./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0 --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 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 14:20:18,137 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 14:20:18,217 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-11-02 14:20:18,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 14:20:18,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 14:20:18,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 14:20:18,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 14:20:18,270 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 14:20:18,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 14:20:18,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 14:20:18,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 14:20:18,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 14:20:18,276 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 14:20:18,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 14:20:18,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 14:20:18,279 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 14:20:18,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 14:20:18,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 14:20:18,280 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 14:20:18,281 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 14:20:18,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 14:20:18,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 14:20:18,286 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 14:20:18,286 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 14:20:18,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 14:20:18,287 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 14:20:18,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 14:20:18,287 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 14:20:18,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 14:20:18,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 14:20:18,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 14:20:18,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 14:20:18,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 14:20:18,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 14:20:18,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-02 14:20:18,294 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-11-02 14:20:18,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 14:20:18,295 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 14:20:18,295 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-02 14:20:18,295 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-02 14:20:18,297 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-02 14:20:18,297 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_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 [2024-11-02 14:20:18,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 14:20:18,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 14:20:18,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 14:20:18,651 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 14:20:18,652 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 14:20:18,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c Unable to find full path for "g++" [2024-11-02 14:20:21,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 14:20:21,370 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 14:20:21,371 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-02 14:20:21,385 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/data/5352b72f3/0b65039f46fa4dd1a9e8f31340ab6e5c/FLAG011efd9ab [2024-11-02 14:20:21,408 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/data/5352b72f3/0b65039f46fa4dd1a9e8f31340ab6e5c [2024-11-02 14:20:21,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 14:20:21,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 14:20:21,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 14:20:21,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 14:20:21,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 14:20:21,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:20:21" (1/1) ... [2024-11-02 14:20:21,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@687d025f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:20:21, skipping insertion in model container [2024-11-02 14:20:21,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:20:21" (1/1) ... [2024-11-02 14:20:21,459 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 14:20:21,734 WARN L251 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_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2559,2572] [2024-11-02 14:20:21,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 14:20:21,750 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 14:20:21,780 WARN L251 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_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2559,2572] [2024-11-02 14:20:21,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 14:20:21,807 INFO L204 MainTranslator]: Completed translation [2024-11-02 14:20:21,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:20:21 WrapperNode [2024-11-02 14:20:21,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 14:20:21,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 14:20:21,809 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 14:20:21,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 14:20:21,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:20:21" (1/1) ... [2024-11-02 14:20:21,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:20:21" (1/1) ... [2024-11-02 14:20:21,855 INFO L138 Inliner]: procedures = 22, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 101 [2024-11-02 14:20:21,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 14:20:21,858 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 14:20:21,858 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 14:20:21,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 14:20:21,868 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:20:21" (1/1) ... [2024-11-02 14:20:21,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:20:21" (1/1) ... [2024-11-02 14:20:21,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:20:21" (1/1) ... [2024-11-02 14:20:21,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:20:21" (1/1) ... [2024-11-02 14:20:21,882 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:20:21" (1/1) ... [2024-11-02 14:20:21,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:20:21" (1/1) ... [2024-11-02 14:20:21,894 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:20:21" (1/1) ... [2024-11-02 14:20:21,896 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:20:21" (1/1) ... [2024-11-02 14:20:21,898 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 14:20:21,900 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 14:20:21,900 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 14:20:21,900 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 14:20:21,901 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:20:21" (1/1) ... [2024-11-02 14:20:21,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 14:20:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 [2024-11-02 14:20:21,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 14:20:21,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 14:20:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 14:20:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-02 14:20:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-02 14:20:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-02 14:20:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-02 14:20:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-02 14:20:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-02 14:20:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-02 14:20:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-02 14:20:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 14:20:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-02 14:20:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-02 14:20:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 14:20:21,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 14:20:21,992 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 14:20:22,117 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 14:20:22,120 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 14:20:22,411 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 14:20:22,411 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 14:20:22,630 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 14:20:22,630 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-02 14:20:22,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:20:22 BoogieIcfgContainer [2024-11-02 14:20:22,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 14:20:22,635 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 14:20:22,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 14:20:22,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 14:20:22,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 02:20:21" (1/3) ... [2024-11-02 14:20:22,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796d8bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:20:22, skipping insertion in model container [2024-11-02 14:20:22,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:20:21" (2/3) ... [2024-11-02 14:20:22,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796d8bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:20:22, skipping insertion in model container [2024-11-02 14:20:22,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:20:22" (3/3) ... [2024-11-02 14:20:22,645 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-11-02 14:20:22,667 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 14:20:22,667 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 14:20:22,668 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 14:20:22,771 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-02 14:20:22,890 INFO L107 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 14:20:22,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-11-02 14:20:22,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 [2024-11-02 14:20:22,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-11-02 14:20:22,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-11-02 14:20:22,934 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-02 14:20:22,950 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-11-02 14:20:22,957 INFO L333 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, 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;@484a1fc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 14:20:22,958 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-02 14:20:24,159 INFO L396 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)] === [2024-11-02 14:20:24,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 14:20:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1982951018, now seen corresponding path program 1 times [2024-11-02 14:20:24,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-02 14:20:24,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375059522] [2024-11-02 14:20:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 14:20:24,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 14:20:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 14:20:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 14:20:25,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-02 14:20:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375059522] [2024-11-02 14:20:25,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375059522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 14:20:25,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962432328] [2024-11-02 14:20:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 14:20:25,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 14:20:25,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 [2024-11-02 14:20:25,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 14:20:25,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 14:20:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 14:20:25,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-02 14:20:25,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 14:20:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 14:20:25,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 14:20:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-02 14:20:25,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962432328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 14:20:25,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 14:20:25,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 6] total 17 [2024-11-02 14:20:25,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874246575] [2024-11-02 14:20:25,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 14:20:25,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-02 14:20:25,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-02 14:20:25,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-02 14:20:25,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-02 14:20:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 14:20:25,769 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-02 14:20:25,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 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) [2024-11-02 14:20:25,771 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-02 14:20:26,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-02 14:20:26,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 14:20:26,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 14:20:26,965 INFO L396 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)] === [2024-11-02 14:20:26,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 14:20:26,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1926328923, now seen corresponding path program 2 times [2024-11-02 14:20:26,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-02 14:20:26,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531452657] [2024-11-02 14:20:26,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 14:20:26,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 14:20:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 14:20:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 83 proven. 56 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-02 14:20:27,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-02 14:20:27,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531452657] [2024-11-02 14:20:27,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531452657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 14:20:27,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995735431] [2024-11-02 14:20:27,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-02 14:20:27,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 14:20:27,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 [2024-11-02 14:20:27,344 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 14:20:27,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 14:20:27,466 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-02 14:20:27,466 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 14:20:27,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-02 14:20:27,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 14:20:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 83 proven. 104 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-02 14:20:27,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 14:20:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 83 proven. 16 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-02 14:20:28,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995735431] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 14:20:28,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 14:20:28,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 6] total 19 [2024-11-02 14:20:28,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931940388] [2024-11-02 14:20:28,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 14:20:28,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-02 14:20:28,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-02 14:20:28,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-02 14:20:28,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-11-02 14:20:28,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 14:20:28,167 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-02 14:20:28,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 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) [2024-11-02 14:20:28,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2024-11-02 14:20:28,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-02 14:20:29,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-02 14:20:29,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-02 14:20:29,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 14:20:29,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 14:20:29,772 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-02 14:20:29,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 14:20:29,773 INFO L85 PathProgramCache]: Analyzing trace with hash -442284837, now seen corresponding path program 3 times [2024-11-02 14:20:29,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-02 14:20:29,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942481710] [2024-11-02 14:20:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 14:20:29,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 14:20:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 14:20:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 91 proven. 150 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-02 14:20:30,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-02 14:20:30,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942481710] [2024-11-02 14:20:30,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942481710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 14:20:30,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843579478] [2024-11-02 14:20:30,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 14:20:30,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 14:20:30,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 [2024-11-02 14:20:30,367 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 14:20:30,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 14:20:30,489 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-02 14:20:30,490 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 14:20:30,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-02 14:20:30,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 14:20:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 75 proven. 278 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 14:20:31,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 14:20:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 95 proven. 88 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-02 14:20:31,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843579478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 14:20:31,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 14:20:31,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 7] total 24 [2024-11-02 14:20:31,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853497867] [2024-11-02 14:20:31,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 14:20:31,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-02 14:20:31,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-02 14:20:31,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-02 14:20:31,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2024-11-02 14:20:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 14:20:31,358 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-02 14:20:31,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.0) internal successors, (168), 24 states have internal predecessors, (168), 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) [2024-11-02 14:20:31,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2024-11-02 14:20:31,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-11-02 14:20:31,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-02 14:20:32,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-02 14:20:32,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-02 14:20:32,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-02 14:20:33,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 14:20:33,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 14:20:33,185 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-02 14:20:33,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 14:20:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1241482816, now seen corresponding path program 4 times [2024-11-02 14:20:33,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-02 14:20:33,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379084540] [2024-11-02 14:20:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 14:20:33,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 14:20:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 14:20:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-02 14:20:34,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-02 14:20:34,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379084540] [2024-11-02 14:20:34,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379084540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 14:20:34,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624307757] [2024-11-02 14:20:34,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-02 14:20:34,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 14:20:34,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 [2024-11-02 14:20:34,458 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 14:20:34,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 14:20:34,584 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-02 14:20:34,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 14:20:34,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-02 14:20:34,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 14:20:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 4 proven. 230 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-02 14:20:35,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 14:20:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 2 proven. 230 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-02 14:20:36,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624307757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 14:20:36,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 14:20:36,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 24 [2024-11-02 14:20:36,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851799225] [2024-11-02 14:20:36,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 14:20:36,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-02 14:20:36,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-02 14:20:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-02 14:20:36,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2024-11-02 14:20:36,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 14:20:36,639 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-02 14:20:36,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.4) internal successors, (160), 24 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 14:20:36,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2024-11-02 14:20:36,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-11-02 14:20:36,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2024-11-02 14:20:36,641 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-02 14:20:37,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-02 14:20:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-02 14:20:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-02 14:20:37,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 14:20:37,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 14:20:37,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 14:20:37,338 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-02 14:20:37,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 14:20:37,338 INFO L85 PathProgramCache]: Analyzing trace with hash -680718848, now seen corresponding path program 5 times [2024-11-02 14:20:37,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-02 14:20:37,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739134669] [2024-11-02 14:20:37,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 14:20:37,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 14:20:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 14:20:38,005 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 46 proven. 110 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2024-11-02 14:20:38,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-02 14:20:38,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739134669] [2024-11-02 14:20:38,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739134669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 14:20:38,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375052403] [2024-11-02 14:20:38,008 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-02 14:20:38,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 14:20:38,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 [2024-11-02 14:20:38,010 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 14:20:38,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 14:20:38,154 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-02 14:20:38,154 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 14:20:38,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-02 14:20:38,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 14:20:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 67 proven. 683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 14:20:38,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 14:20:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 277 proven. 229 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-02 14:20:39,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375052403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 14:20:39,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 14:20:39,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 24, 11] total 39 [2024-11-02 14:20:39,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886193284] [2024-11-02 14:20:39,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 14:20:39,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-02 14:20:39,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-02 14:20:39,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-02 14:20:39,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1263, Unknown=0, NotChecked=0, Total=1482 [2024-11-02 14:20:39,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 14:20:39,468 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-02 14:20:39,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.0) internal successors, (273), 39 states have internal predecessors, (273), 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) [2024-11-02 14:20:39,469 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2024-11-02 14:20:39,469 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-11-02 14:20:39,469 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2024-11-02 14:20:39,469 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-11-02 14:20:39,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-02 14:20:45,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-02 14:20:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-02 14:20:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-02 14:20:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 14:20:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2024-11-02 14:20:45,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-02 14:20:45,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 14:20:45,613 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-02 14:20:45,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 14:20:45,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1856416475, now seen corresponding path program 6 times [2024-11-02 14:20:45,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-02 14:20:45,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669888445] [2024-11-02 14:20:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 14:20:45,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 14:20:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 14:20:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 294 proven. 508 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-02 14:20:46,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-02 14:20:46,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669888445] [2024-11-02 14:20:46,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669888445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 14:20:46,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568859416] [2024-11-02 14:20:46,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-02 14:20:46,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 14:20:46,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 [2024-11-02 14:20:46,412 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 14:20:46,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab2d01d-318c-4bcf-ab73-c1e20f9704bc/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-02 14:20:46,581 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-11-02 14:20:46,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 14:20:46,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-02 14:20:46,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 14:20:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 84 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 14:20:47,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 14:20:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 327 proven. 393 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-11-02 14:20:48,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568859416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 14:20:48,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 14:20:48,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 27, 12] total 39 [2024-11-02 14:20:48,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697635171] [2024-11-02 14:20:48,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 14:20:48,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-02 14:20:48,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-02 14:20:48,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-02 14:20:48,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1279, Unknown=0, NotChecked=0, Total=1482 [2024-11-02 14:20:48,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 14:20:48,136 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-02 14:20:48,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.17948717948718) internal successors, (280), 39 states have internal predecessors, (280), 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) [2024-11-02 14:20:48,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2024-11-02 14:20:48,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-11-02 14:20:48,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2024-11-02 14:20:48,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-11-02 14:20:48,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 143 states. [2024-11-02 14:20:48,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.