/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:17:55,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:17:55,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:17:55,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:17:55,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:17:55,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:17:55,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:17:55,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:17:55,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:17:55,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:17:55,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:17:55,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:17:55,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:17:55,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:17:55,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:17:55,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:17:55,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:17:55,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:17:55,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:17:55,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:17:55,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:17:55,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:17:55,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:17:55,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:17:55,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:17:55,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:17:55,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:17:55,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:17:55,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:17:55,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:17:55,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:17:55,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:17:55,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:17:55,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:17:55,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:17:55,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:17:55,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:17:55,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:17:55,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:17:55,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:17:55,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:17:55,148 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 [2020-08-18 23:17:55,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:17:55,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:17:55,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:17:55,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:17:55,193 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:17:55,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:17:55,194 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:17:55,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:17:55,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:17:55,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:17:55,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:17:55,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:17:55,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:17:55,197 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:17:55,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:17:55,197 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:17:55,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:17:55,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:17:55,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:17:55,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:17:55,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:17:55,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:17:55,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:17:55,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:17:55,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:17:55,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:17:55,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:17:55,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:17:55,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:17:55,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:17:55,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:17:55,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:17:55,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:17:55,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:17:55,558 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:17:55,559 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-08-18 23:17:55,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/739c2e9f8/dffbfd6efc424a7ca25ae03ef86c84b4/FLAGf1732a896 [2020-08-18 23:17:56,195 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:17:56,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-08-18 23:17:56,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/739c2e9f8/dffbfd6efc424a7ca25ae03ef86c84b4/FLAGf1732a896 [2020-08-18 23:17:56,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/739c2e9f8/dffbfd6efc424a7ca25ae03ef86c84b4 [2020-08-18 23:17:56,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:17:56,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:17:56,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:17:56,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:17:56,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:17:56,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:17:56" (1/1) ... [2020-08-18 23:17:56,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d30be7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:56, skipping insertion in model container [2020-08-18 23:17:56,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:17:56" (1/1) ... [2020-08-18 23:17:56,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:17:56,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:17:57,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:17:57,055 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:17:57,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:17:57,235 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:17:57,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:57 WrapperNode [2020-08-18 23:17:57,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:17:57,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:17:57,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:17:57,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:17:57,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:57" (1/1) ... [2020-08-18 23:17:57,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:57" (1/1) ... [2020-08-18 23:17:57,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:57" (1/1) ... [2020-08-18 23:17:57,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:57" (1/1) ... [2020-08-18 23:17:57,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:57" (1/1) ... [2020-08-18 23:17:57,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:57" (1/1) ... [2020-08-18 23:17:57,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:57" (1/1) ... [2020-08-18 23:17:57,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:17:57,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:17:57,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:17:57,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:17:57,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:57" (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 [2020-08-18 23:17:57,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:17:57,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:17:57,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 23:17:57,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 23:17:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 23:17:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 23:17:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 23:17:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 23:17:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:17:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 23:17:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 23:17:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 23:17:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 23:17:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 23:17:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 23:17:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 23:17:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 23:17:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 23:17:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 23:17:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 23:17:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 23:17:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 23:17:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 23:17:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 23:17:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 23:17:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 23:17:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 23:17:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 23:17:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 23:17:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 23:17:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 23:17:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 23:17:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 23:17:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 23:17:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 23:17:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 23:17:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 23:17:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 23:17:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 23:17:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 23:17:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:17:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:17:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 23:17:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 23:17:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 23:17:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 23:17:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 23:17:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 23:17:57,406 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 23:17:57,406 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 23:17:57,406 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 23:17:57,406 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 23:17:57,406 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 23:17:57,406 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 23:17:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 23:17:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 23:17:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 23:17:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 23:17:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 23:17:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:17:57,408 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 23:17:57,408 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:17:57,408 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:17:57,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 23:17:57,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:17:57,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:17:57,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:17:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:17:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 23:17:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:17:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 23:17:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 23:17:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:17:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 23:17:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 23:17:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:17:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 23:17:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 23:17:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 23:17:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 23:17:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 23:17:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 23:17:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 23:17:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 23:17:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 23:17:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 23:17:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 23:17:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 23:17:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 23:17:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 23:17:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 23:17:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:17:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 23:17:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:17:58,612 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:17:58,612 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 23:17:58,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:17:58 BoogieIcfgContainer [2020-08-18 23:17:58,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:17:58,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:17:58,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:17:58,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:17:58,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:17:56" (1/3) ... [2020-08-18 23:17:58,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e362b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:17:58, skipping insertion in model container [2020-08-18 23:17:58,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:57" (2/3) ... [2020-08-18 23:17:58,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e362b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:17:58, skipping insertion in model container [2020-08-18 23:17:58,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:17:58" (3/3) ... [2020-08-18 23:17:58,631 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2020-08-18 23:17:58,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:17:58,651 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:17:58,664 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:17:58,685 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:17:58,685 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:17:58,685 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:17:58,685 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:17:58,685 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:17:58,685 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:17:58,686 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:17:58,686 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:17:58,706 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-18 23:17:58,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 23:17:58,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:58,717 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] [2020-08-18 23:17:58,718 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:58,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:58,724 INFO L82 PathProgramCache]: Analyzing trace with hash 922466731, now seen corresponding path program 1 times [2020-08-18 23:17:58,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:58,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683003017] [2020-08-18 23:17:58,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:59,396 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:59,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:59,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:59,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:59,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:59,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:17:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:59,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:17:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:17:59,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683003017] [2020-08-18 23:17:59,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:59,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:17:59,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330593818] [2020-08-18 23:17:59,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:17:59,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:59,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:17:59,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:17:59,534 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-08-18 23:18:00,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:00,679 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2020-08-18 23:18:00,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:18:00,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 23:18:00,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:00,697 INFO L225 Difference]: With dead ends: 297 [2020-08-18 23:18:00,697 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 23:18:00,702 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 [2020-08-18 23:18:00,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 23:18:00,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-18 23:18:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 23:18:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-18 23:18:00,792 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2020-08-18 23:18:00,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:00,793 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-18 23:18:00,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:18:00,793 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-18 23:18:00,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 23:18:00,797 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:00,797 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] [2020-08-18 23:18:00,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:18:00,798 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:00,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:00,799 INFO L82 PathProgramCache]: Analyzing trace with hash 288176866, now seen corresponding path program 1 times [2020-08-18 23:18:00,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:00,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711031488] [2020-08-18 23:18:00,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:01,137 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:01,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:01,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:01,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:01,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:01,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:01,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:18:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:01,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:18:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:01,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711031488] [2020-08-18 23:18:01,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:01,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:18:01,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068445466] [2020-08-18 23:18:01,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:18:01,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:01,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:18:01,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:18:01,184 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2020-08-18 23:18:01,625 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:02,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:02,494 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2020-08-18 23:18:02,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:18:02,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 23:18:02,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:02,498 INFO L225 Difference]: With dead ends: 230 [2020-08-18 23:18:02,499 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 23:18:02,500 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 [2020-08-18 23:18:02,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 23:18:02,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-18 23:18:02,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 23:18:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-18 23:18:02,540 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2020-08-18 23:18:02,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:02,541 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-18 23:18:02,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:18:02,541 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-18 23:18:02,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 23:18:02,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:02,543 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] [2020-08-18 23:18:02,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:18:02,544 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:02,544 INFO L82 PathProgramCache]: Analyzing trace with hash -2059632594, now seen corresponding path program 1 times [2020-08-18 23:18:02,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:02,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245835219] [2020-08-18 23:18:02,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:02,879 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:02,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:02,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:02,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:02,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:03,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:03,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:18:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:03,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:18:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:03,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245835219] [2020-08-18 23:18:03,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:03,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:18:03,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139100366] [2020-08-18 23:18:03,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:18:03,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:03,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:18:03,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:18:03,035 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 8 states. [2020-08-18 23:18:03,404 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:03,710 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:03,997 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:04,243 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:05,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:05,381 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2020-08-18 23:18:05,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 23:18:05,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 23:18:05,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:05,386 INFO L225 Difference]: With dead ends: 239 [2020-08-18 23:18:05,386 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 23:18:05,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:18:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 23:18:05,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-18 23:18:05,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 23:18:05,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-18 23:18:05,420 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2020-08-18 23:18:05,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:05,421 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-18 23:18:05,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:18:05,421 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-18 23:18:05,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 23:18:05,423 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:05,423 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] [2020-08-18 23:18:05,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:18:05,423 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:05,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:05,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1182566725, now seen corresponding path program 1 times [2020-08-18 23:18:05,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:05,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412885169] [2020-08-18 23:18:05,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:05,718 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:05,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:05,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:05,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:05,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:05,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:05,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:18:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:05,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:05,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:05,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 23:18:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:05,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:18:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:05,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:05,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412885169] [2020-08-18 23:18:05,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:05,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:18:05,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442961427] [2020-08-18 23:18:05,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:18:05,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:05,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:18:05,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:18:05,820 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2020-08-18 23:18:06,146 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:07,279 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:07,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:07,912 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2020-08-18 23:18:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:18:07,915 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-18 23:18:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:07,918 INFO L225 Difference]: With dead ends: 331 [2020-08-18 23:18:07,919 INFO L226 Difference]: Without dead ends: 236 [2020-08-18 23:18:07,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:18:07,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-08-18 23:18:07,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-08-18 23:18:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-18 23:18:07,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2020-08-18 23:18:07,966 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2020-08-18 23:18:07,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:07,966 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2020-08-18 23:18:07,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:18:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2020-08-18 23:18:07,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 23:18:07,968 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:07,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:18:07,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:18:07,969 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:07,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:07,969 INFO L82 PathProgramCache]: Analyzing trace with hash 590157777, now seen corresponding path program 1 times [2020-08-18 23:18:07,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:07,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183244094] [2020-08-18 23:18:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:08,243 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:08,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:08,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:08,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:08,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:08,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:08,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:18:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:08,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:08,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:08,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:18:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:08,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:18:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:08,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 23:18:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:08,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 23:18:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:08,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183244094] [2020-08-18 23:18:08,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:08,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:18:08,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019329746] [2020-08-18 23:18:08,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:18:08,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:08,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:18:08,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:18:08,399 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 8 states. [2020-08-18 23:18:08,779 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:09,932 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:10,196 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:10,444 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:10,656 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:10,928 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:11,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:11,965 INFO L93 Difference]: Finished difference Result 580 states and 716 transitions. [2020-08-18 23:18:11,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:18:11,967 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-18 23:18:11,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:11,972 INFO L225 Difference]: With dead ends: 580 [2020-08-18 23:18:11,972 INFO L226 Difference]: Without dead ends: 409 [2020-08-18 23:18:11,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:18:11,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-08-18 23:18:12,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 345. [2020-08-18 23:18:12,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-18 23:18:12,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 394 transitions. [2020-08-18 23:18:12,069 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 394 transitions. Word has length 78 [2020-08-18 23:18:12,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:12,070 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 394 transitions. [2020-08-18 23:18:12,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:18:12,070 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 394 transitions. [2020-08-18 23:18:12,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 23:18:12,072 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:12,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:18:12,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:18:12,073 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:12,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:12,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1032148237, now seen corresponding path program 1 times [2020-08-18 23:18:12,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:12,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727683666] [2020-08-18 23:18:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:12,336 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:12,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:12,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:12,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:12,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:12,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:12,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:18:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:12,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:18:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:12,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:18:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:12,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:18:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:12,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 23:18:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:12,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 23:18:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:12,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727683666] [2020-08-18 23:18:12,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:12,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:18:12,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785304379] [2020-08-18 23:18:12,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:18:12,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:12,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:18:12,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:18:12,458 INFO L87 Difference]: Start difference. First operand 345 states and 394 transitions. Second operand 9 states. [2020-08-18 23:18:12,948 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:13,991 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:14,225 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:14,494 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:14,747 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:14,980 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:15,920 INFO L93 Difference]: Finished difference Result 448 states and 562 transitions. [2020-08-18 23:18:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 23:18:15,920 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-18 23:18:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:15,925 INFO L225 Difference]: With dead ends: 448 [2020-08-18 23:18:15,926 INFO L226 Difference]: Without dead ends: 445 [2020-08-18 23:18:15,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 23:18:15,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-08-18 23:18:15,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 345. [2020-08-18 23:18:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-18 23:18:15,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-08-18 23:18:15,998 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 82 [2020-08-18 23:18:15,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:15,998 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-08-18 23:18:15,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:18:15,999 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-08-18 23:18:16,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 23:18:16,001 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:16,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:18:16,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:18:16,001 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:16,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:16,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2065507240, now seen corresponding path program 1 times [2020-08-18 23:18:16,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:16,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83543485] [2020-08-18 23:18:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:16,242 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:16,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:16,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:16,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:16,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:16,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:16,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:18:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:16,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:18:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:16,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:16,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:16,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:18:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:16,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:18:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:16,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 23:18:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:16,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 23:18:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:16,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83543485] [2020-08-18 23:18:16,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:16,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:18:16,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26954183] [2020-08-18 23:18:16,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:18:16,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:16,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:18:16,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:18:16,416 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 9 states. [2020-08-18 23:18:17,245 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:17,483 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:18:17,720 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:17,944 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:18,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:18,926 INFO L93 Difference]: Finished difference Result 770 states and 946 transitions. [2020-08-18 23:18:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:18:18,931 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 23:18:18,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:18,935 INFO L225 Difference]: With dead ends: 770 [2020-08-18 23:18:18,935 INFO L226 Difference]: Without dead ends: 449 [2020-08-18 23:18:18,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:18:18,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-08-18 23:18:19,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 355. [2020-08-18 23:18:19,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-08-18 23:18:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 403 transitions. [2020-08-18 23:18:19,005 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 403 transitions. Word has length 83 [2020-08-18 23:18:19,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:19,006 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 403 transitions. [2020-08-18 23:18:19,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:18:19,006 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 403 transitions. [2020-08-18 23:18:19,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 23:18:19,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:19,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:18:19,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:18:19,008 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:19,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:19,008 INFO L82 PathProgramCache]: Analyzing trace with hash 2088139494, now seen corresponding path program 1 times [2020-08-18 23:18:19,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:19,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523894597] [2020-08-18 23:18:19,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:19,272 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:19,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:19,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:19,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:19,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:19,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:18:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:19,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:18:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:19,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:19,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:18:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:19,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:18:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:19,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 23:18:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 23:18:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:19,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523894597] [2020-08-18 23:18:19,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:19,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 23:18:19,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722685843] [2020-08-18 23:18:19,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 23:18:19,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:19,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 23:18:19,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:18:19,396 INFO L87 Difference]: Start difference. First operand 355 states and 403 transitions. Second operand 11 states. [2020-08-18 23:18:19,886 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:20,118 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:20,335 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:20,909 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:21,150 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:21,397 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:22,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:22,561 INFO L93 Difference]: Finished difference Result 794 states and 986 transitions. [2020-08-18 23:18:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:18:22,574 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-18 23:18:22,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:22,580 INFO L225 Difference]: With dead ends: 794 [2020-08-18 23:18:22,580 INFO L226 Difference]: Without dead ends: 463 [2020-08-18 23:18:22,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:18:22,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-08-18 23:18:22,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 363. [2020-08-18 23:18:22,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-18 23:18:22,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 411 transitions. [2020-08-18 23:18:22,641 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 411 transitions. Word has length 83 [2020-08-18 23:18:22,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:22,642 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 411 transitions. [2020-08-18 23:18:22,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 23:18:22,642 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 411 transitions. [2020-08-18 23:18:22,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 23:18:22,644 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:22,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:18:22,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:18:22,644 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:22,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:22,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1181335803, now seen corresponding path program 1 times [2020-08-18 23:18:22,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:22,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159221905] [2020-08-18 23:18:22,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:22,959 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:22,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:22,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:22,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:22,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:22,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:23,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:18:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:23,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:18:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:23,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:23,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:23,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:18:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:23,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:18:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:23,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 23:18:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:23,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 23:18:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:23,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159221905] [2020-08-18 23:18:23,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:23,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 23:18:23,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390622122] [2020-08-18 23:18:23,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 23:18:23,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:23,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 23:18:23,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 23:18:23,135 INFO L87 Difference]: Start difference. First operand 363 states and 411 transitions. Second operand 7 states. [2020-08-18 23:18:23,663 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:24,307 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:26,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:26,236 INFO L93 Difference]: Finished difference Result 1097 states and 1408 transitions. [2020-08-18 23:18:26,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 23:18:26,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-18 23:18:26,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:26,242 INFO L225 Difference]: With dead ends: 1097 [2020-08-18 23:18:26,242 INFO L226 Difference]: Without dead ends: 758 [2020-08-18 23:18:26,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:18:26,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-08-18 23:18:26,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 659. [2020-08-18 23:18:26,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-08-18 23:18:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 781 transitions. [2020-08-18 23:18:26,348 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 781 transitions. Word has length 83 [2020-08-18 23:18:26,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:26,348 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 781 transitions. [2020-08-18 23:18:26,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 23:18:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 781 transitions. [2020-08-18 23:18:26,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 23:18:26,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:26,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:18:26,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:18:26,351 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:26,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:26,351 INFO L82 PathProgramCache]: Analyzing trace with hash -765720469, now seen corresponding path program 1 times [2020-08-18 23:18:26,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:26,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954817433] [2020-08-18 23:18:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 23:18:26,406 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 23:18:26,406 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:18:26,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:18:26,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:18:26 BoogieIcfgContainer [2020-08-18 23:18:26,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:18:26,438 INFO L168 Benchmark]: Toolchain (without parser) took 29934.71 ms. Allocated memory was 140.0 MB in the beginning and 613.4 MB in the end (delta: 473.4 MB). Free memory was 101.7 MB in the beginning and 186.1 MB in the end (delta: -84.3 MB). Peak memory consumption was 389.1 MB. Max. memory is 7.1 GB. [2020-08-18 23:18:26,439 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 23:18:26,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.90 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.5 MB in the beginning and 168.9 MB in the end (delta: -67.3 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-08-18 23:18:26,440 INFO L168 Benchmark]: Boogie Preprocessor took 86.27 ms. Allocated memory is still 201.9 MB. Free memory was 168.9 MB in the beginning and 164.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 23:18:26,441 INFO L168 Benchmark]: RCFGBuilder took 1297.18 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 164.8 MB in the beginning and 193.8 MB in the end (delta: -28.9 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-08-18 23:18:26,442 INFO L168 Benchmark]: TraceAbstraction took 27812.59 ms. Allocated memory was 235.9 MB in the beginning and 613.4 MB in the end (delta: 377.5 MB). Free memory was 193.8 MB in the beginning and 186.1 MB in the end (delta: 7.7 MB). Peak memory consumption was 385.2 MB. Max. memory is 7.1 GB. [2020-08-18 23:18:26,445 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.90 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.5 MB in the beginning and 168.9 MB in the end (delta: -67.3 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.27 ms. Allocated memory is still 201.9 MB. Free memory was 168.9 MB in the beginning and 164.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1297.18 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 164.8 MB in the beginning and 193.8 MB in the end (delta: -28.9 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27812.59 ms. Allocated memory was 235.9 MB in the beginning and 613.4 MB in the end (delta: 377.5 MB). Free memory was 193.8 MB in the beginning and 186.1 MB in the end (delta: 7.7 MB). Peak memory consumption was 385.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 950]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int pumpRunning = 0; [L546] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L150] int retValue_acc ; [L151] int tmp ; [L155] FCALL select_helpers() [L156] FCALL select_features() [L157] CALL, EXPR valid_product() [L833] int retValue_acc ; [L836] retValue_acc = 1 [L837] return (retValue_acc); [L157] RET, EXPR valid_product() [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) [L161] FCALL setup() [L162] CALL runTest() [L141] CALL test() [L743] int splverifierCounter ; [L744] int tmp ; [L745] int tmp___0 ; [L746] int tmp___1 ; [L747] int tmp___2 ; [L750] splverifierCounter = 0 [L752] COND TRUE 1 [L754] COND TRUE splverifierCounter < 4 [L760] tmp = __VERIFIER_nondet_int() [L762] COND TRUE \read(tmp) [L764] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L764] RET waterRise() [L770] tmp___0 = __VERIFIER_nondet_int() [L772] COND TRUE \read(tmp___0) [L774] CALL changeMethaneLevel() [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 [L774] RET changeMethaneLevel() [L780] tmp___2 = __VERIFIER_nondet_int() [L782] COND TRUE \read(tmp___2) [L795] CALL timeShift() [L552] COND FALSE !(\read(pumpRunning)) [L559] COND TRUE \read(systemActive) [L561] CALL processEnvironment() [L607] int tmp ; [L610] COND FALSE !(\read(pumpRunning)) [L625] CALL processEnvironment__wrappee__highWaterSensor() [L581] int tmp ; [L584] COND TRUE ! pumpRunning [L586] CALL, EXPR isHighWaterLevel() [L704] int retValue_acc ; [L705] int tmp ; [L706] int tmp___0 ; [L710] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L710] RET, EXPR isHighWaterSensorDry() [L710] tmp = isHighWaterSensorDry() [L712] COND FALSE !(\read(tmp)) [L715] tmp___0 = 1 [L717] retValue_acc = tmp___0 [L718] return (retValue_acc); [L586] RET, EXPR isHighWaterLevel() [L586] tmp = isHighWaterLevel() [L588] COND TRUE \read(tmp) [L590] CALL activatePump() [L635] pumpRunning = 1 [L590] RET activatePump() [L625] RET processEnvironment__wrappee__highWaterSensor() [L561] RET processEnvironment() [L567] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L659] int retValue_acc ; [L662] retValue_acc = pumpRunning [L663] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L950] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1045 SDtfs, 1701 SDslu, 955 SDs, 0 SdLazy, 4843 SolverSat, 1009 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=659occurred 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: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 580 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 186785 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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...