/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product07.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:01:31,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:01:31,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:01:31,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:01:31,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:01:31,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:01:31,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:01:31,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:01:31,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:01:31,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:01:31,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:01:31,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:01:31,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:01:31,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:01:31,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:01:31,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:01:31,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:01:31,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:01:31,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:01:31,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:01:31,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:01:31,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:01:31,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:01:31,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:01:31,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:01:31,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:01:31,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:01:31,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:01:31,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:01:31,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:01:31,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:01:31,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:01:31,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:01:31,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:01:31,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:01:31,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:01:31,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:01:31,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:01:31,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:01:31,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:01:31,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:01:31,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:01:31,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:01:31,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:01:31,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:01:31,549 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:01:31,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:01:31,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:01:31,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:01:31,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:01:31,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:01:31,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:01:31,551 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:01:31,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:01:31,553 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:01:31,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:01:31,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:01:31,554 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:01:31,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:01:31,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:01:31,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:01:31,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:01:31,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:01:31,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:01:31,555 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:01:31,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:01:31,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:01:31,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:01:31,988 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:01:31,989 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:01:31,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product07.cil.c [2021-02-21 19:01:32,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bedf806f/b2cc4237f40b45d0965c16469bac181d/FLAG1cf038735 [2021-02-21 19:01:32,648 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:01:32,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product07.cil.c [2021-02-21 19:01:32,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bedf806f/b2cc4237f40b45d0965c16469bac181d/FLAG1cf038735 [2021-02-21 19:01:32,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bedf806f/b2cc4237f40b45d0965c16469bac181d [2021-02-21 19:01:32,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:01:32,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:01:32,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:01:32,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:01:32,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:01:32,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:01:32" (1/1) ... [2021-02-21 19:01:32,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11067a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:32, skipping insertion in model container [2021-02-21 19:01:32,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:01:32" (1/1) ... [2021-02-21 19:01:33,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:01:33,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:01:33,243 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product07.cil.c[3026,3039] [2021-02-21 19:01:33,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:01:33,362 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:01:33,413 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product07.cil.c[3026,3039] [2021-02-21 19:01:33,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:01:33,564 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:01:33,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:33 WrapperNode [2021-02-21 19:01:33,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:01:33,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:01:33,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:01:33,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:01:33,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:33" (1/1) ... [2021-02-21 19:01:33,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:33" (1/1) ... [2021-02-21 19:01:33,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:33" (1/1) ... [2021-02-21 19:01:33,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:33" (1/1) ... [2021-02-21 19:01:33,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:33" (1/1) ... [2021-02-21 19:01:33,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:33" (1/1) ... [2021-02-21 19:01:33,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:33" (1/1) ... [2021-02-21 19:01:33,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:01:33,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:01:33,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:01:33,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:01:33,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:01:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:01:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:01:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:01:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:01:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:01:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:01:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:01:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:01:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:01:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:01:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:01:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:01:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:01:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:01:33,784 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:01:33,785 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:01:33,785 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:01:33,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:01:33,786 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:01:33,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:01:33,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:01:33,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:01:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:01:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:01:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:01:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:01:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:01:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:01:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:01:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:01:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:01:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:01:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:01:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:01:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:01:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:01:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:01:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:01:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:01:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:01:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:01:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:01:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:01:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:01:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:01:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:01:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:01:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:01:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:01:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:01:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:01:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:01:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:01:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:01:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:01:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:01:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:01:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:01:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:01:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:01:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:01:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:01:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:01:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:01:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:01:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:01:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:01:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:01:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:01:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:01:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:01:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:01:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:01:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:01:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:01:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:01:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:01:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:01:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:01:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:01:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:01:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:01:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:01:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:01:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:01:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:01:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:01:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:01:35,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:01:35,070 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:01:35,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:01:35 BoogieIcfgContainer [2021-02-21 19:01:35,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:01:35,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:01:35,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:01:35,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:01:35,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:01:32" (1/3) ... [2021-02-21 19:01:35,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463365df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:01:35, skipping insertion in model container [2021-02-21 19:01:35,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:33" (2/3) ... [2021-02-21 19:01:35,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463365df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:01:35, skipping insertion in model container [2021-02-21 19:01:35,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:01:35" (3/3) ... [2021-02-21 19:01:35,082 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product07.cil.c [2021-02-21 19:01:35,089 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:01:35,095 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:01:35,114 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:01:35,134 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:01:35,134 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:01:35,134 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:01:35,134 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:01:35,134 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:01:35,135 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:01:35,135 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:01:35,135 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:01:35,158 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states. [2021-02-21 19:01:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:01:35,178 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:35,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:01:35,180 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:35,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:35,187 INFO L82 PathProgramCache]: Analyzing trace with hash -667264421, now seen corresponding path program 1 times [2021-02-21 19:01:35,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:35,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145505692] [2021-02-21 19:01:35,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:35,276 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:35,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:35,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:35,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:35,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,021 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:36,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:01:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:01:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:01:36,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145505692] [2021-02-21 19:01:36,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:36,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:01:36,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664464384] [2021-02-21 19:01:36,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:01:36,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:36,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:01:36,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:01:36,236 INFO L87 Difference]: Start difference. First operand 281 states. Second operand 3 states. [2021-02-21 19:01:37,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:37,859 INFO L93 Difference]: Finished difference Result 421 states and 504 transitions. [2021-02-21 19:01:37,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:01:37,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:01:37,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:37,878 INFO L225 Difference]: With dead ends: 421 [2021-02-21 19:01:37,878 INFO L226 Difference]: Without dead ends: 270 [2021-02-21 19:01:37,883 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 19:01:37,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-02-21 19:01:38,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 229. [2021-02-21 19:01:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-21 19:01:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 247 transitions. [2021-02-21 19:01:38,044 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 247 transitions. Word has length 147 [2021-02-21 19:01:38,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:38,046 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 247 transitions. [2021-02-21 19:01:38,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:01:38,046 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 247 transitions. [2021-02-21 19:01:38,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:01:38,053 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:38,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:01:38,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:01:38,054 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:38,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:38,055 INFO L82 PathProgramCache]: Analyzing trace with hash -2081162594, now seen corresponding path program 1 times [2021-02-21 19:01:38,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:38,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332452895] [2021-02-21 19:01:38,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:38,061 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:38,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:38,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:38,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:38,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:38,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:38,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:38,495 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:38,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:38,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:38,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:38,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:38,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:38,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:38,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:38,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:38,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:38,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:38,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:38,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:38,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:38,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:38,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:01:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:38,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:38,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:38,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:01:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:38,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:38,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:01:38,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332452895] [2021-02-21 19:01:38,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:38,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:01:38,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076226969] [2021-02-21 19:01:38,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:01:38,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:38,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:01:38,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:01:38,628 INFO L87 Difference]: Start difference. First operand 229 states and 247 transitions. Second operand 4 states. [2021-02-21 19:01:39,374 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:01:40,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:40,234 INFO L93 Difference]: Finished difference Result 331 states and 370 transitions. [2021-02-21 19:01:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:01:40,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:01:40,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:40,239 INFO L225 Difference]: With dead ends: 331 [2021-02-21 19:01:40,240 INFO L226 Difference]: Without dead ends: 253 [2021-02-21 19:01:40,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:01:40,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-02-21 19:01:40,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 219. [2021-02-21 19:01:40,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-21 19:01:40,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2021-02-21 19:01:40,326 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 148 [2021-02-21 19:01:40,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:40,327 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2021-02-21 19:01:40,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:01:40,327 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2021-02-21 19:01:40,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:01:40,329 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:40,330 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 19:01:40,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:01:40,330 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:40,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:40,331 INFO L82 PathProgramCache]: Analyzing trace with hash 914511726, now seen corresponding path program 1 times [2021-02-21 19:01:40,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:40,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211892872] [2021-02-21 19:01:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:40,335 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:40,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:40,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:40,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:40,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:40,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:40,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:40,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:40,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:40,830 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:40,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:40,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:40,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:01:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:40,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:40,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:40,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:40,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:40,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:40,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:01:40,960 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:01:40,961 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:01:40,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:40,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:40,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:01:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:40,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:40,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:01:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:40,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:40,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:01:41,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211892872] [2021-02-21 19:01:41,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:41,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:01:41,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471683386] [2021-02-21 19:01:41,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:01:41,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:41,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:01:41,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:01:41,033 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand 9 states. [2021-02-21 19:01:41,692 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:42,175 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:01:42,555 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:01:42,968 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:43,371 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:43,759 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:44,885 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:01:46,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:46,750 INFO L93 Difference]: Finished difference Result 554 states and 637 transitions. [2021-02-21 19:01:46,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:01:46,751 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:01:46,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:46,761 INFO L225 Difference]: With dead ends: 554 [2021-02-21 19:01:46,761 INFO L226 Difference]: Without dead ends: 450 [2021-02-21 19:01:46,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:01:46,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-02-21 19:01:46,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 387. [2021-02-21 19:01:46,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2021-02-21 19:01:46,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 431 transitions. [2021-02-21 19:01:46,965 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 431 transitions. Word has length 157 [2021-02-21 19:01:46,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:46,965 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 431 transitions. [2021-02-21 19:01:46,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:01:46,966 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 431 transitions. [2021-02-21 19:01:46,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-21 19:01:46,968 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:46,969 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] [2021-02-21 19:01:46,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:01:46,969 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:46,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:46,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1215287233, now seen corresponding path program 1 times [2021-02-21 19:01:46,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:46,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108022501] [2021-02-21 19:01:46,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:46,974 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:47,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:47,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:47,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:47,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:47,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:47,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:47,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:47,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:47,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:47,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:47,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:47,389 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:47,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:47,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:47,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:01:47,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:47,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:47,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:47,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:47,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:47,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:47,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:01:47,490 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:01:47,492 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:01:47,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:47,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:47,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 19:01:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:47,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:01:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:47,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:47,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-21 19:01:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:47,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:47,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:47,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:47,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 19:01:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:47,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:47,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:01:47,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108022501] [2021-02-21 19:01:47,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:47,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:01:47,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918592394] [2021-02-21 19:01:47,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:01:47,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:47,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:01:47,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:01:47,658 INFO L87 Difference]: Start difference. First operand 387 states and 431 transitions. Second operand 14 states. [2021-02-21 19:01:48,327 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:48,845 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:01:49,264 WARN L202 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:01:49,681 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:50,089 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:50,478 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:51,230 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:01:52,607 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:53,029 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:53,532 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:53,991 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:01:54,390 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:54,794 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:01:55,202 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:01:55,603 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:55,998 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:56,457 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:56,984 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:01:57,405 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:57,867 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:59,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:59,505 INFO L93 Difference]: Finished difference Result 1413 states and 1806 transitions. [2021-02-21 19:01:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:01:59,506 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2021-02-21 19:01:59,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:59,523 INFO L225 Difference]: With dead ends: 1413 [2021-02-21 19:01:59,523 INFO L226 Difference]: Without dead ends: 1141 [2021-02-21 19:01:59,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:01:59,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2021-02-21 19:02:00,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 868. [2021-02-21 19:02:00,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2021-02-21 19:02:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1004 transitions. [2021-02-21 19:02:00,043 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1004 transitions. Word has length 165 [2021-02-21 19:02:00,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:00,044 INFO L480 AbstractCegarLoop]: Abstraction has 868 states and 1004 transitions. [2021-02-21 19:02:00,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:02:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1004 transitions. [2021-02-21 19:02:00,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-21 19:02:00,048 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:00,049 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 19:02:00,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:02:00,049 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:00,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:00,050 INFO L82 PathProgramCache]: Analyzing trace with hash -2024195557, now seen corresponding path program 1 times [2021-02-21 19:02:00,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:00,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005889976] [2021-02-21 19:02:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:00,054 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:00,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:00,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:00,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:00,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:00,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:00,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:00,457 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:00,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:00,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:00,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:00,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:00,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:00,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:00,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:00,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:00,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:00,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:00,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:00,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-21 19:02:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:00,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:00,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 19:02:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:00,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:00,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:02:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:00,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:00,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-21 19:02:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:00,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:00,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-21 19:02:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:00,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:00,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:02:00,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005889976] [2021-02-21 19:02:00,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:00,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:02:00,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335771604] [2021-02-21 19:02:00,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:02:00,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:00,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:02:00,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:02:00,648 INFO L87 Difference]: Start difference. First operand 868 states and 1004 transitions. Second operand 6 states. [2021-02-21 19:02:01,457 WARN L202 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:02:02,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:02:02,492 INFO L93 Difference]: Finished difference Result 1430 states and 1706 transitions. [2021-02-21 19:02:02,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 19:02:02,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-21 19:02:02,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:02:02,497 INFO L225 Difference]: With dead ends: 1430 [2021-02-21 19:02:02,498 INFO L226 Difference]: Without dead ends: 677 [2021-02-21 19:02:02,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:02:02,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-02-21 19:02:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 643. [2021-02-21 19:02:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-02-21 19:02:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 702 transitions. [2021-02-21 19:02:02,738 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 702 transitions. Word has length 170 [2021-02-21 19:02:02,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:02,739 INFO L480 AbstractCegarLoop]: Abstraction has 643 states and 702 transitions. [2021-02-21 19:02:02,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:02:02,739 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 702 transitions. [2021-02-21 19:02:02,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-21 19:02:02,743 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:02,744 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:02:02,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:02:02,744 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:02,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:02,745 INFO L82 PathProgramCache]: Analyzing trace with hash -645447655, now seen corresponding path program 1 times [2021-02-21 19:02:02,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:02,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107940637] [2021-02-21 19:02:02,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY