/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:00:16,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:00:16,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:00:16,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:00:16,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:00:16,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:00:16,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:00:16,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:00:16,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:00:16,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:00:16,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:00:16,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:00:16,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:00:16,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:00:16,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:00:16,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:00:16,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:00:16,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:00:16,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:00:16,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:00:16,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:00:16,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:00:16,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:00:16,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:00:16,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:00:16,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:00:16,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:00:16,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:00:16,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:00:16,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-02-21 19:00:16,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:00:16,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:00:16,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:00:16,563 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:00:16,584 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:00:16,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:00:16,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:00:16,589 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:00:16,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:00:16,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:00:16,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:00:16,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:00:16,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:00:16,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:00:16,592 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:00:16,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:00:16,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:00:16,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:00:16,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:00:16,593 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:00:16,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:00:16,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:00:16,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:00:16,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:00:16,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:00:16,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:00:16,594 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:00:17,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:00:17,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:00:17,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:00:17,060 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:00:17,061 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:00:17,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product55.cil.c [2021-02-21 19:00:17,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e17872017/df0907115de5432cbd368d0190eb3fb1/FLAG418dd3123 [2021-02-21 19:00:17,867 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:00:17,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product55.cil.c [2021-02-21 19:00:17,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e17872017/df0907115de5432cbd368d0190eb3fb1/FLAG418dd3123 [2021-02-21 19:00:18,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e17872017/df0907115de5432cbd368d0190eb3fb1 [2021-02-21 19:00:18,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:00:18,170 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:00:18,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:00:18,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:00:18,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:00:18,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:00:18" (1/1) ... [2021-02-21 19:00:18,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@351137a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:18, skipping insertion in model container [2021-02-21 19:00:18,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:00:18" (1/1) ... [2021-02-21 19:00:18,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:00:18,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:00:18,552 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product55.cil.c[3453,3466] [2021-02-21 19:00:18,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:00:18,762 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:00:18,815 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product55.cil.c[3453,3466] [2021-02-21 19:00:18,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:00:18,905 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:00:18,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:18 WrapperNode [2021-02-21 19:00:18,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:00:18,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:00:18,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:00:18,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:00:18,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:18" (1/1) ... [2021-02-21 19:00:18,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:18" (1/1) ... [2021-02-21 19:00:18,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:18" (1/1) ... [2021-02-21 19:00:18,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:18" (1/1) ... [2021-02-21 19:00:18,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:18" (1/1) ... [2021-02-21 19:00:18,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:18" (1/1) ... [2021-02-21 19:00:19,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:18" (1/1) ... [2021-02-21 19:00:19,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:00:19,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:00:19,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:00:19,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:00:19,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-21 19:00:19,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:00:19,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:00:19,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:00:19,224 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:00:19,224 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:00:19,224 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:00:19,225 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:00:19,225 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:00:19,225 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:00:19,225 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:00:19,226 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:00:19,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:00:19,226 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:00:19,227 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:00:19,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:00:19,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:00:19,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:00:19,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:00:19,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:00:19,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:00:19,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:00:19,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:00:19,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:00:19,232 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:00:19,232 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:00:19,232 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:00:19,232 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:00:19,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:00:19,233 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:00:19,233 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:00:19,233 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:00:19,233 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 19:00:19,233 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:00:19,233 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:00:19,234 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:00:19,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:00:19,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:00:19,234 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:00:19,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:00:19,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:00:19,235 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:00:19,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 19:00:19,235 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:00:19,235 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:00:19,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:00:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:00:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:00:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:00:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:00:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:00:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:00:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:00:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:00:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:00:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:00:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:00:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:00:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:00:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:00:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:00:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:00:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:00:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:00:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:00:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:00:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:00:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:00:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:00:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:00:19,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:00:19,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:00:19,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:00:19,240 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:00:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:00:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:00:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:00:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:00:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:00:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:00:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:00:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:00:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:00:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:00:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:00:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:00:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:00:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:00:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:00:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:00:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 19:00:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:00:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:00:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:00:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:00:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:00:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 19:00:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:00:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:00:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:00:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:00:20,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:00:20,483 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:00:20,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:00:20 BoogieIcfgContainer [2021-02-21 19:00:20,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:00:20,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:00:20,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:00:20,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:00:20,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:00:18" (1/3) ... [2021-02-21 19:00:20,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44df2c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:00:20, skipping insertion in model container [2021-02-21 19:00:20,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:18" (2/3) ... [2021-02-21 19:00:20,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44df2c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:00:20, skipping insertion in model container [2021-02-21 19:00:20,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:00:20" (3/3) ... [2021-02-21 19:00:20,496 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product55.cil.c [2021-02-21 19:00:20,503 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:00:20,509 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:00:20,530 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:00:20,556 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:00:20,556 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:00:20,556 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:00:20,556 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:00:20,557 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:00:20,557 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:00:20,557 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:00:20,557 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:00:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states. [2021-02-21 19:00:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 19:00:20,605 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:20,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:20,607 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:20,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:20,614 INFO L82 PathProgramCache]: Analyzing trace with hash 2096902, now seen corresponding path program 1 times [2021-02-21 19:00:20,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:20,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117111422] [2021-02-21 19:00:20,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:20,709 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:21,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:21,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:21,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:21,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:21,353 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:21,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:21,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:21,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:21,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:21,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:21,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:21,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:21,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:21,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:21,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:21,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:21,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:21,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:21,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:21,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:21,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:00:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:21,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:21,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:21,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:00:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:21,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:21,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:21,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 19:00:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:21,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:21,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:21,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117111422] [2021-02-21 19:00:21,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:21,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:00:21,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077608918] [2021-02-21 19:00:21,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:00:21,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:21,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:00:21,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:00:21,571 INFO L87 Difference]: Start difference. First operand 355 states. Second operand 3 states. [2021-02-21 