./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 7e70badd
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw --witnessprinter.witness.filename witness.graphml --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 a12f7bc3d94ecbf6fd25030121af7b8c4b258a536df3d333f191aa6387ec429b
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-7e70bad
[2021-11-23 14:21:53,551 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-11-23 14:21:53,554 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-23 14:21:53,612 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-23 14:21:53,613 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-23 14:21:53,615 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-23 14:21:53,617 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-23 14:21:53,620 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-23 14:21:53,623 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-23 14:21:53,625 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-23 14:21:53,627 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-11-23 14:21:53,629 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-23 14:21:53,632 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-23 14:21:53,636 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-23 14:21:53,639 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-23 14:21:53,644 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-23 14:21:53,646 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-23 14:21:53,653 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-23 14:21:53,656 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-23 14:21:53,661 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-23 14:21:53,669 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-23 14:21:53,670 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-23 14:21:53,674 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-11-23 14:21:53,676 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-23 14:21:53,684 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-23 14:21:53,685 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-23 14:21:53,686 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-23 14:21:53,688 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-23 14:21:53,689 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-23 14:21:53,691 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-23 14:21:53,693 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-23 14:21:53,694 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-23 14:21:53,697 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-23 14:21:53,699 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-23 14:21:53,701 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-23 14:21:53,702 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-23 14:21:53,703 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-23 14:21:53,703 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-23 14:21:53,704 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-23 14:21:53,705 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-23 14:21:53,706 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-11-23 14:21:53,707 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/config/svcomp-Reach-32bit-GemCutter_Default.epf
[2021-11-23 14:21:53,755 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-11-23 14:21:53,755 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-23 14:21:53,756 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-23 14:21:53,756 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-23 14:21:53,757 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-23 14:21:53,757 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-23 14:21:53,758 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-23 14:21:53,758 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-11-23 14:21:53,759 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-11-23 14:21:53,759 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-23 14:21:53,759 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-11-23 14:21:53,760 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-11-23 14:21:53,760 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-11-23 14:21:53,760 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-11-23 14:21:53,761 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-11-23 14:21:53,761 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-23 14:21:53,761 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-11-23 14:21:53,761 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-11-23 14:21:53,762 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-11-23 14:21:53,762 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-11-23 14:21:53,762 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-11-23 14:21:53,763 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-23 14:21:53,763 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-11-23 14:21:53,763 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2021-11-23 14:21:53,764 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-11-23 14:21:53,764 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-23 14:21:53,764 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-23 14:21:53,765 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-11-23 14:21:53,765 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-23 14:21:53,765 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-11-23 14:21:53,765 INFO  L138        SettingsManager]:  * DFS Order used in POR=LOOP_LOCKSTEP
[2021-11-23 14:21:53,766 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-23 14:21:53,766 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-11-23 14:21:53,766 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2021-11-23 14:21:53,767 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-23 14:21:53,767 INFO  L138        SettingsManager]:  * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE
[2021-11-23 14:21:53,767 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER
[2021-11-23 14:21:53,768 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
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 -> a12f7bc3d94ecbf6fd25030121af7b8c4b258a536df3d333f191aa6387ec429b
[2021-11-23 14:21:54,109 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-23 14:21:54,165 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-23 14:21:54,168 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-23 14:21:54,170 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-11-23 14:21:54,171 INFO  L275        PluginConnector]: CDTParser initialized
[2021-11-23 14:21:54,173 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/../../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c
[2021-11-23 14:21:54,259 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/data/a8f37d330/92fd3f2d95004aa58b841a236355bc8c/FLAG90d009c2c
[2021-11-23 14:21:54,837 INFO  L306              CDTParser]: Found 1 translation units.
[2021-11-23 14:21:54,843 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c
[2021-11-23 14:21:54,857 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/data/a8f37d330/92fd3f2d95004aa58b841a236355bc8c/FLAG90d009c2c
[2021-11-23 14:21:55,134 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/data/a8f37d330/92fd3f2d95004aa58b841a236355bc8c
[2021-11-23 14:21:55,138 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-23 14:21:55,140 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-23 14:21:55,157 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-23 14:21:55,157 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-23 14:21:55,161 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-23 14:21:55,162 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:55" (1/1) ...
[2021-11-23 14:21:55,163 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57458857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:55, skipping insertion in model container
[2021-11-23 14:21:55,163 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:55" (1/1) ...
[2021-11-23 14:21:55,173 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-11-23 14:21:55,199 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-11-23 14:21:55,448 WARN  L230   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_e49d0c01-ba9a-44bf-adef-d77457292dff/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c[2957,2970]
[2021-11-23 14:21:55,453 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-11-23 14:21:55,463 INFO  L203         MainTranslator]: Completed pre-run
[2021-11-23 14:21:55,496 WARN  L230   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_e49d0c01-ba9a-44bf-adef-d77457292dff/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c[2957,2970]
[2021-11-23 14:21:55,497 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-11-23 14:21:55,515 INFO  L208         MainTranslator]: Completed translation
[2021-11-23 14:21:55,516 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:55 WrapperNode
[2021-11-23 14:21:55,516 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-23 14:21:55,518 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-23 14:21:55,518 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-23 14:21:55,519 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-23 14:21:55,528 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:55" (1/1) ...
[2021-11-23 14:21:55,538 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:55" (1/1) ...
[2021-11-23 14:21:55,573 INFO  L137                Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79
[2021-11-23 14:21:55,574 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-23 14:21:55,577 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-23 14:21:55,578 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-23 14:21:55,578 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-11-23 14:21:55,589 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:55" (1/1) ...
[2021-11-23 14:21:55,590 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:55" (1/1) ...
[2021-11-23 14:21:55,611 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:55" (1/1) ...
[2021-11-23 14:21:55,611 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:55" (1/1) ...
[2021-11-23 14:21:55,630 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:55" (1/1) ...
[2021-11-23 14:21:55,636 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:55" (1/1) ...
[2021-11-23 14:21:55,638 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:55" (1/1) ...
[2021-11-23 14:21:55,642 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-23 14:21:55,643 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-23 14:21:55,643 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-11-23 14:21:55,643 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-11-23 14:21:55,645 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:55" (1/1) ...
[2021-11-23 14:21:55,654 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-23 14:21:55,668 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3
[2021-11-23 14:21:55,686 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-23 14:21:55,690 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-23 14:21:55,735 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-11-23 14:21:55,736 INFO  L130     BoogieDeclarations]: Found specification of procedure thread1
[2021-11-23 14:21:55,736 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread1
[2021-11-23 14:21:55,736 INFO  L130     BoogieDeclarations]: Found specification of procedure thread2
[2021-11-23 14:21:55,737 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread2
[2021-11-23 14:21:55,737 INFO  L130     BoogieDeclarations]: Found specification of procedure thread3
[2021-11-23 14:21:55,737 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread3
[2021-11-23 14:21:55,737 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-23 14:21:55,737 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-23 14:21:55,738 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2021-11-23 14:21:55,738 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2021-11-23 14:21:55,738 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2021-11-23 14:21:55,738 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-23 14:21:55,739 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-23 14:21:55,739 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2021-11-23 14:21:55,739 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-11-23 14:21:55,741 WARN  L209             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-11-23 14:21:55,843 INFO  L236             CfgBuilder]: Building ICFG
[2021-11-23 14:21:55,845 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-11-23 14:21:56,221 INFO  L277             CfgBuilder]: Performing block encoding
[2021-11-23 14:21:56,294 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-23 14:21:56,295 INFO  L301             CfgBuilder]: Removed 3 assume(true) statements.
[2021-11-23 14:21:56,298 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:56 BoogieIcfgContainer
[2021-11-23 14:21:56,298 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-23 14:21:56,300 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-23 14:21:56,300 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-11-23 14:21:56,304 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-11-23 14:21:56,304 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:21:55" (1/3) ...
[2021-11-23 14:21:56,305 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f092e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:56, skipping insertion in model container
[2021-11-23 14:21:56,305 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:55" (2/3) ...
[2021-11-23 14:21:56,305 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f092e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:56, skipping insertion in model container
[2021-11-23 14:21:56,305 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:56" (3/3) ...
[2021-11-23 14:21:56,307 INFO  L111   eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c
[2021-11-23 14:21:56,313 WARN  L149   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-11-23 14:21:56,314 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-23 14:21:56,314 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-23 14:21:56,314 INFO  L513   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-11-23 14:21:56,354 WARN  L322   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,355 WARN  L322   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,355 WARN  L322   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,356 WARN  L322   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,356 WARN  L322   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,356 WARN  L322   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,357 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,357 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,357 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,358 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,358 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,358 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,358 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,359 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,359 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,359 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,359 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,360 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,360 WARN  L322   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,360 WARN  L322   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,361 WARN  L322   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,361 WARN  L322   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,362 WARN  L322   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,362 WARN  L322   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,362 WARN  L322   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,363 WARN  L322   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,363 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,363 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,363 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,364 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,364 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,364 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,364 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,365 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,365 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,365 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,366 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,366 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,367 WARN  L322   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,367 WARN  L322   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,368 WARN  L322   ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,368 WARN  L322   ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,396 WARN  L322   ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,396 WARN  L322   ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,397 WARN  L322   ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,397 WARN  L322   ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,397 WARN  L322   ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,397 WARN  L322   ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,398 WARN  L322   ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,398 WARN  L322   ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,398 WARN  L322   ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,399 WARN  L322   ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,399 WARN  L322   ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,399 WARN  L322   ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,399 WARN  L322   ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,400 WARN  L322   ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,403 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,404 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,404 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,404 WARN  L322   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,405 WARN  L322   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,406 WARN  L322   ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,406 WARN  L322   ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,407 WARN  L322   ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,407 WARN  L322   ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,407 WARN  L322   ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,408 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,409 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,409 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,409 WARN  L322   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,409 WARN  L322   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-23 14:21:56,426 INFO  L148    ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2021-11-23 14:21:56,495 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2021-11-23 14:21:56,496 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3
[2021-11-23 14:21:56,498 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2021-11-23 14:21:56,515 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process
[2021-11-23 14:21:56,546 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ========
[2021-11-23 14:21:56,554 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR
[2021-11-23 14:21:56,554 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2021-11-23 14:21:56,818 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2021-11-23 14:21:56,824 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:21:56,824 INFO  L85        PathProgramCache]: Analyzing trace with hash -368751022, now seen corresponding path program 1 times
[2021-11-23 14:21:56,835 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:21:56,836 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699762048]
[2021-11-23 14:21:56,836 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:21:56,837 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:21:56,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:21:57,071 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-23 14:21:57,072 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:21:57,072 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699762048]
[2021-11-23 14:21:57,073 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699762048] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:21:57,073 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 14:21:57,074 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-23 14:21:57,075 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341265210]
[2021-11-23 14:21:57,076 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:21:57,082 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-23 14:21:57,082 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:21:57,108 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-23 14:21:57,109 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-23 14:21:57,110 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:21:57,112 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-11-23 14:21:57,114 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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)
[2021-11-23 14:21:57,114 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:21:57,168 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:21:57,169 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-23 14:21:57,169 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2021-11-23 14:21:57,170 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:21:57,170 INFO  L85        PathProgramCache]: Analyzing trace with hash 1556710776, now seen corresponding path program 1 times
[2021-11-23 14:21:57,170 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:21:57,171 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489026319]
[2021-11-23 14:21:57,171 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:21:57,171 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:21:57,402 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:21:58,090 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-23 14:21:58,091 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:21:58,091 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489026319]
[2021-11-23 14:21:58,091 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489026319] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:21:58,092 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 14:21:58,092 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-23 14:21:58,092 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075298646]
[2021-11-23 14:21:58,092 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:21:58,094 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-23 14:21:58,094 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:21:58,095 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-23 14:21:58,096 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2021-11-23 14:21:58,096 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:21:58,096 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-11-23 14:21:58,096 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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)
[2021-11-23 14:21:58,097 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:21:58,097 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:21:58,601 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:21:58,602 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-11-23 14:21:58,602 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-23 14:21:58,603 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2021-11-23 14:21:58,604 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:21:58,604 INFO  L85        PathProgramCache]: Analyzing trace with hash 1774941515, now seen corresponding path program 1 times
[2021-11-23 14:21:58,604 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:21:58,604 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353307579]
[2021-11-23 14:21:58,605 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:21:58,605 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:21:58,722 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:21:59,079 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-23 14:21:59,079 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:21:59,080 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353307579]
[2021-11-23 14:21:59,080 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353307579] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-23 14:21:59,080 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234192049]
[2021-11-23 14:21:59,081 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:21:59,081 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-23 14:21:59,081 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3
[2021-11-23 14:21:59,086 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-23 14:21:59,108 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-23 14:21:59,193 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:21:59,196 INFO  L263         TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 13 conjunts are in the unsatisfiable core
[2021-11-23 14:21:59,206 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-23 14:21:59,732 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-11-23 14:21:59,733 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-23 14:21:59,733 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234192049] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:21:59,733 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-23 14:21:59,734 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14
[2021-11-23 14:21:59,734 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628171415]
[2021-11-23 14:21:59,734 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:21:59,735 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-11-23 14:21:59,735 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:21:59,736 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-11-23 14:21:59,737 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182
[2021-11-23 14:21:59,737 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:21:59,737 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-11-23 14:21:59,737 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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)
[2021-11-23 14:21:59,738 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:21:59,738 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-11-23 14:21:59,738 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:22:00,181 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:22:00,181 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-11-23 14:22:00,181 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2021-11-23 14:22:00,248 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-23 14:22:00,411 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-23 14:22:00,411 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2021-11-23 14:22:00,412 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:22:00,412 INFO  L85        PathProgramCache]: Analyzing trace with hash 1117254599, now seen corresponding path program 1 times
[2021-11-23 14:22:00,413 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:22:00,413 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894980564]
[2021-11-23 14:22:00,413 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:22:00,414 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:22:00,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:22:00,757 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-23 14:22:00,758 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:22:00,758 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894980564]
[2021-11-23 14:22:00,760 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894980564] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-23 14:22:00,760 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445917784]
[2021-11-23 14:22:00,760 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:22:00,761 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-23 14:22:00,761 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3
[2021-11-23 14:22:00,765 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-23 14:22:00,784 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-23 14:22:00,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:22:00,874 INFO  L263         TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 15 conjunts are in the unsatisfiable core
[2021-11-23 14:22:00,884 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-23 14:22:01,445 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-23 14:22:01,445 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-23 14:22:02,078 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-23 14:22:02,079 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445917784] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-23 14:22:02,079 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-23 14:22:02,081 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 8] total 19
[2021-11-23 14:22:02,085 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039479361]
[2021-11-23 14:22:02,086 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-23 14:22:02,087 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2021-11-23 14:22:02,088 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:22:02,088 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-11-23 14:22:02,090 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342
[2021-11-23 14:22:02,091 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:22:02,092 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-11-23 14:22:02,092 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 19 states have (on average 9.789473684210526) internal successors, (186), 19 states have internal predecessors, (186), 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)
[2021-11-23 14:22:02,093 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:22:02,100 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-11-23 14:22:02,100 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. 
[2021-11-23 14:22:02,100 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:22:02,933 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:22:02,933 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-11-23 14:22:02,933 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2021-11-23 14:22:02,934 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2021-11-23 14:22:02,978 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-23 14:22:03,134 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-23 14:22:03,135 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2021-11-23 14:22:03,135 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:22:03,135 INFO  L85        PathProgramCache]: Analyzing trace with hash 1913684513, now seen corresponding path program 2 times
[2021-11-23 14:22:03,135 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:22:03,136 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129558204]
[2021-11-23 14:22:03,136 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:22:03,136 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:22:03,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:22:03,612 INFO  L134       CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-23 14:22:03,613 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:22:03,613 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129558204]
[2021-11-23 14:22:03,613 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129558204] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-23 14:22:03,613 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555908171]
[2021-11-23 14:22:03,614 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-23 14:22:03,614 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-23 14:22:03,614 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3
[2021-11-23 14:22:03,649 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-23 14:22:03,672 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-23 14:22:03,840 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-23 14:22:03,841 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-23 14:22:03,843 INFO  L263         TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-11-23 14:22:03,848 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-11-23 14:22:04,768 INFO  L134       CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-23 14:22:04,768 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-11-23 14:22:05,737 INFO  L134       CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-23 14:22:05,737 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555908171] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-23 14:22:05,738 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-23 14:22:05,738 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 11] total 28
[2021-11-23 14:22:05,738 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413020507]
[2021-11-23 14:22:05,739 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-23 14:22:05,741 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2021-11-23 14:22:05,741 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:22:05,742 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2021-11-23 14:22:05,743 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756
[2021-11-23 14:22:05,743 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:22:05,743 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-11-23 14:22:05,744 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 28 states, 28 states have (on average 7.321428571428571) internal successors, (205), 28 states have internal predecessors, (205), 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)
[2021-11-23 14:22:05,744 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:22:05,744 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-11-23 14:22:05,744 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. 
[2021-11-23 14:22:05,745 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. 
[2021-11-23 14:22:05,745 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:22:07,980 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-11-23 14:22:07,981 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-11-23 14:22:07,981 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2021-11-23 14:22:07,981 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2021-11-23 14:22:07,981 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2021-11-23 14:22:08,006 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-11-23 14:22:08,182 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-23 14:22:08,182 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2021-11-23 14:22:08,183 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:22:08,183 INFO  L85        PathProgramCache]: Analyzing trace with hash -1681278995, now seen corresponding path program 3 times
[2021-11-23 14:22:08,184 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:22:08,184 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417858824]
[2021-11-23 14:22:08,184 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:22:08,184 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:22:08,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:22:12,540 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-23 14:22:12,540 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:22:12,541 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417858824]
[2021-11-23 14:22:12,541 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417858824] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-23 14:22:12,541 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403923440]
[2021-11-23 14:22:12,541 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-23 14:22:12,542 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-23 14:22:12,542 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3
[2021-11-23 14:22:12,543 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-23 14:22:12,549 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d0c01-ba9a-44bf-adef-d77457292dff/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-11-23 14:22:13,024 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-11-23 14:22:13,024 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-23 14:22:13,026 INFO  L263         TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 33 conjunts are in the unsatisfiable core
[2021-11-23 14:22:13,031 INFO  L286         TraceCheckSpWp]: Computing forward predicates...