./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp2x9.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_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af523f24b0126267447f5590b01302c6de6f439c37a01df1dbf66192a849a6d6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:10:02,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:10:02,701 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-24 22:10:02,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:10:02,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:10:02,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:10:02,750 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:10:02,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:10:02,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:10:02,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:10:02,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:10:02,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:10:02,762 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:10:02,764 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:10:02,765 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:10:02,765 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:10:02,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:10:02,766 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:10:02,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:10:02,767 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:10:02,767 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:10:02,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:10:02,768 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:10:02,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:10:02,769 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:10:02,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:10:02,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:10:02,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:10:02,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:10:02,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 22:10:02,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:10:02,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:10:02,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:10:02,774 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:10:02,774 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-24 22:10:02,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:10:02,775 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:10:02,775 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-24 22:10:02,775 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:10:02,776 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-24 22:10:02,776 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-24 22:10:02,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af523f24b0126267447f5590b01302c6de6f439c37a01df1dbf66192a849a6d6 [2023-11-24 22:10:03,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:10:03,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:10:03,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:10:03,158 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:10:03,159 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:10:03,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2023-11-24 22:10:06,268 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:10:06,512 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:10:06,512 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2023-11-24 22:10:06,524 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/data/1dc2f78ff/f9039e2a9d694869a797c122118ca2e9/FLAGc12e22928 [2023-11-24 22:10:06,545 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/data/1dc2f78ff/f9039e2a9d694869a797c122118ca2e9 [2023-11-24 22:10:06,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:10:06,555 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:10:06,556 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:10:06,556 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:10:06,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:10:06,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:10:06" (1/1) ... [2023-11-24 22:10:06,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d8c130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:06, skipping insertion in model container [2023-11-24 22:10:06,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:10:06" (1/1) ... [2023-11-24 22:10:06,608 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:10:06,813 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_775e1b47-2369-4b53-9be7-be8539c7e75c/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2721,2734] [2023-11-24 22:10:06,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:10:06,830 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:10:06,857 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_775e1b47-2369-4b53-9be7-be8539c7e75c/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2721,2734] [2023-11-24 22:10:06,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:10:06,876 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:10:06,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:06 WrapperNode [2023-11-24 22:10:06,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:10:06,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:10:06,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:10:06,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:10:06,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:06" (1/1) ... [2023-11-24 22:10:06,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:06" (1/1) ... [2023-11-24 22:10:06,928 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-11-24 22:10:06,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:10:06,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:10:06,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:10:06,930 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:10:06,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:06" (1/1) ... [2023-11-24 22:10:06,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:06" (1/1) ... [2023-11-24 22:10:06,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:06" (1/1) ... [2023-11-24 22:10:06,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:06" (1/1) ... [2023-11-24 22:10:06,952 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:06" (1/1) ... [2023-11-24 22:10:06,956 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:06" (1/1) ... [2023-11-24 22:10:06,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:06" (1/1) ... [2023-11-24 22:10:06,960 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:06" (1/1) ... [2023-11-24 22:10:06,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:10:06,965 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:10:06,965 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:10:06,965 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:10:06,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:06" (1/1) ... [2023-11-24 22:10:06,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 22:10:06,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:10:07,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 22:10:07,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 22:10:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:10:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 22:10:07,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 22:10:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 22:10:07,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 22:10:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 22:10:07,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 22:10:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-24 22:10:07,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-24 22:10:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 22:10:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:10:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 22:10:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:10:07,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:10:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 22:10:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:10:07,052 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 22:10:07,155 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:10:07,157 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:10:07,526 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:10:07,881 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:10:07,882 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-24 22:10:07,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:10:07 BoogieIcfgContainer [2023-11-24 22:10:07,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:10:07,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:10:07,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:10:07,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:10:07,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:10:06" (1/3) ... [2023-11-24 22:10:07,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61774d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:10:07, skipping insertion in model container [2023-11-24 22:10:07,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:06" (2/3) ... [2023-11-24 22:10:07,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61774d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:10:07, skipping insertion in model container [2023-11-24 22:10:07,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:10:07" (3/3) ... [2023-11-24 22:10:07,892 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2023-11-24 22:10:07,899 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 22:10:07,907 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:10:07,908 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 22:10:07,908 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:10:07,966 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-24 22:10:08,013 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:10:08,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:10:08,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:10:08,019 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:10:08,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-24 22:10:08,086 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:10:08,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:10:08,108 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=PARTIAL_ORDER_FA, 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;@c717db0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:10:08,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:10:08,284 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 2 more)] === [2023-11-24 22:10:08,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:10:08,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1801147221, now seen corresponding path program 1 times [2023-11-24 22:10:08,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:10:08,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207099130] [2023-11-24 22:10:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:08,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:10:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 22:10:08,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:10:08,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207099130] [2023-11-24 22:10:08,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207099130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:10:08,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:10:08,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:10:08,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066445385] [2023-11-24 22:10:08,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:10:08,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:10:08,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:10:09,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:10:09,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:10:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:09,037 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:10:09,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-11-24 22:10:09,039 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:09,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:10:09,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:10:09,239 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 2 more)] === [2023-11-24 22:10:09,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:10:09,240 INFO L85 PathProgramCache]: Analyzing trace with hash -139269425, now seen corresponding path program 1 times [2023-11-24 22:10:09,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:10:09,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121329737] [2023-11-24 22:10:09,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:09,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:10:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 22:10:09,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:10:09,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121329737] [2023-11-24 22:10:09,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121329737] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:10:09,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926723645] [2023-11-24 22:10:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:09,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:10:09,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:10:09,886 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:10:09,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_775e1b47-2369-4b53-9be7-be8539c7e75c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process