19:00:23,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:23,448 INFO L93 Difference]: Finished difference Result 573 states and 682 transitions. [2021-02-21 19:00:23,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:00:23,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 19:00:23,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:23,467 INFO L225 Difference]: With dead ends: 573 [2021-02-21 19:00:23,468 INFO L226 Difference]: Without dead ends: 348 [2021-02-21 19:00:23,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:00:23,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-02-21 19:00:23,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 303. [2021-02-21 19:00:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2021-02-21 19:00:23,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 333 transitions. [2021-02-21 19:00:23,674 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 333 transitions. Word has length 158 [2021-02-21 19:00:23,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:23,675 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 333 transitions. [2021-02-21 19:00:23,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:00:23,676 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 333 transitions. [2021-02-21 19:00:23,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 19:00:23,681 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:23,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:23,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:00:23,681 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:23,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:23,682 INFO L82 PathProgramCache]: Analyzing trace with hash 302537829, now seen corresponding path program 1 times [2021-02-21 19:00:23,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:23,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481908396] [2021-02-21 19:00:23,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:23,689 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:23,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:23,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:23,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:23,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:23,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:23,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:24,170 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:24,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:24,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:24,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:24,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:24,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:24,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:24,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:24,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:24,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:24,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:24,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:24,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:24,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:24,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 19:00:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:24,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:24,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:24,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 19:00:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:24,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:24,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:24,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 19:00:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:24,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:24,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:24,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:24,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481908396] [2021-02-21 19:00:24,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:24,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:00:24,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201753135] [2021-02-21 19:00:24,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:00:24,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:24,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:00:24,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:00:24,317 INFO L87 Difference]: Start difference. First operand 303 states and 333 transitions. Second operand 4 states. [2021-02-21 19:00:25,053 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:00:26,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:26,506 INFO L93 Difference]: Finished difference Result 483 states and 548 transitions. [2021-02-21 19:00:26,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:00:26,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 19:00:26,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:26,513 INFO L225 Difference]: With dead ends: 483 [2021-02-21 19:00:26,514 INFO L226 Difference]: Without dead ends: 331 [2021-02-21 19:00:26,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:00:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-02-21 19:00:26,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 293. [2021-02-21 19:00:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2021-02-21 19:00:26,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 320 transitions. [2021-02-21 19:00:26,697 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 320 transitions. Word has length 159 [2021-02-21 19:00:26,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:26,697 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 320 transitions. [2021-02-21 19:00:26,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:00:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 320 transitions. [2021-02-21 19:00:26,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-21 19:00:26,700 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:26,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:26,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:00:26,701 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:26,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:26,702 INFO L82 PathProgramCache]: Analyzing trace with hash -750812611, now seen corresponding path program 1 times [2021-02-21 19:00:26,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:26,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286629214] [2021-02-21 19:00:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:26,707 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:26,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:26,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:26,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:26,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:26,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:26,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:26,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:26,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:26,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:26,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:00:26,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:26,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:00:26,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:26,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:00:26,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:26,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,221 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:27,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:00:27,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:00:27,390 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:00:27,392 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:00:27,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:00:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 19:00:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-21 19:00:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:27,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:27,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:27,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286629214] [2021-02-21 19:00:27,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:27,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:00:27,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922736751] [2021-02-21 19:00:27,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:00:27,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:27,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:00:27,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:00:27,485 INFO L87 Difference]: Start difference. First operand 293 states and 320 transitions. Second operand 9 states. [2021-02-21 19:00:28,064 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:28,510 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:00:28,893 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:00:29,280 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:29,663 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:30,061 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:31,201 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:00:34,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:34,569 INFO L93 Difference]: Finished difference Result 795 states and 919 transitions. [2021-02-21 19:00:34,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:00:34,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-21 19:00:34,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:34,577 INFO L225 Difference]: With dead ends: 795 [2021-02-21 19:00:34,577 INFO L226 Difference]: Without dead ends: 617 [2021-02-21 19:00:34,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:00:34,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-02-21 19:00:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 546. [2021-02-21 19:00:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2021-02-21 19:00:34,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 615 transitions. [2021-02-21 19:00:34,863 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 615 transitions. Word has length 168 [2021-02-21 19:00:34,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:34,864 INFO L480 AbstractCegarLoop]: Abstraction has 546 states and 615 transitions. [2021-02-21 19:00:34,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:00:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 615 transitions. [2021-02-21 19:00:34,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 19:00:34,869 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:34,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:34,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:00:34,870 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:34,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:34,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1986161027, now seen corresponding path program 1 times [2021-02-21 19:00:34,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:34,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783299199] [2021-02-21 19:00:34,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:34,874 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:34,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:34,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:34,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:34,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:34,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:34,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:34,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:34,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:34,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:34,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:34,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:34,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:34,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:34,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:34,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:34,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:35,293 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:35,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:35,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:35,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:35,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:35,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:00:35,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:35,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:35,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:35,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:35,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:35,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:35,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:35,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:35,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:35,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:35,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:35,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:35,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:00:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:35,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:35,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:35,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:00:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:35,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:35,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:35,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-21 19:00:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:35,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:35,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:35,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:35,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:35,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:35,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:35,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-21 19:00:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:35,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:35,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:35,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783299199] [2021-02-21 19:00:35,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:35,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:00:35,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120780182] [2021-02-21 19:00:35,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:00:35,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:35,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:00:35,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:00:35,569 INFO L87 Difference]: Start difference. First operand 546 states and 615 transitions. Second operand 9 states. [2021-02-21 19:00:36,344 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:38,996 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:39,446 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:39,954 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:40,451 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:40,839 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:41,250 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:41,661 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:43,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:43,021 INFO L93 Difference]: Finished difference Result 1495 states and 1804 transitions. [2021-02-21 19:00:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 19:00:43,022 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-21 19:00:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:43,032 INFO L225 Difference]: With dead ends: 1495 [2021-02-21 19:00:43,032 INFO L226 Difference]: Without dead ends: 1064 [2021-02-21 19:00:43,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 19:00:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2021-02-21 19:00:43,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 960. [2021-02-21 19:00:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2021-02-21 19:00:43,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1108 transitions. [2021-02-21 19:00:43,457 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1108 transitions. Word has length 177 [2021-02-21 19:00:43,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:43,458 INFO L480 AbstractCegarLoop]: Abstraction has 960 states and 1108 transitions. [2021-02-21 19:00:43,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:00:43,458 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1108 transitions. [2021-02-21 19:00:43,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 19:00:43,464 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:43,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:43,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:00:43,465 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:43,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:43,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1981712091, now seen corresponding path program 1 times [2021-02-21 19:00:43,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:43,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252051352] [2021-02-21 19:00:43,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:43,469 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:43,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:43,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:43,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:43,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:43,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:43,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,853 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:43,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:00:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:43,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:00:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 19:00:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 19:00:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-21 19:00:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:44,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252051352] [2021-02-21 19:00:44,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:44,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:00:44,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051524907] [2021-02-21 19:00:44,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:00:44,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:44,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:00:44,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:00:44,011 INFO L87 Difference]: Start difference. First operand 960 states and 1108 transitions. Second operand 6 states. [2021-02-21 19:00:44,622 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:47,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:47,532 INFO L93 Difference]: Finished difference Result 2115 states and 2559 transitions. [2021-02-21 19:00:47,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:00:47,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-21 19:00:47,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:47,542 INFO L225 Difference]: With dead ends: 2115 [2021-02-21 19:00:47,542 INFO L226 Difference]: Without dead ends: 1270 [2021-02-21 19:00:47,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:00:47,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-02-21 19:00:48,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1173. [2021-02-21 19:00:48,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2021-02-21 19:00:48,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1340 transitions. [2021-02-21 19:00:48,108 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1340 transitions. Word has length 182 [2021-02-21 19:00:48,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:48,109 INFO L480 AbstractCegarLoop]: Abstraction has 1173 states and 1340 transitions. [2021-02-21 19:00:48,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:00:48,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1340 transitions. [2021-02-21 19:00:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 19:00:48,114 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:48,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:48,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:00:48,114 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:48,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:48,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1850642740, now seen corresponding path program 1 times [2021-02-21 19:00:48,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:48,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334619669] [2021-02-21 19:00:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:48,119 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:00:48,236 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:00:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:00:48,323 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:00:48,578 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 19:00:48,579 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 19:00:48,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 19:00:48,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 07:00:48 BoogieIcfgContainer [2021-02-21 19:00:48,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 19:00:48,630 INFO L168 Benchmark]: Toolchain (without parser) took 30466.58 ms. Allocated memory was 165.7 MB in the beginning and 664.8 MB in the end (delta: 499.1 MB). Free memory was 140.3 MB in the beginning and 504.1 MB in the end (delta: -363.7 MB). Peak memory consumption was 136.7 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:48,631 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 165.7 MB. Free memory is still 138.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 19:00:48,631 INFO L168 Benchmark]: CACSL2BoogieTranslator took 729.68 ms. Allocated memory is still 165.7 MB. Free memory was 139.3 MB in the beginning and 117.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:48,631 INFO L168 Benchmark]: Boogie Preprocessor took 115.50 ms. Allocated memory is still 165.7 MB. Free memory was 117.3 MB in the beginning and 113.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:48,635 INFO L168 Benchmark]: RCFGBuilder took 1463.11 ms. Allocated memory was 165.7 MB in the beginning and 210.8 MB in the end (delta: 45.1 MB). Free memory was 113.3 MB in the beginning and 158.8 MB in the end (delta: -45.5 MB). Peak memory consumption was 47.4 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:48,636 INFO L168 Benchmark]: TraceAbstraction took 28134.58 ms. Allocated memory was 210.8 MB in the beginning and 664.8 MB in the end (delta: 454.0 MB). Free memory was 158.2 MB in the beginning and 504.1 MB in the end (delta: -345.8 MB). Peak memory consumption was 108.2 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:48,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 165.7 MB. Free memory is still 138.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 729.68 ms. Allocated memory is still 165.7 MB. Free memory was 139.3 MB in the beginning and 117.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 115.50 ms. Allocated memory is still 165.7 MB. Free memory was 117.3 MB in the beginning and 113.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1463.11 ms. Allocated memory was 165.7 MB in the beginning and 210.8 MB in the end (delta: 45.1 MB). Free memory was 113.3 MB in the beginning and 158.8 MB in the end (delta: -45.5 MB). Peak memory consumption was 47.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 28134.58 ms. Allocated memory was 210.8 MB in the beginning and 664.8 MB in the end (delta: 454.0 MB). Free memory was 158.2 MB in the beginning and 504.1 MB in the end (delta: -345.8 MB). Peak memory consumption was 108.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 195]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L88] int waterLevel = 1; [L89] int methaneLevelCritical = 0; [L369] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L566] int cleanupTimeShifts = 4; [L669] int pumpRunning = 0; [L670] int systemActive = 1; [L642] int retValue_acc ; [L643] int tmp ; [L647] FCALL select_helpers() [L648] FCALL select_features() [L649] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L649] RET, EXPR valid_product() [L649] tmp = valid_product() [L651] COND TRUE \read(tmp) [L653] FCALL setup() [L654] CALL runTest() [L636] CALL test() [L943] int splverifierCounter ; [L944] int tmp ; [L945] int tmp___0 ; [L946] int tmp___1 ; [L947] int tmp___2 ; [L950] splverifierCounter = 0 [L952] COND TRUE 1 [L954] COND TRUE splverifierCounter < 4 [L960] tmp = __VERIFIER_nondet_int() [L962] COND TRUE \read(tmp) [L964] CALL waterRise() [L106] COND TRUE waterLevel < 2 [L107] waterLevel = waterLevel + 1 [L964] RET waterRise() [L970] tmp___0 = __VERIFIER_nondet_int() [L972] COND FALSE !(\read(tmp___0)) [L980] tmp___2 = __VERIFIER_nondet_int() [L982] COND FALSE !(\read(tmp___2)) [L986] tmp___1 = __VERIFIER_nondet_int() [L988] COND TRUE \read(tmp___1) [L990] CALL stopSystem() [L896] COND FALSE !(\read(pumpRunning)) [L903] systemActive = 0 [L990] RET stopSystem() [L997] CALL timeShift() [L677] COND FALSE !(\read(pumpRunning)) [L684] COND FALSE !(\read(systemActive)) [L692] CALL __utac_acc__Specification3_spec__1() [L909] int tmp ; [L910] int tmp___0 ; [L911] int tmp___1 ; [L915] CALL, EXPR isMethaneLevelCritical() [L127] int retValue_acc ; [L130] retValue_acc = methaneLevelCritical [L131] return (retValue_acc); [L915] RET, EXPR isMethaneLevelCritical() [L915] tmp = isMethaneLevelCritical() [L917] COND FALSE !(\read(tmp)) [L921] CALL, EXPR getWaterLevel() [L159] int retValue_acc ; [L162] retValue_acc = waterLevel [L163] return (retValue_acc); [L921] RET, EXPR getWaterLevel() [L921] tmp___0 = getWaterLevel() [L923] COND TRUE tmp___0 == 2 [L925] CALL, EXPR isPumpRunning() [L810] int retValue_acc ; [L813] retValue_acc = pumpRunning [L814] return (retValue_acc); [L925] RET, EXPR isPumpRunning() [L925] tmp___1 = isPumpRunning() [L927] COND FALSE !(\read(tmp___1)) [L931] CALL __automaton_fail() [L195] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 670 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 22.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1432 SDtfs, 2296 SDslu, 1539 SDs, 0 SdLazy, 4278 SolverSat, 768 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1173occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 355 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...