/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:41:49,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:41:49,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:41:50,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:41:50,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:41:50,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:41:50,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:41:50,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:41:50,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:41:50,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:41:50,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:41:50,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:41:50,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:41:50,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:41:50,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:41:50,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:41:50,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:41:50,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:41:50,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:41:50,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:41:50,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:41:50,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:41:50,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:41:50,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:41:50,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:41:50,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:41:50,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:41:50,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:41:50,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:41:50,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:41:50,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:41:50,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:41:50,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:41:50,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:41:50,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:41:50,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:41:50,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:41:50,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:41:50,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:41:50,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:41:50,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:41:50,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:41:50,155 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:41:50,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:41:50,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:41:50,160 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:41:50,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:41:50,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:41:50,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:41:50,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:41:50,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:41:50,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:41:50,163 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:41:50,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:41:50,163 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:41:50,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:41:50,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:41:50,164 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:41:50,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:41:50,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:41:50,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:41:50,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:41:50,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:41:50,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:41:50,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:41:50,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:41:50,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:41:50,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:41:50,576 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:41:50,576 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:41:50,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product18.cil.c [2021-02-23 16:41:50,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38441bc05/02536154bc3b4ab3a669affa60b02d58/FLAG2dbf09fef [2021-02-23 16:41:51,345 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:41:51,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product18.cil.c [2021-02-23 16:41:51,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38441bc05/02536154bc3b4ab3a669affa60b02d58/FLAG2dbf09fef [2021-02-23 16:41:51,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38441bc05/02536154bc3b4ab3a669affa60b02d58 [2021-02-23 16:41:51,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:41:51,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:41:51,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:41:51,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:41:51,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:41:51,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:41:51" (1/1) ... [2021-02-23 16:41:51,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b47877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:51, skipping insertion in model container [2021-02-23 16:41:51,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:41:51" (1/1) ... [2021-02-23 16:41:51,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:41:51,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:41:52,008 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_spec4_product18.cil.c[7655,7668] [2021-02-23 16:41:52,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:41:52,135 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:41:52,179 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_spec4_product18.cil.c[7655,7668] [2021-02-23 16:41:52,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:41:52,251 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:41:52,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:52 WrapperNode [2021-02-23 16:41:52,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:41:52,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:41:52,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:41:52,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:41:52,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:52" (1/1) ... [2021-02-23 16:41:52,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:52" (1/1) ... [2021-02-23 16:41:52,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:52" (1/1) ... [2021-02-23 16:41:52,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:52" (1/1) ... [2021-02-23 16:41:52,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:52" (1/1) ... [2021-02-23 16:41:52,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:52" (1/1) ... [2021-02-23 16:41:52,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:52" (1/1) ... [2021-02-23 16:41:52,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:41:52,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:41:52,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:41:52,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:41:52,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:52" (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 [2021-02-23 16:41:52,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:41:52,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:41:52,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:41:52,551 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:41:52,552 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:41:52,552 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:41:52,552 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:41:52,552 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:41:52,552 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:41:52,553 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:41:52,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:41:52,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:41:52,553 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:41:52,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:41:52,554 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:41:52,554 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:41:52,554 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:41:52,554 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:41:52,554 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:41:52,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:41:52,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:41:52,555 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:41:52,555 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:41:52,555 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:41:52,555 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:41:52,556 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:41:52,556 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:41:52,556 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:41:52,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:41:52,556 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:41:52,557 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:41:52,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:41:52,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:41:52,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:41:52,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:41:52,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:41:52,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:41:52,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:41:52,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:41:52,558 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:41:52,558 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:41:52,558 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:41:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:41:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:41:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:41:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:41:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:41:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:41:52,560 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:41:52,560 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:41:52,560 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:41:52,560 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:41:52,560 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:41:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:41:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:41:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:41:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:41:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:41:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:41:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:41:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:41:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:41:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:41:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:41:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:41:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:41:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:41:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:41:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:41:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:41:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:41:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:41:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:41:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:41:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:41:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:41:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:41:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:41:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:41:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:41:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:41:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:41:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:41:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:41:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:41:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:41:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:41:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:41:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:41:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:41:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:41:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:41:54,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:41:54,236 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:41:54,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:41:54 BoogieIcfgContainer [2021-02-23 16:41:54,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:41:54,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:41:54,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:41:54,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:41:54,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:41:51" (1/3) ... [2021-02-23 16:41:54,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b970eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:41:54, skipping insertion in model container [2021-02-23 16:41:54,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:52" (2/3) ... [2021-02-23 16:41:54,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b970eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:41:54, skipping insertion in model container [2021-02-23 16:41:54,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:41:54" (3/3) ... [2021-02-23 16:41:54,251 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product18.cil.c [2021-02-23 16:41:54,259 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:41:54,265 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:41:54,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:41:54,354 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:41:54,354 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:41:54,354 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:41:54,355 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:41:54,355 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:41:54,355 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:41:54,355 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:41:54,355 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:41:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2021-02-23 16:41:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:41:54,412 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:41:54,413 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] [2021-02-23 16:41:54,414 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:41:54,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:41:54,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1607137674, now seen corresponding path program 1 times [2021-02-23 16:41:54,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:41:54,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419483568] [2021-02-23 16:41:54,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:41:54,514 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:41:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:54,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:54,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:54,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:54,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:55,329 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:41:55,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:41:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:55,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:55,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:55,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:41:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:55,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:55,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:55,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:41:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:55,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:55,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:55,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:41:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:55,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:55,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:55,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:41:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:55,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:55,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:55,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:41:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:55,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:55,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:55,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:41:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:55,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:55,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:55,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:41:55,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419483568] [2021-02-23 16:41:55,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:41:55,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:41:55,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106601818] [2021-02-23 16:41:55,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:41:55,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:41:55,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:41:55,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:41:55,529 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2021-02-23 16:41:57,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:41:57,158 INFO L93 Difference]: Finished difference Result 428 states and 509 transitions. [2021-02-23 16:41:57,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:41:57,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:41:57,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:41:57,178 INFO L225 Difference]: With dead ends: 428 [2021-02-23 16:41:57,178 INFO L226 Difference]: Without dead ends: 273 [2021-02-23 16:41:57,183 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 [2021-02-23 16:41:57,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-02-23 16:41:57,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 233. [2021-02-23 16:41:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2021-02-23 16:41:57,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 250 transitions. [2021-02-23 16:41:57,332 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 250 transitions. Word has length 147 [2021-02-23 16:41:57,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:41:57,334 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 250 transitions. [2021-02-23 16:41:57,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:41:57,334 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 250 transitions. [2021-02-23 16:41:57,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:41:57,340 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:41:57,341 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] [2021-02-23 16:41:57,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:41:57,342 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:41:57,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:41:57,342 INFO L82 PathProgramCache]: Analyzing trace with hash 906955876, now seen corresponding path program 1 times [2021-02-23 16:41:57,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:41:57,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748376062] [2021-02-23 16:41:57,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:41:57,348 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:41:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:57,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:57,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:57,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:57,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:57,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:57,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:57,861 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:41:57,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:41:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:57,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:57,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:57,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:41:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:57,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:57,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:57,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:41:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:57,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:57,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:57,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:41:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:57,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:57,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:57,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:41:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:57,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:57,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:57,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:41:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:57,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:57,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:57,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:41:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:57,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:57,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:41:57,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748376062] [2021-02-23 16:41:57,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:41:57,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:41:57,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927374550] [2021-02-23 16:41:57,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:41:57,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:41:57,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:41:57,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:41:57,981 INFO L87 Difference]: Start difference. First operand 233 states and 250 transitions. Second operand 4 states. [2021-02-23 16:41:58,754 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:41:59,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:41:59,605 INFO L93 Difference]: Finished difference Result 340 states and 379 transitions. [2021-02-23 16:41:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:41:59,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:41:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:41:59,617 INFO L225 Difference]: With dead ends: 340 [2021-02-23 16:41:59,617 INFO L226 Difference]: Without dead ends: 256 [2021-02-23 16:41:59,623 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 [2021-02-23 16:41:59,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-02-23 16:41:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 223. [2021-02-23 16:41:59,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-23 16:41:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 237 transitions. [2021-02-23 16:41:59,772 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 237 transitions. Word has length 148 [2021-02-23 16:41:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:41:59,775 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 237 transitions. [2021-02-23 16:41:59,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:41:59,775 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 237 transitions. [2021-02-23 16:41:59,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:41:59,787 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:41:59,788 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] [2021-02-23 16:41:59,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:41:59,789 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:41:59,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:41:59,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1309100809, now seen corresponding path program 1 times [2021-02-23 16:41:59,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:41:59,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016684168] [2021-02-23 16:41:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:41:59,797 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:41:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:59,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:59,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:59,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:59,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:59,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:59,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:59,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:59,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:59,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:59,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:41:59,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:59,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:00,345 WARN L202 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:00,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:00,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:00,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:00,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:00,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:00,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:00,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:00,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:00,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:00,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:00,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:00,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:00,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:42:00,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:00,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:42:00,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:00,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:00,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:00,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:42:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:00,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:00,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:00,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:42:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:00,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:00,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:00,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:42:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:00,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:00,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:00,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:42:00,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016684168] [2021-02-23 16:42:00,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:00,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:42:00,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73312797] [2021-02-23 16:42:00,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:42:00,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:00,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:42:00,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:42:00,594 INFO L87 Difference]: Start difference. First operand 223 states and 237 transitions. Second operand 10 states. [2021-02-23 16:42:01,212 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:01,668 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:42:02,055 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:42:02,440 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:02,820 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:03,189 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:04,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:04,659 INFO L93 Difference]: Finished difference Result 386 states and 441 transitions. [2021-02-23 16:42:04,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:42:04,661 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:42:04,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:04,666 INFO L225 Difference]: With dead ends: 386 [2021-02-23 16:42:04,666 INFO L226 Difference]: Without dead ends: 278 [2021-02-23 16:42:04,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:42:04,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-23 16:42:04,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 223. [2021-02-23 16:42:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-23 16:42:04,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 236 transitions. [2021-02-23 16:42:04,767 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 236 transitions. Word has length 161 [2021-02-23 16:42:04,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:04,767 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 236 transitions. [2021-02-23 16:42:04,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:42:04,768 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 236 transitions. [2021-02-23 16:42:04,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-23 16:42:04,770 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:04,770 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] [2021-02-23 16:42:04,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:42:04,770 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:04,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:04,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1988098942, now seen corresponding path program 1 times [2021-02-23 16:42:04,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:04,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295666116] [2021-02-23 16:42:04,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:04,775 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:04,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:04,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:04,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:04,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:04,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:04,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:04,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:04,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:04,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:04,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:04,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:04,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:04,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:04,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:04,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:04,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:04,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:04,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:04,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:04,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:04,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:04,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:05,366 WARN L202 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:05,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:05,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:05,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:05,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:05,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:42:05,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:05,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:05,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:05,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:05,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:05,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:05,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:05,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:05,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:05,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:05,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:42:05,503 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:42:05,506 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:42:05,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:05,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:05,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:05,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:42:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:05,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:05,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:05,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:42:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:05,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:05,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:05,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:42:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:05,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:05,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:05,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:42:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:05,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:05,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:05,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:05,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:05,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:05,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:05,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-23 16:42:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:05,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:05,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:42:05,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295666116] [2021-02-23 16:42:05,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:05,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 16:42:05,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102026043] [2021-02-23 16:42:05,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 16:42:05,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:05,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 16:42:05,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:42:05,689 INFO L87 Difference]: Start difference. First operand 223 states and 236 transitions. Second operand 15 states. [2021-02-23 16:42:06,352 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:06,827 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:42:07,217 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:42:07,617 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:07,967 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:08,305 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:09,130 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:42:10,366 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:10,767 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:11,216 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:11,656 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:42:12,018 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:12,389 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:42:12,764 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:42:13,132 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:13,503 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:13,930 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:14,459 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:42:14,867 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:15,311 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:17,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:17,639 INFO L93 Difference]: Finished difference Result 762 states and 962 transitions. [2021-02-23 16:42:17,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-23 16:42:17,640 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 169 [2021-02-23 16:42:17,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:17,647 INFO L225 Difference]: With dead ends: 762 [2021-02-23 16:42:17,647 INFO L226 Difference]: Without dead ends: 654 [2021-02-23 16:42:17,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 16:42:17,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-02-23 16:42:17,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 415. [2021-02-23 16:42:17,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2021-02-23 16:42:17,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 456 transitions. [2021-02-23 16:42:17,833 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 456 transitions. Word has length 169 [2021-02-23 16:42:17,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:17,834 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 456 transitions. [2021-02-23 16:42:17,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 16:42:17,834 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 456 transitions. [2021-02-23 16:42:17,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-02-23 16:42:17,837 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:17,838 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] [2021-02-23 16:42:17,838 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:42:17,838 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:17,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:17,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1326567580, now seen corresponding path program 1 times [2021-02-23 16:42:17,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:17,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127569546] [2021-02-23 16:42:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:17,843 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:17,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:17,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:17,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:17,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:17,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:17,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:18,193 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:18,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:18,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:18,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:18,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:18,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:18,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:18,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:18,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:18,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:18,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:18,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:18,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:18,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:18,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:18,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:18,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:18,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:18,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-23 16:42:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:18,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:18,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:18,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:42:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:18,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:18,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:18,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:42:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:18,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:18,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:18,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:42:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:18,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:18,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:18,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:42:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:18,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:18,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-23 16:42:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:18,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:18,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-02-23 16:42:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:18,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:18,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:42:18,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127569546] [2021-02-23 16:42:18,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:18,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:42:18,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161513254] [2021-02-23 16:42:18,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:42:18,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:18,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:42:18,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:42:18,416 INFO L87 Difference]: Start difference. First operand 415 states and 456 transitions. Second operand 7 states. [2021-02-23 16:42:19,029 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:20,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:20,050 INFO L93 Difference]: Finished difference Result 695 states and 809 transitions. [2021-02-23 16:42:20,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:42:20,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2021-02-23 16:42:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:20,057 INFO L225 Difference]: With dead ends: 695 [2021-02-23 16:42:20,057 INFO L226 Difference]: Without dead ends: 395 [2021-02-23 16:42:20,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:42:20,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-02-23 16:42:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 308. [2021-02-23 16:42:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2021-02-23 16:42:20,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 325 transitions. [2021-02-23 16:42:20,212 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 325 transitions. Word has length 179 [2021-02-23 16:42:20,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:20,213 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 325 transitions. [2021-02-23 16:42:20,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:42:20,213 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 325 transitions. [2021-02-23 16:42:20,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-02-23 16:42:20,217 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:20,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:42:20,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:42:20,218 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:20,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:20,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1870870535, now seen corresponding path program 1 times [2021-02-23 16:42:20,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:20,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708177245] [2021-02-23 16:42:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY