./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco --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 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-11-27 06:20:19,679 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-27 06:20:19,775 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/config/svcomp-Reach-32bit-GemCutter_Default.epf
[2024-11-27 06:20:19,781 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-27 06:20:19,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-27 06:20:19,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-27 06:20:19,819 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-27 06:20:19,819 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-27 06:20:19,819 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-27 06:20:19,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-27 06:20:19,820 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-27 06:20:19,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-27 06:20:19,820 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-27 06:20:19,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-27 06:20:19,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-27 06:20:19,820 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-27 06:20:19,820 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-27 06:20:19,820 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-27 06:20:19,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-27 06:20:19,820 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-27 06:20:19,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-27 06:20:19,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-27 06:20:19,821 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-27 06:20:19,821 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-27 06:20:19,821 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-27 06:20:19,821 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-27 06:20:19,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-27 06:20:19,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-27 06:20:19,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-27 06:20:19,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-27 06:20:19,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2024-11-27 06:20:19,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-27 06:20:19,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-27 06:20:19,824 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-27 06:20:19,824 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT
[2024-11-27 06:20:19,824 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-27 06:20:19,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-27 06:20:19,824 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP
[2024-11-27 06:20:19,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-27 06:20:19,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-27 06:20:19,825 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2024-11-27 06:20:19,825 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE
[2024-11-27 06:20:19,825 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER
[2024-11-27 06:20:19,825 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
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_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco
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 -> 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d
[2024-11-27 06:20:20,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-27 06:20:20,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-27 06:20:20,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-27 06:20:20,134 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-27 06:20:20,134 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-27 06:20:20,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i
[2024-11-27 06:20:23,428 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/data/42a78499a/c204cdcc33c64687b756decfcabda0cc/FLAGc0427ede5
[2024-11-27 06:20:23,813 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-27 06:20:23,814 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/sv-benchmarks/c/pthread-theta/unwind2-nondet.i
[2024-11-27 06:20:23,832 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/data/42a78499a/c204cdcc33c64687b756decfcabda0cc/FLAGc0427ede5
[2024-11-27 06:20:23,863 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/data/42a78499a/c204cdcc33c64687b756decfcabda0cc
[2024-11-27 06:20:23,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-27 06:20:23,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-27 06:20:23,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-27 06:20:23,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-27 06:20:23,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-27 06:20:23,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 06:20:23" (1/1) ...
[2024-11-27 06:20:23,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ecce8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:23, skipping insertion in model container
[2024-11-27 06:20:23,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 06:20:23" (1/1) ...
[2024-11-27 06:20:23,947 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-27 06:20:24,452 WARN L250 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_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/sv-benchmarks/c/pthread-theta/unwind2-nondet.i[33026,33039]
[2024-11-27 06:20:24,483 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-27 06:20:24,496 INFO L200 MainTranslator]: Completed pre-run
[2024-11-27 06:20:24,554 WARN L250 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_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/sv-benchmarks/c/pthread-theta/unwind2-nondet.i[33026,33039]
[2024-11-27 06:20:24,560 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-27 06:20:24,605 INFO L204 MainTranslator]: Completed translation
[2024-11-27 06:20:24,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:24 WrapperNode
[2024-11-27 06:20:24,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-27 06:20:24,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-27 06:20:24,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-27 06:20:24,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-27 06:20:24,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:24" (1/1) ...
[2024-11-27 06:20:24,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:24" (1/1) ...
[2024-11-27 06:20:24,674 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82
[2024-11-27 06:20:24,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-27 06:20:24,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-27 06:20:24,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-27 06:20:24,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-27 06:20:24,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:24" (1/1) ...
[2024-11-27 06:20:24,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:24" (1/1) ...
[2024-11-27 06:20:24,690 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:24" (1/1) ...
[2024-11-27 06:20:24,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:24" (1/1) ...
[2024-11-27 06:20:24,699 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:24" (1/1) ...
[2024-11-27 06:20:24,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:24" (1/1) ...
[2024-11-27 06:20:24,709 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:24" (1/1) ...
[2024-11-27 06:20:24,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:24" (1/1) ...
[2024-11-27 06:20:24,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:24" (1/1) ...
[2024-11-27 06:20:24,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-27 06:20:24,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-27 06:20:24,725 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-27 06:20:24,725 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-27 06:20:24,726 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:24" (1/1) ...
[2024-11-27 06:20:24,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2024-11-27 06:20:24,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3
[2024-11-27 06:20:24,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2024-11-27 06:20:24,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2024-11-27 06:20:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-27 06:20:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure f1
[2024-11-27 06:20:24,819 INFO L138 BoogieDeclarations]: Found implementation of procedure f1
[2024-11-27 06:20:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure f2
[2024-11-27 06:20:24,820 INFO L138 BoogieDeclarations]: Found implementation of procedure f2
[2024-11-27 06:20:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2024-11-27 06:20:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-27 06:20:24,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-27 06:20:24,822 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-11-27 06:20:24,999 INFO L234 CfgBuilder]: Building ICFG
[2024-11-27 06:20:25,001 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-27 06:20:25,222 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-27 06:20:25,222 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-27 06:20:25,378 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-27 06:20:25,379 INFO L312 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-27 06:20:25,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:20:25 BoogieIcfgContainer
[2024-11-27 06:20:25,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-27 06:20:25,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-27 06:20:25,383 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-27 06:20:25,390 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-27 06:20:25,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 06:20:23" (1/3) ...
[2024-11-27 06:20:25,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4001d1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 06:20:25, skipping insertion in model container
[2024-11-27 06:20:25,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:24" (2/3) ...
[2024-11-27 06:20:25,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4001d1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 06:20:25, skipping insertion in model container
[2024-11-27 06:20:25,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:20:25" (3/3) ...
[2024-11-27 06:20:25,393 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i
[2024-11-27 06:20:25,414 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-27 06:20:25,416 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-nondet.i that has 3 procedures, 27 locations, 1 initial locations, 2 loop locations, and 2 error locations.
[2024-11-27 06:20:25,417 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-27 06:20:25,498 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-11-27 06:20:25,572 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-27 06:20:25,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2024-11-27 06:20:25,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3
[2024-11-27 06:20:25,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2024-11-27 06:20:25,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process
[2024-11-27 06:20:25,773 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2024-11-27 06:20:25,804 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == f2Thread1of1ForFork1 ========
[2024-11-27 06:20:25,815 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;@6163e5ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-27 06:20:25,815 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-27 06:20:26,086 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-27 06:20:26,086 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis.
[2024-11-27 06:20:26,087 INFO L139 ounterexampleChecker]: Examining path program with hash -433153654, occurence #1
[2024-11-27 06:20:26,087 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping...
[2024-11-27 06:20:26,088 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check.
[2024-11-27 06:20:26,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-27 06:20:26,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1150370549, now seen corresponding path program 1 times
[2024-11-27 06:20:26,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-27 06:20:26,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977577666]
[2024-11-27 06:20:26,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-27 06:20:26,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-27 06:20:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-27 06:20:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-27 06:20:26,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-27 06:20:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977577666]
[2024-11-27 06:20:26,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977577666] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-27 06:20:26,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-27 06:20:26,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-27 06:20:26,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497472607]
[2024-11-27 06:20:26,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-27 06:20:26,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-27 06:20:26,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-27 06:20:26,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-27 06:20:26,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-27 06:20:26,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-27 06:20:26,758 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-11-27 06:20:26,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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)
[2024-11-27 06:20:26,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.
[2024-11-27 06:20:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-27 06:20:26,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-27 06:20:26,967 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-27 06:20:26,967 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis.
[2024-11-27 06:20:26,967 INFO L139 ounterexampleChecker]: Examining path program with hash -433153654, occurence #2
[2024-11-27 06:20:26,967 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition.
[2024-11-27 06:20:26,967 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1
[2024-11-27 06:20:26,994 WARN L190 ounterexampleChecker]: Statements were already independent.
[2024-11-27 06:20:26,995 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6
[2024-11-27 06:20:26,995 WARN L190 ounterexampleChecker]: Statements were already independent.
[2024-11-27 06:20:26,995 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition.
[2024-11-27 06:20:26,995 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check.
[2024-11-27 06:20:26,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-27 06:20:26,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1700778891, now seen corresponding path program 1 times
[2024-11-27 06:20:26,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-27 06:20:26,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153493181]
[2024-11-27 06:20:26,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-27 06:20:26,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-27 06:20:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-27 06:20:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-27 06:20:27,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-27 06:20:27,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153493181]
[2024-11-27 06:20:27,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153493181] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-27 06:20:27,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984439956]
[2024-11-27 06:20:27,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-27 06:20:27,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-27 06:20:27,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3
[2024-11-27 06:20:27,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-27 06:20:27,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-27 06:20:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-27 06:20:27,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-27 06:20:27,628 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-27 06:20:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-27 06:20:27,998 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-27 06:20:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-27 06:20:28,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984439956] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-27 06:20:28,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-27 06:20:28,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 25
[2024-11-27 06:20:28,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970454440]
[2024-11-27 06:20:28,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-27 06:20:28,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2024-11-27 06:20:28,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-27 06:20:28,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2024-11-27 06:20:28,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600
[2024-11-27 06:20:28,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-27 06:20:28,447 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-11-27 06:20:28,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 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)
[2024-11-27 06:20:28,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states.
[2024-11-27 06:20:28,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.
[2024-11-27 06:20:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-27 06:20:29,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2024-11-27 06:20:29,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-27 06:20:30,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2024-11-27 06:20:30,139 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-27 06:20:30,140 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis.
[2024-11-27 06:20:30,140 INFO L139 ounterexampleChecker]: Examining path program with hash -433153654, occurence #3
[2024-11-27 06:20:30,140 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition.
[2024-11-27 06:20:30,140 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1
[2024-11-27 06:20:30,140 WARN L190 ounterexampleChecker]: Statements were already independent.
[2024-11-27 06:20:30,140 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6
[2024-11-27 06:20:30,140 WARN L190 ounterexampleChecker]: Statements were already independent.
[2024-11-27 06:20:30,141 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition.
[2024-11-27 06:20:30,141 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check.
[2024-11-27 06:20:30,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-27 06:20:30,141 INFO L85 PathProgramCache]: Analyzing trace with hash 627166131, now seen corresponding path program 2 times
[2024-11-27 06:20:30,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-27 06:20:30,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627726650]
[2024-11-27 06:20:30,142 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-27 06:20:30,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-27 06:20:30,201 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-27 06:20:30,203 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-27 06:20:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-27 06:20:30,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-27 06:20:30,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627726650]
[2024-11-27 06:20:30,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627726650] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-27 06:20:30,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430042183]
[2024-11-27 06:20:30,469 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-27 06:20:30,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-27 06:20:30,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3
[2024-11-27 06:20:30,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-27 06:20:30,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-27 06:20:30,574 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-27 06:20:30,574 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-27 06:20:30,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-27 06:20:30,579 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-27 06:20:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-27 06:20:31,159 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-27 06:20:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-27 06:20:31,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430042183] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-27 06:20:31,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-27 06:20:31,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 17, 17] total 36
[2024-11-27 06:20:31,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634096692]
[2024-11-27 06:20:31,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-27 06:20:31,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2024-11-27 06:20:31,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-27 06:20:31,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2024-11-27 06:20:31,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260
[2024-11-27 06:20:31,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-27 06:20:31,902 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-11-27 06:20:31,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 36 states have internal predecessors, (57), 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)
[2024-11-27 06:20:31,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states.
[2024-11-27 06:20:31,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states.
[2024-11-27 06:20:31,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.
[2024-11-27 06:20:41,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-27 06:20:41,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2024-11-27 06:20:41,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states.
[2024-11-27 06:20:41,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-27 06:20:41,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-27 06:20:41,232 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-27 06:20:41,232 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis.
[2024-11-27 06:20:41,233 INFO L139 ounterexampleChecker]: Examining path program with hash 548939712, occurence #1
[2024-11-27 06:20:41,233 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping...
[2024-11-27 06:20:41,233 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check.
[2024-11-27 06:20:41,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-27 06:20:41,233 INFO L85 PathProgramCache]: Analyzing trace with hash -530006179, now seen corresponding path program 3 times
[2024-11-27 06:20:41,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-27 06:20:41,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093089997]
[2024-11-27 06:20:41,234 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-27 06:20:41,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-27 06:20:41,259 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-11-27 06:20:41,259 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-27 06:20:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2024-11-27 06:20:41,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-27 06:20:41,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093089997]
[2024-11-27 06:20:41,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093089997] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-27 06:20:41,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93069230]
[2024-11-27 06:20:41,517 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-27 06:20:41,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-27 06:20:41,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3
[2024-11-27 06:20:41,522 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-27 06:20:41,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-27 06:20:41,621 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-11-27 06:20:41,622 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-27 06:20:41,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-11-27 06:20:41,625 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-27 06:20:41,972 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-27 06:20:41,972 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-27 06:20:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-27 06:20:42,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93069230] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-27 06:20:42,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-27 06:20:42,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 15] total 33
[2024-11-27 06:20:42,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623098010]
[2024-11-27 06:20:42,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-27 06:20:42,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states
[2024-11-27 06:20:42,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-27 06:20:42,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2024-11-27 06:20:42,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=821, Unknown=0, NotChecked=0, Total=1056
[2024-11-27 06:20:42,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-27 06:20:42,347 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-11-27 06:20:42,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 states have internal predecessors, (48), 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)
[2024-11-27 06:20:42,347 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states.
[2024-11-27 06:20:42,347 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states.
[2024-11-27 06:20:42,347 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 102 states.
[2024-11-27 06:20:42,348 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.
[2024-11-27 06:20:44,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-27 06:20:44,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2024-11-27 06:20:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states.
[2024-11-27 06:20:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2024-11-27 06:20:44,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-27 06:20:44,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-27 06:20:44,740 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-27 06:20:44,740 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis.
[2024-11-27 06:20:44,741 INFO L139 ounterexampleChecker]: Examining path program with hash 1608697149, occurence #1
[2024-11-27 06:20:44,741 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping...
[2024-11-27 06:20:44,741 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check.
[2024-11-27 06:20:44,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-27 06:20:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash -81669724, now seen corresponding path program 1 times
[2024-11-27 06:20:44,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-27 06:20:44,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374057103]
[2024-11-27 06:20:44,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-27 06:20:44,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-27 06:20:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-27 06:20:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-11-27 06:20:45,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-27 06:20:45,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374057103]
[2024-11-27 06:20:45,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374057103] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-27 06:20:45,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732374238]
[2024-11-27 06:20:45,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-27 06:20:45,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-27 06:20:45,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3
[2024-11-27 06:20:45,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-27 06:20:45,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-27 06:20:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-27 06:20:45,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-27 06:20:45,159 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-27 06:20:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-27 06:20:45,606 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-27 06:20:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-27 06:20:46,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732374238] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-27 06:20:46,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-27 06:20:46,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 17] total 38
[2024-11-27 06:20:46,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082044108]
[2024-11-27 06:20:46,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-27 06:20:46,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2024-11-27 06:20:46,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-27 06:20:46,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2024-11-27 06:20:46,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406
[2024-11-27 06:20:46,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-27 06:20:46,039 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-11-27 06:20:46,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 38 states have internal predecessors, (60), 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)
[2024-11-27 06:20:46,039 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states.
[2024-11-27 06:20:46,039 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states.
[2024-11-27 06:20:46,039 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 104 states.
[2024-11-27 06:20:46,039 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states.
[2024-11-27 06:20:46,039 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.
[2024-11-27 06:20:49,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-27 06:20:49,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2024-11-27 06:20:49,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states.
[2024-11-27 06:20:49,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2024-11-27 06:20:49,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states.
[2024-11-27 06:20:49,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-27 06:20:49,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-27 06:20:49,732 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-27 06:20:49,732 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis.
[2024-11-27 06:20:49,732 INFO L139 ounterexampleChecker]: Examining path program with hash 1608697149, occurence #2
[2024-11-27 06:20:49,732 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition.
[2024-11-27 06:20:49,733 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1
[2024-11-27 06:20:49,733 WARN L190 ounterexampleChecker]: Statements were already independent.
[2024-11-27 06:20:49,733 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4
[2024-11-27 06:20:49,733 WARN L190 ounterexampleChecker]: Statements were already independent.
[2024-11-27 06:20:49,733 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6
[2024-11-27 06:20:49,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-27 06:20:49,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1209667632, now seen corresponding path program 1 times
[2024-11-27 06:20:49,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SMTINTERPOL
[2024-11-27 06:20:49,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513891951]
[2024-11-27 06:20:49,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-27 06:20:49,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-27 06:20:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-27 06:20:49,756 INFO L130 FreeRefinementEngine]: Strategy SMTINTERPOL found a feasible trace
[2024-11-27 06:20:49,756 INFO L180 ounterexampleChecker]: Commutativity condition check vielded CONDITION_NOT_SATISFIED. Marking as hopeless.
[2024-11-27 06:20:49,756 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition.
[2024-11-27 06:20:49,757 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check.
[2024-11-27 06:20:49,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-27 06:20:49,757 INFO L85 PathProgramCache]: Analyzing trace with hash 887127726, now seen corresponding path program 2 times
[2024-11-27 06:20:49,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-27 06:20:49,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993834041]
[2024-11-27 06:20:49,757 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-27 06:20:49,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-27 06:20:49,790 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-27 06:20:49,791 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-27 06:20:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2024-11-27 06:20:50,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-27 06:20:50,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993834041]
[2024-11-27 06:20:50,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993834041] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-27 06:20:50,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856241247]
[2024-11-27 06:20:50,152 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-27 06:20:50,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-27 06:20:50,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3
[2024-11-27 06:20:50,158 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-27 06:20:50,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-27 06:20:50,250 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-27 06:20:50,251 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-27 06:20:50,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-27 06:20:50,254 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-27 06:20:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2024-11-27 06:20:50,323 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-27 06:20:50,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856241247] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-27 06:20:50,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-27 06:20:50,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8
[2024-11-27 06:20:50,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726660881]
[2024-11-27 06:20:50,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-27 06:20:50,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-27 06:20:50,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-27 06:20:50,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-27 06:20:50,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-27 06:20:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-27 06:20:50,326 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-11-27 06:20:50,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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)
[2024-11-27 06:20:50,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states.
[2024-11-27 06:20:50,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states.
[2024-11-27 06:20:50,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 104 states.
[2024-11-27 06:20:50,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states.
[2024-11-27 06:20:50,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 85 states.
[2024-11-27 06:20:50,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.
[2024-11-27 06:20:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-27 06:20:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2024-11-27 06:20:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states.
[2024-11-27 06:20:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2024-11-27 06:20:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states.
[2024-11-27 06:20:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-27 06:20:50,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-27 06:20:50,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-27 06:20:50,823 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-27 06:20:50,823 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis.
[2024-11-27 06:20:50,823 INFO L139 ounterexampleChecker]: Examining path program with hash -163533678, occurence #1
[2024-11-27 06:20:50,823 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping...
[2024-11-27 06:20:50,823 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check.
[2024-11-27 06:20:50,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-27 06:20:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1761929047, now seen corresponding path program 1 times
[2024-11-27 06:20:50,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-27 06:20:50,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753683655]
[2024-11-27 06:20:50,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-27 06:20:50,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-27 06:20:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-27 06:20:50,854 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-27 06:20:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-27 06:20:50,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-27 06:20:50,918 INFO L340 BasicCegarLoop]: Counterexample is feasible
[2024-11-27 06:20:50,919 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-27 06:20:50,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-27 06:20:50,928 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1]
[2024-11-27 06:20:50,931 INFO L319 ceAbstractionStarter]: Result for error location f2Thread1of1ForFork1 was UNSAFE (1/3)
[2024-11-27 06:20:50,998 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2024-11-27 06:20:51,002 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-27 06:20:51,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0
[2024-11-27 06:20:51,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 06:20:51 BasicIcfg
[2024-11-27 06:20:51,017 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-27 06:20:51,018 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-27 06:20:51,018 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-27 06:20:51,018 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-27 06:20:51,019 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:20:25" (3/4) ...
[2024-11-27 06:20:51,020 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample
[2024-11-27 06:20:51,120 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 25.
[2024-11-27 06:20:51,218 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/witness.graphml
[2024-11-27 06:20:51,219 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/witness.yml
[2024-11-27 06:20:51,219 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-27 06:20:51,220 INFO L158 Benchmark]: Toolchain (without parser) took 27351.41ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 91.3MB in the beginning and 75.9MB in the end (delta: 15.4MB). Peak memory consumption was 115.8MB. Max. memory is 16.1GB.
[2024-11-27 06:20:51,221 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-27 06:20:51,221 INFO L158 Benchmark]: CACSL2BoogieTranslator took 736.95ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 70.9MB in the end (delta: 20.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB.
[2024-11-27 06:20:51,222 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.00ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 69.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-27 06:20:51,224 INFO L158 Benchmark]: Boogie Preprocessor took 47.61ms. Allocated memory is still 117.4MB. Free memory was 69.2MB in the beginning and 68.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-27 06:20:51,225 INFO L158 Benchmark]: RCFGBuilder took 654.87ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 48.0MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-27 06:20:51,226 INFO L158 Benchmark]: TraceAbstraction took 25634.55ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 47.5MB in the beginning and 84.4MB in the end (delta: -36.9MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB.
[2024-11-27 06:20:51,226 INFO L158 Benchmark]: Witness Printer took 201.31ms. Allocated memory is still 218.1MB. Free memory was 84.4MB in the beginning and 75.9MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-27 06:20:51,230 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.41ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 736.95ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 70.9MB in the end (delta: 20.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 67.00ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 69.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 47.61ms. Allocated memory is still 117.4MB. Free memory was 69.2MB in the beginning and 68.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 654.87ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 48.0MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 25634.55ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 47.5MB in the beginning and 84.4MB in the end (delta: -36.9MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB.
* Witness Printer took 201.31ms. Allocated memory is still 218.1MB. Free memory was 84.4MB in the beginning and 75.9MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: Partial order reduction statistics
Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 7462, independent: 5816, independent conditional: 5484, independent unconditional: 332, dependent: 1646, dependent conditional: 1638, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5837, independent: 5816, independent conditional: 5484, independent unconditional: 332, dependent: 21, dependent conditional: 13, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 5837, independent: 5816, independent conditional: 5484, independent unconditional: 332, dependent: 21, dependent conditional: 13, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5877, independent: 5816, independent conditional: 5484, independent unconditional: 332, dependent: 61, dependent conditional: 53, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 5877, independent: 5816, independent conditional: 0, independent unconditional: 5816, dependent: 61, dependent conditional: 40, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 5877, independent: 5816, independent conditional: 0, independent unconditional: 5816, dependent: 61, dependent conditional: 40, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 351, independent: 333, independent conditional: 0, independent unconditional: 333, dependent: 18, dependent conditional: 10, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 351, independent: 331, independent conditional: 0, independent unconditional: 331, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 20, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 18, dependent conditional: 10, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 20, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 18, dependent conditional: 10, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 310, independent: 90, independent conditional: 0, independent unconditional: 90, dependent: 220, dependent conditional: 68, dependent unconditional: 151, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 1, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 5877, independent: 5483, independent conditional: 0, independent unconditional: 5483, dependent: 43, dependent conditional: 30, dependent unconditional: 13, unknown: 351, unknown conditional: 10, unknown unconditional: 341] , Statistics on independence cache: Total cache size (in pairs): 352, Positive cache size: 334, Positive conditional cache size: 1, Positive unconditional cache size: 333, Negative cache size: 18, Negative conditional cache size: 10, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 5497, Maximal queried relation: 4, Independence queries for same thread: 1625, Persistent sets #1 benchmarks: Persistent set computation time: 0.3s, Number of persistent set computation: 55, Number of trivial persistent sets: 39, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 340, independent: 332, independent conditional: 0, independent unconditional: 332, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 7462, independent: 5816, independent conditional: 5484, independent unconditional: 332, dependent: 1646, dependent conditional: 1638, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5837, independent: 5816, independent conditional: 5484, independent unconditional: 332, dependent: 21, dependent conditional: 13, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 5837, independent: 5816, independent conditional: 5484, independent unconditional: 332, dependent: 21, dependent conditional: 13, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5877, independent: 5816, independent conditional: 5484, independent unconditional: 332, dependent: 61, dependent conditional: 53, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 5877, independent: 5816, independent conditional: 0, independent unconditional: 5816, dependent: 61, dependent conditional: 40, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 5877, independent: 5816, independent conditional: 0, independent unconditional: 5816, dependent: 61, dependent conditional: 40, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 351, independent: 333, independent conditional: 0, independent unconditional: 333, dependent: 18, dependent conditional: 10, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 351, independent: 331, independent conditional: 0, independent unconditional: 331, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 20, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 18, dependent conditional: 10, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 20, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 18, dependent conditional: 10, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 310, independent: 90, independent conditional: 0, independent unconditional: 90, dependent: 220, dependent conditional: 68, dependent unconditional: 151, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 1, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 5877, independent: 5483, independent conditional: 0, independent unconditional: 5483, dependent: 43, dependent conditional: 30, dependent unconditional: 13, unknown: 351, unknown conditional: 10, unknown unconditional: 341] , Statistics on independence cache: Total cache size (in pairs): 352, Positive cache size: 334, Positive conditional cache size: 1, Positive unconditional cache size: 333, Negative cache size: 18, Negative conditional cache size: 10, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 5497, Maximal queried relation: 4, Independence queries for same thread: 1625
- CounterExampleResult [Line: 753]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L754] 0 int _N;
[L755] 0 atomic_int limit;
[L775] 0 _N = __VERIFIER_nondet_int()
[L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1)
[L750] COND FALSE 0 !(!cond)
[L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1)
[L777] 0 pthread_t t1, t2;
[L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0)
VAL [_N=7, limit=0, t1=-1]
[L757] 1 int i, bound;
[L758] 1 int lim = _N;
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, lim=7, limit=0]
[L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0)
VAL [_N=7, limit=0, t1=-1, t2=0]
[L766] 2 int i, bound;
[L767] 2 int lim = _N + 1;
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, lim=8, limit=0]
[L768] 2 limit = lim
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, lim=8, limit=8]
[L759] 1 limit = lim
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, lim=7, limit=7]
[L760] 1 bound = limit
[L761] 1 i = 0
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=0, lim=7, limit=7]
[L769] 2 bound = limit
[L770] 2 i = 0
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=0, lim=8, limit=7]
[L761] COND TRUE 1 i < bound
[L761] 1 i++
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=1, lim=7, limit=7]
[L770] COND TRUE 2 i < bound
[L770] 2 i++
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=1, lim=8, limit=7]
[L761] COND TRUE 1 i < bound
[L761] 1 i++
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=2, lim=7, limit=7]
[L770] COND TRUE 2 i < bound
[L770] 2 i++
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=2, lim=8, limit=7]
[L761] COND TRUE 1 i < bound
[L761] 1 i++
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=3, lim=7, limit=7]
[L770] COND TRUE 2 i < bound
[L770] 2 i++
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=3, lim=8, limit=7]
[L761] COND TRUE 1 i < bound
[L761] 1 i++
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=4, lim=7, limit=7]
[L770] COND TRUE 2 i < bound
[L770] 2 i++
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=4, lim=8, limit=7]
[L761] COND TRUE 1 i < bound
[L761] 1 i++
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=5, lim=7, limit=7]
[L770] COND TRUE 2 i < bound
[L770] 2 i++
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=5, lim=8, limit=7]
[L761] COND TRUE 1 i < bound
[L761] 1 i++
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=6, lim=7, limit=7]
[L770] COND TRUE 2 i < bound
[L770] 2 i++
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=6, lim=8, limit=7]
[L761] COND TRUE 1 i < bound
[L761] 1 i++
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=7, lim=7, limit=7]
[L770] COND TRUE 2 i < bound
[L770] 2 i++
VAL [\old(arg)={0:0}, _N=7, arg={0:0}, bound=7, i=7, lim=8, limit=7]
[L761] COND FALSE 1 !(i < bound)
[L762] CALL 1 __VERIFIER_assert(i == lim)
[L753] COND FALSE 1 !(!expression)
VAL [\old(expression)=1, _N=7, expression=1, limit=7]
[L762] RET 1 __VERIFIER_assert(i == lim)
[L763] 1 return 0;
[L780] FCALL, JOIN 1 pthread_join(t1, 0)
VAL [_N=7, limit=7, t1=-1, t2=0]
[L770] COND FALSE 2 !(i < bound)
[L771] CALL 2 __VERIFIER_assert(i == lim)
[L753] COND TRUE 2 !expression
VAL [\old(expression)=0, _N=7, expression=0, limit=7]
[L753] 2 reach_error()
VAL [\old(expression)=0, _N=7, expression=0, limit=7]
- StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: f2Thread1of1ForFork1 with 1 thread instances
CFG has 5 procedures, 47 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 25.2s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 3, EmptinessCheckTime: 17.1s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 288, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 301 NumberOfCodeBlocks, 301 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 1861 SizeOfPredicates, 28 NumberOfNonLiveVariables, 594 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 15 InterpolantComputations, 2 PerfectInterpolantSequences, 147/371 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: SuccessfulCommutativityProofs: 0, ConComChecker Statistics: CheckTime [ms]: 50, ConditionCalculationTime [ms]: 8, ConditionCalculations: 1, QuantifiedConditions: 0, TraceChecks: 1, UnknownTraceChecks: 0, ImperfectProofs: 0
RESULT: Ultimate proved your program to be incorrect!
[2024-11-27 06:20:51,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3a8e6ea-4747-41b5-b98b-a1c7d7196b4f/bin/ugemcutter-verify-fG3NtRWMco/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE