/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:10:55,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:10:55,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:10:55,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:10:55,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:10:55,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:10:55,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:10:55,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:10:55,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:10:55,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:10:55,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:10:55,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:10:55,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:10:55,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:10:55,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:10:55,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:10:55,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:10:55,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:10:55,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:10:55,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:10:55,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:10:55,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:10:55,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:10:55,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:10:55,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:10:55,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:10:55,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:10:55,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:10:55,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:10:55,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:10:55,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:10:55,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:10:55,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:10:55,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:10:55,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:10:55,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:10:55,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:10:55,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:10:55,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:10:55,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:10:55,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:10:55,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:10:55,634 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:10:55,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:10:55,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:10:55,637 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:10:55,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:10:55,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:10:55,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:10:55,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:10:55,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:10:55,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:10:55,638 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:10:55,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:10:55,639 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:10:55,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:10:55,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:10:55,640 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:10:55,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:10:55,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:10:55,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:10:55,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:10:55,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:10:55,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:10:55,642 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:10:55,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:10:56,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:10:56,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:10:56,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:10:56,095 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:10:56,101 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:10:56,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2021-02-24 03:10:56,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e98ee2977/2fd7341141c1408e9bf214a31f134a04/FLAG59bff3c0a [2021-02-24 03:10:56,932 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:10:56,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2021-02-24 03:10:56,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e98ee2977/2fd7341141c1408e9bf214a31f134a04/FLAG59bff3c0a [2021-02-24 03:10:57,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e98ee2977/2fd7341141c1408e9bf214a31f134a04 [2021-02-24 03:10:57,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:10:57,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:10:57,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:10:57,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:10:57,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:10:57,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:10:57" (1/1) ... [2021-02-24 03:10:57,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c4d8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:57, skipping insertion in model container [2021-02-24 03:10:57,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:10:57" (1/1) ... [2021-02-24 03:10:57,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:10:57,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:10:57,665 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_spec1_product55.cil.c[7599,7612] [2021-02-24 03:10:57,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:10:57,785 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:10:57,887 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_spec1_product55.cil.c[7599,7612] [2021-02-24 03:10:57,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:10:57,976 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:10:57,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:57 WrapperNode [2021-02-24 03:10:57,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:10:57,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:10:57,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:10:57,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:10:57,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:57" (1/1) ... [2021-02-24 03:10:57,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:57" (1/1) ... [2021-02-24 03:10:58,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:57" (1/1) ... [2021-02-24 03:10:58,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:57" (1/1) ... [2021-02-24 03:10:58,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:57" (1/1) ... [2021-02-24 03:10:58,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:57" (1/1) ... [2021-02-24 03:10:58,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:57" (1/1) ... [2021-02-24 03:10:58,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:10:58,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:10:58,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:10:58,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:10:58,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:57" (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 [2021-02-24 03:10:58,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:10:58,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:10:58,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:10:58,306 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:10:58,306 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:10:58,307 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:10:58,307 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:10:58,307 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:10:58,307 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:10:58,307 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:10:58,308 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:10:58,308 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:10:58,308 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-24 03:10:58,308 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:10:58,308 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:10:58,308 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:10:58,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:10:58,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:10:58,309 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:10:58,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-24 03:10:58,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-24 03:10:58,310 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-24 03:10:58,310 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:10:58,310 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:10:58,310 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:10:58,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:10:58,310 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:10:58,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:10:58,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-24 03:10:58,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-24 03:10:58,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:10:58,311 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:10:58,311 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:10:58,312 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:10:58,312 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:10:58,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:10:58,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-24 03:10:58,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:10:58,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:10:58,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:10:58,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:10:58,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:10:58,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:10:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:10:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:10:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:10:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:10:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:10:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:10:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:10:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:10:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:10:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:10:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:10:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:10:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-24 03:10:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:10:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:10:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:10:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:10:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:10:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:10:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-24 03:10:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-24 03:10:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:10:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:10:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:10:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:10:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-24 03:10:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:10:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:10:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-24 03:10:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:10:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-24 03:10:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-24 03:10:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:10:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:10:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:10:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:10:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:10:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:10:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:10:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:10:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:10:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:10:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:10:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:10:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:10:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:10:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:10:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:10:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:10:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:10:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:10:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:10:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:10:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:10:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:10:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:10:58,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:10:59,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:10:59,658 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:10:59,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:10:59 BoogieIcfgContainer [2021-02-24 03:10:59,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:10:59,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:10:59,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:10:59,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:10:59,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:10:57" (1/3) ... [2021-02-24 03:10:59,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3110d168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:10:59, skipping insertion in model container [2021-02-24 03:10:59,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:57" (2/3) ... [2021-02-24 03:10:59,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3110d168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:10:59, skipping insertion in model container [2021-02-24 03:10:59,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:10:59" (3/3) ... [2021-02-24 03:10:59,679 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2021-02-24 03:10:59,688 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:10:59,695 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:10:59,716 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:10:59,743 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:10:59,744 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:10:59,744 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:10:59,744 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:10:59,744 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:10:59,744 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:10:59,744 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:10:59,745 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:10:59,772 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states. [2021-02-24 03:10:59,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-24 03:10:59,793 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:59,794 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] [2021-02-24 03:10:59,795 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:59,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:59,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2098560608, now seen corresponding path program 1 times [2021-02-24 03:10:59,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:59,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855238570] [2021-02-24 03:10:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:59,887 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:00,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:00,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:00,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:00,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:00,697 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:00,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:00,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:00,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:00,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:00,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:00,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:00,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:00,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:00,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:00,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:00,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:00,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:00,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:00,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:00,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:00,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:00,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-24 03:11:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:00,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:00,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:00,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855238570] [2021-02-24 03:11:00,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:00,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:11:00,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666250189] [2021-02-24 03:11:00,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:11:00,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:00,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:11:00,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:11:00,887 INFO L87 Difference]: Start difference. First operand 344 states. Second operand 3 states. [2021-02-24 03:11:02,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:02,686 INFO L93 Difference]: Finished difference Result 551 states and 658 transitions. [2021-02-24 03:11:02,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:11:02,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-24 03:11:02,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:02,718 INFO L225 Difference]: With dead ends: 551 [2021-02-24 03:11:02,718 INFO L226 Difference]: Without dead ends: 337 [2021-02-24 03:11:02,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:11:02,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-02-24 03:11:02,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 292. [2021-02-24 03:11:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2021-02-24 03:11:02,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 321 transitions. [2021-02-24 03:11:02,940 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 321 transitions. Word has length 147 [2021-02-24 03:11:02,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:02,943 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 321 transitions. [2021-02-24 03:11:02,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:11:02,944 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 321 transitions. [2021-02-24 03:11:02,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-24 03:11:02,957 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:02,958 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] [2021-02-24 03:11:02,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:11:02,959 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:02,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:02,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1759336169, now seen corresponding path program 1 times [2021-02-24 03:11:02,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:02,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752691737] [2021-02-24 03:11:02,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:02,971 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:03,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:03,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:03,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:03,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:03,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:03,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:03,422 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:03,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:03,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:03,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:03,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:03,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:03,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:03,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:03,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:03,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:03,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:03,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:03,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:03,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:03,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:03,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:11:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:03,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:03,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:03,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:11:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:03,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:03,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:03,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:03,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752691737] [2021-02-24 03:11:03,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:03,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:11:03,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545454767] [2021-02-24 03:11:03,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:11:03,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:03,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:11:03,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:11:03,529 INFO L87 Difference]: Start difference. First operand 292 states and 321 transitions. Second operand 4 states. [2021-02-24 03:11:04,361 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:05,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:05,879 INFO L93 Difference]: Finished difference Result 461 states and 524 transitions. [2021-02-24 03:11:05,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:11:05,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-24 03:11:05,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:05,887 INFO L225 Difference]: With dead ends: 461 [2021-02-24 03:11:05,887 INFO L226 Difference]: Without dead ends: 320 [2021-02-24 03:11:05,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:11:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-02-24 03:11:05,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 282. [2021-02-24 03:11:05,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2021-02-24 03:11:05,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 308 transitions. [2021-02-24 03:11:06,000 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 308 transitions. Word has length 148 [2021-02-24 03:11:06,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:06,000 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 308 transitions. [2021-02-24 03:11:06,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:11:06,001 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 308 transitions. [2021-02-24 03:11:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-24 03:11:06,003 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:06,004 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] [2021-02-24 03:11:06,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:11:06,004 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:06,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:06,005 INFO L82 PathProgramCache]: Analyzing trace with hash 654950291, now seen corresponding path program 1 times [2021-02-24 03:11:06,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:06,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857304435] [2021-02-24 03:11:06,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:06,009 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:06,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:06,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:06,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:06,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:06,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:06,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:06,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,516 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:06,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:11:06,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:06,710 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-24 03:11:06,711 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-24 03:11:06,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-24 03:11:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-24 03:11:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:06,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857304435] [2021-02-24 03:11:06,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:06,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:11:06,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006466796] [2021-02-24 03:11:06,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:11:06,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:06,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:11:06,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:11:06,849 INFO L87 Difference]: Start difference. First operand 282 states and 308 transitions. Second operand 9 states. [2021-02-24 03:11:07,668 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:08,146 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:08,512 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:11:08,940 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:09,361 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:11:09,750 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:10,855 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:14,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:14,114 INFO L93 Difference]: Finished difference Result 751 states and 871 transitions. [2021-02-24 03:11:14,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:11:14,115 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-24 03:11:14,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:14,122 INFO L225 Difference]: With dead ends: 751 [2021-02-24 03:11:14,122 INFO L226 Difference]: Without dead ends: 584 [2021-02-24 03:11:14,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-24 03:11:14,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-02-24 03:11:14,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 513. [2021-02-24 03:11:14,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2021-02-24 03:11:14,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 579 transitions. [2021-02-24 03:11:14,381 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 579 transitions. Word has length 157 [2021-02-24 03:11:14,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:14,382 INFO L480 AbstractCegarLoop]: Abstraction has 513 states and 579 transitions. [2021-02-24 03:11:14,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:11:14,382 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 579 transitions. [2021-02-24 03:11:14,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-24 03:11:14,385 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:14,385 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] [2021-02-24 03:11:14,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:11:14,386 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:14,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:14,386 INFO L82 PathProgramCache]: Analyzing trace with hash -54603577, now seen corresponding path program 1 times [2021-02-24 03:11:14,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:14,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727407521] [2021-02-24 03:11:14,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:14,390 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:14,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:14,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:14,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:14,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:14,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:14,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:14,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:14,871 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:14,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:14,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:14,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:14,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:14,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:14,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:14,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:14,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:14,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:14,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:14,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-24 03:11:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:14,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:14,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-24 03:11:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:14,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:14,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:14,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:14,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:15,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-24 03:11:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:15,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:15,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:15,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727407521] [2021-02-24 03:11:15,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:15,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:11:15,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652695907] [2021-02-24 03:11:15,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:11:15,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:15,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:11:15,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:11:15,061 INFO L87 Difference]: Start difference. First operand 513 states and 579 transitions. Second operand 9 states. [2021-02-24 03:11:15,680 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:17,032 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:17,442 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:11:18,026 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:18,437 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:19,214 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:19,731 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:11:20,199 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:20,953 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:22,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:22,568 INFO L93 Difference]: Finished difference Result 1432 states and 1721 transitions. [2021-02-24 03:11:22,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 03:11:22,569 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2021-02-24 03:11:22,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:22,576 INFO L225 Difference]: With dead ends: 1432 [2021-02-24 03:11:22,577 INFO L226 Difference]: Without dead ends: 1034 [2021-02-24 03:11:22,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-24 03:11:22,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-02-24 03:11:22,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 872. [2021-02-24 03:11:22,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2021-02-24 03:11:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 999 transitions. [2021-02-24 03:11:23,002 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 999 transitions. Word has length 166 [2021-02-24 03:11:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:23,003 INFO L480 AbstractCegarLoop]: Abstraction has 872 states and 999 transitions. [2021-02-24 03:11:23,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:11:23,003 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 999 transitions. [2021-02-24 03:11:23,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-24 03:11:23,008 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:23,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:11:23,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:11:23,008 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:23,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:23,009 INFO L82 PathProgramCache]: Analyzing trace with hash 625697653, now seen corresponding path program 1 times [2021-02-24 03:11:23,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:23,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690238378] [2021-02-24 03:11:23,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:23,013 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:23,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:23,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:23,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:23,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:23,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:23,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:23,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:23,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:23,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:23,421 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:23,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:23,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:23,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:23,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:23,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:23,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:23,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:23,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:23,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:23,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:23,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:23,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:23,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:23,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-24 03:11:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:23,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:23,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-24 03:11:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:23,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:23,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-24 03:11:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:23,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:23,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:23,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:23,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690238378] [2021-02-24 03:11:23,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:23,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:11:23,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472220819] [2021-02-24 03:11:23,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:11:23,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:23,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:11:23,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:11:23,601 INFO L87 Difference]: Start difference. First operand 872 states and 999 transitions. Second operand 10 states. [2021-02-24 03:11:24,283 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:25,783 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:26,213 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:11:26,607 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:27,001 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:11:27,374 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:28,418 WARN L202 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:28,809 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:29,279 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:31,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:31,074 INFO L93 Difference]: Finished difference Result 2225 states and 2750 transitions. [2021-02-24 03:11:31,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 03:11:31,075 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2021-02-24 03:11:31,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:31,085 INFO L225 Difference]: With dead ends: 2225 [2021-02-24 03:11:31,085 INFO L226 Difference]: Without dead ends: 1468 [2021-02-24 03:11:31,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-24 03:11:31,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-02-24 03:11:31,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1206. [2021-02-24 03:11:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1206 states. [2021-02-24 03:11:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1398 transitions. [2021-02-24 03:11:31,697 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1398 transitions. Word has length 171 [2021-02-24 03:11:31,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:31,698 INFO L480 AbstractCegarLoop]: Abstraction has 1206 states and 1398 transitions. [2021-02-24 03:11:31,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:11:31,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1398 transitions. [2021-02-24 03:11:31,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-24 03:11:31,703 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:31,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:11:31,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:11:31,704 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:31,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:31,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1968694556, now seen corresponding path program 1 times [2021-02-24 03:11:31,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:31,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010333869] [2021-02-24 03:11:31,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:31,708 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:31,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:31,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:31,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:31,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,064 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:32,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:11:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:32,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:32,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:32,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:32,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:32,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:11:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:11:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-02-24 03:11:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-02-24 03:11:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:32,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010333869] [2021-02-24 03:11:32,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:32,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:11:32,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079462028] [2021-02-24 03:11:32,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:11:32,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:32,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:11:32,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:11:32,297 INFO L87 Difference]: Start difference. First operand 1206 states and 1398 transitions. Second operand 10 states. [2021-02-24 03:11:33,975 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:34,359 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:11:34,777 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-24 03:11:35,188 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:35,623 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:35,982 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:38,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:38,010 INFO L93 Difference]: Finished difference Result 2701 states and 3311 transitions. [2021-02-24 03:11:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:11:38,016 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2021-02-24 03:11:38,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:38,027 INFO L225 Difference]: With dead ends: 2701 [2021-02-24 03:11:38,027 INFO L226 Difference]: Without dead ends: 1610 [2021-02-24 03:11:38,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-24 03:11:38,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2021-02-24 03:11:38,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1244. [2021-02-24 03:11:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1244 states. [2021-02-24 03:11:38,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1438 transitions. [2021-02-24 03:11:38,505 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1438 transitions. Word has length 205 [2021-02-24 03:11:38,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:38,506 INFO L480 AbstractCegarLoop]: Abstraction has 1244 states and 1438 transitions. [2021-02-24 03:11:38,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:11:38,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1438 transitions. [2021-02-24 03:11:38,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-24 03:11:38,511 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:38,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:11:38,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:11:38,512 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:38,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:38,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1912641348, now seen corresponding path program 1 times [2021-02-24 03:11:38,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:38,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888514738] [2021-02-24 03:11:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:38,515 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:38,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:38,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:38,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:38,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:38,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:38,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:38,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:38,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:38,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:38,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:38,918 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:38,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:38,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:38,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:38,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:38,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:38,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:38,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:38,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:38,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:38,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:38,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:38,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:38,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:38,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:38,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:38,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:39,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:11:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:39,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:39,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:11:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:39,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:39,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:11:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-02-24 03:11:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-02-24 03:11:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:39,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888514738] [2021-02-24 03:11:39,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:39,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 03:11:39,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252794591] [2021-02-24 03:11:39,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 03:11:39,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:39,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 03:11:39,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-24 03:11:39,195 INFO L87 Difference]: Start difference. First operand 1244 states and 1438 transitions. Second operand 13 states. [2021-02-24 03:11:39,920 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:40,297 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:11:40,725 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:41,135 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:41,516 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:42,704 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:43,096 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:43,521 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:43,919 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:44,284 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:46,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:46,632 INFO L93 Difference]: Finished difference Result 2783 states and 3458 transitions. [2021-02-24 03:11:46,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 03:11:46,633 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 205 [2021-02-24 03:11:46,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:46,644 INFO L225 Difference]: With dead ends: 2783 [2021-02-24 03:11:46,644 INFO L226 Difference]: Without dead ends: 1654 [2021-02-24 03:11:46,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-24 03:11:46,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2021-02-24 03:11:47,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1268. [2021-02-24 03:11:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1268 states. [2021-02-24 03:11:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1462 transitions. [2021-02-24 03:11:47,354 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1462 transitions. Word has length 205 [2021-02-24 03:11:47,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:47,356 INFO L480 AbstractCegarLoop]: Abstraction has 1268 states and 1462 transitions. [2021-02-24 03:11:47,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 03:11:47,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1462 transitions. [2021-02-24 03:11:47,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-24 03:11:47,361 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:47,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:11:47,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 03:11:47,362 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:47,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:47,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1982159457, now seen corresponding path program 1 times [2021-02-24 03:11:47,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:47,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741655785] [2021-02-24 03:11:47,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:47,366 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:47,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:47,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:47,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:47,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:11:47,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:47,769 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:47,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:47,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:11:47,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:47,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:47,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:47,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:47,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:47,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:11:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:47,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:47,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:47,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:47,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:47,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:47,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:47,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:11:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:47,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:47,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:11:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:47,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-02-24 03:11:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:47,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-02-24 03:11:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:47,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:47,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:48,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741655785] [2021-02-24 03:11:48,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:48,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 03:11:48,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622332253] [2021-02-24 03:11:48,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 03:11:48,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:48,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 03:11:48,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:11:48,035 INFO L87 Difference]: Start difference. First operand 1268 states and 1462 transitions. Second operand 7 states. [2021-02-24 03:11:48,660 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:49,404 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:53,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:53,776 INFO L93 Difference]: Finished difference Result 4121 states and 5140 transitions. [2021-02-24 03:11:53,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 03:11:53,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2021-02-24 03:11:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:53,795 INFO L225 Difference]: With dead ends: 4121 [2021-02-24 03:11:53,796 INFO L226 Difference]: Without dead ends: 2968 [2021-02-24 03:11:53,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-02-24 03:11:53,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2021-02-24 03:11:55,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2464. [2021-02-24 03:11:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2464 states. [2021-02-24 03:11:55,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 2870 transitions. [2021-02-24 03:11:55,137 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 2870 transitions. Word has length 205 [2021-02-24 03:11:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:55,138 INFO L480 AbstractCegarLoop]: Abstraction has 2464 states and 2870 transitions. [2021-02-24 03:11:55,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 03:11:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 2870 transitions. [2021-02-24 03:11:55,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-24 03:11:55,142 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:55,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:11:55,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 03:11:55,143 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:55,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:55,143 INFO L82 PathProgramCache]: Analyzing trace with hash -767151286, now seen corresponding path program 1 times [2021-02-24 03:11:55,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:55,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321691022] [2021-02-24 03:11:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:55,147 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:11:55,224 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:11:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:11:55,298 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:11:55,536 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:11:55,536 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:11:55,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 03:11:55,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:11:55 BoogieIcfgContainer [2021-02-24 03:11:55,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:11:55,582 INFO L168 Benchmark]: Toolchain (without parser) took 58309.87 ms. Allocated memory was 158.3 MB in the beginning and 1.0 GB in the end (delta: 871.4 MB). Free memory was 134.4 MB in the beginning and 812.1 MB in the end (delta: -677.7 MB). Peak memory consumption was 194.3 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:55,582 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory is still 134.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:11:55,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.34 ms. Allocated memory is still 158.3 MB. Free memory was 133.5 MB in the beginning and 111.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:55,590 INFO L168 Benchmark]: Boogie Preprocessor took 147.24 ms. Allocated memory is still 158.3 MB. Free memory was 111.7 MB in the beginning and 107.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:55,590 INFO L168 Benchmark]: RCFGBuilder took 1535.15 ms. Allocated memory is still 158.3 MB. Free memory was 107.6 MB in the beginning and 92.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 28.4 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:55,590 INFO L168 Benchmark]: TraceAbstraction took 55915.59 ms. Allocated memory was 158.3 MB in the beginning and 1.0 GB in the end (delta: 871.4 MB). Free memory was 91.5 MB in the beginning and 812.1 MB in the end (delta: -720.7 MB). Peak memory consumption was 150.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:55,591 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory is still 134.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 691.34 ms. Allocated memory is still 158.3 MB. Free memory was 133.5 MB in the beginning and 111.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 147.24 ms. Allocated memory is still 158.3 MB. Free memory was 111.7 MB in the beginning and 107.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1535.15 ms. Allocated memory is still 158.3 MB. Free memory was 107.6 MB in the beginning and 92.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 28.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 55915.59 ms. Allocated memory was 158.3 MB in the beginning and 1.0 GB in the end (delta: 871.4 MB). Free memory was 91.5 MB in the beginning and 812.1 MB in the end (delta: -720.7 MB). Peak memory consumption was 150.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 508]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L161] int pumpRunning = 0; [L162] int systemActive = 1; [L401] int waterLevel = 1; [L402] int methaneLevelCritical = 0; [L513] int cleanupTimeShifts = 4; [L804] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L586] int retValue_acc ; [L587] int tmp ; [L591] FCALL select_helpers() [L592] FCALL select_features() [L593] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L593] RET, EXPR valid_product() [L593] tmp = valid_product() [L595] COND TRUE \read(tmp) [L597] FCALL setup() [L598] CALL runTest() [L580] CALL test() [L86] int splverifierCounter ; [L87] int tmp ; [L88] int tmp___0 ; [L89] int tmp___1 ; [L90] int tmp___2 ; [L93] splverifierCounter = 0 [L95] COND TRUE 1 [L97] COND TRUE splverifierCounter < 4 [L103] tmp = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp) [L107] CALL waterRise() [L419] COND TRUE waterLevel < 2 [L420] waterLevel = waterLevel + 1 [L107] RET waterRise() [L113] tmp___0 = __VERIFIER_nondet_int() [L115] COND TRUE \read(tmp___0) [L117] CALL changeMethaneLevel() [L431] COND FALSE !(\read(methaneLevelCritical)) [L434] methaneLevelCritical = 1 [L117] RET changeMethaneLevel() [L123] tmp___2 = __VERIFIER_nondet_int() [L125] COND TRUE \read(tmp___2) [L140] CALL timeShift() [L169] COND FALSE !(\read(pumpRunning)) [L176] COND TRUE \read(systemActive) [L178] CALL processEnvironment() [L250] int tmp ; [L253] COND FALSE !(\read(pumpRunning)) [L268] CALL processEnvironment__wrappee__lowWaterSensor() [L224] int tmp ; [L227] COND FALSE !(\read(pumpRunning)) [L242] CALL processEnvironment__wrappee__highWaterSensor() [L198] int tmp ; [L201] COND TRUE ! pumpRunning [L203] CALL, EXPR isHighWaterLevel() [L347] int retValue_acc ; [L348] int tmp ; [L349] int tmp___0 ; [L353] CALL, EXPR isHighWaterSensorDry() [L481] int retValue_acc ; [L484] COND FALSE !(waterLevel < 2) [L488] retValue_acc = 0 [L489] return (retValue_acc); [L353] RET, EXPR isHighWaterSensorDry() [L353] tmp = isHighWaterSensorDry() [L355] COND FALSE !(\read(tmp)) [L358] tmp___0 = 1 [L360] retValue_acc = tmp___0 [L361] return (retValue_acc); [L203] RET, EXPR isHighWaterLevel() [L203] tmp = isHighWaterLevel() [L205] COND TRUE \read(tmp) [L207] CALL activatePump() [L278] pumpRunning = 1 [L207] RET activatePump() [L242] RET processEnvironment__wrappee__highWaterSensor() [L268] RET processEnvironment__wrappee__lowWaterSensor() [L178] RET processEnvironment() [L184] CALL __utac_acc__Specification1_spec__1() [L610] int tmp ; [L611] int tmp___0 ; [L615] CALL, EXPR isMethaneLevelCritical() [L440] int retValue_acc ; [L443] retValue_acc = methaneLevelCritical [L444] return (retValue_acc); [L615] RET, EXPR isMethaneLevelCritical() [L615] tmp = isMethaneLevelCritical() [L617] COND TRUE \read(tmp) [L619] CALL, EXPR isPumpRunning() [L302] int retValue_acc ; [L305] retValue_acc = pumpRunning [L306] return (retValue_acc); [L619] RET, EXPR isPumpRunning() [L619] tmp___0 = isPumpRunning() [L621] COND TRUE \read(tmp___0) [L623] CALL __automaton_fail() [L508] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 664 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 55.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 45.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2226 SDtfs, 3763 SDslu, 4093 SDs, 0 SdLazy, 9271 SolverSat, 1184 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 196 SyntacticMatches, 5 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 19.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2464occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 1834 StatesRemovedByMinimization, 8 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...