. First operand 315 states and 361 transitions. Second operand 11 states. [2020-08-21 15:29:58,123 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:58,348 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:58,569 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:59,155 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:59,399 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:59,643 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:30:00,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:30:00,626 INFO L93 Difference]: Finished difference Result 714 states and 895 transitions. [2020-08-21 15:30:00,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:30:00,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-21 15:30:00,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:30:00,630 INFO L225 Difference]: With dead ends: 714 [2020-08-21 15:30:00,630 INFO L226 Difference]: Without dead ends: 423 [2020-08-21 15:30:00,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:30:00,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-08-21 15:30:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 323. [2020-08-21 15:30:00,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-21 15:30:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 369 transitions. [2020-08-21 15:30:00,690 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 369 transitions. Word has length 93 [2020-08-21 15:30:00,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:30:00,690 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 369 transitions. [2020-08-21 15:30:00,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:30:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 369 transitions. [2020-08-21 15:30:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 15:30:00,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:00,692 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] [2020-08-21 15:30:00,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:30:00,693 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:00,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1709999732, now seen corresponding path program 1 times [2020-08-21 15:30:00,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:00,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078496238] [2020-08-21 15:30:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:00,967 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:30:00,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:30:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:00,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:30:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:00,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:30:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:00,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:30:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:30:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:30:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:30:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 15:30:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 15:30:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:30:01,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078496238] [2020-08-21 15:30:01,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:30:01,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:30:01,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959123122] [2020-08-21 15:30:01,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:30:01,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:30:01,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:30:01,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:30:01,088 INFO L87 Difference]: Start difference. First operand 323 states and 369 transitions. Second operand 7 states. [2020-08-21 15:30:01,383 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:01,920 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:03,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:30:03,726 INFO L93 Difference]: Finished difference Result 997 states and 1285 transitions. [2020-08-21 15:30:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 15:30:03,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-21 15:30:03,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:30:03,733 INFO L225 Difference]: With dead ends: 997 [2020-08-21 15:30:03,733 INFO L226 Difference]: Without dead ends: 698 [2020-08-21 15:30:03,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:30:03,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-08-21 15:30:03,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 599. [2020-08-21 15:30:03,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-08-21 15:30:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 711 transitions. [2020-08-21 15:30:03,860 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 711 transitions. Word has length 93 [2020-08-21 15:30:03,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:30:03,861 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 711 transitions. [2020-08-21 15:30:03,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:30:03,861 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 711 transitions. [2020-08-21 15:30:03,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 15:30:03,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:03,869 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] [2020-08-21 15:30:03,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:30:03,870 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:03,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:03,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1136093798, now seen corresponding path program 1 times [2020-08-21 15:30:03,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:03,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981808030] [2020-08-21 15:30:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,186 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:30:04,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:30:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:30:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:30:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:30:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:30:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:30:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:30:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:30:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:30:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:30:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:30:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 15:30:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 15:30:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:30:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 15:30:04,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981808030] [2020-08-21 15:30:04,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:30:04,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 15:30:04,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143268425] [2020-08-21 15:30:04,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 15:30:04,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:30:04,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 15:30:04,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-21 15:30:04,536 INFO L87 Difference]: Start difference. First operand 599 states and 711 transitions. Second operand 17 states. [2020-08-21 15:30:05,191 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:05,492 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:05,772 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:06,033 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:06,629 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:30:07,505 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:07,792 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:08,059 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:08,335 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:08,696 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:08,983 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:30:09,543 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 15:30:10,138 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 15:30:11,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:30:11,562 INFO L93 Difference]: Finished difference Result 1238 states and 1532 transitions. [2020-08-21 15:30:11,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 15:30:11,563 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-21 15:30:11,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:30:11,568 INFO L225 Difference]: With dead ends: 1238 [2020-08-21 15:30:11,568 INFO L226 Difference]: Without dead ends: 663 [2020-08-21 15:30:11,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=279, Invalid=1127, Unknown=0, NotChecked=0, Total=1406 [2020-08-21 15:30:11,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-08-21 15:30:11,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 567. [2020-08-21 15:30:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-08-21 15:30:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 660 transitions. [2020-08-21 15:30:11,685 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 660 transitions. Word has length 97 [2020-08-21 15:30:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:30:11,686 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 660 transitions. [2020-08-21 15:30:11,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 15:30:11,687 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 660 transitions. [2020-08-21 15:30:11,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 15:30:11,689 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:30:11,689 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-21 15:30:11,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:30:11,690 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:30:11,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:30:11,690 INFO L82 PathProgramCache]: Analyzing trace with hash 773081915, now seen corresponding path program 1 times [2020-08-21 15:30:11,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:30:11,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525583275] [2020-08-21 15:30:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:30:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:30:11,774 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:30:11,774 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:30:11,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:30:11,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:30:11 BoogieIcfgContainer [2020-08-21 15:30:11,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:30:11,839 INFO L168 Benchmark]: Toolchain (without parser) took 35239.09 ms. Allocated memory was 141.0 MB in the beginning and 640.2 MB in the end (delta: 499.1 MB). Free memory was 103.1 MB in the beginning and 225.0 MB in the end (delta: -121.9 MB). Peak memory consumption was 377.2 MB. Max. memory is 7.1 GB. [2020-08-21 15:30:11,845 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. [2020-08-21 15:30:11,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.36 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 172.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-08-21 15:30:11,848 INFO L168 Benchmark]: Boogie Preprocessor took 86.14 ms. Allocated memory is still 204.5 MB. Free memory was 172.1 MB in the beginning and 167.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:30:11,849 INFO L168 Benchmark]: RCFGBuilder took 1147.10 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 167.0 MB in the beginning and 193.8 MB in the end (delta: -26.8 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:30:11,854 INFO L168 Benchmark]: TraceAbstraction took 33415.82 ms. Allocated memory was 234.9 MB in the beginning and 640.2 MB in the end (delta: 405.3 MB). Free memory was 192.2 MB in the beginning and 225.0 MB in the end (delta: -32.8 MB). Peak memory consumption was 372.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:30:11,857 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 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 585.36 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 172.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.14 ms. Allocated memory is still 204.5 MB. Free memory was 172.1 MB in the beginning and 167.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1147.10 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 167.0 MB in the beginning and 193.8 MB in the end (delta: -26.8 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33415.82 ms. Allocated memory was 234.9 MB in the beginning and 640.2 MB in the end (delta: 405.3 MB). Free memory was 192.2 MB in the beginning and 225.0 MB in the end (delta: -32.8 MB). Peak memory consumption was 372.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 887]: 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; [L480] int waterLevel = 1; [L481] int methaneLevelCritical = 0; [L578] int pumpRunning = 0; [L579] int systemActive = 1; [L749] int cleanupTimeShifts = 4; [L825] int retValue_acc ; [L826] int tmp ; [L830] FCALL select_helpers() [L831] FCALL select_features() [L832] CALL, EXPR valid_product() [L874] int retValue_acc ; [L877] retValue_acc = 1 [L878] return (retValue_acc); [L832] RET, EXPR valid_product() [L832] tmp = valid_product() [L834] COND TRUE \read(tmp) [L836] FCALL setup() [L837] CALL runTest() [L816] CALL test() [L411] int splverifierCounter ; [L412] int tmp ; [L413] int tmp___0 ; [L414] int tmp___1 ; [L415] int tmp___2 ; [L418] splverifierCounter = 0 [L420] COND TRUE 1 [L422] COND TRUE splverifierCounter < 4 [L428] tmp = __VERIFIER_nondet_int() [L430] COND TRUE \read(tmp) [L432] CALL waterRise() [L498] COND TRUE waterLevel < 2 [L499] waterLevel = waterLevel + 1 [L432] RET waterRise() [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp___0)) [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___2) [L463] CALL timeShift() [L586] COND FALSE !(\read(pumpRunning)) [L593] COND TRUE \read(systemActive) [L595] CALL processEnvironment() [L615] int tmp ; [L618] COND TRUE ! pumpRunning [L620] CALL, EXPR isHighWaterLevel() [L730] int retValue_acc ; [L731] int tmp ; [L732] int tmp___0 ; [L736] CALL, EXPR isHighWaterSensorDry() [L560] int retValue_acc ; [L563] COND FALSE !(waterLevel < 2) [L567] retValue_acc = 0 [L568] return (retValue_acc); [L736] RET, EXPR isHighWaterSensorDry() [L736] tmp = isHighWaterSensorDry() [L738] COND FALSE !(\read(tmp)) [L741] tmp___0 = 1 [L743] retValue_acc = tmp___0 [L744] return (retValue_acc); [L620] RET, EXPR isHighWaterLevel() [L620] tmp = isHighWaterLevel() [L622] COND TRUE \read(tmp) [L624] CALL activatePump() [L649] int tmp ; [L653] CALL, EXPR isMethaneAlarm() [L674] int retValue_acc ; [L678] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L678] RET, EXPR isMethaneLevelCritical() [L678] retValue_acc = isMethaneLevelCritical() [L680] return (retValue_acc); [L653] RET, EXPR isMethaneAlarm() [L653] tmp = isMethaneAlarm() [L655] COND FALSE !(\read(tmp)) [L659] CALL activatePump__wrappee__highWaterSensor() [L643] pumpRunning = 1 [L659] RET activatePump__wrappee__highWaterSensor() [L624] RET activatePump() [L595] RET processEnvironment() [L601] CALL __utac_acc__Specification1_spec__1() [L893] int tmp ; [L894] int tmp___0 ; [L898] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L898] RET, EXPR isMethaneLevelCritical() [L898] tmp = isMethaneLevelCritical() [L900] COND FALSE !(\read(tmp)) [L601] RET __utac_acc__Specification1_spec__1() [L463] RET timeShift() [L420] COND TRUE 1 [L422] COND TRUE splverifierCounter < 4 [L428] tmp = __VERIFIER_nondet_int() [L430] COND FALSE !(\read(tmp)) [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND TRUE \read(tmp___0) [L442] CALL changeMethaneLevel() [L510] COND FALSE !(\read(methaneLevelCritical)) [L513] methaneLevelCritical = 1 [L442] RET changeMethaneLevel() [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___2) [L463] CALL timeShift() [L586] COND TRUE \read(pumpRunning) [L588] CALL lowerWaterLevel() [L486] COND TRUE waterLevel > 0 [L487] waterLevel = waterLevel - 1 [L588] RET lowerWaterLevel() [L593] COND TRUE \read(systemActive) [L595] CALL processEnvironment() [L615] int tmp ; [L618] COND FALSE !(! pumpRunning) [L633] FCALL processEnvironment__wrappee__base() [L595] RET processEnvironment() [L601] CALL __utac_acc__Specification1_spec__1() [L893] int tmp ; [L894] int tmp___0 ; [L898] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L898] RET, EXPR isMethaneLevelCritical() [L898] tmp = isMethaneLevelCritical() [L900] COND TRUE \read(tmp) [L902] CALL, EXPR isPumpRunning() [L685] int retValue_acc ; [L688] retValue_acc = pumpRunning [L689] return (retValue_acc); [L902] RET, EXPR isPumpRunning() [L902] tmp___0 = isPumpRunning() [L904] COND TRUE \read(tmp___0) [L906] CALL __automaton_fail() [L887] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 222 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 27.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1134 SDtfs, 2290 SDslu, 1330 SDs, 0 SdLazy, 6355 SolverSat, 1427 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 391 GetRequests, 259 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=599occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 680 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 861 NumberOfCodeBlocks, 861 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 719 ConstructedInterpolants, 0 QuantifiedInterpolants, 229226 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 10/12 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...