/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_product02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:00:52,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:00:52,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:00:52,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:00:52,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:00:52,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:00:52,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:00:52,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:00:52,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:00:52,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:00:52,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:00:52,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:00:52,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:00:52,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:00:52,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:00:52,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:00:52,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:00:52,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:00:52,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:00:52,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:00:52,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:00:52,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:00:52,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:00:52,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:00:52,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:00:52,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:00:52,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:00:52,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:00:52,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:00:52,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:00:52,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:00:52,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:00:52,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:00:52,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:00:52,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:00:52,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:00:52,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:00:52,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:00:52,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:00:52,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:00:52,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:00:52,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:00:52,995 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:00:52,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:00:53,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:00:53,001 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:00:53,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:00:53,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:00:53,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:00:53,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:00:53,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:00:53,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:00:53,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:00:53,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:00:53,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:00:53,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:00:53,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:00:53,007 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:00:53,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:00:53,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:00:53,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:00:53,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:00:53,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:00:53,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:00:53,009 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:00:53,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:00:53,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:00:53,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:00:53,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:00:53,486 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:00:53,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product02.cil.c [2021-02-21 19:00:53,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f562ed9/b36fd2ebba5741e6bc1ec433eabc6f57/FLAGd2a140876 [2021-02-21 19:00:54,248 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:00:54,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product02.cil.c [2021-02-21 19:00:54,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f562ed9/b36fd2ebba5741e6bc1ec433eabc6f57/FLAGd2a140876 [2021-02-21 19:00:54,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f562ed9/b36fd2ebba5741e6bc1ec433eabc6f57 [2021-02-21 19:00:54,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:00:54,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:00:54,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:00:54,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:00:54,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:00:54,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:00:54" (1/1) ... [2021-02-21 19:00:54,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b7abfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:54, skipping insertion in model container [2021-02-21 19:00:54,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:00:54" (1/1) ... [2021-02-21 19:00:54,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:00:54,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:00:54,726 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_product02.cil.c[1281,1294] [2021-02-21 19:00:54,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:00:54,942 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:00:54,957 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_product02.cil.c[1281,1294] [2021-02-21 19:00:55,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:00:55,095 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:00:55,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:55 WrapperNode [2021-02-21 19:00:55,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:00:55,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:00:55,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:00:55,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:00:55,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:55" (1/1) ... [2021-02-21 19:00:55,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:55" (1/1) ... [2021-02-21 19:00:55,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:55" (1/1) ... [2021-02-21 19:00:55,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:55" (1/1) ... [2021-02-21 19:00:55,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:55" (1/1) ... [2021-02-21 19:00:55,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:55" (1/1) ... [2021-02-21 19:00:55,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:55" (1/1) ... [2021-02-21 19:00:55,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:00:55,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:00:55,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:00:55,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:00:55,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:00:55,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:00:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:00:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:00:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:00:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:00:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:00:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:00:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:00:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:00:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:00:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:00:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:00:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:00:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:00:55,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:00:55,348 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:00:55,348 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:00:55,348 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:00:55,348 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:00:55,348 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:00:55,349 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:00:55,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:00:55,349 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:00:55,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:00:55,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:00:55,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:00:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:00:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:00:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:00:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:00:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:00:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:00:55,351 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:00:55,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:00:55,351 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:00:55,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:00:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:00:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:00:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:00:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:00:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:00:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:00:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:00:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:00:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:00:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:00:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:00:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:00:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:00:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:00:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:00:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:00:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:00:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:00:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:00:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:00:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:00:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:00:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:00:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:00:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:00:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:00:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:00:55,356 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:00:55,356 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:00:55,356 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:00:55,356 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:00:55,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:00:55,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:00:55,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:00:55,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:00:55,357 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:00:55,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:00:55,357 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:00:55,357 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:00:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:00:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:00:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:00:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:00:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:00:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:00:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:00:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:00:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:00:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:00:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:00:56,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:00:56,525 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:00:56,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:00:56 BoogieIcfgContainer [2021-02-21 19:00:56,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:00:56,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:00:56,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:00:56,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:00:56,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:00:54" (1/3) ... [2021-02-21 19:00:56,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171d6032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:00:56, skipping insertion in model container [2021-02-21 19:00:56,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:55" (2/3) ... [2021-02-21 19:00:56,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171d6032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:00:56, skipping insertion in model container [2021-02-21 19:00:56,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:00:56" (3/3) ... [2021-02-21 19:00:56,537 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product02.cil.c [2021-02-21 19:00:56,544 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:00:56,550 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:00:56,570 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:00:56,594 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:00:56,594 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:00:56,594 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:00:56,594 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:00:56,594 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:00:56,594 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:00:56,594 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:00:56,595 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:00:56,616 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states. [2021-02-21 19:00:56,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:00:56,634 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:56,635 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 19:00:56,636 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:56,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:56,642 INFO L82 PathProgramCache]: Analyzing trace with hash 725881974, now seen corresponding path program 1 times [2021-02-21 19:00:56,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:56,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777799099] [2021-02-21 19:00:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:56,734 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,345 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:57,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:00:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:00:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:57,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777799099] [2021-02-21 19:00:57,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:57,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:00:57,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188571143] [2021-02-21 19:00:57,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:00:57,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:57,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:00:57,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:00:57,605 INFO L87 Difference]: Start difference. First operand 251 states. Second operand 3 states. [2021-02-21 19:00:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:58,921 INFO L93 Difference]: Finished difference Result 358 states and 430 transitions. [2021-02-21 19:00:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:00:58,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:00:58,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:58,939 INFO L225 Difference]: With dead ends: 358 [2021-02-21 19:00:58,939 INFO L226 Difference]: Without dead ends: 237 [2021-02-21 19:00:58,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:00:58,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-02-21 19:00:59,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 199. [2021-02-21 19:00:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2021-02-21 19:00:59,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 212 transitions. [2021-02-21 19:00:59,060 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 212 transitions. Word has length 147 [2021-02-21 19:00:59,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:59,062 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 212 transitions. [2021-02-21 19:00:59,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:00:59,062 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 212 transitions. [2021-02-21 19:00:59,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:00:59,066 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:59,066 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 19:00:59,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:00:59,067 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:59,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:59,067 INFO L82 PathProgramCache]: Analyzing trace with hash 295158965, now seen corresponding path program 1 times [2021-02-21 19:00:59,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:59,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757535208] [2021-02-21 19:00:59,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:59,072 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:59,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,539 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:59,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:00:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:00:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:59,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757535208] [2021-02-21 19:00:59,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:59,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:00:59,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364436911] [2021-02-21 19:00:59,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:00:59,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:59,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:00:59,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:00:59,671 INFO L87 Difference]: Start difference. First operand 199 states and 212 transitions. Second operand 4 states. [2021-02-21 19:01:00,442 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:01:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:01,064 INFO L93 Difference]: Finished difference Result 270 states and 300 transitions. [2021-02-21 19:01:01,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:01:01,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:01:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:01,070 INFO L225 Difference]: With dead ends: 270 [2021-02-21 19:01:01,070 INFO L226 Difference]: Without dead ends: 220 [2021-02-21 19:01:01,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:01:01,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-02-21 19:01:01,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 189. [2021-02-21 19:01:01,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2021-02-21 19:01:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 199 transitions. [2021-02-21 19:01:01,152 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 199 transitions. Word has length 148 [2021-02-21 19:01:01,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:01,153 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 199 transitions. [2021-02-21 19:01:01,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:01:01,153 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 199 transitions. [2021-02-21 19:01:01,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:01:01,155 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:01,156 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 19:01:01,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:01:01,156 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:01,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:01,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1849091857, now seen corresponding path program 1 times [2021-02-21 19:01:01,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:01,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636340742] [2021-02-21 19:01:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:01,161 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:01,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:01,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:01,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:01,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:01,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:01,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:01,648 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:01,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:01,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:01,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:01,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:01,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:01,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:01,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:01,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:01:01,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:01:01,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:01,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:01,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:01:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:01,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:01,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:01:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:01,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:01,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:01:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:01,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:01,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:01,835 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 19:01:01,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636340742] [2021-02-21 19:01:01,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:01,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:01:01,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081257172] [2021-02-21 19:01:01,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:01:01,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:01,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:01:01,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:01:01,838 INFO L87 Difference]: Start difference. First operand 189 states and 199 transitions. Second operand 10 states. [2021-02-21 19:01:02,581 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:03,029 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:01:03,445 WARN L202 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:01:03,837 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:04,181 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:04,549 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:05,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:05,658 INFO L93 Difference]: Finished difference Result 316 states and 362 transitions. [2021-02-21 19:01:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:01:05,660 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:01:05,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:05,663 INFO L225 Difference]: With dead ends: 316 [2021-02-21 19:01:05,663 INFO L226 Difference]: Without dead ends: 242 [2021-02-21 19:01:05,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-21 19:01:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-02-21 19:01:05,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 189. [2021-02-21 19:01:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2021-02-21 19:01:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 198 transitions. [2021-02-21 19:01:05,735 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 198 transitions. Word has length 161 [2021-02-21 19:01:05,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:05,736 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 198 transitions. [2021-02-21 19:01:05,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:01:05,736 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 198 transitions. [2021-02-21 19:01:05,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-02-21 19:01:05,738 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:05,738 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] [2021-02-21 19:01:05,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:01:05,739 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:05,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:05,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2052020101, now seen corresponding path program 1 times [2021-02-21 19:01:05,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:05,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722046643] [2021-02-21 19:01:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:05,743 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:05,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:05,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:05,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:05,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:05,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:05,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:05,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:05,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:05,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:05,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:05,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:05,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:05,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:05,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:05,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:05,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:05,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:05,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:05,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:05,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:05,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:05,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:06,193 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:06,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:06,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:06,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:06,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:06,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:01:06,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:06,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:06,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:06,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:06,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:06,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:06,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:06,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:06,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:06,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:06,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:01:06,369 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:01:06,371 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:01:06,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:06,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:06,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:06,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:01:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:06,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:06,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:06,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:01:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:06,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:06,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 19:01:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:06,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:06,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:06,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:06,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:06,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:06,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:06,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-21 19:01:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:06,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:06,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:06,492 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 19:01:06,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722046643] [2021-02-21 19:01:06,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:06,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:01:06,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192321444] [2021-02-21 19:01:06,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:01:06,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:06,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:01:06,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:01:06,494 INFO L87 Difference]: Start difference. First operand 189 states and 198 transitions. Second operand 14 states. [2021-02-21 19:01:07,074 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:07,553 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:01:07,953 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:01:08,302 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:08,665 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:09,025 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:09,844 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:01:10,713 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:11,092 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:11,498 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:11,888 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:01:12,241 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:12,614 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:01:12,996 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:01:13,365 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:13,742 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:14,166 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:14,623 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:01:15,022 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:15,426 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:16,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:16,363 INFO L93 Difference]: Finished difference Result 479 states and 573 transitions. [2021-02-21 19:01:16,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:01:16,364 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 164 [2021-02-21 19:01:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:16,369 INFO L225 Difference]: With dead ends: 479 [2021-02-21 19:01:16,369 INFO L226 Difference]: Without dead ends: 405 [2021-02-21 19:01:16,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:01:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-02-21 19:01:16,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 311. [2021-02-21 19:01:16,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2021-02-21 19:01:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 339 transitions. [2021-02-21 19:01:16,544 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 339 transitions. Word has length 164 [2021-02-21 19:01:16,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:16,544 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 339 transitions. [2021-02-21 19:01:16,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:01:16,544 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 339 transitions. [2021-02-21 19:01:16,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-21 19:01:16,547 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:16,547 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] [2021-02-21 19:01:16,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:01:16,548 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:16,549 INFO L82 PathProgramCache]: Analyzing trace with hash 15262989, now seen corresponding path program 1 times [2021-02-21 19:01:16,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:16,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172970557] [2021-02-21 19:01:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:16,552 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:16,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,910 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:16,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:16,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:01:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:01:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 19:01:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 19:01:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:17,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:17,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:17,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-21 19:01:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:17,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:17,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:17,039 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 19:01:17,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172970557] [2021-02-21 19:01:17,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:17,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:01:17,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22025163] [2021-02-21 19:01:17,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:01:17,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:17,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:01:17,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:01:17,042 INFO L87 Difference]: Start difference. First operand 311 states and 339 transitions. Second operand 6 states. [2021-02-21 19:01:17,675 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:18,574 INFO L93 Difference]: Finished difference Result 520 states and 604 transitions. [2021-02-21 19:01:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 19:01:18,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2021-02-21 19:01:18,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:18,579 INFO L225 Difference]: With dead ends: 520 [2021-02-21 19:01:18,579 INFO L226 Difference]: Without dead ends: 380 [2021-02-21 19:01:18,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:01:18,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-02-21 19:01:18,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 293. [2021-02-21 19:01:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2021-02-21 19:01:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 310 transitions. [2021-02-21 19:01:18,696 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 310 transitions. Word has length 169 [2021-02-21 19:01:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:18,696 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 310 transitions. [2021-02-21 19:01:18,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:01:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 310 transitions. [2021-02-21 19:01:18,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-02-21 19:01:18,699 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:18,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:18,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:01:18,700 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:18,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:18,701 INFO L82 PathProgramCache]: Analyzing trace with hash 2076231032, now seen corresponding path program 1 times [2021-02-21 19:01:18,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:18,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232275233] [2021-02-21 19:01:18,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:18,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:18,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:19,251 WARN L202 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2021-02-21 19:01:19,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:19,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-02-21 19:01:19,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:19,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1