./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh --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 0cfb19cf4d2e91498cc6b9015bdada7a33dfe09887340d8a9d79513b784b8b5a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:26:26,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:26:26,912 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:26:26,918 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:26:26,919 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:26:26,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:26:26,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:26:26,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:26:26,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:26:26,948 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:26:26,948 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:26:26,949 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:26:26,950 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:26:26,950 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:26:26,951 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:26:26,951 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:26:26,952 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:26:26,953 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:26:26,953 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:26:26,954 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:26:26,954 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:26:26,955 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:26:26,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:26:26,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:26:26,957 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:26:26,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:26:26,958 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:26:26,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:26:26,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:26:26,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:26:26,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:26:26,960 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:26:26,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:26:26,961 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:26:26,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:26:26,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:26:26,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:26:26,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:26:26,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:26:26,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:26:26,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:26:26,963 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:26:26,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:26:26,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:26:26,964 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:26:26,964 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:26:26,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:26:26,964 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_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cfb19cf4d2e91498cc6b9015bdada7a33dfe09887340d8a9d79513b784b8b5a [2023-12-02 19:26:27,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:26:27,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:26:27,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:26:27,269 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:26:27,270 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:26:27,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2023-12-02 19:26:30,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:26:30,416 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:26:30,417 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7200db07-e251-46c0-9331-db7702e9afdd/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2023-12-02 19:26:30,424 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh/data/747a40ae9/72d4ba72fe26461e91d8ff759cbec56a/FLAG53d6affc6 [2023-12-02 19:26:30,436 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh/data/747a40ae9/72d4ba72fe26461e91d8ff759cbec56a [2023-12-02 19:26:30,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:26:30,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:26:30,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:26:30,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:26:30,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:26:30,446 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:26:30" (1/1) ... [2023-12-02 19:26:30,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c24659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:30, skipping insertion in model container [2023-12-02 19:26:30,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:26:30" (1/1) ... [2023-12-02 19:26:30,478 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:26:30,629 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_7200db07-e251-46c0-9331-db7702e9afdd/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4478,4491] [2023-12-02 19:26:30,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:26:30,644 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:26:30,670 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_7200db07-e251-46c0-9331-db7702e9afdd/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4478,4491] [2023-12-02 19:26:30,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:26:30,681 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:26:30,681 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:26:30,688 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:26:30,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:30 WrapperNode [2023-12-02 19:26:30,688 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:26:30,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:26:30,689 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:26:30,689 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:26:30,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:30" (1/1) ... [2023-12-02 19:26:30,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:30" (1/1) ... [2023-12-02 19:26:30,734 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 293 [2023-12-02 19:26:30,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:26:30,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:26:30,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:26:30,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:26:30,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:30" (1/1) ... [2023-12-02 19:26:30,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:30" (1/1) ... [2023-12-02 19:26:30,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:30" (1/1) ... [2023-12-02 19:26:30,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:30" (1/1) ... [2023-12-02 19:26:30,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:30" (1/1) ... [2023-12-02 19:26:30,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:30" (1/1) ... [2023-12-02 19:26:30,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:30" (1/1) ... [2023-12-02 19:26:30,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:30" (1/1) ... [2023-12-02 19:26:30,766 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:26:30,767 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:26:30,768 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:26:30,768 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:26:30,769 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:30" (1/1) ... [2023-12-02 19:26:30,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:26:30,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:26:30,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:26:30,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7200db07-e251-46c0-9331-db7702e9afdd/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:26:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:26:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:26:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:26:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:26:30,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 19:26:30,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 19:26:30,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 19:26:30,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 19:26:30,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-02 19:26:30,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-02 19:26:30,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-12-02 19:26:30,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-12-02 19:26:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:26:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-12-02 19:26:30,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-12-02 19:26:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-12-02 19:26:30,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-12-02 19:26:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 19:26:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 19:26:30,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:26:30,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:26:30,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:26:30,843 