/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/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:25:34,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:25:34,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:25:34,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-07 16:25:34,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-07 16:25:34,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-07 16:25:34,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-07 16:25:34,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-07 16:25:34,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-07 16:25:34,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-07 16:25:34,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-07 16:25:34,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-07 16:25:34,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 16:25:34,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 16:25:34,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 16:25:34,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 16:25:34,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 16:25:34,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 16:25:34,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 16:25:34,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 16:25:34,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 16:25:34,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 16:25:34,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 16:25:34,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 16:25:34,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-07 16:25:34,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-07 16:25:34,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-07 16:25:34,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-07 16:25:34,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-07 16:25:34,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-07 16:25:34,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 16:25:34,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 16:25:34,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 16:25:34,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 16:25:34,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 16:25:34,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 16:25:34,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 16:25:34,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 16:25:34,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 16:25:34,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 16:25:34,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 16:25:34,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 16:25:34,590 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:25:34,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:25:34,590 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:25:34,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:25:34,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:25:34,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:25:34,596 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:25:34,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:25:34,597 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:25:34,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:25:34,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:25:34,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:25:34,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:25:34,598 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:25:34,601 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:25:34,601 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:25:34,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:25:34,602 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:25:34,602 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:25:34,602 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:25:34,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:25:34,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:25:34,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:25:34,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:25:34,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:25:34,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:25:34,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:25:34,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:25:34,604 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:25:34,605 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:25:34,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:25:34,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:25:34,605 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:25:35,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:25:35,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:25:35,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:25:35,053 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:25:35,057 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:25:35,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2021-10-07 16:25:35,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1480fa204/6f1edc02ff9041668d7afc39dbfb214b/FLAG9fabc5564 [2021-10-07 16:25:35,789 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:25:35,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2021-10-07 16:25:35,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1480fa204/6f1edc02ff9041668d7afc39dbfb214b/FLAG9fabc5564 [2021-10-07 16:25:36,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1480fa204/6f1edc02ff9041668d7afc39dbfb214b [2021-10-07 16:25:36,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:25:36,156 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:25:36,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:25:36,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:25:36,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:25:36,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:25:36" (1/1) ... [2021-10-07 16:25:36,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e3e390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:36, skipping insertion in model container [2021-10-07 16:25:36,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:25:36" (1/1) ... [2021-10-07 16:25:36,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:25:36,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:25:36,394 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2793,2806] [2021-10-07 16:25:36,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:25:36,422 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 16:25:36,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:25:36,465 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2793,2806] [2021-10-07 16:25:36,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:25:36,489 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:25:36,550 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2793,2806] [2021-10-07 16:25:36,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:25:36,598 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:25:36,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:36 WrapperNode [2021-10-07 16:25:36,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:25:36,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:25:36,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:25:36,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:25:36,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:36" (1/1) ... [2021-10-07 16:25:36,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:36" (1/1) ... [2021-10-07 16:25:36,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:25:36,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:25:36,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:25:36,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:25:36,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:36" (1/1) ... [2021-10-07 16:25:36,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:36" (1/1) ... [2021-10-07 16:25:36,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:36" (1/1) ... [2021-10-07 16:25:36,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:36" (1/1) ... [2021-10-07 16:25:36,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:36" (1/1) ... [2021-10-07 16:25:36,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:36" (1/1) ... [2021-10-07 16:25:36,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:36" (1/1) ... [2021-10-07 16:25:36,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:25:36,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:25:36,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:25:36,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:25:36,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:36" (1/1) ... [2021-10-07 16:25:36,817 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:25:36,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:25:36,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 16:25:36,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 16:25:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:25:36,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:25:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:25:36,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:25:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:25:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:25:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 16:25:36,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 16:25:36,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 16:25:36,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:25:36,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:25:36,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:25:36,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:25:36,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:25:36,935 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 16:25:38,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:25:38,338 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-07 16:25:38,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:25:38 BoogieIcfgContainer [2021-10-07 16:25:38,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:25:38,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:25:38,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:25:38,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:25:38,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:25:36" (1/3) ... [2021-10-07 16:25:38,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580babac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:25:38, skipping insertion in model container [2021-10-07 16:25:38,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:36" (2/3) ... [2021-10-07 16:25:38,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580babac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:25:38, skipping insertion in model container [2021-10-07 16:25:38,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:25:38" (3/3) ... [2021-10-07 16:25:38,353 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2021-10-07 16:25:38,368 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:25:38,368 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-07 16:25:38,368 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:25:38,411 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,411 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,412 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,412 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,412 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,412 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,413 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,413 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,413 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,413 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,413 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,414 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,414 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,414 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,414 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,415 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,415 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,415 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,415 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,415 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,416 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,416 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,416 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,416 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,417 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,417 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,417 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,417 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,417 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,418 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,418 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,418 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,418 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,418 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,419 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,419 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,419 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,419 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,420 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,421 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,421 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,421 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,421 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,421 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,422 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,422 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,422 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,422 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,423 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,423 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,423 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,423 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,423 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,424 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,424 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,424 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,424 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,425 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,425 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,425 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,426 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,426 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,426 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,426 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,426 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,427 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,427 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,428 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,428 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,428 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,428 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,428 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,429 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,429 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,429 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,429 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,433 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,435 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,438 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,438 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,438 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,439 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,439 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,439 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,439 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:38,445 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 16:25:38,502 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:25:38,510 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 16:25:38,511 INFO L340 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2021-10-07 16:25:38,532 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:25:38,546 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 147 transitions, 310 flow [2021-10-07 16:25:38,549 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 147 transitions, 310 flow [2021-10-07 16:25:38,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 143 places, 147 transitions, 310 flow [2021-10-07 16:25:38,642 INFO L129 PetriNetUnfolder]: 11/145 cut-off events. [2021-10-07 16:25:38,643 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 16:25:38,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 145 events. 11/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 153 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 102. Up to 3 conditions per place. [2021-10-07 16:25:38,654 INFO L116 LiptonReduction]: Number of co-enabled transitions 1198 [2021-10-07 16:25:59,832 INFO L131 LiptonReduction]: Checked pairs total: 1482 [2021-10-07 16:25:59,833 INFO L133 LiptonReduction]: Total number of compositions: 159 [2021-10-07 16:25:59,844 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 37 transitions, 90 flow [2021-10-07 16:25:59,867 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 198 states, 132 states have (on average 3.727272727272727) internal successors, (492), 197 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:59,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 132 states have (on average 3.727272727272727) internal successors, (492), 197 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:25:59,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:25:59,878 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:25:59,878 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:25:59,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:25:59,885 INFO L82 PathProgramCache]: Analyzing trace with hash 21515, now seen corresponding path program 1 times [2021-10-07 16:25:59,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:25:59,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759887625] [2021-10-07 16:25:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:25:59,901 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:25:59,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:25:59,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:25:59,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 16:25:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:25:59,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:25:59,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:00,346 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 16:26:00,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-07 16:26:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:00,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:00,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:00,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:00,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759887625] [2021-10-07 16:26:00,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759887625] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:26:00,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:26:00,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:26:00,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141965577] [2021-10-07 16:26:00,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:26:00,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:00,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:26:00,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:26:00,979 INFO L87 Difference]: Start difference. First operand has 198 states, 132 states have (on average 3.727272727272727) internal successors, (492), 197 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:01,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:01,120 INFO L93 Difference]: Finished difference Result 196 states and 490 transitions. [2021-10-07 16:26:01,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:26:01,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 16:26:01,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:01,139 INFO L225 Difference]: With dead ends: 196 [2021-10-07 16:26:01,139 INFO L226 Difference]: Without dead ends: 196 [2021-10-07 16:26:01,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:26:01,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-07 16:26:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-10-07 16:26:01,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 132 states have (on average 3.712121212121212) internal successors, (490), 195 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 490 transitions. [2021-10-07 16:26:01,203 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 490 transitions. Word has length 2 [2021-10-07 16:26:01,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:01,205 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 490 transitions. [2021-10-07 16:26:01,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:01,205 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 490 transitions. [2021-10-07 16:26:01,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:26:01,206 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:01,206 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:26:01,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-07 16:26:01,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:01,418 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:01,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:01,420 INFO L82 PathProgramCache]: Analyzing trace with hash 21516, now seen corresponding path program 1 times [2021-10-07 16:26:01,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:01,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786834287] [2021-10-07 16:26:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:26:01,422 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:01,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:01,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:01,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 16:26:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:26:01,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:26:01,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:01,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:26:01,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:26:01,727 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:26:01,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:26:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:01,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:01,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:01,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786834287] [2021-10-07 16:26:01,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786834287] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:26:01,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:26:01,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:26:01,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624193728] [2021-10-07 16:26:01,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:26:01,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:01,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:26:01,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:26:01,914 INFO L87 Difference]: Start difference. First operand 196 states and 490 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:02,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:02,417 INFO L93 Difference]: Finished difference Result 391 states and 982 transitions. [2021-10-07 16:26:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:26:02,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 16:26:02,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:02,424 INFO L225 Difference]: With dead ends: 391 [2021-10-07 16:26:02,425 INFO L226 Difference]: Without dead ends: 391 [2021-10-07 16:26:02,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:26:02,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-10-07 16:26:02,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 198. [2021-10-07 16:26:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 134 states have (on average 3.716417910447761) internal successors, (498), 197 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:02,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 498 transitions. [2021-10-07 16:26:02,453 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 498 transitions. Word has length 2 [2021-10-07 16:26:02,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:02,453 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 498 transitions. [2021-10-07 16:26:02,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:02,453 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 498 transitions. [2021-10-07 16:26:02,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:26:02,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:02,454 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:26:02,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-07 16:26:02,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:02,667 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:02,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:02,668 INFO L82 PathProgramCache]: Analyzing trace with hash 21630, now seen corresponding path program 1 times [2021-10-07 16:26:02,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:02,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490474243] [2021-10-07 16:26:02,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:26:02,669 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:02,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:02,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:02,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 16:26:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:26:02,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:26:02,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:03,006 INFO L354 Elim1Store]: treesize reduction 151, result has 21.8 percent of original size [2021-10-07 16:26:03,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 74 [2021-10-07 16:26:03,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 257 [2021-10-07 16:26:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:03,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:03,640 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:03,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490474243] [2021-10-07 16:26:03,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490474243] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:26:03,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:26:03,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:26:03,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080122208] [2021-10-07 16:26:03,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:26:03,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:03,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:26:03,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:26:03,643 INFO L87 Difference]: Start difference. First operand 198 states and 498 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:03,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:03,806 INFO L93 Difference]: Finished difference Result 162 states and 390 transitions. [2021-10-07 16:26:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:26:03,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 16:26:03,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:03,810 INFO L225 Difference]: With dead ends: 162 [2021-10-07 16:26:03,810 INFO L226 Difference]: Without dead ends: 162 [2021-10-07 16:26:03,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:26:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-07 16:26:03,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-10-07 16:26:03,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 114 states have (on average 3.4210526315789473) internal successors, (390), 161 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 390 transitions. [2021-10-07 16:26:03,825 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 390 transitions. Word has length 2 [2021-10-07 16:26:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:03,825 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 390 transitions. [2021-10-07 16:26:03,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 390 transitions. [2021-10-07 16:26:03,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:26:03,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:03,826 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:26:03,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:04,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:04,040 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:04,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:04,041 INFO L82 PathProgramCache]: Analyzing trace with hash 21631, now seen corresponding path program 1 times [2021-10-07 16:26:04,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:04,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043824264] [2021-10-07 16:26:04,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:26:04,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:04,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:04,044 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:04,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 16:26:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:26:04,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:26:04,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:04,295 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 16:26:04,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 178 [2021-10-07 16:26:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:05,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:05,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:05,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043824264] [2021-10-07 16:26:05,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043824264] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:26:05,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:26:05,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:26:05,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800086152] [2021-10-07 16:26:05,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:26:05,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:05,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:26:05,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:26:05,844 INFO L87 Difference]: Start difference. First operand 162 states and 390 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:05,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:05,972 INFO L93 Difference]: Finished difference Result 126 states and 282 transitions. [2021-10-07 16:26:05,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:26:05,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 16:26:05,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:05,974 INFO L225 Difference]: With dead ends: 126 [2021-10-07 16:26:05,975 INFO L226 Difference]: Without dead ends: 126 [2021-10-07 16:26:05,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:26:05,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-07 16:26:05,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-07 16:26:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 94 states have (on average 3.0) internal successors, (282), 125 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 282 transitions. [2021-10-07 16:26:05,984 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 282 transitions. Word has length 2 [2021-10-07 16:26:05,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:05,985 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 282 transitions. [2021-10-07 16:26:05,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:05,985 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 282 transitions. [2021-10-07 16:26:05,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:26:05,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:05,986 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 16:26:06,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:06,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:06,201 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:06,202 INFO L82 PathProgramCache]: Analyzing trace with hash 20776140, now seen corresponding path program 1 times [2021-10-07 16:26:06,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:06,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785344260] [2021-10-07 16:26:06,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:26:06,204 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:06,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:06,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:06,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 16:26:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:26:06,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:26:06,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:06,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:26:06,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:26:06,492 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:26:06,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:26:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:06,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:07,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:07,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785344260] [2021-10-07 16:26:07,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785344260] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:26:07,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:26:07,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:26:07,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126356299] [2021-10-07 16:26:07,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:26:07,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:07,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:26:07,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:26:07,228 INFO L87 Difference]: Start difference. First operand 126 states and 282 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:08,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:08,993 INFO L93 Difference]: Finished difference Result 735 states and 1660 transitions. [2021-10-07 16:26:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:26:08,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 16:26:08,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:09,002 INFO L225 Difference]: With dead ends: 735 [2021-10-07 16:26:09,003 INFO L226 Difference]: Without dead ends: 735 [2021-10-07 16:26:09,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 938.8ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:26:09,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-10-07 16:26:09,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 130. [2021-10-07 16:26:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 98 states have (on average 2.9591836734693877) internal successors, (290), 129 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 290 transitions. [2021-10-07 16:26:09,018 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 290 transitions. Word has length 4 [2021-10-07 16:26:09,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:09,019 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 290 transitions. [2021-10-07 16:26:09,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:09,019 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 290 transitions. [2021-10-07 16:26:09,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:26:09,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:09,020 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 16:26:09,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:09,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:09,235 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:09,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:09,236 INFO L82 PathProgramCache]: Analyzing trace with hash 20803938, now seen corresponding path program 1 times [2021-10-07 16:26:09,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:09,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527612146] [2021-10-07 16:26:09,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:26:09,238 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:09,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:09,239 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:09,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 16:26:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:26:09,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:26:09,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:09,465 INFO L354 Elim1Store]: treesize reduction 155, result has 19.7 percent of original size [2021-10-07 16:26:09,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 66 [2021-10-07 16:26:09,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 703 treesize of output 671 [2021-10-07 16:26:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:10,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:10,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:10,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527612146] [2021-10-07 16:26:10,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527612146] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:26:10,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:26:10,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:26:10,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608414786] [2021-10-07 16:26:10,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:26:10,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:10,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:26:10,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:26:10,242 INFO L87 Difference]: Start difference. First operand 130 states and 290 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:10,369 INFO L93 Difference]: Finished difference Result 118 states and 266 transitions. [2021-10-07 16:26:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:26:10,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 16:26:10,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:10,371 INFO L225 Difference]: With dead ends: 118 [2021-10-07 16:26:10,371 INFO L226 Difference]: Without dead ends: 118 [2021-10-07 16:26:10,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 181.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:26:10,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-07 16:26:10,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-07 16:26:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 94 states have (on average 2.8297872340425534) internal successors, (266), 117 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:10,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 266 transitions. [2021-10-07 16:26:10,378 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 266 transitions. Word has length 4 [2021-10-07 16:26:10,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:10,378 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 266 transitions. [2021-10-07 16:26:10,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:10,379 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 266 transitions. [2021-10-07 16:26:10,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:26:10,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:10,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 16:26:10,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:10,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:10,592 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:10,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:10,594 INFO L82 PathProgramCache]: Analyzing trace with hash 20803940, now seen corresponding path program 1 times [2021-10-07 16:26:10,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:10,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867595709] [2021-10-07 16:26:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:26:10,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:10,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:10,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:10,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 16:26:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:26:10,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:26:10,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:10,832 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 16:26:10,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-07 16:26:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:11,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:11,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:11,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867595709] [2021-10-07 16:26:11,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867595709] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:26:11,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:26:11,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:26:11,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855071071] [2021-10-07 16:26:11,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:26:11,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:11,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:26:11,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:26:11,260 INFO L87 Difference]: Start difference. First operand 118 states and 266 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:11,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:11,353 INFO L93 Difference]: Finished difference Result 106 states and 242 transitions. [2021-10-07 16:26:11,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:26:11,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 16:26:11,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:11,356 INFO L225 Difference]: With dead ends: 106 [2021-10-07 16:26:11,356 INFO L226 Difference]: Without dead ends: 106 [2021-10-07 16:26:11,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:26:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-07 16:26:11,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-10-07 16:26:11,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 90 states have (on average 2.688888888888889) internal successors, (242), 105 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:11,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 242 transitions. [2021-10-07 16:26:11,362 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 242 transitions. Word has length 4 [2021-10-07 16:26:11,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:11,362 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 242 transitions. [2021-10-07 16:26:11,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:11,362 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 242 transitions. [2021-10-07 16:26:11,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:26:11,363 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:11,363 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:26:11,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:11,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:11,579 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:11,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:11,580 INFO L82 PathProgramCache]: Analyzing trace with hash 644917555, now seen corresponding path program 1 times [2021-10-07 16:26:11,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:11,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411086010] [2021-10-07 16:26:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:26:11,582 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:11,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:11,583 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:11,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 16:26:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:26:11,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:26:11,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:11,821 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 16:26:11,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-07 16:26:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:12,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:12,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:12,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411086010] [2021-10-07 16:26:12,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411086010] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:26:12,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:26:12,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-07 16:26:12,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646464469] [2021-10-07 16:26:12,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:26:12,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:12,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:26:12,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:26:12,225 INFO L87 Difference]: Start difference. First operand 106 states and 242 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:12,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:12,340 INFO L93 Difference]: Finished difference Result 70 states and 155 transitions. [2021-10-07 16:26:12,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:26:12,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:26:12,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:12,343 INFO L225 Difference]: With dead ends: 70 [2021-10-07 16:26:12,343 INFO L226 Difference]: Without dead ends: 70 [2021-10-07 16:26:12,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:26:12,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-07 16:26:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-07 16:26:12,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 63 states have (on average 2.4603174603174605) internal successors, (155), 69 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:12,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 155 transitions. [2021-10-07 16:26:12,347 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 155 transitions. Word has length 5 [2021-10-07 16:26:12,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:12,347 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 155 transitions. [2021-10-07 16:26:12,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:12,348 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 155 transitions. [2021-10-07 16:26:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:26:12,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:12,348 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:26:12,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:12,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:12,561 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:12,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:12,562 INFO L82 PathProgramCache]: Analyzing trace with hash 644917556, now seen corresponding path program 1 times [2021-10-07 16:26:12,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:12,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938468682] [2021-10-07 16:26:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:26:12,564 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:12,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:12,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:12,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 16:26:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:26:12,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:26:12,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:12,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:12,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:12,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:12,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938468682] [2021-10-07 16:26:12,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938468682] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:26:12,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:26:12,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:26:12,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344959282] [2021-10-07 16:26:12,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:26:12,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:12,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:26:12,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:26:12,750 INFO L87 Difference]: Start difference. First operand 70 states and 155 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:12,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:12,927 INFO L93 Difference]: Finished difference Result 83 states and 174 transitions. [2021-10-07 16:26:12,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:26:12,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:26:12,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:12,929 INFO L225 Difference]: With dead ends: 83 [2021-10-07 16:26:12,929 INFO L226 Difference]: Without dead ends: 70 [2021-10-07 16:26:12,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:26:12,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-07 16:26:12,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-07 16:26:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 63 states have (on average 2.4444444444444446) internal successors, (154), 69 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 154 transitions. [2021-10-07 16:26:12,933 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 154 transitions. Word has length 5 [2021-10-07 16:26:12,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:12,933 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 154 transitions. [2021-10-07 16:26:12,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 154 transitions. [2021-10-07 16:26:12,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 16:26:12,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:12,934 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 16:26:12,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:13,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:13,147 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:13,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:13,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1508012562, now seen corresponding path program 1 times [2021-10-07 16:26:13,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:13,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963959810] [2021-10-07 16:26:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:26:13,149 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:13,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:13,150 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:13,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 16:26:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:26:13,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:26:13,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:13,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:26:13,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:26:13,417 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:26:13,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:26:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:13,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:14,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:14,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963959810] [2021-10-07 16:26:14,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963959810] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:26:14,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:26:14,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:26:14,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659766548] [2021-10-07 16:26:14,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:26:14,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:14,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:26:14,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:26:14,566 INFO L87 Difference]: Start difference. First operand 70 states and 154 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:16,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:16,726 INFO L93 Difference]: Finished difference Result 136 states and 298 transitions. [2021-10-07 16:26:16,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 16:26:16,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 16:26:16,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:16,733 INFO L225 Difference]: With dead ends: 136 [2021-10-07 16:26:16,733 INFO L226 Difference]: Without dead ends: 136 [2021-10-07 16:26:16,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1669.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:26:16,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-07 16:26:16,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2021-10-07 16:26:16,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 90 states have (on average 2.4555555555555557) internal successors, (221), 96 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 221 transitions. [2021-10-07 16:26:16,740 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 221 transitions. Word has length 6 [2021-10-07 16:26:16,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:16,740 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 221 transitions. [2021-10-07 16:26:16,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:16,744 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 221 transitions. [2021-10-07 16:26:16,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:26:16,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:16,746 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-07 16:26:16,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:16,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:16,959 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:16,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:16,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1678169676, now seen corresponding path program 2 times [2021-10-07 16:26:16,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:16,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069703580] [2021-10-07 16:26:16,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:26:16,962 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:16,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:16,963 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:16,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 16:26:17,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:26:17,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:26:17,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:26:17,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:17,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:26:17,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:26:17,257 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:26:17,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:26:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:17,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:26:19,691 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:19,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069703580] [2021-10-07 16:26:19,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069703580] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:26:19,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:26:19,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:26:19,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81650950] [2021-10-07 16:26:19,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:26:19,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:26:19,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:26:19,694 INFO L87 Difference]: Start difference. First operand 97 states and 221 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:28,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:28,103 INFO L93 Difference]: Finished difference Result 726 states and 1637 transitions. [2021-10-07 16:26:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:26:28,104 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:26:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:28,110 INFO L225 Difference]: With dead ends: 726 [2021-10-07 16:26:28,110 INFO L226 Difference]: Without dead ends: 726 [2021-10-07 16:26:28,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6592.3ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:26:28,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-10-07 16:26:28,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 105. [2021-10-07 16:26:28,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 98 states have (on average 2.4183673469387754) internal successors, (237), 104 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:28,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 237 transitions. [2021-10-07 16:26:28,123 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 237 transitions. Word has length 8 [2021-10-07 16:26:28,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:28,123 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 237 transitions. [2021-10-07 16:26:28,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:28,123 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 237 transitions. [2021-10-07 16:26:28,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 16:26:28,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:28,124 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-07 16:26:28,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:28,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:28,337 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:28,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:28,338 INFO L82 PathProgramCache]: Analyzing trace with hash 484509620, now seen corresponding path program 2 times [2021-10-07 16:26:28,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:28,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081239937] [2021-10-07 16:26:28,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:26:28,339 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:28,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:28,341 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:28,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 16:26:28,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:26:28,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:26:28,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:26:28,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:28,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:26:28,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:26:28,649 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:26:28,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:26:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 16:26:28,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 16:26:29,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:29,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081239937] [2021-10-07 16:26:29,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081239937] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:26:29,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:26:29,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:26:29,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943709501] [2021-10-07 16:26:29,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:26:29,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:29,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:26:29,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:26:29,958 INFO L87 Difference]: Start difference. First operand 105 states and 237 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:30,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:30,152 INFO L93 Difference]: Finished difference Result 77 states and 170 transitions. [2021-10-07 16:26:30,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:26:30,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 16:26:30,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:30,156 INFO L225 Difference]: With dead ends: 77 [2021-10-07 16:26:30,156 INFO L226 Difference]: Without dead ends: 77 [2021-10-07 16:26:30,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 187.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:26:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-07 16:26:30,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 50. [2021-10-07 16:26:30,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 49 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 103 transitions. [2021-10-07 16:26:30,160 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 103 transitions. Word has length 9 [2021-10-07 16:26:30,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:30,162 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 103 transitions. [2021-10-07 16:26:30,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 103 transitions. [2021-10-07 16:26:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:26:30,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:30,164 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:26:30,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:30,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:30,365 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:30,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:30,365 INFO L82 PathProgramCache]: Analyzing trace with hash 467640382, now seen corresponding path program 1 times [2021-10-07 16:26:30,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:30,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267625505] [2021-10-07 16:26:30,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:26:30,367 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:30,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:30,368 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:30,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 16:26:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:26:30,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:26:30,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:26:30,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:26:31,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:31,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267625505] [2021-10-07 16:26:31,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267625505] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:26:31,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:26:31,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-07 16:26:31,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607646553] [2021-10-07 16:26:31,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:26:31,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:31,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:26:31,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:26:31,186 INFO L87 Difference]: Start difference. First operand 50 states and 103 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:31,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:31,802 INFO L93 Difference]: Finished difference Result 93 states and 205 transitions. [2021-10-07 16:26:31,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:26:31,803 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:26:31,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:31,807 INFO L225 Difference]: With dead ends: 93 [2021-10-07 16:26:31,807 INFO L226 Difference]: Without dead ends: 88 [2021-10-07 16:26:31,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 276.8ms TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:26:31,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-07 16:26:31,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 64. [2021-10-07 16:26:31,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 2.129032258064516) internal successors, (132), 63 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:31,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 132 transitions. [2021-10-07 16:26:31,813 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 132 transitions. Word has length 15 [2021-10-07 16:26:31,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:31,813 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 132 transitions. [2021-10-07 16:26:31,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:31,814 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 132 transitions. [2021-10-07 16:26:31,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:26:31,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:31,816 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:26:31,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:32,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:32,034 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:32,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:32,035 INFO L82 PathProgramCache]: Analyzing trace with hash 877123298, now seen corresponding path program 2 times [2021-10-07 16:26:32,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:32,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215272359] [2021-10-07 16:26:32,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:26:32,036 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:32,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:32,037 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:32,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 16:26:32,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:26:32,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:26:32,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:26:32,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:32,686 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:26:32,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-10-07 16:26:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:26:32,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:33,253 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 16:26:33,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 96 treesize of output 74 [2021-10-07 16:26:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:26:45,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:45,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215272359] [2021-10-07 16:26:45,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215272359] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:26:45,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:26:45,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-07 16:26:45,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346564522] [2021-10-07 16:26:45,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:26:45,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:45,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:26:45,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:26:45,282 INFO L87 Difference]: Start difference. First operand 64 states and 132 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:45,997 INFO L93 Difference]: Finished difference Result 81 states and 168 transitions. [2021-10-07 16:26:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 16:26:45,998 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:26:45,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:45,999 INFO L225 Difference]: With dead ends: 81 [2021-10-07 16:26:45,999 INFO L226 Difference]: Without dead ends: 72 [2021-10-07 16:26:45,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 585.2ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:26:46,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-07 16:26:46,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2021-10-07 16:26:46,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 64 states have (on average 2.078125) internal successors, (133), 65 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2021-10-07 16:26:46,004 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 15 [2021-10-07 16:26:46,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:46,005 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2021-10-07 16:26:46,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2021-10-07 16:26:46,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:26:46,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:46,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:26:46,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-07 16:26:46,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:46,224 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:46,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:46,224 INFO L82 PathProgramCache]: Analyzing trace with hash 670115006, now seen corresponding path program 3 times [2021-10-07 16:26:46,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:46,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888669228] [2021-10-07 16:26:46,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:26:46,226 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:46,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:46,228 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:46,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 16:26:46,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 16:26:46,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:26:46,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:26:46,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:46,805 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:26:46,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-10-07 16:26:46,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:26:46,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:47,217 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 16:26:47,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 96 treesize of output 74 [2021-10-07 16:26:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:26:57,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:57,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888669228] [2021-10-07 