./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c --full-output --architecture 32bit


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


Checking for overflows
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) )

 --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-12-02 15:08:58,784 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-02 15:08:58,847 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf
[2023-12-02 15:08:58,853 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-02 15:08:58,853 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-02 15:08:58,880 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-02 15:08:58,880 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-02 15:08:58,881 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-02 15:08:58,882 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-02 15:08:58,882 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-02 15:08:58,883 INFO  L153        SettingsManager]:  * User list type=DISABLED
[2023-12-02 15:08:58,883 INFO  L151        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-12-02 15:08:58,884 INFO  L153        SettingsManager]:  * Explicit value domain=true
[2023-12-02 15:08:58,884 INFO  L153        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-12-02 15:08:58,885 INFO  L153        SettingsManager]:  * Octagon Domain=false
[2023-12-02 15:08:58,885 INFO  L153        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-12-02 15:08:58,886 INFO  L153        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-12-02 15:08:58,886 INFO  L153        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-12-02 15:08:58,887 INFO  L153        SettingsManager]:  * Interval Domain=false
[2023-12-02 15:08:58,887 INFO  L151        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-12-02 15:08:58,888 INFO  L153        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-12-02 15:08:58,888 INFO  L153        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-12-02 15:08:58,889 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-02 15:08:58,890 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-02 15:08:58,890 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-02 15:08:58,890 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-02 15:08:58,891 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-02 15:08:58,891 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-02 15:08:58,892 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-02 15:08:58,892 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-02 15:08:58,892 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-02 15:08:58,893 INFO  L153        SettingsManager]:  * Check absence of signed integer overflows=true
[2023-12-02 15:08:58,893 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2023-12-02 15:08:58,893 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-02 15:08:58,894 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-02 15:08:58,894 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-02 15:08:58,894 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-02 15:08:58,894 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-02 15:08:58,894 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-02 15:08:58,895 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 15:08:58,895 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-02 15:08:58,895 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-02 15:08:58,895 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-02 15:08:58,896 INFO  L153        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-12-02 15:08:58,896 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-02 15:08:58,896 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-02 15:08:58,896 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-02 15:08:58,896 INFO  L153        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-12-02 15:08:58,896 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-02 15:08:58,897 INFO  L153        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
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_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/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_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh
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 ! overflow) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan
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 -> fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea
[2023-12-02 15:08:59,113 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-02 15:08:59,135 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-02 15:08:59,137 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-02 15:08:59,138 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-02 15:08:59,138 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-02 15:08:59,139 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c
[2023-12-02 15:09:01,929 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-02 15:09:02,107 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-02 15:09:02,107 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c
[2023-12-02 15:09:02,114 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/data/016e1b3c3/994422639303477bb9aaf7e7a0535f70/FLAG1c3885ef9
[2023-12-02 15:09:02,126 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/data/016e1b3c3/994422639303477bb9aaf7e7a0535f70
[2023-12-02 15:09:02,128 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-02 15:09:02,129 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-12-02 15:09:02,130 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-02 15:09:02,130 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-02 15:09:02,135 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-02 15:09:02,136 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:09:02" (1/1) ...
[2023-12-02 15:09:02,137 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b32d624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:09:02, skipping insertion in model container
[2023-12-02 15:09:02,137 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:09:02" (1/1) ...
[2023-12-02 15:09:02,159 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-02 15:09:02,293 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-02 15:09:02,302 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-02 15:09:02,322 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-02 15:09:02,330 WARN  L675               CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler.
[2023-12-02 15:09:02,330 WARN  L675               CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler.
[2023-12-02 15:09:02,337 INFO  L206         MainTranslator]: Completed translation
[2023-12-02 15:09:02,337 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:09:02 WrapperNode
[2023-12-02 15:09:02,337 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-02 15:09:02,338 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-02 15:09:02,338 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-02 15:09:02,338 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-02 15:09:02,344 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:09:02" (1/1) ...
[2023-12-02 15:09:02,350 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:09:02" (1/1) ...
[2023-12-02 15:09:02,366 INFO  L138                Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 55
[2023-12-02 15:09:02,367 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-02 15:09:02,367 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-02 15:09:02,367 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-02 15:09:02,367 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-02 15:09:02,377 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:09:02" (1/1) ...
[2023-12-02 15:09:02,377 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:09:02" (1/1) ...
[2023-12-02 15:09:02,379 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:09:02" (1/1) ...
[2023-12-02 15:09:02,380 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:09:02" (1/1) ...
[2023-12-02 15:09:02,385 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:09:02" (1/1) ...
[2023-12-02 15:09:02,389 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:09:02" (1/1) ...
[2023-12-02 15:09:02,390 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:09:02" (1/1) ...
[2023-12-02 15:09:02,391 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:09:02" (1/1) ...
[2023-12-02 15:09:02,394 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-02 15:09:02,395 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-02 15:09:02,395 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-02 15:09:02,395 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-02 15:09:02,396 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:09:02" (1/1) ...
[2023-12-02 15:09:02,402 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 15:09:02,415 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 15:09:02,427 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-12-02 15:09:02,429 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-12-02 15:09:02,456 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-02 15:09:02,456 INFO  L130     BoogieDeclarations]: Found specification of procedure thread1
[2023-12-02 15:09:02,456 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread1
[2023-12-02 15:09:02,456 INFO  L130     BoogieDeclarations]: Found specification of procedure thread2
[2023-12-02 15:09:02,456 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread2
[2023-12-02 15:09:02,456 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-12-02 15:09:02,457 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-12-02 15:09:02,457 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-12-02 15:09:02,457 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2023-12-02 15:09:02,457 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2023-12-02 15:09:02,457 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-02 15:09:02,457 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-02 15:09:02,457 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-12-02 15:09:02,457 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-12-02 15:09:02,459 WARN  L213             CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-12-02 15:09:02,548 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-02 15:09:02,550 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-02 15:09:02,716 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-02 15:09:02,872 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-02 15:09:02,873 INFO  L309             CfgBuilder]: Removed 2 assume(true) statements.
[2023-12-02 15:09:02,873 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:09:02 BoogieIcfgContainer
[2023-12-02 15:09:02,873 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-02 15:09:02,876 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-02 15:09:02,876 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-02 15:09:02,880 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-02 15:09:02,880 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:09:02" (1/3) ...
[2023-12-02 15:09:02,880 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2d5735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:09:02, skipping insertion in model container
[2023-12-02 15:09:02,881 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:09:02" (2/3) ...
[2023-12-02 15:09:02,881 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2d5735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:09:02, skipping insertion in model container
[2023-12-02 15:09:02,881 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:09:02" (3/3) ...
[2023-12-02 15:09:02,882 INFO  L112   eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c
[2023-12-02 15:09:02,891 WARN  L145   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2023-12-02 15:09:02,902 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-02 15:09:02,902 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations.
[2023-12-02 15:09:02,903 INFO  L514   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-12-02 15:09:02,968 INFO  L144    ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-12-02 15:09:02,997 INFO  L113   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 30 transitions, 74 flow
[2023-12-02 15:09:03,032 INFO  L135   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result  has 212 states, 188 states have (on average 2.7074468085106385) internal successors, (509), 211 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:03,047 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-02 15:09:03,053 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@3ed1be38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-02 15:09:03,053 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 18 error locations.
[2023-12-02 15:09:03,055 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 212 states, 188 states have (on average 2.7074468085106385) internal successors, (509), 211 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:03,060 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2023-12-02 15:09:03,060 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:03,060 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2023-12-02 15:09:03,061 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:03,066 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:03,066 INFO  L85        PathProgramCache]: Analyzing trace with hash 275620399, now seen corresponding path program 1 times
[2023-12-02 15:09:03,076 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:03,076 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760474213]
[2023-12-02 15:09:03,076 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:03,077 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:03,185 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:03,305 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:03,305 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:03,305 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760474213]
[2023-12-02 15:09:03,306 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760474213] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 15:09:03,306 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 15:09:03,306 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-12-02 15:09:03,308 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340363398]
[2023-12-02 15:09:03,309 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 15:09:03,313 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 15:09:03,313 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:03,340 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 15:09:03,341 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 15:09:03,344 INFO  L87              Difference]: Start difference. First operand  has 212 states, 188 states have (on average 2.7074468085106385) internal successors, (509), 211 states have internal predecessors, (509), 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) Second operand  has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:03,426 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:03,426 INFO  L93              Difference]: Finished difference Result 216 states and 514 transitions.
[2023-12-02 15:09:03,428 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 15:09:03,429 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5
[2023-12-02 15:09:03,429 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:03,441 INFO  L225             Difference]: With dead ends: 216
[2023-12-02 15:09:03,441 INFO  L226             Difference]: Without dead ends: 202
[2023-12-02 15:09:03,443 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 15:09:03,446 INFO  L413           NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:03,448 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 12 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-02 15:09:03,465 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 202 states.
[2023-12-02 15:09:03,495 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202.
[2023-12-02 15:09:03,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 202 states, 183 states have (on average 2.639344262295082) internal successors, (483), 201 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:03,501 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 483 transitions.
[2023-12-02 15:09:03,502 INFO  L78                 Accepts]: Start accepts. Automaton has 202 states and 483 transitions. Word has length 5
[2023-12-02 15:09:03,502 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:03,502 INFO  L495      AbstractCegarLoop]: Abstraction has 202 states and 483 transitions.
[2023-12-02 15:09:03,503 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:03,503 INFO  L276                IsEmpty]: Start isEmpty. Operand 202 states and 483 transitions.
[2023-12-02 15:09:03,503 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2023-12-02 15:09:03,503 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:03,504 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-12-02 15:09:03,504 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-02 15:09:03,504 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:03,505 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:03,505 INFO  L85        PathProgramCache]: Analyzing trace with hash -1416758350, now seen corresponding path program 1 times
[2023-12-02 15:09:03,505 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:03,505 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554323024]
[2023-12-02 15:09:03,506 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:03,506 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:03,522 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:03,584 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:03,585 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:03,585 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554323024]
[2023-12-02 15:09:03,585 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554323024] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 15:09:03,585 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 15:09:03,586 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-02 15:09:03,586 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197849778]
[2023-12-02 15:09:03,586 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 15:09:03,587 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-02 15:09:03,587 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:03,588 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-02 15:09:03,588 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-02 15:09:03,588 INFO  L87              Difference]: Start difference. First operand 202 states and 483 transitions. Second operand  has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:03,692 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:03,692 INFO  L93              Difference]: Finished difference Result 250 states and 600 transitions.
[2023-12-02 15:09:03,692 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-02 15:09:03,692 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7
[2023-12-02 15:09:03,693 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:03,695 INFO  L225             Difference]: With dead ends: 250
[2023-12-02 15:09:03,696 INFO  L226             Difference]: Without dead ends: 250
[2023-12-02 15:09:03,696 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-02 15:09:03,698 INFO  L413           NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:03,698 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 11 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-02 15:09:03,700 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 250 states.
[2023-12-02 15:09:03,716 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250.
[2023-12-02 15:09:03,717 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 250 states, 231 states have (on average 2.5974025974025974) internal successors, (600), 249 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:03,720 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 600 transitions.
[2023-12-02 15:09:03,720 INFO  L78                 Accepts]: Start accepts. Automaton has 250 states and 600 transitions. Word has length 7
[2023-12-02 15:09:03,720 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:03,721 INFO  L495      AbstractCegarLoop]: Abstraction has 250 states and 600 transitions.
[2023-12-02 15:09:03,721 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:03,721 INFO  L276                IsEmpty]: Start isEmpty. Operand 250 states and 600 transitions.
[2023-12-02 15:09:03,722 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-12-02 15:09:03,722 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:03,722 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 15:09:03,722 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-02 15:09:03,723 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:03,723 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:03,723 INFO  L85        PathProgramCache]: Analyzing trace with hash -577173624, now seen corresponding path program 1 times
[2023-12-02 15:09:03,723 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:03,724 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926097533]
[2023-12-02 15:09:03,724 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:03,724 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:03,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:03,787 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:03,787 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:03,787 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926097533]
[2023-12-02 15:09:03,788 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926097533] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 15:09:03,788 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 15:09:03,788 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 15:09:03,788 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644348987]
[2023-12-02 15:09:03,788 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 15:09:03,789 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 15:09:03,789 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:03,790 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 15:09:03,790 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 15:09:03,790 INFO  L87              Difference]: Start difference. First operand 250 states and 600 transitions. Second operand  has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:03,820 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:03,820 INFO  L93              Difference]: Finished difference Result 222 states and 531 transitions.
[2023-12-02 15:09:03,821 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 15:09:03,821 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) Word has length 10
[2023-12-02 15:09:03,821 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:03,823 INFO  L225             Difference]: With dead ends: 222
[2023-12-02 15:09:03,824 INFO  L226             Difference]: Without dead ends: 222
[2023-12-02 15:09:03,824 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 15:09:03,825 INFO  L413           NwaCegarLoop]: 6 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:03,826 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 6 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-02 15:09:03,828 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 222 states.
[2023-12-02 15:09:03,839 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222.
[2023-12-02 15:09:03,840 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 222 states, 208 states have (on average 2.5528846153846154) internal successors, (531), 221 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:03,842 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 531 transitions.
[2023-12-02 15:09:03,842 INFO  L78                 Accepts]: Start accepts. Automaton has 222 states and 531 transitions. Word has length 10
[2023-12-02 15:09:03,843 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:03,843 INFO  L495      AbstractCegarLoop]: Abstraction has 222 states and 531 transitions.
[2023-12-02 15:09:03,843 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:03,844 INFO  L276                IsEmpty]: Start isEmpty. Operand 222 states and 531 transitions.
[2023-12-02 15:09:03,845 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-12-02 15:09:03,845 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:03,845 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 15:09:03,845 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-02 15:09:03,845 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:03,846 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:03,846 INFO  L85        PathProgramCache]: Analyzing trace with hash -577173623, now seen corresponding path program 1 times
[2023-12-02 15:09:03,846 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:03,846 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911710014]
[2023-12-02 15:09:03,846 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:03,847 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:03,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:03,916 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:03,916 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:03,917 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911710014]
[2023-12-02 15:09:03,917 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911710014] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 15:09:03,917 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 15:09:03,917 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 15:09:03,918 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335614092]
[2023-12-02 15:09:03,918 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 15:09:03,918 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 15:09:03,918 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:03,919 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 15:09:03,919 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 15:09:03,919 INFO  L87              Difference]: Start difference. First operand 222 states and 531 transitions. Second operand  has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:03,973 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:03,973 INFO  L93              Difference]: Finished difference Result 320 states and 774 transitions.
[2023-12-02 15:09:03,974 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 15:09:03,974 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) Word has length 10
[2023-12-02 15:09:03,974 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:03,978 INFO  L225             Difference]: With dead ends: 320
[2023-12-02 15:09:03,978 INFO  L226             Difference]: Without dead ends: 320
[2023-12-02 15:09:03,978 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 15:09:03,980 INFO  L413           NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:03,980 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 15 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-02 15:09:03,982 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 320 states.
[2023-12-02 15:09:03,996 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 290.
[2023-12-02 15:09:03,997 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 290 states, 276 states have (on average 2.641304347826087) internal successors, (729), 289 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:03,999 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 729 transitions.
[2023-12-02 15:09:04,000 INFO  L78                 Accepts]: Start accepts. Automaton has 290 states and 729 transitions. Word has length 10
[2023-12-02 15:09:04,000 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:04,000 INFO  L495      AbstractCegarLoop]: Abstraction has 290 states and 729 transitions.
[2023-12-02 15:09:04,000 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:04,001 INFO  L276                IsEmpty]: Start isEmpty. Operand 290 states and 729 transitions.
[2023-12-02 15:09:04,002 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-12-02 15:09:04,002 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:04,002 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 15:09:04,002 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-02 15:09:04,003 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:04,003 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:04,003 INFO  L85        PathProgramCache]: Analyzing trace with hash -4085471, now seen corresponding path program 1 times
[2023-12-02 15:09:04,003 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:04,004 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690368089]
[2023-12-02 15:09:04,004 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:04,004 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:04,017 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:04,051 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:04,052 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:04,052 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690368089]
[2023-12-02 15:09:04,052 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690368089] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 15:09:04,052 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 15:09:04,052 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 15:09:04,053 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538017403]
[2023-12-02 15:09:04,053 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 15:09:04,053 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-02 15:09:04,053 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:04,054 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-02 15:09:04,054 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 15:09:04,054 INFO  L87              Difference]: Start difference. First operand 290 states and 729 transitions. Second operand  has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:04,084 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:04,084 INFO  L93              Difference]: Finished difference Result 272 states and 683 transitions.
[2023-12-02 15:09:04,085 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-02 15:09:04,085 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) Word has length 10
[2023-12-02 15:09:04,085 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:04,088 INFO  L225             Difference]: With dead ends: 272
[2023-12-02 15:09:04,088 INFO  L226             Difference]: Without dead ends: 272
[2023-12-02 15:09:04,088 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-02 15:09:04,089 INFO  L413           NwaCegarLoop]: 6 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:04,090 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 6 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-02 15:09:04,091 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 272 states.
[2023-12-02 15:09:04,102 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272.
[2023-12-02 15:09:04,103 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 272 states, 261 states have (on average 2.6168582375478926) internal successors, (683), 271 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:04,105 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 683 transitions.
[2023-12-02 15:09:04,105 INFO  L78                 Accepts]: Start accepts. Automaton has 272 states and 683 transitions. Word has length 10
[2023-12-02 15:09:04,105 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:04,106 INFO  L495      AbstractCegarLoop]: Abstraction has 272 states and 683 transitions.
[2023-12-02 15:09:04,106 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:04,106 INFO  L276                IsEmpty]: Start isEmpty. Operand 272 states and 683 transitions.
[2023-12-02 15:09:04,107 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-12-02 15:09:04,107 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:04,107 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 15:09:04,108 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-12-02 15:09:04,108 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:04,108 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:04,109 INFO  L85        PathProgramCache]: Analyzing trace with hash -4085470, now seen corresponding path program 1 times
[2023-12-02 15:09:04,109 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:04,109 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778647046]
[2023-12-02 15:09:04,109 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:04,109 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:04,123 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:04,165 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:04,165 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:04,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778647046]
[2023-12-02 15:09:04,166 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778647046] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 15:09:04,166 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110897754]
[2023-12-02 15:09:04,166 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:04,166 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:04,166 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 15:09:04,171 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 15:09:04,179 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-02 15:09:04,246 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:04,248 INFO  L262         TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-02 15:09:04,253 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 15:09:04,299 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:04,299 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 15:09:04,329 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:04,330 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110897754] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-02 15:09:04,330 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1493587857]
[2023-12-02 15:09:04,337 FATAL L?                        ?]: Ignoring exception!
java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
	at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.<init>(PathProgram.java:235)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.<init>(SifaRunner.java:91)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:154)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2023-12-02 15:09:04,339 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 15:09:04,339 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5
[2023-12-02 15:09:04,339 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131090880]
[2023-12-02 15:09:04,339 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 15:09:04,339 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-02 15:09:04,340 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:04,340 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-02 15:09:04,340 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2023-12-02 15:09:04,340 INFO  L87              Difference]: Start difference. First operand 272 states and 683 transitions. Second operand  has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:04,476 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:04,476 INFO  L93              Difference]: Finished difference Result 804 states and 1965 transitions.
[2023-12-02 15:09:04,477 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-02 15:09:04,477 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) Word has length 10
[2023-12-02 15:09:04,477 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:04,484 INFO  L225             Difference]: With dead ends: 804
[2023-12-02 15:09:04,484 INFO  L226             Difference]: Without dead ends: 782
[2023-12-02 15:09:04,484 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2023-12-02 15:09:04,485 INFO  L413           NwaCegarLoop]: 14 mSDtfsCounter, 95 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:04,485 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 46 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-02 15:09:04,488 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 782 states.
[2023-12-02 15:09:04,508 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 610.
[2023-12-02 15:09:04,509 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 610 states, 599 states have (on average 2.7946577629382303) internal successors, (1674), 609 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:04,513 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1674 transitions.
[2023-12-02 15:09:04,514 INFO  L78                 Accepts]: Start accepts. Automaton has 610 states and 1674 transitions. Word has length 10
[2023-12-02 15:09:04,514 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:04,514 INFO  L495      AbstractCegarLoop]: Abstraction has 610 states and 1674 transitions.
[2023-12-02 15:09:04,514 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:04,514 INFO  L276                IsEmpty]: Start isEmpty. Operand 610 states and 1674 transitions.
[2023-12-02 15:09:04,515 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2023-12-02 15:09:04,515 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:04,516 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 15:09:04,522 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-02 15:09:04,718 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:04,718 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:04,719 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:04,719 INFO  L85        PathProgramCache]: Analyzing trace with hash 1275776551, now seen corresponding path program 1 times
[2023-12-02 15:09:04,719 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:04,719 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978647120]
[2023-12-02 15:09:04,719 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:04,719 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:04,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:04,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:04,829 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:04,829 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978647120]
[2023-12-02 15:09:04,829 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978647120] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 15:09:04,829 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59830122]
[2023-12-02 15:09:04,829 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:04,830 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:04,830 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 15:09:04,831 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 15:09:04,835 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-02 15:09:04,902 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:04,903 INFO  L262         TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-02 15:09:04,904 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 15:09:04,959 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:04,959 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 15:09:05,008 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:05,009 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [59830122] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-02 15:09:05,009 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-12-02 15:09:05,009 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9
[2023-12-02 15:09:05,010 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471074932]
[2023-12-02 15:09:05,010 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 15:09:05,010 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-02 15:09:05,010 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:05,010 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-02 15:09:05,011 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90
[2023-12-02 15:09:05,011 INFO  L87              Difference]: Start difference. First operand 610 states and 1674 transitions. Second operand  has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:05,065 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:05,065 INFO  L93              Difference]: Finished difference Result 546 states and 1491 transitions.
[2023-12-02 15:09:05,066 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-02 15:09:05,066 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) Word has length 12
[2023-12-02 15:09:05,066 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:05,071 INFO  L225             Difference]: With dead ends: 546
[2023-12-02 15:09:05,071 INFO  L226             Difference]: Without dead ends: 546
[2023-12-02 15:09:05,071 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90
[2023-12-02 15:09:05,072 INFO  L413           NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:05,072 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 20 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-02 15:09:05,074 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 546 states.
[2023-12-02 15:09:05,090 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 544.
[2023-12-02 15:09:05,091 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 544 states, 537 states have (on average 2.7709497206703912) internal successors, (1488), 543 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:05,095 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1488 transitions.
[2023-12-02 15:09:05,095 INFO  L78                 Accepts]: Start accepts. Automaton has 544 states and 1488 transitions. Word has length 12
[2023-12-02 15:09:05,095 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:05,095 INFO  L495      AbstractCegarLoop]: Abstraction has 544 states and 1488 transitions.
[2023-12-02 15:09:05,095 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:05,096 INFO  L276                IsEmpty]: Start isEmpty. Operand 544 states and 1488 transitions.
[2023-12-02 15:09:05,096 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2023-12-02 15:09:05,096 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:05,097 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 15:09:05,102 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-12-02 15:09:05,302 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:05,302 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:05,303 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:05,303 INFO  L85        PathProgramCache]: Analyzing trace with hash 1275776552, now seen corresponding path program 1 times
[2023-12-02 15:09:05,303 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:05,303 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341659773]
[2023-12-02 15:09:05,303 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:05,303 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:05,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:05,386 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:05,386 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:05,386 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341659773]
[2023-12-02 15:09:05,387 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341659773] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 15:09:05,387 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580878366]
[2023-12-02 15:09:05,387 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:05,387 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:05,387 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 15:09:05,388 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 15:09:05,395 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-02 15:09:05,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:05,461 INFO  L262         TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-02 15:09:05,462 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 15:09:05,499 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-02 15:09:05,499 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 15:09:05,530 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-02 15:09:05,531 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [580878366] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-02 15:09:05,531 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2030376486]
[2023-12-02 15:09:05,532 FATAL L?                        ?]: Ignoring exception!
java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
	at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.<init>(PathProgram.java:235)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.<init>(SifaRunner.java:91)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:154)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2023-12-02 15:09:05,532 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 15:09:05,532 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5
[2023-12-02 15:09:05,532 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568994213]
[2023-12-02 15:09:05,532 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 15:09:05,533 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-02 15:09:05,533 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:05,533 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-02 15:09:05,533 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-12-02 15:09:05,534 INFO  L87              Difference]: Start difference. First operand 544 states and 1488 transitions. Second operand  has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:05,656 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:05,656 INFO  L93              Difference]: Finished difference Result 738 states and 2002 transitions.
[2023-12-02 15:09:05,656 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-02 15:09:05,657 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) Word has length 12
[2023-12-02 15:09:05,657 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:05,662 INFO  L225             Difference]: With dead ends: 738
[2023-12-02 15:09:05,663 INFO  L226             Difference]: Without dead ends: 684
[2023-12-02 15:09:05,663 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2023-12-02 15:09:05,664 INFO  L413           NwaCegarLoop]: 8 mSDtfsCounter, 54 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:05,664 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 28 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-02 15:09:05,666 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 684 states.
[2023-12-02 15:09:05,678 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 328.
[2023-12-02 15:09:05,680 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 328 states, 325 states have (on average 2.6307692307692307) internal successors, (855), 327 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:05,681 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 855 transitions.
[2023-12-02 15:09:05,682 INFO  L78                 Accepts]: Start accepts. Automaton has 328 states and 855 transitions. Word has length 12
[2023-12-02 15:09:05,682 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:05,682 INFO  L495      AbstractCegarLoop]: Abstraction has 328 states and 855 transitions.
[2023-12-02 15:09:05,682 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:05,682 INFO  L276                IsEmpty]: Start isEmpty. Operand 328 states and 855 transitions.
[2023-12-02 15:09:05,683 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2023-12-02 15:09:05,683 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:05,683 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1]
[2023-12-02 15:09:05,688 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-12-02 15:09:05,883 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:05,884 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:05,884 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:05,884 INFO  L85        PathProgramCache]: Analyzing trace with hash 368840228, now seen corresponding path program 1 times
[2023-12-02 15:09:05,884 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:05,884 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771705142]
[2023-12-02 15:09:05,884 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:05,884 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:05,894 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:05,943 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:05,944 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:05,944 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771705142]
[2023-12-02 15:09:05,944 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771705142] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 15:09:05,944 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153171024]
[2023-12-02 15:09:05,944 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:05,944 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:05,944 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 15:09:05,945 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 15:09:05,947 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-02 15:09:06,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:06,011 INFO  L262         TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-02 15:09:06,012 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 15:09:06,043 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:06,043 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 15:09:06,043 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [153171024] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 15:09:06,043 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-02 15:09:06,043 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7
[2023-12-02 15:09:06,044 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376201399]
[2023-12-02 15:09:06,044 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 15:09:06,044 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-02 15:09:06,044 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:06,044 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-02 15:09:06,044 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2023-12-02 15:09:06,045 INFO  L87              Difference]: Start difference. First operand 328 states and 855 transitions. Second operand  has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:06,148 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:06,148 INFO  L93              Difference]: Finished difference Result 318 states and 799 transitions.
[2023-12-02 15:09:06,148 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-02 15:09:06,148 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) Word has length 12
[2023-12-02 15:09:06,148 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:06,151 INFO  L225             Difference]: With dead ends: 318
[2023-12-02 15:09:06,151 INFO  L226             Difference]: Without dead ends: 318
[2023-12-02 15:09:06,151 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2023-12-02 15:09:06,152 INFO  L413           NwaCegarLoop]: 5 mSDtfsCounter, 39 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:06,152 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 12 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-02 15:09:06,154 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 318 states.
[2023-12-02 15:09:06,161 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318.
[2023-12-02 15:09:06,162 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 318 states, 316 states have (on average 2.528481012658228) internal successors, (799), 317 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:06,164 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 799 transitions.
[2023-12-02 15:09:06,164 INFO  L78                 Accepts]: Start accepts. Automaton has 318 states and 799 transitions. Word has length 12
[2023-12-02 15:09:06,164 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:06,164 INFO  L495      AbstractCegarLoop]: Abstraction has 318 states and 799 transitions.
[2023-12-02 15:09:06,165 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:06,165 INFO  L276                IsEmpty]: Start isEmpty. Operand 318 states and 799 transitions.
[2023-12-02 15:09:06,165 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2023-12-02 15:09:06,165 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:06,165 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1]
[2023-12-02 15:09:06,170 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-12-02 15:09:06,370 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:06,371 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:06,371 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:06,371 INFO  L85        PathProgramCache]: Analyzing trace with hash -1450854516, now seen corresponding path program 1 times
[2023-12-02 15:09:06,371 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:06,371 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224965556]
[2023-12-02 15:09:06,371 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:06,371 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:06,381 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:06,424 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:06,424 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:06,424 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224965556]
[2023-12-02 15:09:06,425 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224965556] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 15:09:06,425 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014267662]
[2023-12-02 15:09:06,425 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:06,425 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:06,425 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 15:09:06,426 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 15:09:06,438 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-02 15:09:06,480 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:06,481 INFO  L262         TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-02 15:09:06,482 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 15:09:06,513 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:06,513 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 15:09:06,555 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:06,556 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014267662] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-02 15:09:06,556 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [261687429]
[2023-12-02 15:09:06,556 FATAL L?                        ?]: Ignoring exception!
java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
	at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.<init>(PathProgram.java:235)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.<init>(SifaRunner.java:91)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:154)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2023-12-02 15:09:06,557 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 15:09:06,557 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11
[2023-12-02 15:09:06,557 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918150597]
[2023-12-02 15:09:06,557 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 15:09:06,557 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-12-02 15:09:06,557 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:06,558 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-12-02 15:09:06,558 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132
[2023-12-02 15:09:06,558 INFO  L87              Difference]: Start difference. First operand 318 states and 799 transitions. Second operand  has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:06,750 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:06,750 INFO  L93              Difference]: Finished difference Result 654 states and 1628 transitions.
[2023-12-02 15:09:06,750 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-02 15:09:06,750 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 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) Word has length 13
[2023-12-02 15:09:06,751 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:06,755 INFO  L225             Difference]: With dead ends: 654
[2023-12-02 15:09:06,755 INFO  L226             Difference]: Without dead ends: 654
[2023-12-02 15:09:06,756 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240
[2023-12-02 15:09:06,756 INFO  L413           NwaCegarLoop]: 4 mSDtfsCounter, 82 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:06,757 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 29 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-02 15:09:06,759 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 654 states.
[2023-12-02 15:09:06,774 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654.
[2023-12-02 15:09:06,776 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 654 states, 652 states have (on average 2.496932515337423) internal successors, (1628), 653 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:06,780 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1628 transitions.
[2023-12-02 15:09:06,780 INFO  L78                 Accepts]: Start accepts. Automaton has 654 states and 1628 transitions. Word has length 13
[2023-12-02 15:09:06,780 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:06,780 INFO  L495      AbstractCegarLoop]: Abstraction has 654 states and 1628 transitions.
[2023-12-02 15:09:06,780 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:06,780 INFO  L276                IsEmpty]: Start isEmpty. Operand 654 states and 1628 transitions.
[2023-12-02 15:09:06,782 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2023-12-02 15:09:06,782 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:06,782 INFO  L195           NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1]
[2023-12-02 15:09:06,788 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-12-02 15:09:06,982 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-12-02 15:09:06,983 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:06,983 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:06,983 INFO  L85        PathProgramCache]: Analyzing trace with hash -152133456, now seen corresponding path program 2 times
[2023-12-02 15:09:06,983 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:06,984 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012379801]
[2023-12-02 15:09:06,984 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:06,984 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:07,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:07,080 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:07,080 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:07,080 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012379801]
[2023-12-02 15:09:07,080 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012379801] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 15:09:07,080 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723026115]
[2023-12-02 15:09:07,081 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-12-02 15:09:07,081 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:07,081 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 15:09:07,082 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 15:09:07,086 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-12-02 15:09:07,153 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2023-12-02 15:09:07,153 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-02 15:09:07,154 INFO  L262         TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-02 15:09:07,155 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 15:09:07,196 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:07,196 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 15:09:07,287 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:07,288 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [723026115] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-02 15:09:07,288 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1383581603]
[2023-12-02 15:09:07,289 FATAL L?                        ?]: Ignoring exception!
java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
	at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.<init>(PathProgram.java:235)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.<init>(SifaRunner.java:91)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:154)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2023-12-02 15:09:07,290 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 15:09:07,290 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11
[2023-12-02 15:09:07,290 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056879055]
[2023-12-02 15:09:07,290 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 15:09:07,291 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-12-02 15:09:07,291 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:07,292 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-12-02 15:09:07,292 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156
[2023-12-02 15:09:07,292 INFO  L87              Difference]: Start difference. First operand 654 states and 1628 transitions. Second operand  has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:07,442 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:07,442 INFO  L93              Difference]: Finished difference Result 1586 states and 3950 transitions.
[2023-12-02 15:09:07,442 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-12-02 15:09:07,443 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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) Word has length 25
[2023-12-02 15:09:07,443 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:07,452 INFO  L225             Difference]: With dead ends: 1586
[2023-12-02 15:09:07,452 INFO  L226             Difference]: Without dead ends: 1586
[2023-12-02 15:09:07,453 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156
[2023-12-02 15:09:07,453 INFO  L413           NwaCegarLoop]: 12 mSDtfsCounter, 179 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:07,453 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 77 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-02 15:09:07,457 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1586 states.
[2023-12-02 15:09:07,478 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 942.
[2023-12-02 15:09:07,480 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 942 states, 940 states have (on average 2.5287234042553193) internal successors, (2377), 941 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:07,484 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2377 transitions.
[2023-12-02 15:09:07,484 INFO  L78                 Accepts]: Start accepts. Automaton has 942 states and 2377 transitions. Word has length 25
[2023-12-02 15:09:07,484 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:07,498 INFO  L495      AbstractCegarLoop]: Abstraction has 942 states and 2377 transitions.
[2023-12-02 15:09:07,499 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:07,499 INFO  L276                IsEmpty]: Start isEmpty. Operand 942 states and 2377 transitions.
[2023-12-02 15:09:07,500 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2023-12-02 15:09:07,500 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:07,500 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1]
[2023-12-02 15:09:07,504 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-12-02 15:09:07,700 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:07,701 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:07,701 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:07,701 INFO  L85        PathProgramCache]: Analyzing trace with hash -1016992450, now seen corresponding path program 2 times
[2023-12-02 15:09:07,701 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:07,701 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613490421]
[2023-12-02 15:09:07,701 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:07,701 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:07,714 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:07,844 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:07,844 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:07,844 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613490421]
[2023-12-02 15:09:07,844 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613490421] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 15:09:07,844 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164974032]
[2023-12-02 15:09:07,844 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-12-02 15:09:07,844 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:07,844 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 15:09:07,845 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 15:09:07,846 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-12-02 15:09:07,908 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s)
[2023-12-02 15:09:07,908 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-02 15:09:07,909 INFO  L262         TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-02 15:09:07,910 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 15:09:07,971 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2023-12-02 15:09:07,971 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 15:09:08,025 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2023-12-02 15:09:08,025 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [164974032] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-02 15:09:08,025 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1263149869]
[2023-12-02 15:09:08,026 FATAL L?                        ?]: Ignoring exception!
java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
	at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.<init>(PathProgram.java:235)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.<init>(SifaRunner.java:91)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:154)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2023-12-02 15:09:08,026 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 15:09:08,026 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14
[2023-12-02 15:09:08,026 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694197918]
[2023-12-02 15:09:08,026 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 15:09:08,028 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-12-02 15:09:08,028 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:08,028 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-12-02 15:09:08,029 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210
[2023-12-02 15:09:08,029 INFO  L87              Difference]: Start difference. First operand 942 states and 2377 transitions. Second operand  has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:08,352 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:08,352 INFO  L93              Difference]: Finished difference Result 1136 states and 2783 transitions.
[2023-12-02 15:09:08,353 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-12-02 15:09:08,353 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 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) Word has length 28
[2023-12-02 15:09:08,353 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:08,361 INFO  L225             Difference]: With dead ends: 1136
[2023-12-02 15:09:08,361 INFO  L226             Difference]: Without dead ends: 1136
[2023-12-02 15:09:08,362 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702
[2023-12-02 15:09:08,362 INFO  L413           NwaCegarLoop]: 0 mSDtfsCounter, 174 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:08,363 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 0 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-02 15:09:08,366 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1136 states.
[2023-12-02 15:09:08,383 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 560.
[2023-12-02 15:09:08,384 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 560 states, 559 states have (on average 2.402504472271914) internal successors, (1343), 559 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:08,387 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1343 transitions.
[2023-12-02 15:09:08,387 INFO  L78                 Accepts]: Start accepts. Automaton has 560 states and 1343 transitions. Word has length 28
[2023-12-02 15:09:08,387 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:08,387 INFO  L495      AbstractCegarLoop]: Abstraction has 560 states and 1343 transitions.
[2023-12-02 15:09:08,388 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:08,388 INFO  L276                IsEmpty]: Start isEmpty. Operand 560 states and 1343 transitions.
[2023-12-02 15:09:08,390 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2023-12-02 15:09:08,390 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:08,390 INFO  L195           NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1]
[2023-12-02 15:09:08,395 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-12-02 15:09:08,592 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:08,592 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:08,592 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:08,592 INFO  L85        PathProgramCache]: Analyzing trace with hash 1925162608, now seen corresponding path program 3 times
[2023-12-02 15:09:08,593 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:08,593 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041450470]
[2023-12-02 15:09:08,593 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:08,593 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:08,613 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:08,818 INFO  L134       CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:08,818 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:08,818 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041450470]
[2023-12-02 15:09:08,819 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041450470] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 15:09:08,819 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844182714]
[2023-12-02 15:09:08,819 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-12-02 15:09:08,819 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:08,819 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 15:09:08,820 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 15:09:08,822 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-12-02 15:09:08,896 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-12-02 15:09:08,896 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-02 15:09:08,897 INFO  L262         TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-02 15:09:08,900 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 15:09:08,986 INFO  L134       CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:08,986 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 15:09:09,226 INFO  L134       CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:09,227 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844182714] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-02 15:09:09,227 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1565490949]
[2023-12-02 15:09:09,227 FATAL L?                        ?]: Ignoring exception!
java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
	at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.<init>(PathProgram.java:235)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.<init>(SifaRunner.java:91)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:154)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2023-12-02 15:09:09,228 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 15:09:09,228 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23
[2023-12-02 15:09:09,228 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958654281]
[2023-12-02 15:09:09,228 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 15:09:09,229 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2023-12-02 15:09:09,229 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:09,230 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2023-12-02 15:09:09,230 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600
[2023-12-02 15:09:09,230 INFO  L87              Difference]: Start difference. First operand 560 states and 1343 transitions. Second operand  has 25 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:09,519 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:09,519 INFO  L93              Difference]: Finished difference Result 2222 states and 5438 transitions.
[2023-12-02 15:09:09,519 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2023-12-02 15:09:09,520 INFO  L78                 Accepts]: Start accepts. Automaton has  has 25 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 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) Word has length 55
[2023-12-02 15:09:09,520 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:09,533 INFO  L225             Difference]: With dead ends: 2222
[2023-12-02 15:09:09,533 INFO  L226             Difference]: Without dead ends: 2222
[2023-12-02 15:09:09,533 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600
[2023-12-02 15:09:09,534 INFO  L413           NwaCegarLoop]: 6 mSDtfsCounter, 393 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:09,534 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 98 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-02 15:09:09,538 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2222 states.
[2023-12-02 15:09:09,561 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1160.
[2023-12-02 15:09:09,564 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1160 states, 1159 states have (on average 2.4012079378774804) internal successors, (2783), 1159 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:09,567 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 2783 transitions.
[2023-12-02 15:09:09,567 INFO  L78                 Accepts]: Start accepts. Automaton has 1160 states and 2783 transitions. Word has length 55
[2023-12-02 15:09:09,568 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:09,568 INFO  L495      AbstractCegarLoop]: Abstraction has 1160 states and 2783 transitions.
[2023-12-02 15:09:09,568 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 25 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:09,568 INFO  L276                IsEmpty]: Start isEmpty. Operand 1160 states and 2783 transitions.
[2023-12-02 15:09:09,570 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2023-12-02 15:09:09,571 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:09,571 INFO  L195           NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1]
[2023-12-02 15:09:09,576 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-12-02 15:09:09,771 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-12-02 15:09:09,772 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:09,772 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:09,772 INFO  L85        PathProgramCache]: Analyzing trace with hash -1912864272, now seen corresponding path program 4 times
[2023-12-02 15:09:09,772 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:09,772 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949968784]
[2023-12-02 15:09:09,773 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:09,773 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:09,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:10,379 INFO  L134       CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:10,379 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:10,379 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949968784]
[2023-12-02 15:09:10,379 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949968784] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 15:09:10,379 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806796036]
[2023-12-02 15:09:10,379 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2023-12-02 15:09:10,379 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:10,380 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 15:09:10,380 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 15:09:10,383 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-12-02 15:09:10,466 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:10,468 INFO  L262         TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 25 conjunts are in the unsatisfiable core
[2023-12-02 15:09:10,472 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 15:09:10,629 INFO  L134       CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:10,629 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 15:09:11,316 INFO  L134       CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:11,316 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [806796036] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-02 15:09:11,316 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1243615303]
[2023-12-02 15:09:11,317 FATAL L?                        ?]: Ignoring exception!
java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
	at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.<init>(PathProgram.java:235)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.<init>(SifaRunner.java:91)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:154)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2023-12-02 15:09:11,317 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 15:09:11,317 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47
[2023-12-02 15:09:11,317 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353356914]
[2023-12-02 15:09:11,317 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 15:09:11,318 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 49 states
[2023-12-02 15:09:11,318 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:11,320 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants.
[2023-12-02 15:09:11,321 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352
[2023-12-02 15:09:11,321 INFO  L87              Difference]: Start difference. First operand 1160 states and 2783 transitions. Second operand  has 49 states, 48 states have (on average 4.895833333333333) internal successors, (235), 48 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:12,085 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:12,085 INFO  L93              Difference]: Finished difference Result 6662 states and 16418 transitions.
[2023-12-02 15:09:12,085 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. 
[2023-12-02 15:09:12,086 INFO  L78                 Accepts]: Start accepts. Automaton has  has 49 states, 48 states have (on average 4.895833333333333) internal successors, (235), 48 states have internal predecessors, (235), 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) Word has length 115
[2023-12-02 15:09:12,086 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:12,121 INFO  L225             Difference]: With dead ends: 6662
[2023-12-02 15:09:12,121 INFO  L226             Difference]: Without dead ends: 6662
[2023-12-02 15:09:12,122 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352
[2023-12-02 15:09:12,122 INFO  L413           NwaCegarLoop]: 6 mSDtfsCounter, 1053 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:12,122 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 198 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-12-02 15:09:12,131 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6662 states.
[2023-12-02 15:09:12,204 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6662 to 2360.
[2023-12-02 15:09:12,211 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2360 states, 2359 states have (on average 2.400593471810089) internal successors, (5663), 2359 states have internal predecessors, (5663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:12,218 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 5663 transitions.
[2023-12-02 15:09:12,218 INFO  L78                 Accepts]: Start accepts. Automaton has 2360 states and 5663 transitions. Word has length 115
[2023-12-02 15:09:12,219 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:12,219 INFO  L495      AbstractCegarLoop]: Abstraction has 2360 states and 5663 transitions.
[2023-12-02 15:09:12,219 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 49 states, 48 states have (on average 4.895833333333333) internal successors, (235), 48 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:12,219 INFO  L276                IsEmpty]: Start isEmpty. Operand 2360 states and 5663 transitions.
[2023-12-02 15:09:12,227 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 236
[2023-12-02 15:09:12,227 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:12,227 INFO  L195           NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1]
[2023-12-02 15:09:12,233 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-12-02 15:09:12,428 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-12-02 15:09:12,429 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:12,429 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:12,429 INFO  L85        PathProgramCache]: Analyzing trace with hash 99481840, now seen corresponding path program 5 times
[2023-12-02 15:09:12,429 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:12,429 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220862771]
[2023-12-02 15:09:12,430 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:12,430 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:12,508 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:14,476 INFO  L134       CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:14,476 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:14,476 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220862771]
[2023-12-02 15:09:14,476 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220862771] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 15:09:14,476 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719598820]
[2023-12-02 15:09:14,476 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-12-02 15:09:14,477 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:14,477 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 15:09:14,478 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 15:09:14,483 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-12-02 15:09:14,698 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s)
[2023-12-02 15:09:14,698 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-02 15:09:14,701 INFO  L262         TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 49 conjunts are in the unsatisfiable core
[2023-12-02 15:09:14,708 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 15:09:14,990 INFO  L134       CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:14,990 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 15:09:17,378 INFO  L134       CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:17,379 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [719598820] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-02 15:09:17,379 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1407399803]
[2023-12-02 15:09:17,379 FATAL L?                        ?]: Ignoring exception!
java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
	at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.<init>(PathProgram.java:235)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.<init>(SifaRunner.java:91)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:154)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2023-12-02 15:09:17,379 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 15:09:17,380 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95
[2023-12-02 15:09:17,380 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430166960]
[2023-12-02 15:09:17,380 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 15:09:17,381 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 97 states
[2023-12-02 15:09:17,381 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:17,383 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants.
[2023-12-02 15:09:17,387 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312
[2023-12-02 15:09:17,387 INFO  L87              Difference]: Start difference. First operand 2360 states and 5663 transitions. Second operand  has 97 states, 96 states have (on average 4.947916666666667) internal successors, (475), 96 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:21,434 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:09:21,434 INFO  L93              Difference]: Finished difference Result 22022 states and 54578 transitions.
[2023-12-02 15:09:21,435 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. 
[2023-12-02 15:09:21,435 INFO  L78                 Accepts]: Start accepts. Automaton has  has 97 states, 96 states have (on average 4.947916666666667) internal successors, (475), 96 states have internal predecessors, (475), 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) Word has length 235
[2023-12-02 15:09:21,435 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:09:21,493 INFO  L225             Difference]: With dead ends: 22022
[2023-12-02 15:09:21,494 INFO  L226             Difference]: Without dead ends: 22022
[2023-12-02 15:09:21,496 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312
[2023-12-02 15:09:21,497 INFO  L413           NwaCegarLoop]: 6 mSDtfsCounter, 2187 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2023-12-02 15:09:21,497 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2187 Valid, 386 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2023-12-02 15:09:21,534 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22022 states.
[2023-12-02 15:09:21,801 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22022 to 4760.
[2023-12-02 15:09:21,813 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4760 states, 4759 states have (on average 2.4002941794494643) internal successors, (11423), 4759 states have internal predecessors, (11423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:21,832 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4760 states to 4760 states and 11423 transitions.
[2023-12-02 15:09:21,832 INFO  L78                 Accepts]: Start accepts. Automaton has 4760 states and 11423 transitions. Word has length 235
[2023-12-02 15:09:21,833 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:09:21,833 INFO  L495      AbstractCegarLoop]: Abstraction has 4760 states and 11423 transitions.
[2023-12-02 15:09:21,833 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 97 states, 96 states have (on average 4.947916666666667) internal successors, (475), 96 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:09:21,833 INFO  L276                IsEmpty]: Start isEmpty. Operand 4760 states and 11423 transitions.
[2023-12-02 15:09:21,857 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 476
[2023-12-02 15:09:21,857 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:09:21,857 INFO  L195           NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1]
[2023-12-02 15:09:21,863 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-12-02 15:09:22,063 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:22,064 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:09:22,064 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:09:22,064 INFO  L85        PathProgramCache]: Analyzing trace with hash 204924656, now seen corresponding path program 6 times
[2023-12-02 15:09:22,064 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:09:22,064 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949210708]
[2023-12-02 15:09:22,065 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:09:22,065 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:09:22,225 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:09:28,963 INFO  L134       CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:28,963 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:09:28,963 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949210708]
[2023-12-02 15:09:28,963 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949210708] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 15:09:28,963 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144952687]
[2023-12-02 15:09:28,963 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-12-02 15:09:28,963 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:09:28,963 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 15:09:28,964 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 15:09:28,965 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-12-02 15:09:29,159 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-12-02 15:09:29,159 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-02 15:09:29,167 INFO  L262         TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 97 conjunts are in the unsatisfiable core
[2023-12-02 15:09:29,175 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 15:09:29,668 INFO  L134       CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:29,669 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 15:09:38,168 INFO  L134       CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:09:38,168 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144952687] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-02 15:09:38,169 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [749876324]
[2023-12-02 15:09:38,169 FATAL L?                        ?]: Ignoring exception!
java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
	at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.<init>(PathProgram.java:235)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.<init>(SifaRunner.java:91)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:154)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2023-12-02 15:09:38,169 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 15:09:38,170 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 191
[2023-12-02 15:09:38,170 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564624180]
[2023-12-02 15:09:38,170 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 15:09:38,171 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 193 states
[2023-12-02 15:09:38,171 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:09:38,176 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants.
[2023-12-02 15:09:38,185 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056
[2023-12-02 15:09:38,186 INFO  L87              Difference]: Start difference. First operand 4760 states and 11423 transitions. Second operand  has 193 states, 192 states have (on average 4.973958333333333) internal successors, (955), 192 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:10:12,965 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:10:12,965 INFO  L93              Difference]: Finished difference Result 78662 states and 195698 transitions.
[2023-12-02 15:10:12,965 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. 
[2023-12-02 15:10:12,966 INFO  L78                 Accepts]: Start accepts. Automaton has  has 193 states, 192 states have (on average 4.973958333333333) internal successors, (955), 192 states have internal predecessors, (955), 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) Word has length 475
[2023-12-02 15:10:12,967 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:10:13,121 INFO  L225             Difference]: With dead ends: 78662
[2023-12-02 15:10:13,121 INFO  L226             Difference]: Without dead ends: 78662
[2023-12-02 15:10:13,124 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1043 GetRequests, 852 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056
[2023-12-02 15:10:13,124 INFO  L413           NwaCegarLoop]: 6 mSDtfsCounter, 4917 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 821 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4917 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 821 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time
[2023-12-02 15:10:13,124 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4917 Valid, 770 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [821 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time]
[2023-12-02 15:10:13,213 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 78662 states.
[2023-12-02 15:10:13,675 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 78662 to 9560.
[2023-12-02 15:10:13,691 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9560 states, 9559 states have (on average 2.400146458834606) internal successors, (22943), 9559 states have internal predecessors, (22943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:10:13,705 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9560 states to 9560 states and 22943 transitions.
[2023-12-02 15:10:13,705 INFO  L78                 Accepts]: Start accepts. Automaton has 9560 states and 22943 transitions. Word has length 475
[2023-12-02 15:10:13,706 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:10:13,706 INFO  L495      AbstractCegarLoop]: Abstraction has 9560 states and 22943 transitions.
[2023-12-02 15:10:13,707 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 193 states, 192 states have (on average 4.973958333333333) internal successors, (955), 192 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:10:13,707 INFO  L276                IsEmpty]: Start isEmpty. Operand 9560 states and 22943 transitions.
[2023-12-02 15:10:13,740 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 956
[2023-12-02 15:10:13,740 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:10:13,741 INFO  L195           NwaCegarLoop]: trace histogram [191, 190, 190, 190, 190, 1, 1, 1, 1]
[2023-12-02 15:10:13,746 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-12-02 15:10:13,941 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:10:13,942 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:10:13,942 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:10:13,942 INFO  L85        PathProgramCache]: Analyzing trace with hash 1985790704, now seen corresponding path program 7 times
[2023-12-02 15:10:13,942 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:10:13,942 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179629231]
[2023-12-02 15:10:13,942 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:10:13,942 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:10:14,275 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:10:39,807 INFO  L134       CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:10:39,807 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:10:39,807 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179629231]
[2023-12-02 15:10:39,807 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179629231] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 15:10:39,807 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061389845]
[2023-12-02 15:10:39,807 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2023-12-02 15:10:39,808 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:10:39,808 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 15:10:39,809 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 15:10:39,809 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-12-02 15:10:40,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:10:40,232 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2161 conjuncts, 193 conjunts are in the unsatisfiable core
[2023-12-02 15:10:40,245 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 15:10:41,170 INFO  L134       CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:10:41,170 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 15:11:15,772 INFO  L134       CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:11:15,772 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061389845] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-02 15:11:15,772 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1945245805]
[2023-12-02 15:11:15,773 FATAL L?                        ?]: Ignoring exception!
java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
	at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.<init>(PathProgram.java:235)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.<init>(SifaRunner.java:91)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137)
	at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:154)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2023-12-02 15:11:15,773 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 15:11:15,774 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 383
[2023-12-02 15:11:15,774 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927290751]
[2023-12-02 15:11:15,774 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 15:11:15,777 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 385 states
[2023-12-02 15:11:15,777 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 15:11:15,799 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants.
[2023-12-02 15:11:15,810 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840
[2023-12-02 15:11:15,811 INFO  L87              Difference]: Start difference. First operand 9560 states and 22943 transitions. Second operand  has 385 states, 384 states have (on average 4.986979166666667) internal successors, (1915), 384 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:19:24,383 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 15:19:24,383 INFO  L93              Difference]: Finished difference Result 295622 states and 737138 transitions.
[2023-12-02 15:19:24,384 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 385 states. 
[2023-12-02 15:19:24,384 INFO  L78                 Accepts]: Start accepts. Automaton has  has 385 states, 384 states have (on average 4.986979166666667) internal successors, (1915), 384 states have internal predecessors, (1915), 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) Word has length 955
[2023-12-02 15:19:24,386 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 15:19:25,163 INFO  L225             Difference]: With dead ends: 295622
[2023-12-02 15:19:25,163 INFO  L226             Difference]: Without dead ends: 295622
[2023-12-02 15:19:25,169 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2099 GetRequests, 1716 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 44.4s TimeCoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840
[2023-12-02 15:19:25,169 INFO  L413           NwaCegarLoop]: 6 mSDtfsCounter, 10959 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 3082 mSolverCounterSat, 1832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10959 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 4914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1832 IncrementalHoareTripleChecker+Valid, 3082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2023-12-02 15:19:25,170 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10959 Valid, 1538 Invalid, 4914 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1832 Valid, 3082 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2023-12-02 15:19:25,598 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 295622 states.
[2023-12-02 15:19:27,329 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 295622 to 19160.
[2023-12-02 15:19:27,345 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19160 states, 19159 states have (on average 2.4000730727073436) internal successors, (45983), 19159 states have internal predecessors, (45983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:19:27,376 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19160 states to 19160 states and 45983 transitions.
[2023-12-02 15:19:27,376 INFO  L78                 Accepts]: Start accepts. Automaton has 19160 states and 45983 transitions. Word has length 955
[2023-12-02 15:19:27,377 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 15:19:27,377 INFO  L495      AbstractCegarLoop]: Abstraction has 19160 states and 45983 transitions.
[2023-12-02 15:19:27,378 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 385 states, 384 states have (on average 4.986979166666667) internal successors, (1915), 384 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 15:19:27,378 INFO  L276                IsEmpty]: Start isEmpty. Operand 19160 states and 45983 transitions.
[2023-12-02 15:19:27,422 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1916
[2023-12-02 15:19:27,422 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 15:19:27,423 INFO  L195           NwaCegarLoop]: trace histogram [383, 382, 382, 382, 382, 1, 1, 1, 1]
[2023-12-02 15:19:27,431 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-12-02 15:19:27,623 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-12-02 15:19:27,623 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2023-12-02 15:19:27,623 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 15:19:27,624 INFO  L85        PathProgramCache]: Analyzing trace with hash -520586512, now seen corresponding path program 8 times
[2023-12-02 15:19:27,624 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 15:19:27,624 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524187900]
[2023-12-02 15:19:27,624 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 15:19:27,624 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 15:19:29,114 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 15:21:47,364 INFO  L134       CoverageAnalysis]: Checked inductivity of 364619 backedges. 0 proven. 364619 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:21:47,365 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 15:21:47,365 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524187900]
[2023-12-02 15:21:47,365 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524187900] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 15:21:47,365 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943348128]
[2023-12-02 15:21:47,365 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-12-02 15:21:47,365 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 15:21:47,365 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 15:21:47,366 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 15:21:47,367 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90da3514-daf6-4c7e-b6b1-220bb8f47dca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-12-02 15:21:53,898 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s)
[2023-12-02 15:21:53,898 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-02 15:21:53,956 INFO  L262         TraceCheckSpWp]: Trace formula consists of 4273 conjuncts, 385 conjunts are in the unsatisfiable core
[2023-12-02 15:21:53,980 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 15:21:55,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 364619 backedges. 0 proven. 364619 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 15:21:55,683 INFO  L327         TraceCheckSpWp]: Computing backward predicates...