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 19:26:30,962 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:26:30,965 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:26:31,323 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:26:31,709 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:26:31,709 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 19:26:31,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:26:31 BoogieIcfgContainer [2023-12-02 19:26:31,710 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:26:31,713 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:26:31,713 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:26:31,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:26:31,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:26:30" (1/3) ... [2023-12-02 19:26:31,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f0dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:26:31, skipping insertion in model container [2023-12-02 19:26:31,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:30" (2/3) ... [2023-12-02 19:26:31,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f0dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:26:31, skipping insertion in model container [2023-12-02 19:26:31,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:26:31" (3/3) ... [2023-12-02 19:26:31,721 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2023-12-02 19:26:31,731 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 19:26:31,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:26:31,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:26:31,744 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 19:26:31,822 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-12-02 19:26:31,860 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 70 transitions, 182 flow [2023-12-02 19:26:43,949 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 352947 states, 352946 states have (on average 5.539700124098304) internal successors, (1955215), 352946 states have internal predecessors, (1955215), 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) [2023-12-02 19:26:43,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:26:43,978 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;@4c4b6d19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:26:43,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-02 19:26:44,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 352947 states, 352946 states have (on average 5.539700124098304) internal successors, (1955215), 352946 states have internal predecessors, (1955215), 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) [2023-12-02 19:26:46,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 19:26:46,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:26:46,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:26:46,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-02 19:26:46,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:26:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2115590721, now seen corresponding path program 1 times [2023-12-02 19:26:46,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:26:46,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409983314] [2023-12-02 19:26:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:26:46,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:26:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:26:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:26:47,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:26:47,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409983314] [2023-12-02 19:26:47,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409983314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:26:47,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:26:47,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:26:47,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63662395] [2023-12-02 19:26:47,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:26:47,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:26:47,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:26:47,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:26:47,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:26:48,451 INFO L87 Difference]: Start difference. First operand has 352947 states, 352946 states have (on average 5.539700124098304) internal successors, (1955215), 352946 states have internal predecessors, (1955215), 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 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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) [2023-12-02 19:27:02,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:27:02,450 INFO L93 Difference]: Finished difference Result 882044 states and 4749644 transitions. [2023-12-02 19:27:02,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:27:02,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 63 [2023-12-02 19:27:02,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:27:11,632 INFO L225 Difference]: With dead ends: 882044 [2023-12-02 19:27:11,633 INFO L226 Difference]: Without dead ends: 882044 [2023-12-02 19:27:11,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:27:11,639 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 105 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:27:11,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 82 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:27:14,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882044 states. [2023-12-02 19:27:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882044 to 537371. [2023-12-02 19:27:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537371 states, 537370 states have (on average 5.428488750767627) internal successors, (2917107), 537370 states have internal predecessors, (2917107), 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) [2023-12-02 19:27:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537371 states to 537371 states and 2917107 transitions. [2023-12-02 19:27:50,707 INFO L78 Accepts]: Start accepts. Automaton has 537371 states and 2917107 transitions. Word has length 63 [2023-12-02 19:27:50,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:27:50,708 INFO L495 AbstractCegarLoop]: Abstraction has 537371 states and 2917107 transitions. [2023-12-02 19:27:50,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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) [2023-12-02 19:27:50,709 INFO L276 IsEmpty]: Start isEmpty. Operand 537371 states and 2917107 transitions. [2023-12-02 19:27:53,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 19:27:53,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:27:53,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:27:53,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:27:53,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-02 19:27:53,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:27:53,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1529057605, now seen corresponding path program 2 times [2023-12-02 19:27:53,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:27:53,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766316937] [2023-12-02 19:27:53,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:27:53,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:27:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:27:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:27:54,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:27:54,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766316937] [2023-12-02 19:27:54,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766316937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:27:54,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:27:54,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:27:54,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3715389] [2023-12-02 19:27:54,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:27:54,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:27:54,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:27:54,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:27:54,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:27:54,731 INFO L87 Difference]: Start difference. First operand 537371 states and 2917107 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 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) [2023-12-02 19:28:05,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:28:05,156 INFO L93 Difference]: Finished difference Result 798132 states and 4303890 transitions. [2023-12-02 19:28:05,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:28:05,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2023-12-02 19:28:05,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:28:10,673 INFO L225 Difference]: With dead ends: 798132 [2023-12-02 19:28:10,673 INFO L226 Difference]: Without dead ends: 547673 [2023-12-02 19:28:10,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:28:10,674 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 130 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:28:10,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 49 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:28:12,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547673 states.