16:26:57,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888669228] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:26:57,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:26:57,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-07 16:26:57,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532662682] [2021-10-07 16:26:57,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:26:57,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:57,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:26:57,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:26:57,929 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:58,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:58,977 INFO L93 Difference]: Finished difference Result 77 states and 153 transitions. [2021-10-07 16:26:58,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 16:26:58,978 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:26:58,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:58,978 INFO L225 Difference]: With dead ends: 77 [2021-10-07 16:26:58,978 INFO L226 Difference]: Without dead ends: 68 [2021-10-07 16:26:58,979 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 651.7ms TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:26:58,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-07 16:26:58,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2021-10-07 16:26:58,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 2.064516129032258) internal successors, (128), 63 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:58,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 128 transitions. [2021-10-07 16:26:58,982 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 128 transitions. Word has length 15 [2021-10-07 16:26:58,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:58,982 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 128 transitions. [2021-10-07 16:26:58,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:58,983 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 128 transitions. [2021-10-07 16:26:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:26:58,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:58,984 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-07 16:26:58,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:59,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:59,188 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:26:59,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:59,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1294743884, now seen corresponding path program 3 times [2021-10-07 16:26:59,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:59,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913053665] [2021-10-07 16:26:59,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:26:59,190 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:59,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:59,191 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:59,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 16:26:59,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-07 16:26:59,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:26:59,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:26:59,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:59,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:26:59,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:26:59,799 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:26:59,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:27:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:27:00,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:27:05,990 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:27:05,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:27:05,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913053665] [2021-10-07 16:27:05,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913053665] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:27:05,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:27:05,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-07 16:27:05,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412483024] [2021-10-07 16:27:05,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 16:27:05,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:27:05,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 16:27:05,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-07 16:27:05,994 INFO L87 Difference]: Start difference. First operand 64 states and 128 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:27:19,753 WARN L207 SmtUtils]: Spent 10.17 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-07 16:27:29,147 WARN L207 SmtUtils]: Spent 8.47 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-07 16:27:36,521 WARN L207 SmtUtils]: Spent 6.62 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-07 16:27:43,100 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-07 16:28:06,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:06,276 INFO L93 Difference]: Finished difference Result 1396 states and 2876 transitions. [2021-10-07 16:28:06,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 16:28:06,278 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:28:06,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:06,286 INFO L225 Difference]: With dead ends: 1396 [2021-10-07 16:28:06,287 INFO L226 Difference]: Without dead ends: 1396 [2021-10-07 16:28:06,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 55385.2ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 16:28:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-10-07 16:28:06,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 80. [2021-10-07 16:28:06,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 2.051282051282051) internal successors, (160), 79 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 160 transitions. [2021-10-07 16:28:06,302 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 160 transitions. Word has length 16 [2021-10-07 16:28:06,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:06,303 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 160 transitions. [2021-10-07 16:28:06,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 160 transitions. [2021-10-07 16:28:06,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:28:06,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:06,304 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:06,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 16:28:06,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:28:06,518 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:28:06,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:06,519 INFO L82 PathProgramCache]: Analyzing trace with hash -276305005, now seen corresponding path program 1 times [2021-10-07 16:28:06,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:06,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088865658] [2021-10-07 16:28:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:28:06,520 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:06,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:06,522 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:28:06,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 16:28:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:28:06,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:28:06,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:06,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:28:06,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:28:06,966 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:28:06,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:28:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:28:07,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:28:07,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:07,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088865658] [2021-10-07 16:28:07,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088865658] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:28:07,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:28:07,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:28:07,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412397026] [2021-10-07 16:28:07,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:28:07,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:07,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:28:07,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:28:07,628 INFO L87 Difference]: Start difference. First operand 80 states and 160 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:08,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:08,281 INFO L93 Difference]: Finished difference Result 121 states and 232 transitions. [2021-10-07 16:28:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:28:08,282 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:28:08,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:08,283 INFO L225 Difference]: With dead ends: 121 [2021-10-07 16:28:08,283 INFO L226 Difference]: Without dead ends: 109 [2021-10-07 16:28:08,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 475.8ms TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:28:08,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-07 16:28:08,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 89. [2021-10-07 16:28:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 2.0114942528735633) internal successors, (175), 88 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:08,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 175 transitions. [2021-10-07 16:28:08,287 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 175 transitions. Word has length 16 [2021-10-07 16:28:08,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:08,288 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 175 transitions. [2021-10-07 16:28:08,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:08,288 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 175 transitions. [2021-10-07 16:28:08,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:28:08,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:08,289 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:08,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-07 16:28:08,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:28:08,504 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:28:08,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:08,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1611190595, now seen corresponding path program 1 times [2021-10-07 16:28:08,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:08,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894657437] [2021-10-07 16:28:08,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:28:08,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:08,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:08,507 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:28:08,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 16:28:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:28:08,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:28:08,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:28:09,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:28:09,653 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:09,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894657437] [2021-10-07 16:28:09,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894657437] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:28:09,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:28:09,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 16:28:09,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734111786] [2021-10-07 16:28:09,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:28:09,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:09,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:28:09,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:28:09,656 INFO L87 Difference]: Start difference. First operand 89 states and 175 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:10,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:10,597 INFO L93 Difference]: Finished difference Result 135 states and 255 transitions. [2021-10-07 16:28:10,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 16:28:10,598 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:28:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:10,599 INFO L225 Difference]: With dead ends: 135 [2021-10-07 16:28:10,599 INFO L226 Difference]: Without dead ends: 98 [2021-10-07 16:28:10,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 597.0ms TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:28:10,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-07 16:28:10,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 82. [2021-10-07 16:28:10,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 2.1625) internal successors, (173), 81 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:10,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 173 transitions. [2021-10-07 16:28:10,604 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 173 transitions. Word has length 16 [2021-10-07 16:28:10,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:10,604 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 173 transitions. [2021-10-07 16:28:10,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:10,604 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 173 transitions. [2021-10-07 16:28:10,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:28:10,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:10,605 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:10,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 16:28:10,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:28:10,819 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:28:10,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:10,820 INFO L82 PathProgramCache]: Analyzing trace with hash -88691047, now seen corresponding path program 2 times [2021-10-07 16:28:10,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:10,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942835059] [2021-10-07 16:28:10,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:28:10,821 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:10,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:10,822 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:28:10,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 16:28:11,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:28:11,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:28:11,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:28:11,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:11,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 446 treesize of output 430 [2021-10-07 16:28:11,760 INFO L354 Elim1Store]: treesize reduction 1262, result has 5.7 percent of original size [2021-10-07 16:28:11,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 79 treesize of output 99 [2021-10-07 16:28:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:28:16,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:18,411 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~pre17_62| (_ BitVec 32)) (|ULTIMATE.start_main_~#t2~0.offset| (_ BitVec 32))) (not (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0.base| (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0.base|) |ULTIMATE.start_main_~#t2~0.offset| ((_ extract 7 0) |v_ULTIMATE.start_main_#t~pre17_62|)) (bvadd |ULTIMATE.start_main_~#t2~0.offset| (_ bv1 32)) ((_ extract 15 8) |v_ULTIMATE.start_main_#t~pre17_62|)) (bvadd |ULTIMATE.start_main_~#t2~0.offset| (_ bv2 32)) ((_ extract 23 16) |v_ULTIMATE.start_main_#t~pre17_62|)) (bvadd |ULTIMATE.start_main_~#t2~0.offset| (_ bv3 32)) ((_ extract 31 24) |v_ULTIMATE.start_main_#t~pre17_62|))) c_~q~0.base)) (.cse1 (bvmul c_~q_front~0 (_ bv4 32)))) (concat (concat (concat (select .cse0 (bvadd .cse1 (_ bv3 32) c_~q~0.offset)) (select .cse0 (bvadd .cse1 (_ bv2 32) c_~q~0.offset))) (select .cse0 (bvadd .cse1 (_ bv1 32) c_~q~0.offset))) (select .cse0 (bvadd .cse1 c_~q~0.offset)))) (_ bv0 32)))) is different from false [2021-10-07 16:28:19,716 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 16:28:19,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203725667728 treesize of output 194330426781 Received shutdown request... [2021-10-07 16:39:49,419 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:39:49,419 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:39:49,484 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:39:49,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 16:39:49,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:39:49,698 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2021-10-07 16:39:49,700 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 16:39:49,701 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 16:39:49,701 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:39:49,701 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:39:49,701 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:39:49,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:39:49,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:39:49,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:39:49,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:39:49,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:39:49,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:39:49,703 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:39:49,703 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:39:49,703 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:39:49,703 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 16:39:49,703 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 16:39:49,704 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:39:49,704 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:39:49,704 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:39:49,704 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 16:39:49,704 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 16:39:49,705 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:39:49,705 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:39:49,705 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:39:49,705 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:39:49,714 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:39:49,714 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:39:49,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:39:49 BasicIcfg [2021-10-07 16:39:49,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:39:49,717 INFO L168 Benchmark]: Toolchain (without parser) took 853568.20 ms. Allocated memory was 156.2 MB in the beginning and 493.9 MB in the end (delta: 337.6 MB). Free memory was 131.4 MB in the beginning and 447.7 MB in the end (delta: -316.3 MB). Peak memory consumption was 312.5 MB. Max. memory is 8.0 GB. [2021-10-07 16:39:49,718 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 156.2 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:39:49,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.33 ms. Allocated memory is still 156.2 MB. Free memory was 131.0 MB in the beginning and 117.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-07 16:39:49,719 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.95 ms. Allocated memory is still 156.2 MB. Free memory was 117.9 MB in the beginning and 115.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:39:49,719 INFO L168 Benchmark]: Boogie Preprocessor took 92.53 ms. Allocated memory is still 156.2 MB. Free memory was 115.9 MB in the beginning and 114.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:39:49,720 INFO L168 Benchmark]: RCFGBuilder took 1546.15 ms. Allocated memory is still 156.2 MB. Free memory was 114.2 MB in the beginning and 119.1 MB in the end (delta: -4.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2021-10-07 16:39:49,720 INFO L168 Benchmark]: TraceAbstraction took 851373.31 ms. Allocated memory was 156.2 MB in the beginning and 493.9 MB in the end (delta: 337.6 MB). Free memory was 118.5 MB in the beginning and 447.7 MB in the end (delta: -329.2 MB). Peak memory consumption was 299.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:39:49,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 156.2 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 441.33 ms. Allocated memory is still 156.2 MB. Free memory was 131.0 MB in the beginning and 117.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 99.95 ms. Allocated memory is still 156.2 MB. Free memory was 117.9 MB in the beginning and 115.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.53 ms. Allocated memory is still 156.2 MB. Free memory was 115.9 MB in the beginning and 114.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1546.15 ms. Allocated memory is still 156.2 MB. Free memory was 114.2 MB in the beginning and 119.1 MB in the end (delta: -4.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 851373.31 ms. Allocated memory was 156.2 MB in the beginning and 493.9 MB in the end (delta: 337.6 MB). Free memory was 118.5 MB in the beginning and 447.7 MB in the end (delta: -329.2 MB). Peak memory consumption was 299.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21283.3ms, 143 PlacesBefore, 41 PlacesAfterwards, 147 TransitionsBefore, 37 TransitionsAfterwards, 1198 CoEnabledTransitionPairs, 7 FixpointIterations, 97 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 159 TotalNumberOfCompositions, 1482 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1335, positive: 1316, positive conditional: 0, positive unconditional: 1316, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 672, positive: 666, positive conditional: 0, positive unconditional: 666, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 672, positive: 662, positive conditional: 0, positive unconditional: 662, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 418, positive: 122, positive conditional: 0, positive unconditional: 122, negative: 296, negative conditional: 0, negative unconditional: 296, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1335, positive: 650, positive conditional: 0, positive unconditional: 650, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 672, unknown conditional: 0, unknown unconditional: 672] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 167 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 851209.5ms, OverallIterations: 19, TraceHistogramMax: 14, EmptinessCheckTime: 28.6ms, AutomataDifference: 78377.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21356.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 412 SDtfs, 5776 SDslu, 2462 SDs, 0 SdLazy, 3511 SolverSat, 134 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18477.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 290 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 67800.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=0, InterpolantAutomatonStates: 142, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 182.0ms AutomataMinimizationTime, 18 MinimizatonAttempts, 2871 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 164.5ms SsaConstructionTime, 1045.4ms SatisfiabilityAnalysisTime, 46105.6ms InterpolantComputationTime, 146 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 256 ConstructedInterpolants, 42 QuantifiedInterpolants, 5907 SizeOfPredicates, 150 NumberOfNonLiveVariables, 1342 ConjunctsInSsa, 210 ConjunctsInUnsatCore, 36 InterpolantComputations, 24 PerfectInterpolantSequences, 26/294 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown