./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/mult-comm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/mult-comm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf --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 de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 17:18:56,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 17:18:56,507 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-21 17:18:56,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 17:18:56,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 17:18:56,562 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 17:18:56,563 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 17:18:56,564 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 17:18:56,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 17:18:56,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 17:18:56,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 17:18:56,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 17:18:56,574 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 17:18:56,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 17:18:56,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 17:18:56,583 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 17:18:56,584 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 17:18:56,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 17:18:56,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 17:18:56,585 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 17:18:56,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 17:18:56,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 17:18:56,587 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 17:18:56,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 17:18:56,588 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 17:18:56,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 17:18:56,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 17:18:56,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 17:18:56,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 17:18:56,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:18:56,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 17:18:56,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 17:18:56,593 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 17:18:56,593 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 17:18:56,594 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-21 17:18:56,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 17:18:56,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 17:18:56,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-21 17:18:56,595 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 17:18:56,596 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-21 17:18:56,596 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-21 17:18:56,597 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_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 [2023-11-21 17:18:56,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 17:18:56,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 17:18:56,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 17:18:56,939 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 17:18:56,940 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 17:18:56,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/../../sv-benchmarks/c/weaver/mult-comm.wvr.c [2023-11-21 17:19:00,110 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 17:19:00,381 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 17:19:00,382 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/sv-benchmarks/c/weaver/mult-comm.wvr.c [2023-11-21 17:19:00,394 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/data/9f9c1c4e9/c0bea23dfd354c38a2a41de4806a50a8/FLAG26231f2cf [2023-11-21 17:19:00,412 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/data/9f9c1c4e9/c0bea23dfd354c38a2a41de4806a50a8 [2023-11-21 17:19:00,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 17:19:00,419 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 17:19:00,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 17:19:00,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 17:19:00,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 17:19:00,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:19:00" (1/1) ... [2023-11-21 17:19:00,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5485b13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00, skipping insertion in model container [2023-11-21 17:19:00,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:19:00" (1/1) ... [2023-11-21 17:19:00,463 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 17:19:00,661 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_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/sv-benchmarks/c/weaver/mult-comm.wvr.c[1936,1949] [2023-11-21 17:19:00,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:19:00,679 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 17:19:00,702 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_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/sv-benchmarks/c/weaver/mult-comm.wvr.c[1936,1949] [2023-11-21 17:19:00,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:19:00,721 INFO L206 MainTranslator]: Completed translation [2023-11-21 17:19:00,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00 WrapperNode [2023-11-21 17:19:00,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 17:19:00,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 17:19:00,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 17:19:00,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 17:19:00,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2023-11-21 17:19:00,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2023-11-21 17:19:00,760 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-11-21 17:19:00,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 17:19:00,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 17:19:00,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 17:19:00,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 17:19:00,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2023-11-21 17:19:00,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2023-11-21 17:19:00,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2023-11-21 17:19:00,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2023-11-21 17:19:00,779 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2023-11-21 17:19:00,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2023-11-21 17:19:00,785 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2023-11-21 17:19:00,786 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2023-11-21 17:19:00,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 17:19:00,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 17:19:00,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 17:19:00,790 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 17:19:00,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (1/1) ... [2023-11-21 17:19:00,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:19:00,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:00,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 17:19:00,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 17:19:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 17:19:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 17:19:00,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 17:19:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 17:19:00,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 17:19:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 17:19:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 17:19:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 17:19:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 17:19:00,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 17:19:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 17:19:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 17:19:00,883 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 17:19:00,983 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 17:19:00,986 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 17:19:01,181 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 17:19:01,448 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 17:19:01,449 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 17:19:01,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:19:01 BoogieIcfgContainer [2023-11-21 17:19:01,451 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 17:19:01,454 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 17:19:01,455 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 17:19:01,458 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 17:19:01,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:19:00" (1/3) ... [2023-11-21 17:19:01,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d348dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:19:01, skipping insertion in model container [2023-11-21 17:19:01,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:00" (2/3) ... [2023-11-21 17:19:01,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d348dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:19:01, skipping insertion in model container [2023-11-21 17:19:01,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:19:01" (3/3) ... [2023-11-21 17:19:01,462 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2023-11-21 17:19:01,472 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 17:19:01,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 17:19:01,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 17:19:01,482 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 17:19:01,530 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 17:19:01,590 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:19:01,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-21 17:19:01,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:01,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-21 17:19:01,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-21 17:19:01,636 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-21 17:19:01,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-21 17:19:01,659 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;@33c8f3cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:19:01,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-21 17:19:01,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-21 17:19:01,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:01,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1161666704, now seen corresponding path program 1 times [2023-11-21 17:19:01,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:01,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654924924] [2023-11-21 17:19:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:01,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:02,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:02,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654924924] [2023-11-21 17:19:02,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654924924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 17:19:02,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504317789] [2023-11-21 17:19:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:02,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:02,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:02,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 17:19:02,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 17:19:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:03,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 17:19:03,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:19:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:03,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:19:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:03,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504317789] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:19:03,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 17:19:03,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 12 [2023-11-21 17:19:03,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365441557] [2023-11-21 17:19:03,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 17:19:03,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 17:19:03,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:03,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 17:19:03,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2023-11-21 17:19:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:03,733 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:03,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 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) [2023-11-21 17:19:03,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:03,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:19:03,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 17:19:04,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-21 17:19:04,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-21 17:19:04,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:04,090 INFO L85 PathProgramCache]: Analyzing trace with hash -8066637, now seen corresponding path program 1 times [2023-11-21 17:19:04,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:04,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876447212] [2023-11-21 17:19:04,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:04,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:05,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:05,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876447212] [2023-11-21 17:19:05,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876447212] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 17:19:05,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185856674] [2023-11-21 17:19:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:05,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:05,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:05,888 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 17:19:05,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 17:19:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:06,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-21 17:19:06,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:19:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:06,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:19:09,465 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ 2 c_thread1Thread1of1ForFork0_~i~0) 4294967296)) (.cse2 (* (div c_~x_2~0 4294967296) 4294967296)) (.cse3 (mod (+ c_thread2Thread1of1ForFork1_~i~1 1) 4294967296)) (.cse4 (+ (mod c_thread2Thread1of1ForFork1_~i~1 4294967296) 1)) (.cse7 (mod c_~x_2~0 4294967296)) (.cse6 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296))) (and (forall ((v_z_10 Int)) (or (let ((.cse1 (* v_z_10 2))) (< (+ c_~x_2~0 .cse0 (* (div (+ .cse1 c_~x_1~0) 4294967296) 4294967296)) (+ .cse1 c_~x_1~0 4294967297 .cse2))) (< .cse3 v_z_10) (< v_z_10 .cse4))) (or (forall ((v_z_10 Int)) (or (let ((.cse5 (* v_z_10 2))) (< (+ .cse5 c_~x_1~0 4294967294 .cse2) (+ c_~x_2~0 (* (div (+ .cse5 c_~x_1~0) 4294967296) 4294967296) .cse6))) (< .cse3 v_z_10) (< v_z_10 .cse4))) (< (+ .cse0 .cse7) 4294967296)) (forall ((v_z_10 Int)) (or (< .cse3 v_z_10) (< v_z_10 .cse4) (let ((.cse8 (* v_z_10 2))) (< (+ .cse8 c_~x_1~0 .cse2) (+ c_~x_2~0 2 (* (div (+ .cse8 c_~x_1~0) 4294967296) 4294967296) .cse6))))) (or (forall ((v_z_10 Int)) (or (let ((.cse9 (* v_z_10 2))) (< (+ c_~x_2~0 .cse0 (* (div (+ .cse9 c_~x_1~0) 4294967296) 4294967296)) (+ .cse9 c_~x_1~0 .cse2 1))) (< .cse3 v_z_10) (< v_z_10 .cse4))) (< 4294967294 (+ .cse7 .cse6))))) is different from false [2023-11-21 17:19:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-21 17:19:10,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185856674] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:19:10,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 17:19:10,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-11-21 17:19:10,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243633638] [2023-11-21 17:19:10,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 17:19:10,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-21 17:19:10,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:10,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-21 17:19:10,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=267, Unknown=1, NotChecked=34, Total=380 [2023-11-21 17:19:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:10,028 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:10,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 19 states have internal predecessors, (37), 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) [2023-11-21 17:19:10,029 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:19:10,030 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:19:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 17:19:11,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 17:19:11,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:11,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-21 17:19:11,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:11,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1970899527, now seen corresponding path program 2 times [2023-11-21 17:19:11,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:11,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777219925] [2023-11-21 17:19:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:11,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:14,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:14,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777219925] [2023-11-21 17:19:14,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777219925] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 17:19:14,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186294324] [2023-11-21 17:19:14,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 17:19:14,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:14,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:14,360 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 17:19:14,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 17:19:14,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 17:19:14,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 17:19:14,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-21 17:19:14,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:19:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:15,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:19:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:19,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186294324] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:19:19,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 17:19:19,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 31 [2023-11-21 17:19:19,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748157097] [2023-11-21 17:19:19,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 17:19:19,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-21 17:19:19,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:19,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-21 17:19:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2023-11-21 17:19:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:19,066 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:19,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.53125) internal successors, (49), 31 states have internal predecessors, (49), 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) [2023-11-21 17:19:19,066 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:19:19,066 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-21 17:19:19,066 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:40,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:19:40,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 17:19:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-21 17:19:40,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 17:19:41,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90d8e4e-7e1a-4188-ba80-6eff7efb5dc8/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:41,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-21 17:19:41,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:41,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1116124357, now seen corresponding path program 3 times [2023-11-21 17:19:41,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:41,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816615432] [2023-11-21 17:19:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:41,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat