/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_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:34:58,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:34:58,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:34:58,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:34:59,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:34:59,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:34:59,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:34:59,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:34:59,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:34:59,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:34:59,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:34:59,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:34:59,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:34:59,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:34:59,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:34:59,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:34:59,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:34:59,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:34:59,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:34:59,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:34:59,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:34:59,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:34:59,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:34:59,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:34:59,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:34:59,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:34:59,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:34:59,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:34:59,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:34:59,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:34:59,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:34:59,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:34:59,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:34:59,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:34:59,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:34:59,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:34:59,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:34:59,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:34:59,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:34:59,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:34:59,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:34:59,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:34:59,142 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:34:59,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:34:59,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:34:59,149 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:34:59,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:34:59,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:34:59,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:34:59,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:34:59,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:34:59,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:34:59,152 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:34:59,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:34:59,152 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:34:59,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:34:59,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:34:59,153 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:34:59,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:34:59,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:34:59,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:34:59,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:34:59,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:34:59,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:34:59,155 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:34:59,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:34:59,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:34:59,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:34:59,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:34:59,637 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:34:59,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2021-02-21 19:34:59,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90c1771b4/a657f00f46194a7798064c459e236272/FLAG280a1bfae [2021-02-21 19:35:00,391 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:35:00,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2021-02-21 19:35:00,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90c1771b4/a657f00f46194a7798064c459e236272/FLAG280a1bfae [2021-02-21 19:35:00,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90c1771b4/a657f00f46194a7798064c459e236272 [2021-02-21 19:35:00,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:35:00,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:35:00,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:35:00,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:35:00,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:35:00,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:35:00" (1/1) ... [2021-02-21 19:35:00,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7841d8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:00, skipping insertion in model container [2021-02-21 19:35:00,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:35:00" (1/1) ... [2021-02-21 19:35:00,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:35:00,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:35:01,247 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_product46.cil.c[12686,12699] [2021-02-21 19:35:01,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:35:01,306 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:35:01,418 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_product46.cil.c[12686,12699] [2021-02-21 19:35:01,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:35:01,535 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:35:01,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:01 WrapperNode [2021-02-21 19:35:01,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:35:01,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:35:01,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:35:01,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:35:01,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:01" (1/1) ... [2021-02-21 19:35:01,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:01" (1/1) ... [2021-02-21 19:35:01,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:01" (1/1) ... [2021-02-21 19:35:01,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:01" (1/1) ... [2021-02-21 19:35:01,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:01" (1/1) ... [2021-02-21 19:35:01,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:01" (1/1) ... [2021-02-21 19:35:01,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:01" (1/1) ... [2021-02-21 19:35:01,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:35:01,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:35:01,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:35:01,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:35:01,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:35:01,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:35:01,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:35:01,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:35:01,871 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:35:01,872 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:35:01,872 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:35:01,872 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:35:01,872 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:35:01,873 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:35:01,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:35:01,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:35:01,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:35:01,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:35:01,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:35:01,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:35:01,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:35:01,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:35:01,876 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:35:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:35:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:35:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:35:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-21 19:35:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:35:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:35:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:35:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:35:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:35:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:35:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:35:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:35:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:35:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:35:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:35:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:35:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:35:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:35:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:35:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:35:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:35:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:35:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:35:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:35:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:35:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:35:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:35:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:35:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:35:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:35:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:35:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:35:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:35:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:35:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:35:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:35:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:35:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:35:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:35:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:35:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:35:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:35:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:35:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:35:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:35:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:35:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:35:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:35:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:35:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:35:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:35:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:35:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:35:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:35:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:35:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:35:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:35:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:35:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:35:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:35:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:35:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:35:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:35:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:35:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:35:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:35:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:35:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:35:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:35:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:35:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:35:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:35:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:35:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-21 19:35:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:35:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:35:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:35:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:35:03,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:35:03,377 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:35:03,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:35:03 BoogieIcfgContainer [2021-02-21 19:35:03,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:35:03,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:35:03,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:35:03,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:35:03,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:35:00" (1/3) ... [2021-02-21 19:35:03,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4e518b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:35:03, skipping insertion in model container [2021-02-21 19:35:03,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:01" (2/3) ... [2021-02-21 19:35:03,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4e518b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:35:03, skipping insertion in model container [2021-02-21 19:35:03,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:35:03" (3/3) ... [2021-02-21 19:35:03,392 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2021-02-21 19:35:03,400 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:35:03,411 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:35:03,433 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:35:03,461 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:35:03,461 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:35:03,462 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:35:03,462 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:35:03,462 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:35:03,462 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:35:03,462 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:35:03,462 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:35:03,489 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states. [2021-02-21 19:35:03,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:35:03,512 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:35:03,513 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] [2021-02-21 19:35:03,513 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:35:03,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:35:03,521 INFO L82 PathProgramCache]: Analyzing trace with hash 8188574, now seen corresponding path program 1 times [2021-02-21 19:35:03,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:35:03,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339255044] [2021-02-21 19:35:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:35:03,614 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:35:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:04,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:04,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:04,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:04,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:04,522 WARN L202 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:35:04,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:35:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:04,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:04,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:04,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:35:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:04,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:04,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:04,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:35:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:04,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:04,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:04,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:35:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:04,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:04,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:04,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:35:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:04,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:04,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:04,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:35:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:04,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:04,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:04,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:35:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:04,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:04,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:35:04,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339255044] [2021-02-21 19:35:04,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:35:04,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:35:04,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706773102] [2021-02-21 19:35:04,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:35:04,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:35:04,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:35:04,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:35:04,766 INFO L87 Difference]: Start difference. First operand 325 states. Second operand 3 states. [2021-02-21 19:35:06,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:35:06,720 INFO L93 Difference]: Finished difference Result 512 states and 606 transitions. [2021-02-21 19:35:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:35:06,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:35:06,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:35:06,762 INFO L225 Difference]: With dead ends: 512 [2021-02-21 19:35:06,763 INFO L226 Difference]: Without dead ends: 317 [2021-02-21 19:35:06,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:35:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-21 19:35:07,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 273. [2021-02-21 19:35:07,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2021-02-21 19:35:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 296 transitions. [2021-02-21 19:35:07,054 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 296 transitions. Word has length 147 [2021-02-21 19:35:07,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:35:07,058 INFO L480 AbstractCegarLoop]: Abstraction has 273 states and 296 transitions. [2021-02-21 19:35:07,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:35:07,058 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 296 transitions. [2021-02-21 19:35:07,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:35:07,076 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:35:07,077 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] [2021-02-21 19:35:07,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:35:07,077 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:35:07,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:35:07,080 INFO L82 PathProgramCache]: Analyzing trace with hash -855485290, now seen corresponding path program 1 times [2021-02-21 19:35:07,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:35:07,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887987309] [2021-02-21 19:35:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:35:07,088 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:35:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:07,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:07,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:07,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:07,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:07,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:07,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:07,648 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:35:07,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:35:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:07,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:07,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:07,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:35:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:07,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:07,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:35:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:07,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:07,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:07,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:35:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:07,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:07,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:07,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:35:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:07,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:07,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:07,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:35:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:07,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:07,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:07,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:35:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:07,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:07,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:35:07,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887987309] [2021-02-21 19:35:07,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:35:07,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:35:07,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820097758] [2021-02-21 19:35:07,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:35:07,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:35:07,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:35:07,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:35:07,756 INFO L87 Difference]: Start difference. First operand 273 states and 296 transitions. Second operand 4 states. [2021-02-21 19:35:08,582 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:35:09,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:35:09,868 INFO L93 Difference]: Finished difference Result 424 states and 476 transitions. [2021-02-21 19:35:09,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:35:09,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:35:09,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:35:09,873 INFO L225 Difference]: With dead ends: 424 [2021-02-21 19:35:09,874 INFO L226 Difference]: Without dead ends: 300 [2021-02-21 19:35:09,876 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 [2021-02-21 19:35:09,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-02-21 19:35:09,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 263. [2021-02-21 19:35:09,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2021-02-21 19:35:09,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 283 transitions. [2021-02-21 19:35:09,977 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 283 transitions. Word has length 148 [2021-02-21 19:35:09,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:35:09,978 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 283 transitions. [2021-02-21 19:35:09,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:35:09,978 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 283 transitions. [2021-02-21 19:35:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:35:09,981 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:35:09,981 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] [2021-02-21 19:35:09,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:35:09,981 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:35:09,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:35:09,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1636685667, now seen corresponding path program 1 times [2021-02-21 19:35:09,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:35:09,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806127415] [2021-02-21 19:35:09,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:35:09,987 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:35:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:10,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:10,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:10,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:10,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:10,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:35:10,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:10,528 WARN L202 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:35:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:35:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:10,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:10,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:35:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:10,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:10,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:35:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:10,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:10,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:35:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:10,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:10,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:35:10,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:35:10,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:35:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:10,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:10,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:35:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:10,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:10,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:35:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:10,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:10,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:35:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:10,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:10,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:35:10,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806127415] [2021-02-21 19:35:10,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:35:10,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:35:10,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807372956] [2021-02-21 19:35:10,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:35:10,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:35:10,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:35:10,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:35:10,787 INFO L87 Difference]: Start difference. First operand 263 states and 283 transitions. Second operand 10 states. [2021-02-21 19:35:11,483 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:35:11,903 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:35:12,295 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:35:12,659 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:35:13,040 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:35:13,414 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:35:15,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:35:15,437 INFO L93 Difference]: Finished difference Result 470 states and 538 transitions. [2021-02-21 19:35:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:35:15,437 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:35:15,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:35:15,441 INFO L225 Difference]: With dead ends: 470 [2021-02-21 19:35:15,442 INFO L226 Difference]: Without dead ends: 322 [2021-02-21 19:35:15,443 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 [2021-02-21 19:35:15,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-02-21 19:35:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 263. [2021-02-21 19:35:15,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2021-02-21 19:35:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 282 transitions. [2021-02-21 19:35:15,576 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 282 transitions. Word has length 161 [2021-02-21 19:35:15,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:35:15,577 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 282 transitions. [2021-02-21 19:35:15,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:35:15,577 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 282 transitions. [2021-02-21 19:35:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-21 19:35:15,580 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:35:15,581 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] [2021-02-21 19:35:15,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:35:15,581 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:35:15,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:35:15,582 INFO L82 PathProgramCache]: Analyzing trace with hash 592124761, now seen corresponding path program 1 times [2021-02-21 19:35:15,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:35:15,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350159665] [2021-02-21 19:35:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:35:15,586 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:35:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:15,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:15,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:15,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:15,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:15,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:15,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:15,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:15,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:15,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:15,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:15,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:15,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:16,023 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:35:16,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:35:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:16,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:16,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:16,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:35:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:16,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:16,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:35:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:16,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:16,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:35:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:16,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:16,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:35:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:16,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:16,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:35:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:16,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:16,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:35:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:16,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:16,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:16,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:16,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:35:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:16,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:16,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:35:16,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:35:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:16,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:16,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-21 19:35:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:16,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:16,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-21 19:35:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:16,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:16,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:35:16,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350159665] [2021-02-21 19:35:16,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:35:16,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 19:35:16,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464668387] [2021-02-21 19:35:16,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 19:35:16,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:35:16,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 19:35:16,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 19:35:16,197 INFO L87 Difference]: Start difference. First operand 263 states and 282 transitions. Second operand 7 states. [2021-02-21 19:35:16,955 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:35:19,068 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:35:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:35:19,952 INFO L93 Difference]: Finished difference Result 663 states and 780 transitions. [2021-02-21 19:35:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 19:35:19,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2021-02-21 19:35:19,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:35:19,958 INFO L225 Difference]: With dead ends: 663 [2021-02-21 19:35:19,958 INFO L226 Difference]: Without dead ends: 515 [2021-02-21 19:35:19,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:35:19,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-02-21 19:35:20,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 388. [2021-02-21 19:35:20,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2021-02-21 19:35:20,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 415 transitions. [2021-02-21 19:35:20,160 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 415 transitions. Word has length 174 [2021-02-21 19:35:20,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:35:20,160 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 415 transitions. [2021-02-21 19:35:20,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 19:35:20,161 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 415 transitions. [2021-02-21 19:35:20,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-21 19:35:20,164 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:35:20,164 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] [2021-02-21 19:35:20,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:35:20,165 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:35:20,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:35:20,166 INFO L82 PathProgramCache]: Analyzing trace with hash -2096023539, now seen corresponding path program 1 times [2021-02-21 19:35:20,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:35:20,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211850014] [2021-02-21 19:35:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:35:20,170 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:35:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:20,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:20,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:20,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:20,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:20,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:35:20,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:35:20,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:35:20,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:35:20,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:35:20,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:35:20,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:20,603 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:35:20,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:35:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:20,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:20,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:35:20,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:35:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:20,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:20,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:35:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:20,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:20,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:35:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:20,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:20,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:35:20,702 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:35:20,703 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:35:20,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:35:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:20,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:20,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:35:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:20,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:20,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:35:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:20,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:20,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:35:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:20,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:20,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:35:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:20,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:20,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 19:35:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:20,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 19:35:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:20,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:20,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-02-21 19:35:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:20,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:20,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:20,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:20,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-21 19:35:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:20,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:20,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:35:20,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211850014] [2021-02-21 19:35:20,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:35:20,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 19:35:20,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685748056] [2021-02-21 19:35:20,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 19:35:20,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:35:20,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 19:35:20,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:35:20,901 INFO L87 Difference]: Start difference. First operand 388 states and 415 transitions. Second operand 15 states. [2021-02-21 19:35:21,607 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:35:22,099 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:35:22,486 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:35:22,885 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:35:23,271 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:35:23,617 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:35:24,434 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:35:26,063 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:35:26,454 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:35:26,901 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:35:27,295 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:35:27,694 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:35:28,077 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:35:28,454 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:35:28,914 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:35:29,404 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:35:29,796 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:35:32,303 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:35:32,713 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:35:33,356 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:35:34,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:35:34,823 INFO L93 Difference]: Finished difference Result 1375 states and 1709 transitions. [2021-02-21 19:35:34,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-21 19:35:34,823 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 198 [2021-02-21 19:35:34,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:35:34,833 INFO L225 Difference]: With dead ends: 1375 [2021-02-21 19:35:34,834 INFO L226 Difference]: Without dead ends: 1102 [2021-02-21 19:35:34,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-21 19:35:34,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-02-21 19:35:35,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 803. [2021-02-21 19:35:35,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2021-02-21 19:35:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 885 transitions. [2021-02-21 19:35:35,199 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 885 transitions. Word has length 198 [2021-02-21 19:35:35,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:35:35,200 INFO L480 AbstractCegarLoop]: Abstraction has 803 states and 885 transitions. [2021-02-21 19:35:35,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 19:35:35,200 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 885 transitions. [2021-02-21 19:35:35,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-02-21 19:35:35,207 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:35:35,208 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, 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] [2021-02-21 19:35:35,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:35:35,209 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:35:35,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:35:35,209 INFO L82 PathProgramCache]: Analyzing trace with hash -636988500, now seen corresponding path program 1 times [2021-02-21 19:35:35,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:35:35,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450049843] [2021-02-21 19:35:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:35:35,534 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2021-02-21 19:35:35,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:35,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134