./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 86978482104e316c202a01b019909b1a7fe566ade6200bbc4193c078d7c086e9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:04:46,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:04:46,577 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:04:46,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:04:46,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:04:46,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:04:46,635 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:04:46,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:04:46,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:04:46,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:04:46,642 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:04:46,643 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:04:46,643 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:04:46,645 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:04:46,646 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:04:46,646 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:04:46,647 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:04:46,647 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:04:46,648 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:04:46,648 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:04:46,650 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:04:46,651 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:04:46,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:04:46,653 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:04:46,653 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:04:46,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:04:46,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:04:46,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:04:46,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:04:46,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:04:46,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:04:46,658 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:04:46,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:04:46,658 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:04:46,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:04:46,659 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:04:46,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:46,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:04:46,660 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:04:46,660 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:04:46,660 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:04:46,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:04:46,661 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:04:46,661 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:04:46,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:04:46,662 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86978482104e316c202a01b019909b1a7fe566ade6200bbc4193c078d7c086e9 [2023-11-19 05:04:46,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:04:46,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:04:46,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:04:46,990 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:04:46,990 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:04:46,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2023-11-19 05:04:50,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:04:50,405 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:04:50,406 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2023-11-19 05:04:50,417 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/data/b0e974602/e07f760403944ce2829d84fd22cc175a/FLAG1154ed07a [2023-11-19 05:04:50,439 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/data/b0e974602/e07f760403944ce2829d84fd22cc175a [2023-11-19 05:04:50,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:04:50,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:04:50,446 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:50,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:04:50,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:04:50,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:50" (1/1) ... [2023-11-19 05:04:50,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5ca5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:50, skipping insertion in model container [2023-11-19 05:04:50,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:50" (1/1) ... [2023-11-19 05:04:50,488 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:04:50,665 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2329,2342] [2023-11-19 05:04:50,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:50,692 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:04:50,714 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2329,2342] [2023-11-19 05:04:50,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:50,735 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:04:50,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:50 WrapperNode [2023-11-19 05:04:50,736 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:50,737 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:50,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:04:50,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:04:50,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:50" (1/1) ... [2023-11-19 05:04:50,755 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:50" (1/1) ... [2023-11-19 05:04:50,787 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 127 [2023-11-19 05:04:50,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:50,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:04:50,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:04:50,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:04:50,798 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:50" (1/1) ... [2023-11-19 05:04:50,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:50" (1/1) ... [2023-11-19 05:04:50,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:50" (1/1) ... [2023-11-19 05:04:50,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:50" (1/1) ... [2023-11-19 05:04:50,808 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:50" (1/1) ... [2023-11-19 05:04:50,811 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:50" (1/1) ... [2023-11-19 05:04:50,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:50" (1/1) ... [2023-11-19 05:04:50,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:50" (1/1) ... [2023-11-19 05:04:50,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:04:50,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:04:50,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:04:50,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:04:50,821 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:50" (1/1) ... [2023-11-19 05:04:50,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:50,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:50,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:04:50,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:04:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:04:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 05:04:50,894 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 05:04:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 05:04:50,894 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 05:04:50,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:04:50,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:04:50,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:04:50,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:04:50,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:04:50,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:04:50,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:04:50,897 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:04:51,005 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:04:51,008 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:04:51,466 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:04:51,481 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:04:51,485 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:04:51,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:51 BoogieIcfgContainer [2023-11-19 05:04:51,494 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:04:51,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:04:51,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:04:51,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:04:51,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:50" (1/3) ... [2023-11-19 05:04:51,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc9b516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:51, skipping insertion in model container [2023-11-19 05:04:51,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:50" (2/3) ... [2023-11-19 05:04:51,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc9b516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:51, skipping insertion in model container [2023-11-19 05:04:51,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:51" (3/3) ... [2023-11-19 05:04:51,508 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2023-11-19 05:04:51,521 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 05:04:51,534 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:04:51,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:04:51,534 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:04:51,669 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 05:04:51,714 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:04:51,730 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 168 transitions, 350 flow [2023-11-19 05:04:51,733 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 168 transitions, 350 flow [2023-11-19 05:04:51,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 168 transitions, 350 flow [2023-11-19 05:04:51,871 INFO L124 PetriNetUnfolderBase]: 11/166 cut-off events. [2023-11-19 05:04:51,872 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 05:04:51,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 166 events. 11/166 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 246 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-19 05:04:51,886 INFO L119 LiptonReduction]: Number of co-enabled transitions 4592 [2023-11-19 05:04:57,433 INFO L134 LiptonReduction]: Checked pairs total: 4490 [2023-11-19 05:04:57,434 INFO L136 LiptonReduction]: Total number of compositions: 207 [2023-11-19 05:04:57,445 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 14 transitions, 42 flow [2023-11-19 05:04:57,460 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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) [2023-11-19 05:04:57,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:04:57,493 INFO L357 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6426fced, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:04:57,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-19 05:04:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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) [2023-11-19 05:04:57,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:04:57,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:57,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:57,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 05:04:57,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1362237321, now seen corresponding path program 1 times [2023-11-19 05:04:57,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:57,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378137069] [2023-11-19 05:04:57,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:57,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:58,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:58,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378137069] [2023-11-19 05:04:58,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378137069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:58,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:58,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:04:58,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193076903] [2023-11-19 05:04:58,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:58,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:04:58,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:58,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:04:58,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:04:58,807 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-19 05:04:58,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:58,958 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2023-11-19 05:04:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:04:58,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-11-19 05:04:58,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:58,968 INFO L225 Difference]: With dead ends: 25 [2023-11-19 05:04:58,968 INFO L226 Difference]: Without dead ends: 18 [2023-11-19 05:04:58,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:04:58,974 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:58,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:58,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-19 05:04:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-19 05:04:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 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) [2023-11-19 05:04:59,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2023-11-19 05:04:59,021 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 11 [2023-11-19 05:04:59,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:59,022 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2023-11-19 05:04:59,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-19 05:04:59,023 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2023-11-19 05:04:59,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:04:59,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:59,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:59,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:04:59,024 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 05:04:59,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:59,025 INFO L85 PathProgramCache]: Analyzing trace with hash 68452083, now seen corresponding path program 2 times [2023-11-19 05:04:59,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:59,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205342825] [2023-11-19 05:04:59,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:59,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:59,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:59,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205342825] [2023-11-19 05:04:59,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205342825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:59,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:59,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:04:59,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058046513] [2023-11-19 05:04:59,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:59,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:04:59,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:59,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:04:59,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:04:59,621 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-19 05:04:59,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:59,712 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2023-11-19 05:04:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:04:59,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-11-19 05:04:59,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:59,714 INFO L225 Difference]: With dead ends: 17 [2023-11-19 05:04:59,714 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:04:59,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:04:59,716 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:59,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:04:59,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:04:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:04:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-11-19 05:04:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:04:59,719 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2023-11-19 05:04:59,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:59,719 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:04:59,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-19 05:04:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:04:59,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:04:59,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-19 05:04:59,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-19 05:04:59,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-19 05:04:59,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:04:59,727 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2023-11-19 05:04:59,730 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 05:04:59,730 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:04:59,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:04:59 BasicIcfg [2023-11-19 05:04:59,734 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:04:59,734 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:04:59,735 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:04:59,735 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:04:59,735 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:51" (3/4) ... [2023-11-19 05:04:59,737 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:04:59,742 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 05:04:59,742 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 05:04:59,747 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-19 05:04:59,747 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 05:04:59,748 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 05:04:59,748 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:04:59,856 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:04:59,857 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:04:59,857 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:04:59,858 INFO L158 Benchmark]: Toolchain (without parser) took 9413.26ms. Allocated memory was 163.6MB in the beginning and 201.3MB in the end (delta: 37.7MB). Free memory was 117.4MB in the beginning and 55.3MB in the end (delta: 62.1MB). Peak memory consumption was 101.8MB. Max. memory is 16.1GB. [2023-11-19 05:04:59,858 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 163.6MB. Free memory was 109.8MB in the beginning and 109.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:04:59,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.51ms. Allocated memory is still 163.6MB. Free memory was 117.4MB in the beginning and 105.5MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:04:59,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.76ms. Allocated memory is still 163.6MB. Free memory was 105.5MB in the beginning and 103.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:04:59,859 INFO L158 Benchmark]: Boogie Preprocessor took 30.01ms. Allocated memory is still 163.6MB. Free memory was 103.4MB in the beginning and 102.6MB in the end (delta: 819.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:04:59,860 INFO L158 Benchmark]: RCFGBuilder took 674.35ms. Allocated memory is still 163.6MB. Free memory was 101.9MB in the beginning and 85.8MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 05:04:59,860 INFO L158 Benchmark]: TraceAbstraction took 8235.39ms. Allocated memory was 163.6MB in the beginning and 201.3MB in the end (delta: 37.7MB). Free memory was 85.2MB in the beginning and 59.5MB in the end (delta: 25.7MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. [2023-11-19 05:04:59,861 INFO L158 Benchmark]: Witness Printer took 122.44ms. Allocated memory is still 201.3MB. Free memory was 59.5MB in the beginning and 55.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:04:59,865 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 163.6MB. Free memory was 109.8MB in the beginning and 109.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.51ms. Allocated memory is still 163.6MB. Free memory was 117.4MB in the beginning and 105.5MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.76ms. Allocated memory is still 163.6MB. Free memory was 105.5MB in the beginning and 103.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.01ms. Allocated memory is still 163.6MB. Free memory was 103.4MB in the beginning and 102.6MB in the end (delta: 819.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 674.35ms. Allocated memory is still 163.6MB. Free memory was 101.9MB in the beginning and 85.8MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8235.39ms. Allocated memory was 163.6MB in the beginning and 201.3MB in the end (delta: 37.7MB). Free memory was 85.2MB in the beginning and 59.5MB in the end (delta: 25.7MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. * Witness Printer took 122.44ms. Allocated memory is still 201.3MB. Free memory was 59.5MB in the beginning and 55.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7s, 164 PlacesBefore, 21 PlacesAfterwards, 168 TransitionsBefore, 14 TransitionsAfterwards, 4592 CoEnabledTransitionPairs, 7 FixpointIterations, 72 TrivialSequentialCompositions, 81 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 36 ConcurrentYvCompositions, 11 ChoiceCompositions, 207 TotalNumberOfCompositions, 4490 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4490, independent: 4490, independent conditional: 0, independent unconditional: 4490, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3706, independent: 3706, independent conditional: 0, independent unconditional: 3706, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3706, independent: 3706, independent conditional: 0, independent unconditional: 3706, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4490, independent: 784, independent conditional: 0, independent unconditional: 784, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 3706, unknown conditional: 0, unknown unconditional: 3706] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 72]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 236 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 8.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 05:04:59,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b6faaf-b000-4dfe-ab64-dca0cce2759c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE