/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_spec1_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:42:11,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:42:11,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:42:11,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:42:11,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:42:11,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:42:11,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:42:11,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:42:11,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:42:11,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:42:11,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:42:11,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:42:11,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:42:11,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:42:11,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:42:11,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:42:11,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:42:11,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:42:11,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:42:11,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:42:11,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:42:11,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:42:11,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:42:11,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:42:11,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:42:11,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:42:11,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:42:11,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:42:11,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:42:11,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:42:11,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:42:11,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:42:11,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:42:11,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:42:11,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:42:11,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:42:11,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:42:11,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:42:11,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:42:11,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:42:11,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:42:11,442 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 18:42:11,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:42:11,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:42:11,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:42:11,457 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:42:11,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:42:11,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:42:11,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:42:11,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:42:11,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:42:11,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:42:11,458 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:42:11,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:42:11,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:42:11,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:42:11,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:42:11,459 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:42:11,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:42:11,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:42:11,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:42:11,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:42:11,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:42:11,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:42:11,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:42:11,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:42:11,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:42:11,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:42:11,846 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:42:11,846 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:42:11,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2021-02-21 18:42:11,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0778a871e/d25c17f0c5a544fbadc8f5f3e1ff1d21/FLAG3bd9115a3 [2021-02-21 18:42:12,678 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:42:12,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2021-02-21 18:42:12,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0778a871e/d25c17f0c5a544fbadc8f5f3e1ff1d21/FLAG3bd9115a3 [2021-02-21 18:42:12,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0778a871e/d25c17f0c5a544fbadc8f5f3e1ff1d21 [2021-02-21 18:42:12,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:42:12,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:42:12,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:42:12,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:42:12,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:42:12,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:42:12" (1/1) ... [2021-02-21 18:42:12,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1336d111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:12, skipping insertion in model container [2021-02-21 18:42:12,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:42:12" (1/1) ... [2021-02-21 18:42:12,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:42:13,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:42:13,342 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c[12699,12712] [2021-02-21 18:42:13,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:42:13,416 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:42:13,555 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c[12699,12712] [2021-02-21 18:42:13,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:42:13,642 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:42:13,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:13 WrapperNode [2021-02-21 18:42:13,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:42:13,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:42:13,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:42:13,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:42:13,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:13" (1/1) ... [2021-02-21 18:42:13,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:13" (1/1) ... [2021-02-21 18:42:13,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:13" (1/1) ... [2021-02-21 18:42:13,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:13" (1/1) ... [2021-02-21 18:42:13,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:13" (1/1) ... [2021-02-21 18:42:13,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:13" (1/1) ... [2021-02-21 18:42:13,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:13" (1/1) ... [2021-02-21 18:42:13,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:42:13,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:42:13,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:42:13,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:42:13,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:13" (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 18:42:13,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:42:13,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:42:13,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:42:13,905 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:42:13,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:42:13,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:42:13,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:42:13,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:42:13,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:42:13,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:42:13,907 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:42:13,907 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:42:13,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:42:13,908 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:42:13,908 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:42:13,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-21 18:42:13,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:42:13,909 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:42:13,910 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:42:13,910 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:42:13,913 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:42:13,913 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:42:13,913 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:42:13,914 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:42:13,914 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:42:13,914 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:42:13,914 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:42:13,914 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:42:13,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:42:13,915 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:42:13,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:42:13,915 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:42:13,915 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:42:13,915 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:42:13,916 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:42:13,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:42:13,916 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:42:13,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:42:13,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:42:13,916 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:42:13,916 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:42:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:42:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:42:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:42:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:42:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:42:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:42:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:42:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:42:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:42:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:42:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:42:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:42:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:42:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:42:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:42:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:42:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:42:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:42:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:42:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:42:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:42:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:42:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:42:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:42:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:42:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:42:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:42:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:42:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:42:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:42:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:42:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:42:13,923 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:42:13,923 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:42:13,923 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:42:13,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-21 18:42:13,923 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:42:13,924 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:42:13,925 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:42:13,925 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:42:13,926 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:42:13,926 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:42:13,926 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:42:13,927 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:42:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:42:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:42:13,929 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:42:13,929 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:42:13,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:42:13,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:42:13,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:42:15,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:42:15,071 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:42:15,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:42:15 BoogieIcfgContainer [2021-02-21 18:42:15,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:42:15,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:42:15,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:42:15,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:42:15,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:42:12" (1/3) ... [2021-02-21 18:42:15,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e777da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:42:15, skipping insertion in model container [2021-02-21 18:42:15,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:42:13" (2/3) ... [2021-02-21 18:42:15,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e777da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:42:15, skipping insertion in model container [2021-02-21 18:42:15,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:42:15" (3/3) ... [2021-02-21 18:42:15,083 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2021-02-21 18:42:15,090 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:42:15,095 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:42:15,115 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:42:15,139 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:42:15,139 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:42:15,139 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:42:15,139 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:42:15,140 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:42:15,140 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:42:15,140 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:42:15,140 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:42:15,162 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states. [2021-02-21 18:42:15,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 18:42:15,191 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:15,192 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 18:42:15,192 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:15,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:15,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1627698146, now seen corresponding path program 1 times [2021-02-21 18:42:15,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:15,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219168272] [2021-02-21 18:42:15,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:15,297 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:15,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:15,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:15,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:15,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:15,964 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:15,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:42:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:42:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,214 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 18:42:16,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219168272] [2021-02-21 18:42:16,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:16,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:42:16,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074131258] [2021-02-21 18:42:16,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:42:16,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:16,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:42:16,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:42:16,269 INFO L87 Difference]: Start difference. First operand 307 states. Second operand 3 states. [2021-02-21 18:42:17,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:17,996 INFO L93 Difference]: Finished difference Result 473 states and 564 transitions. [2021-02-21 18:42:17,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:42:17,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 18:42:18,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:18,019 INFO L225 Difference]: With dead ends: 473 [2021-02-21 18:42:18,019 INFO L226 Difference]: Without dead ends: 296 [2021-02-21 18:42:18,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:42:18,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-02-21 18:42:18,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 255. [2021-02-21 18:42:18,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2021-02-21 18:42:18,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 277 transitions. [2021-02-21 18:42:18,193 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 277 transitions. Word has length 147 [2021-02-21 18:42:18,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:18,194 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 277 transitions. [2021-02-21 18:42:18,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:42:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 277 transitions. [2021-02-21 18:42:18,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 18:42:18,199 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:18,200 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 18:42:18,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:42:18,200 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:18,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:18,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2118354520, now seen corresponding path program 1 times [2021-02-21 18:42:18,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:18,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121878116] [2021-02-21 18:42:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:18,206 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:18,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:18,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:18,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:18,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:18,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:18,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:18,687 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:18,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:18,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:18,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:18,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:18,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:18,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:18,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:18,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:18,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:18,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:18,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:18,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:18,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:18,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:18,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:18,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:42:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:18,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:18,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:18,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:42:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:18,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:18,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:18,790 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 18:42:18,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121878116] [2021-02-21 18:42:18,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:18,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:42:18,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101303449] [2021-02-21 18:42:18,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:42:18,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:18,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:42:18,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:42:18,794 INFO L87 Difference]: Start difference. First operand 255 states and 277 transitions. Second operand 4 states. [2021-02-21 18:42:19,536 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:20,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:20,599 INFO L93 Difference]: Finished difference Result 389 states and 438 transitions. [2021-02-21 18:42:20,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:42:20,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 18:42:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:20,613 INFO L225 Difference]: With dead ends: 389 [2021-02-21 18:42:20,613 INFO L226 Difference]: Without dead ends: 279 [2021-02-21 18:42:20,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:42:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-02-21 18:42:20,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 245. [2021-02-21 18:42:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2021-02-21 18:42:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 264 transitions. [2021-02-21 18:42:20,759 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 264 transitions. Word has length 148 [2021-02-21 18:42:20,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:20,760 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 264 transitions. [2021-02-21 18:42:20,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:42:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 264 transitions. [2021-02-21 18:42:20,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 18:42:20,763 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:20,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:42:20,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:42:20,764 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:20,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:20,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1206642817, now seen corresponding path program 1 times [2021-02-21 18:42:20,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:20,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285215433] [2021-02-21 18:42:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:20,768 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:20,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:20,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:20,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:20,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:20,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:20,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:20,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:20,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:42:20,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:20,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:21,179 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:21,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:21,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:21,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:21,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:42:21,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:21,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:21,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:21,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:21,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:21,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:21,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:21,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:21,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:21,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:21,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:42:21,331 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:42:21,334 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:42:21,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:21,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:21,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:21,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:42:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:21,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:21,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:21,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 18:42:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:21,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:21,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:21,444 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 18:42:21,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285215433] [2021-02-21 18:42:21,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:21,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:42:21,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812224664] [2021-02-21 18:42:21,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:42:21,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:21,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:42:21,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:42:21,447 INFO L87 Difference]: Start difference. First operand 245 states and 264 transitions. Second operand 9 states. [2021-02-21 18:42:22,167 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:22,637 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:42:23,000 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:42:23,369 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:23,746 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:24,130 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:25,695 INFO L93 Difference]: Finished difference Result 409 states and 463 transitions. [2021-02-21 18:42:25,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 18:42:25,695 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 18:42:25,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:25,700 INFO L225 Difference]: With dead ends: 409 [2021-02-21 18:42:25,701 INFO L226 Difference]: Without dead ends: 279 [2021-02-21 18:42:25,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:42:25,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-02-21 18:42:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 245. [2021-02-21 18:42:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2021-02-21 18:42:25,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 263 transitions. [2021-02-21 18:42:25,807 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 263 transitions. Word has length 157 [2021-02-21 18:42:25,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:25,808 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 263 transitions. [2021-02-21 18:42:25,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:42:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 263 transitions. [2021-02-21 18:42:25,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-21 18:42:25,811 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:25,811 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] [2021-02-21 18:42:25,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:42:25,811 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:25,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:25,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2129969252, now seen corresponding path program 1 times [2021-02-21 18:42:25,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:25,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728944149] [2021-02-21 18:42:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:25,816 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:25,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:25,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:25,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:25,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:25,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:25,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:25,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:25,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:25,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:25,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:25,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:25,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:26,220 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:26,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:26,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:26,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:26,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:26,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:26,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:26,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:26,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:26,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:26,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:26,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:26,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:26,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:26,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:26,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:26,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:26,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:42:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:26,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:26,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:26,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:26,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:26,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:26,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:26,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:26,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:26,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:26,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:26,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:42:26,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:26,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:26,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:26,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-21 18:42:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:26,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:26,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:26,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-21 18:42:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:26,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:26,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:26,372 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 18:42:26,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728944149] [2021-02-21 18:42:26,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:26,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 18:42:26,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94906245] [2021-02-21 18:42:26,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 18:42:26,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:26,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 18:42:26,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-21 18:42:26,375 INFO L87 Difference]: Start difference. First operand 245 states and 263 transitions. Second operand 6 states. [2021-02-21 18:42:26,982 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:28,608 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:29,419 INFO L93 Difference]: Finished difference Result 540 states and 618 transitions. [2021-02-21 18:42:29,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 18:42:29,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-21 18:42:29,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:29,426 INFO L225 Difference]: With dead ends: 540 [2021-02-21 18:42:29,427 INFO L226 Difference]: Without dead ends: 410 [2021-02-21 18:42:29,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:42:29,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-02-21 18:42:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 351. [2021-02-21 18:42:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2021-02-21 18:42:29,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 378 transitions. [2021-02-21 18:42:29,595 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 378 transitions. Word has length 170 [2021-02-21 18:42:29,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:29,596 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 378 transitions. [2021-02-21 18:42:29,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 18:42:29,596 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 378 transitions. [2021-02-21 18:42:29,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-02-21 18:42:29,598 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:29,599 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] [2021-02-21 18:42:29,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:42:29,599 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:29,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:29,600 INFO L82 PathProgramCache]: Analyzing trace with hash -711714552, now seen corresponding path program 1 times [2021-02-21 18:42:29,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:29,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764067351] [2021-02-21 18:42:29,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:29,604 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:29,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:29,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:29,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:29,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:29,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:29,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:29,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:29,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:29,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:29,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:29,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:29,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:29,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:29,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:30,052 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:30,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:30,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:30,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:30,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:30,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:30,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:30,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:30,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:30,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:30,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:30,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:30,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:42:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:30,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:30,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:30,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:30,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:30,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:30,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:42:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:30,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:30,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:42:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:30,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:30,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-02-21 18:42:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:30,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:30,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:30,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:30,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-21 18:42:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:30,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:30,246 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 18:42:30,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764067351] [2021-02-21 18:42:30,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:30,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:42:30,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765516113] [2021-02-21 18:42:30,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:42:30,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:30,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:42:30,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:42:30,248 INFO L87 Difference]: Start difference. First operand 351 states and 378 transitions. Second operand 9 states. [2021-02-21 18:42:30,868 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:32,545 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:32,932 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:33,306 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:33,685 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:34,035 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:34,377 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:34,723 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:35,210 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:36,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:36,473 INFO L93 Difference]: Finished difference Result 877 states and 1013 transitions. [2021-02-21 18:42:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:42:36,479 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 194 [2021-02-21 18:42:36,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:36,491 INFO L225 Difference]: With dead ends: 877 [2021-02-21 18:42:36,492 INFO L226 Difference]: Without dead ends: 641 [2021-02-21 18:42:36,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-21 18:42:36,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-02-21 18:42:36,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 550. [2021-02-21 18:42:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2021-02-21 18:42:36,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 599 transitions. [2021-02-21 18:42:36,717 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 599 transitions. Word has length 194 [2021-02-21 18:42:36,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:36,718 INFO L480 AbstractCegarLoop]: Abstraction has 550 states and 599 transitions. [2021-02-21 18:42:36,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:42:36,718 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 599 transitions. [2021-02-21 18:42:36,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-21 18:42:36,722 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:36,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:42:36,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:42:36,723 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:36,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:36,723 INFO L82 PathProgramCache]: Analyzing trace with hash 539368296, now seen corresponding path program 1 times [2021-02-21 18:42:36,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:36,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268266553] [2021-02-21 18:42:36,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:36,727 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:36,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:36,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:36,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:36,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:36,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:36,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:36,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:36,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:37,177 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:37,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:37,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:37,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:37,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:37,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:37,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:37,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:37,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:37,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:37,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:37,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:37,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:42:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:37,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:37,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:42:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:37,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:37,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:37,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:37,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:37,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:37,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:37,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:37,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:42:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:37,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:37,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:42:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:37,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:37,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-21 18:42:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:37,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:37,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-21 18:42:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:37,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:37,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:37,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:37,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:37,379 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 18:42:37,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268266553] [2021-02-21 18:42:37,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:37,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:42:37,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424309450] [2021-02-21 18:42:37,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:42:37,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:37,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:42:37,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:42:37,382 INFO L87 Difference]: Start difference. First operand 550 states and 599 transitions. Second operand 10 states. [2021-02-21 18:42:38,081 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:39,826 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:40,233 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:40,598 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:40,982 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:41,393 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:41,824 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:42,219 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:42,638 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:43,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:43,871 INFO L93 Difference]: Finished difference Result 707 states and 821 transitions. [2021-02-21 18:42:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 18:42:43,872 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2021-02-21 18:42:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:43,878 INFO L225 Difference]: With dead ends: 707 [2021-02-21 18:42:43,878 INFO L226 Difference]: Without dead ends: 704 [2021-02-21 18:42:43,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-21 18:42:43,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-02-21 18:42:44,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 550. [2021-02-21 18:42:44,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2021-02-21 18:42:44,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 598 transitions. [2021-02-21 18:42:44,164 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 598 transitions. Word has length 199 [2021-02-21 18:42:44,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:44,164 INFO L480 AbstractCegarLoop]: Abstraction has 550 states and 598 transitions. [2021-02-21 18:42:44,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:42:44,165 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 598 transitions. [2021-02-21 18:42:44,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-21 18:42:44,171 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:44,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:42:44,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:42:44,171 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:44,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:44,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1624528255, now seen corresponding path program 1 times [2021-02-21 18:42:44,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:44,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736826347] [2021-02-21 18:42:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:44,176 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,549 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:44,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:42:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:42:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:44,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:44,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:42:44,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:42:44,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:42:44,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:42:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:42:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-21 18:42:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:42:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,768 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 18:42:44,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736826347] [2021-02-21 18:42:44,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:44,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:42:44,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975985430] [2021-02-21 18:42:44,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:42:44,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:44,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:42:44,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:42:44,771 INFO L87 Difference]: Start difference. First operand 550 states and 598 transitions. Second operand 10 states. [2021-02-21 18:42:46,240 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:46,631 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:42:47,060 WARN L202 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:42:47,462 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:47,870 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:42:48,258 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:49,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:49,707 INFO L93 Difference]: Finished difference Result 1149 states and 1325 transitions. [2021-02-21 18:42:49,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:42:49,708 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2021-02-21 18:42:49,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:49,715 INFO L225 Difference]: With dead ends: 1149 [2021-02-21 18:42:49,715 INFO L226 Difference]: Without dead ends: 714 [2021-02-21 18:42:49,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-21 18:42:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-02-21 18:42:49,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 566. [2021-02-21 18:42:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2021-02-21 18:42:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 614 transitions. [2021-02-21 18:42:49,943 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 614 transitions. Word has length 200 [2021-02-21 18:42:49,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:49,943 INFO L480 AbstractCegarLoop]: Abstraction has 566 states and 614 transitions. [2021-02-21 18:42:49,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:42:49,944 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 614 transitions. [2021-02-21 18:42:49,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-21 18:42:49,947 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:49,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:42:49,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 18:42:49,948 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:49,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:49,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1696568865, now seen corresponding path program 1 times [2021-02-21 18:42:49,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:49,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768835886] [2021-02-21 18:42:49,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:49,952 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:50,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:50,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:50,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,349 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:50,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:50,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:50,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:50,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:50,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:42:50,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:42:50,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:50,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:42:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:50,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:42:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:50,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:50,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:50,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:50,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:50,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:42:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:50,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:50,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:50,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:42:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:50,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-21 18:42:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:50,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:42:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:50,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:50,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:50,605 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 18:42:50,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768835886] [2021-02-21 18:42:50,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:50,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 18:42:50,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288770961] [2021-02-21 18:42:50,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 18:42:50,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:50,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 18:42:50,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-21 18:42:50,608 INFO L87 Difference]: Start difference. First operand 566 states and 614 transitions. Second operand 13 states. [2021-02-21 18:42:51,373 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:51,779 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:42:52,226 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:52,632 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:42:53,007 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:54,009 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:54,392 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:42:54,787 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:55,185 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:42:55,563 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:57,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:57,244 INFO L93 Difference]: Finished difference Result 1187 states and 1379 transitions. [2021-02-21 18:42:57,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 18:42:57,245 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2021-02-21 18:42:57,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:57,252 INFO L225 Difference]: With dead ends: 1187 [2021-02-21 18:42:57,252 INFO L226 Difference]: Without dead ends: 736 [2021-02-21 18:42:57,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-21 18:42:57,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-02-21 18:42:57,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 578. [2021-02-21 18:42:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2021-02-21 18:42:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 626 transitions. [2021-02-21 18:42:57,570 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 626 transitions. Word has length 200 [2021-02-21 18:42:57,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:57,571 INFO L480 AbstractCegarLoop]: Abstraction has 578 states and 626 transitions. [2021-02-21 18:42:57,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 18:42:57,571 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 626 transitions. [2021-02-21 18:42:57,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-21 18:42:57,574 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:57,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:42:57,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 18:42:57,575 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:57,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:57,575 INFO L82 PathProgramCache]: Analyzing trace with hash 56274884, now seen corresponding path program 1 times [2021-02-21 18:42:57,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:57,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547198863] [2021-02-21 18:42:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:57,579 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:57,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:57,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:57,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:57,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:57,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:57,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:57,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:57,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:57,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:57,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:42:57,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:57,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:57,975 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:57,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:58,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:58,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:42:58,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:58,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:58,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:58,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:58,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:58,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:58,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:58,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:58,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:42:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:58,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:42:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:58,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:58,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:58,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:58,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:58,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:42:58,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:58,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:58,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:42:58,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:42:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:58,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:58,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:42:58,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:42:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:58,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:58,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-21 18:42:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:58,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:58,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:42:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:58,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:58,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:58,180 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 18:42:58,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547198863] [2021-02-21 18:42:58,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:58,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 18:42:58,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672462672] [2021-02-21 18:42:58,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 18:42:58,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:58,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 18:42:58,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 18:42:58,182 INFO L87 Difference]: Start difference. First operand 578 states and 626 transitions. Second operand 7 states. [2021-02-21 18:42:58,852 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:59,579 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:02,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:02,475 INFO L93 Difference]: Finished difference Result 1632 states and 1943 transitions. [2021-02-21 18:43:02,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:43:02,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2021-02-21 18:43:02,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:02,484 INFO L225 Difference]: With dead ends: 1632 [2021-02-21 18:43:02,485 INFO L226 Difference]: Without dead ends: 1169 [2021-02-21 18:43:02,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:43:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2021-02-21 18:43:02,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 996. [2021-02-21 18:43:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2021-02-21 18:43:02,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1118 transitions. [2021-02-21 18:43:02,916 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1118 transitions. Word has length 200 [2021-02-21 18:43:02,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:02,916 INFO L480 AbstractCegarLoop]: Abstraction has 996 states and 1118 transitions. [2021-02-21 18:43:02,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 18:43:02,917 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1118 transitions. [2021-02-21 18:43:02,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-21 18:43:02,919 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:02,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:43:02,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 18:43:02,920 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:02,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:02,920 INFO L82 PathProgramCache]: Analyzing trace with hash -726164035, now seen corresponding path program 1 times [2021-02-21 18:43:02,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:02,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352111429] [2021-02-21 18:43:02,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:02,923 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:43:02,990 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:43:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:43:03,053 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:43:03,299 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:43:03,299 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:43:03,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 18:43:03,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:43:03 BoogieIcfgContainer [2021-02-21 18:43:03,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:43:03,328 INFO L168 Benchmark]: Toolchain (without parser) took 50379.69 ms. Allocated memory was 155.2 MB in the beginning and 610.3 MB in the end (delta: 455.1 MB). Free memory was 110.8 MB in the beginning and 331.0 MB in the end (delta: -220.2 MB). Peak memory consumption was 235.6 MB. Max. memory is 8.0 GB. [2021-02-21 18:43:03,328 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:43:03,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.48 ms. Allocated memory is still 155.2 MB. Free memory was 109.6 MB in the beginning and 131.4 MB in the end (delta: -21.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. [2021-02-21 18:43:03,329 INFO L168 Benchmark]: Boogie Preprocessor took 134.34 ms. Allocated memory is still 155.2 MB. Free memory was 131.4 MB in the beginning and 127.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:43:03,329 INFO L168 Benchmark]: RCFGBuilder took 1295.19 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 127.6 MB in the beginning and 106.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 8.0 GB. [2021-02-21 18:43:03,329 INFO L168 Benchmark]: TraceAbstraction took 48251.10 ms. Allocated memory was 186.6 MB in the beginning and 610.3 MB in the end (delta: 423.6 MB). Free memory was 105.6 MB in the beginning and 331.0 MB in the end (delta: -225.4 MB). Peak memory consumption was 198.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:43:03,330 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 674.48 ms. Allocated memory is still 155.2 MB. Free memory was 109.6 MB in the beginning and 131.4 MB in the end (delta: -21.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 134.34 ms. Allocated memory is still 155.2 MB. Free memory was 131.4 MB in the beginning and 127.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1295.19 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 127.6 MB in the beginning and 106.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 48251.10 ms. Allocated memory was 186.6 MB in the beginning and 610.3 MB in the end (delta: 423.6 MB). Free memory was 105.6 MB in the beginning and 331.0 MB in the end (delta: -225.4 MB). Peak memory consumption was 198.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 545]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L408] int cleanupTimeShifts = 4; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L489] int retValue_acc ; [L490] int tmp ; [L494] FCALL select_helpers() [L495] FCALL select_features() [L496] CALL, EXPR valid_product() [L576] int retValue_acc ; [L579] retValue_acc = 1 [L580] return (retValue_acc); [L496] RET, EXPR valid_product() [L496] tmp = valid_product() [L498] COND TRUE \read(tmp) [L500] FCALL setup() [L501] CALL runTest() [L480] CALL test() [L769] int splverifierCounter ; [L770] int tmp ; [L771] int tmp___0 ; [L772] int tmp___1 ; [L773] int tmp___2 ; [L776] splverifierCounter = 0 [L778] COND TRUE 1 [L780] COND TRUE splverifierCounter < 4 [L786] tmp = __VERIFIER_nondet_int() [L788] COND TRUE \read(tmp) [L790] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L790] RET waterRise() [L796] tmp___0 = __VERIFIER_nondet_int() [L798] COND TRUE \read(tmp___0) [L800] CALL changeMethaneLevel() [L864] COND FALSE !(\read(methaneLevelCritical)) [L867] methaneLevelCritical = 1 [L800] RET changeMethaneLevel() [L806] tmp___2 = __VERIFIER_nondet_int() [L808] COND TRUE \read(tmp___2) [L821] CALL timeShift() [L597] COND FALSE !(\read(pumpRunning)) [L604] COND TRUE \read(systemActive) [L606] CALL processEnvironment() [L652] int tmp ; [L655] COND FALSE !(\read(pumpRunning)) [L670] CALL processEnvironment__wrappee__highWaterSensor() [L626] int tmp ; [L629] COND TRUE ! pumpRunning [L631] CALL, EXPR isHighWaterLevel() [L749] int retValue_acc ; [L750] int tmp ; [L751] int tmp___0 ; [L755] CALL, EXPR isHighWaterSensorDry() [L914] int retValue_acc ; [L917] COND FALSE !(waterLevel < 2) [L921] retValue_acc = 0 [L922] return (retValue_acc); [L755] RET, EXPR isHighWaterSensorDry() [L755] tmp = isHighWaterSensorDry() [L757] COND FALSE !(\read(tmp)) [L760] tmp___0 = 1 [L762] retValue_acc = tmp___0 [L763] return (retValue_acc); [L631] RET, EXPR isHighWaterLevel() [L631] tmp = isHighWaterLevel() [L633] COND TRUE \read(tmp) [L635] CALL activatePump() [L680] pumpRunning = 1 [L635] RET activatePump() [L670] RET processEnvironment__wrappee__highWaterSensor() [L606] RET processEnvironment() [L612] CALL __utac_acc__Specification1_spec__1() [L516] int tmp ; [L517] int tmp___0 ; [L521] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L521] RET, EXPR isMethaneLevelCritical() [L521] tmp = isMethaneLevelCritical() [L523] COND TRUE \read(tmp) [L525] CALL, EXPR isPumpRunning() [L704] int retValue_acc ; [L707] retValue_acc = pumpRunning [L708] return (retValue_acc); [L525] RET, EXPR isPumpRunning() [L525] tmp___0 = isPumpRunning() [L527] COND TRUE \read(tmp___0) [L529] CALL __automaton_fail() [L545] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 627 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 39.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2172 SDtfs, 3625 SDslu, 3943 SDs, 0 SdLazy, 7525 SolverSat, 1056 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 230 SyntacticMatches, 4 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 19.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=996occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 892 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...