/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:21:27,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:21:27,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:21:27,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:21:27,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:21:27,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:21:27,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:21:27,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:21:27,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:21:27,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:21:27,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:21:27,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:21:27,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:21:27,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:21:27,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:21:27,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:21:27,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:21:27,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:21:27,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:21:27,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:21:27,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:21:27,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:21:27,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:21:27,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:21:27,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 02:21:27,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 02:21:27,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 02:21:27,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 02:21:27,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 02:21:27,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 02:21:27,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 02:21:27,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 02:21:27,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 02:21:27,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 02:21:27,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 02:21:27,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 02:21:27,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 02:21:27,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 02:21:27,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:21:27,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:21:27,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:21:27,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:21:27,772 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:21:27,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:21:27,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:21:27,778 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:21:27,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:21:27,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:21:27,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:21:27,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:21:27,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:21:27,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:21:27,781 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:21:27,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:21:27,782 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:21:27,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:21:27,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:21:27,782 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:21:27,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:21:27,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:21:27,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:21:27,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:21:27,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:21:27,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:21:27,785 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:21:27,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:21:28,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:21:28,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:21:28,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:21:28,203 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:21:28,204 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:21:28,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-02-22 02:21:28,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fb0382e5/8d3350dbcb974efda6da017b8a357259/FLAG40efb66c8 [2021-02-22 02:21:28,844 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:21:28,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-02-22 02:21:28,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fb0382e5/8d3350dbcb974efda6da017b8a357259/FLAG40efb66c8 [2021-02-22 02:21:29,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fb0382e5/8d3350dbcb974efda6da017b8a357259 [2021-02-22 02:21:29,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:21:29,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:21:29,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:21:29,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:21:29,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:21:29,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:21:29" (1/1) ... [2021-02-22 02:21:29,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9e1358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:29, skipping insertion in model container [2021-02-22 02:21:29,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:21:29" (1/1) ... [2021-02-22 02:21:29,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:21:29,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:21:29,426 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-02-22 02:21:29,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:21:29,474 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:21:29,490 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-02-22 02:21:29,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:21:29,536 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:21:29,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:29 WrapperNode [2021-02-22 02:21:29,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:21:29,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:21:29,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:21:29,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:21:29,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:29" (1/1) ... [2021-02-22 02:21:29,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:29" (1/1) ... [2021-02-22 02:21:29,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:29" (1/1) ... [2021-02-22 02:21:29,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:29" (1/1) ... [2021-02-22 02:21:29,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:29" (1/1) ... [2021-02-22 02:21:29,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:29" (1/1) ... [2021-02-22 02:21:29,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:29" (1/1) ... [2021-02-22 02:21:29,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:21:29,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:21:29,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:21:29,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:21:29,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:29" (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 [2021-02-22 02:21:29,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:21:29,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:21:29,753 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:21:29,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:21:29,754 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2021-02-22 02:21:29,754 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2021-02-22 02:21:29,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:21:29,755 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:21:29,755 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:21:29,756 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 02:21:29,757 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 02:21:29,757 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:21:29,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:21:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:21:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-02-22 02:21:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-02-22 02:21:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-02-22 02:21:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-02-22 02:21:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2021-02-22 02:21:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-02-22 02:21:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-02-22 02:21:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-02-22 02:21:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-02-22 02:21:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-02-22 02:21:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-02-22 02:21:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2021-02-22 02:21:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2021-02-22 02:21:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2021-02-22 02:21:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2021-02-22 02:21:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2021-02-22 02:21:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2021-02-22 02:21:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2021-02-22 02:21:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2021-02-22 02:21:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2021-02-22 02:21:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2021-02-22 02:21:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2021-02-22 02:21:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2021-02-22 02:21:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2021-02-22 02:21:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2021-02-22 02:21:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2021-02-22 02:21:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:21:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:21:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:21:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:21:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:21:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:21:29,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:21:30,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:21:30,489 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-22 02:21:30,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:21:30 BoogieIcfgContainer [2021-02-22 02:21:30,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:21:30,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:21:30,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:21:30,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:21:30,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:21:29" (1/3) ... [2021-02-22 02:21:30,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15352b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:21:30, skipping insertion in model container [2021-02-22 02:21:30,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:29" (2/3) ... [2021-02-22 02:21:30,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15352b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:21:30, skipping insertion in model container [2021-02-22 02:21:30,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:21:30" (3/3) ... [2021-02-22 02:21:30,501 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-02-22 02:21:30,508 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:21:30,514 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:21:30,534 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:21:30,559 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:21:30,560 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:21:30,560 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:21:30,560 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:21:30,560 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:21:30,560 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:21:30,560 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:21:30,561 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:21:30,580 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2021-02-22 02:21:30,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-22 02:21:30,593 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:30,593 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] [2021-02-22 02:21:30,594 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:30,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:30,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1777091402, now seen corresponding path program 1 times [2021-02-22 02:21:30,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:30,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309458550] [2021-02-22 02:21:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:30,708 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:30,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:30,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:30,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:30,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:31,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:31,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:31,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:31,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-22 02:21:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:31,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:31,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:31,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309458550] [2021-02-22 02:21:31,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:31,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:21:31,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684649487] [2021-02-22 02:21:31,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:21:31,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:31,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:21:31,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:21:31,102 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2021-02-22 02:21:31,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:31,398 INFO L93 Difference]: Finished difference Result 232 states and 262 transitions. [2021-02-22 02:21:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:21:31,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2021-02-22 02:21:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:31,409 INFO L225 Difference]: With dead ends: 232 [2021-02-22 02:21:31,409 INFO L226 Difference]: Without dead ends: 106 [2021-02-22 02:21:31,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:21:31,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-22 02:21:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-02-22 02:21:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-02-22 02:21:31,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2021-02-22 02:21:31,468 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 52 [2021-02-22 02:21:31,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:31,468 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2021-02-22 02:21:31,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:21:31,469 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2021-02-22 02:21:31,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-22 02:21:31,472 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:31,472 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] [2021-02-22 02:21:31,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:21:31,473 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:31,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:31,473 INFO L82 PathProgramCache]: Analyzing trace with hash 57162465, now seen corresponding path program 1 times [2021-02-22 02:21:31,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:31,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966101201] [2021-02-22 02:21:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:31,477 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:31,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:31,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:31,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:31,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:31,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:31,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:31,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:31,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:31,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:31,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-22 02:21:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:31,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:31,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:31,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966101201] [2021-02-22 02:21:31,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:31,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:21:31,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404365745] [2021-02-22 02:21:31,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:21:31,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:31,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:21:31,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:21:31,593 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand 4 states. [2021-02-22 02:21:31,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:31,843 INFO L93 Difference]: Finished difference Result 193 states and 212 transitions. [2021-02-22 02:21:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:21:31,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2021-02-22 02:21:31,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:31,846 INFO L225 Difference]: With dead ends: 193 [2021-02-22 02:21:31,846 INFO L226 Difference]: Without dead ends: 107 [2021-02-22 02:21:31,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:21:31,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-02-22 02:21:31,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-02-22 02:21:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-02-22 02:21:31,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 116 transitions. [2021-02-22 02:21:31,877 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 116 transitions. Word has length 64 [2021-02-22 02:21:31,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:31,878 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 116 transitions. [2021-02-22 02:21:31,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:21:31,878 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 116 transitions. [2021-02-22 02:21:31,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-22 02:21:31,880 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:31,881 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] [2021-02-22 02:21:31,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:21:31,881 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:31,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:31,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1846540770, now seen corresponding path program 1 times [2021-02-22 02:21:31,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:31,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859410826] [2021-02-22 02:21:31,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:31,886 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:32,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:32,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:32,054 WARN L141 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-02-22 02:21:32,056 WARN L147 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size 9 [2021-02-22 02:21:32,066 WARN L141 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-02-22 02:21:32,069 WARN L147 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size 15 [2021-02-22 02:21:32,096 WARN L141 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-02-22 02:21:32,097 WARN L147 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size 13 [2021-02-22 02:21:32,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:21:32,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:21:32,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:32,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:32,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:32,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-22 02:21:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:32,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:32,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859410826] [2021-02-22 02:21:32,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:32,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 02:21:32,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592804062] [2021-02-22 02:21:32,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 02:21:32,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:32,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 02:21:32,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-22 02:21:32,203 INFO L87 Difference]: Start difference. First operand 107 states and 116 transitions. Second operand 9 states. [2021-02-22 02:21:32,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:32,671 INFO L93 Difference]: Finished difference Result 212 states and 236 transitions. [2021-02-22 02:21:32,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 02:21:32,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2021-02-22 02:21:32,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:32,682 INFO L225 Difference]: With dead ends: 212 [2021-02-22 02:21:32,682 INFO L226 Difference]: Without dead ends: 210 [2021-02-22 02:21:32,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-02-22 02:21:32,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-02-22 02:21:32,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 167. [2021-02-22 02:21:32,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2021-02-22 02:21:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 187 transitions. [2021-02-22 02:21:32,746 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 187 transitions. Word has length 66 [2021-02-22 02:21:32,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:32,748 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 187 transitions. [2021-02-22 02:21:32,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 02:21:32,748 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 187 transitions. [2021-02-22 02:21:32,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-02-22 02:21:32,756 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:32,757 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] [2021-02-22 02:21:32,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:21:32,760 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:32,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:32,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1494007365, now seen corresponding path program 1 times [2021-02-22 02:21:32,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:32,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437847535] [2021-02-22 02:21:32,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:32,765 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:32,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:32,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:32,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:21:32,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:21:32,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:21:32,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:21:32,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:21:32,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:21:32,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:32,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:21:33,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:33,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:21:33,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:33,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:33,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:33,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:33,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:33,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-22 02:21:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:33,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:33,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:33,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:33,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437847535] [2021-02-22 02:21:33,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:33,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-22 02:21:33,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988036603] [2021-02-22 02:21:33,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-22 02:21:33,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:33,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-22 02:21:33,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-02-22 02:21:33,091 INFO L87 Difference]: Start difference. First operand 167 states and 187 transitions. Second operand 12 states. [2021-02-22 02:21:33,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:33,862 INFO L93 Difference]: Finished difference Result 452 states and 513 transitions. [2021-02-22 02:21:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 02:21:33,863 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2021-02-22 02:21:33,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:33,867 INFO L225 Difference]: With dead ends: 452 [2021-02-22 02:21:33,867 INFO L226 Difference]: Without dead ends: 362 [2021-02-22 02:21:33,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-02-22 02:21:33,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-02-22 02:21:33,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 207. [2021-02-22 02:21:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2021-02-22 02:21:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 235 transitions. [2021-02-22 02:21:33,909 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 235 transitions. Word has length 69 [2021-02-22 02:21:33,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:33,910 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 235 transitions. [2021-02-22 02:21:33,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-22 02:21:33,910 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 235 transitions. [2021-02-22 02:21:33,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-02-22 02:21:33,912 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:33,912 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] [2021-02-22 02:21:33,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 02:21:33,913 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:33,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:33,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1869971361, now seen corresponding path program 1 times [2021-02-22 02:21:33,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:33,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117000126] [2021-02-22 02:21:33,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:33,916 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:33,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:33,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:33,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:33,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-22 02:21:33,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:33,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:33,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:33,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:33,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:33,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-22 02:21:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:33,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:33,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:33,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117000126] [2021-02-22 02:21:33,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:33,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:21:33,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78535150] [2021-02-22 02:21:33,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:21:33,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:33,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:21:33,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:21:33,988 INFO L87 Difference]: Start difference. First operand 207 states and 235 transitions. Second operand 4 states. [2021-02-22 02:21:34,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:34,178 INFO L93 Difference]: Finished difference Result 297 states and 336 transitions. [2021-02-22 02:21:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:21:34,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2021-02-22 02:21:34,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:34,183 INFO L225 Difference]: With dead ends: 297 [2021-02-22 02:21:34,183 INFO L226 Difference]: Without dead ends: 209 [2021-02-22 02:21:34,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:21:34,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-02-22 02:21:34,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-02-22 02:21:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2021-02-22 02:21:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 236 transitions. [2021-02-22 02:21:34,211 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 236 transitions. Word has length 69 [2021-02-22 02:21:34,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:34,212 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 236 transitions. [2021-02-22 02:21:34,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:21:34,212 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 236 transitions. [2021-02-22 02:21:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-02-22 02:21:34,215 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:34,216 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] [2021-02-22 02:21:34,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 02:21:34,216 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:34,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:34,218 INFO L82 PathProgramCache]: Analyzing trace with hash -762357340, now seen corresponding path program 1 times [2021-02-22 02:21:34,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:34,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559805147] [2021-02-22 02:21:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:34,227 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:34,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:34,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:34,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:34,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:34,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:34,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:34,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:34,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:34,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:34,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:34,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:34,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-22 02:21:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:34,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:34,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:34,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559805147] [2021-02-22 02:21:34,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:34,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:21:34,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879779373] [2021-02-22 02:21:34,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:21:34,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:34,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:21:34,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:21:34,359 INFO L87 Difference]: Start difference. First operand 209 states and 236 transitions. Second operand 5 states. [2021-02-22 02:21:34,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:34,565 INFO L93 Difference]: Finished difference Result 320 states and 359 transitions. [2021-02-22 02:21:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:21:34,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2021-02-22 02:21:34,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:34,570 INFO L225 Difference]: With dead ends: 320 [2021-02-22 02:21:34,571 INFO L226 Difference]: Without dead ends: 223 [2021-02-22 02:21:34,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:21:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-02-22 02:21:34,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 213. [2021-02-22 02:21:34,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-02-22 02:21:34,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 240 transitions. [2021-02-22 02:21:34,602 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 240 transitions. Word has length 70 [2021-02-22 02:21:34,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:34,602 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 240 transitions. [2021-02-22 02:21:34,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:21:34,602 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 240 transitions. [2021-02-22 02:21:34,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-22 02:21:34,604 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:34,604 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] [2021-02-22 02:21:34,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 02:21:34,604 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:34,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:34,605 INFO L82 PathProgramCache]: Analyzing trace with hash 220442596, now seen corresponding path program 1 times [2021-02-22 02:21:34,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:34,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370856567] [2021-02-22 02:21:34,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:34,608 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:34,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:34,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:34,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:34,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:21:34,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:34,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:34,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:34,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-22 02:21:34,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:34,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:34,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:34,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:34,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:34,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-02-22 02:21:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:34,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:34,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:34,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370856567] [2021-02-22 02:21:34,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:34,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 02:21:34,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136528175] [2021-02-22 02:21:34,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 02:21:34,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:34,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 02:21:34,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:21:34,690 INFO L87 Difference]: Start difference. First operand 213 states and 240 transitions. Second operand 6 states. [2021-02-22 02:21:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:34,971 INFO L93 Difference]: Finished difference Result 386 states and 432 transitions. [2021-02-22 02:21:34,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 02:21:34,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2021-02-22 02:21:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:34,974 INFO L225 Difference]: With dead ends: 386 [2021-02-22 02:21:34,974 INFO L226 Difference]: Without dead ends: 274 [2021-02-22 02:21:34,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-22 02:21:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-02-22 02:21:34,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 217. [2021-02-22 02:21:34,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-22 02:21:34,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 243 transitions. [2021-02-22 02:21:34,995 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 243 transitions. Word has length 71 [2021-02-22 02:21:34,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:34,995 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 243 transitions. [2021-02-22 02:21:34,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 02:21:34,996 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 243 transitions. [2021-02-22 02:21:34,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-22 02:21:34,997 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:34,997 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] [2021-02-22 02:21:34,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 02:21:34,997 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:34,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:34,998 INFO L82 PathProgramCache]: Analyzing trace with hash -767764281, now seen corresponding path program 1 times [2021-02-22 02:21:34,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:34,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023126793] [2021-02-22 02:21:34,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:35,000 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:35,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:35,027 WARN L141 QuantifierPusher]: treesize reduction 1, result has 85.7 percent of original size [2021-02-22 02:21:35,028 WARN L147 QuantifierPusher]: treesize reduction 1, result has 85.7 percent of original size 6 [2021-02-22 02:21:35,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:21:35,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:35,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:35,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:35,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:35,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-22 02:21:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:35,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:35,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023126793] [2021-02-22 02:21:35,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:35,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 02:21:35,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558275733] [2021-02-22 02:21:35,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 02:21:35,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:35,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 02:21:35,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:21:35,080 INFO L87 Difference]: Start difference. First operand 217 states and 243 transitions. Second operand 6 states. [2021-02-22 02:21:35,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:35,421 INFO L93 Difference]: Finished difference Result 358 states and 400 transitions. [2021-02-22 02:21:35,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:21:35,422 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2021-02-22 02:21:35,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:35,424 INFO L225 Difference]: With dead ends: 358 [2021-02-22 02:21:35,424 INFO L226 Difference]: Without dead ends: 261 [2021-02-22 02:21:35,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-22 02:21:35,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-02-22 02:21:35,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 217. [2021-02-22 02:21:35,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-22 02:21:35,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 242 transitions. [2021-02-22 02:21:35,449 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 242 transitions. Word has length 72 [2021-02-22 02:21:35,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:35,449 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 242 transitions. [2021-02-22 02:21:35,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 02:21:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 242 transitions. [2021-02-22 02:21:35,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-02-22 02:21:35,451 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:35,451 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] [2021-02-22 02:21:35,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 02:21:35,451 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:35,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:35,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1330822876, now seen corresponding path program 1 times [2021-02-22 02:21:35,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:35,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970354995] [2021-02-22 02:21:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:35,455 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:35,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:35,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:21:35,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:21:35,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:35,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:21:35,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-22 02:21:35,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:35,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:35,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:35,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-22 02:21:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:35,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:35,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:35,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970354995] [2021-02-22 02:21:35,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:35,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 02:21:35,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993437920] [2021-02-22 02:21:35,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 02:21:35,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:35,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 02:21:35,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-22 02:21:35,558 INFO L87 Difference]: Start difference. First operand 217 states and 242 transitions. Second operand 8 states. [2021-02-22 02:21:35,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:35,950 INFO L93 Difference]: Finished difference Result 460 states and 514 transitions. [2021-02-22 02:21:35,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 02:21:35,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2021-02-22 02:21:35,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:35,953 INFO L225 Difference]: With dead ends: 460 [2021-02-22 02:21:35,953 INFO L226 Difference]: Without dead ends: 303 [2021-02-22 02:21:35,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-02-22 02:21:35,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-02-22 02:21:36,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 224. [2021-02-22 02:21:36,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2021-02-22 02:21:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 246 transitions. [2021-02-22 02:21:36,004 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 246 transitions. Word has length 74 [2021-02-22 02:21:36,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:36,005 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 246 transitions. [2021-02-22 02:21:36,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 02:21:36,005 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 246 transitions. [2021-02-22 02:21:36,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-02-22 02:21:36,006 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:36,006 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-22 02:21:36,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 02:21:36,007 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:36,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:36,007 INFO L82 PathProgramCache]: Analyzing trace with hash -448602513, now seen corresponding path program 1 times [2021-02-22 02:21:36,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:36,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911960023] [2021-02-22 02:21:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:36,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:36,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-22 02:21:36,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:36,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-22 02:21:36,065 WARN L141 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size [2021-02-22 02:21:36,079 WARN L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-02-22 02:21:36,085 WARN L141 QuantifierPusher]: treesize reduction 20, result has 57.4 percent of original size [2021-02-22 02:21:36,087 WARN L147 QuantifierPusher]: treesize reduction 20, result has 57.4 percent of original size 27 [2021-02-22 02:21:36,088 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:21:36,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-22 02:21:36,092 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_parse_expression_list_#t~short10_14| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateFactory.newSPredicate(PredicateFactory.java:60) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.generateMetaTrace(AcceleratedInterpolationCore.java:379) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:225) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-22 02:21:36,096 INFO L168 Benchmark]: Toolchain (without parser) took 6868.41 ms. Allocated memory was 152.0 MB in the beginning and 230.7 MB in the end (delta: 78.6 MB). Free memory was 128.6 MB in the beginning and 199.7 MB in the end (delta: -71.1 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:36,096 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:21:36,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.32 ms. Allocated memory is still 152.0 MB. Free memory was 127.5 MB in the beginning and 116.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:36,097 INFO L168 Benchmark]: Boogie Preprocessor took 66.38 ms. Allocated memory is still 152.0 MB. Free memory was 116.1 MB in the beginning and 114.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:36,097 INFO L168 Benchmark]: RCFGBuilder took 886.07 ms. Allocated memory is still 152.0 MB. Free memory was 114.0 MB in the beginning and 116.0 MB in the end (delta: -2.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:36,098 INFO L168 Benchmark]: TraceAbstraction took 5601.57 ms. Allocated memory was 152.0 MB in the beginning and 230.7 MB in the end (delta: 78.6 MB). Free memory was 115.5 MB in the beginning and 199.7 MB in the end (delta: -84.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:21:36,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 291.32 ms. Allocated memory is still 152.0 MB. Free memory was 127.5 MB in the beginning and 116.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.38 ms. Allocated memory is still 152.0 MB. Free memory was 116.1 MB in the beginning and 114.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 886.07 ms. Allocated memory is still 152.0 MB. Free memory was 114.0 MB in the beginning and 116.0 MB in the end (delta: -2.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5601.57 ms. Allocated memory was 152.0 MB in the beginning and 230.7 MB in the end (delta: 78.6 MB). Free memory was 115.5 MB in the beginning and 199.7 MB in the end (delta: -84.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_parse_expression_list_#t~short10_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_parse_expression_list_#t~short10_14|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...