./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 251696ec6cec82b3ac56ff493f8f4412eaff7e5010650cc9da1e4c426de80d8c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:01:48,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:01:48,976 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:01:48,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:01:48,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:01:49,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:01:49,020 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:01:49,020 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:01:49,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:01:49,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:01:49,023 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:01:49,024 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:01:49,025 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:01:49,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:01:49,027 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:01:49,027 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:01:49,028 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:01:49,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:01:49,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:01:49,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:01:49,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:01:49,036 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:01:49,036 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:01:49,037 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:01:49,038 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:01:49,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:01:49,039 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:01:49,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:01:49,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:01:49,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:01:49,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:01:49,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:01:49,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:01:49,044 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:01:49,045 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:01:49,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:01:49,046 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:01:49,047 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:01:49,047 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:01:49,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:01:49,058 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:01:49,059 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 251696ec6cec82b3ac56ff493f8f4412eaff7e5010650cc9da1e4c426de80d8c [2023-11-06 22:01:49,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:01:49,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:01:49,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:01:49,373 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:01:49,374 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:01:49,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2023-11-06 22:01:53,169 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:01:53,438 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:01:53,439 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2023-11-06 22:01:53,451 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/data/5fcb4cb50/3d0ae11ee3364b4bac0cdf5f336dfcae/FLAG761269ac7 [2023-11-06 22:01:53,472 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/data/5fcb4cb50/3d0ae11ee3364b4bac0cdf5f336dfcae [2023-11-06 22:01:53,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:01:53,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:01:53,480 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:01:53,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:01:53,489 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:01:53,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:01:53" (1/1) ... [2023-11-06 22:01:53,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347aa26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:53, skipping insertion in model container [2023-11-06 22:01:53,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:01:53" (1/1) ... [2023-11-06 22:01:53,529 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:01:53,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:01:53,799 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:01:53,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:01:53,837 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:01:53,837 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:01:53,844 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:01:53,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:53 WrapperNode [2023-11-06 22:01:53,845 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:01:53,846 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:01:53,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:01:53,847 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:01:53,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:53" (1/1) ... [2023-11-06 22:01:53,862 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:53" (1/1) ... [2023-11-06 22:01:53,889 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 109 [2023-11-06 22:01:53,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:01:53,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:01:53,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:01:53,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:01:53,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:53" (1/1) ... [2023-11-06 22:01:53,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:53" (1/1) ... [2023-11-06 22:01:53,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:53" (1/1) ... [2023-11-06 22:01:53,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:53" (1/1) ... [2023-11-06 22:01:53,917 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:53" (1/1) ... [2023-11-06 22:01:53,922 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:53" (1/1) ... [2023-11-06 22:01:53,925 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:53" (1/1) ... [2023-11-06 22:01:53,927 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:53" (1/1) ... [2023-11-06 22:01:53,931 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:01:53,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:01:53,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:01:53,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:01:53,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:53" (1/1) ... [2023-11-06 22:01:53,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:01:53,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:53,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:01:53,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:01:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:01:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:01:54,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:01:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:01:54,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:01:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:01:54,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:01:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:01:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:01:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:01:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:01:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:01:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:01:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:01:54,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:01:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:01:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:01:54,017 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:01:54,132 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:01:54,135 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:01:54,552 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:01:54,624 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:01:54,625 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:01:54,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:54 BoogieIcfgContainer [2023-11-06 22:01:54,628 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:01:54,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:01:54,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:01:54,635 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:01:54,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:01:53" (1/3) ... [2023-11-06 22:01:54,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2113e3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:54, skipping insertion in model container [2023-11-06 22:01:54,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:53" (2/3) ... [2023-11-06 22:01:54,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2113e3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:54, skipping insertion in model container [2023-11-06 22:01:54,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:54" (3/3) ... [2023-11-06 22:01:54,639 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2023-11-06 22:01:54,646 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:01:54,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:01:54,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 22:01:54,655 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:01:54,774 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:01:54,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 175 transitions, 371 flow [2023-11-06 22:01:54,966 INFO L124 PetriNetUnfolderBase]: 12/172 cut-off events. [2023-11-06 22:01:54,966 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:01:54,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 12/172 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 153 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2023-11-06 22:01:54,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 175 transitions, 371 flow [2023-11-06 22:01:54,981 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 148 transitions, 311 flow [2023-11-06 22:01:54,985 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:01:54,997 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 148 transitions, 311 flow [2023-11-06 22:01:55,000 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 148 transitions, 311 flow [2023-11-06 22:01:55,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 148 transitions, 311 flow [2023-11-06 22:01:55,044 INFO L124 PetriNetUnfolderBase]: 11/148 cut-off events. [2023-11-06 22:01:55,044 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:01:55,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 148 events. 11/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 150 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2023-11-06 22:01:55,050 INFO L119 LiptonReduction]: Number of co-enabled transitions 2430 [2023-11-06 22:02:03,927 INFO L134 LiptonReduction]: Checked pairs total: 2562 [2023-11-06 22:02:03,928 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-11-06 22:02:03,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:02:03,958 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@49d94253, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:02:03,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 22:02:03,962 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:02:03,962 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:02:03,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:02:03,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:03,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:02:03,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:02:03,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:03,972 INFO L85 PathProgramCache]: Analyzing trace with hash 22115, now seen corresponding path program 1 times [2023-11-06 22:02:03,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:03,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90844697] [2023-11-06 22:02:03,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:03,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:04,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:04,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90844697] [2023-11-06 22:02:04,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90844697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:04,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:04,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:02:04,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914682083] [2023-11-06 22:02:04,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:04,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:04,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:04,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:04,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:02:04,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 330 [2023-11-06 22:02:04,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:04,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:04,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 330 [2023-11-06 22:02:04,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:05,001 INFO L124 PetriNetUnfolderBase]: 1218/1593 cut-off events. [2023-11-06 22:02:05,002 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-11-06 22:02:05,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3252 conditions, 1593 events. 1218/1593 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6063 event pairs, 577 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 2727. Up to 1562 conditions per place. [2023-11-06 22:02:05,028 INFO L140 encePairwiseOnDemand]: 325/330 looper letters, 26 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-11-06 22:02:05,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 137 flow [2023-11-06 22:02:05,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:05,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:02:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-11-06 22:02:05,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4919191919191919 [2023-11-06 22:02:05,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-11-06 22:02:05,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-11-06 22:02:05,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:05,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-11-06 22:02:05,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:05,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:05,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:05,092 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 75 flow. Second operand 3 states and 487 transitions. [2023-11-06 22:02:05,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 137 flow [2023-11-06 22:02:05,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:02:05,102 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 87 flow [2023-11-06 22:02:05,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-11-06 22:02:05,110 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-06 22:02:05,110 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 87 flow [2023-11-06 22:02:05,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:05,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:05,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:02:05,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:02:05,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:02:05,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:05,113 INFO L85 PathProgramCache]: Analyzing trace with hash 687065, now seen corresponding path program 1 times [2023-11-06 22:02:05,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:05,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341928159] [2023-11-06 22:02:05,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:05,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:05,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:05,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341928159] [2023-11-06 22:02:05,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341928159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:05,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:05,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:02:05,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315206832] [2023-11-06 22:02:05,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:05,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:05,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:05,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:05,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:02:05,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 330 [2023-11-06 22:02:05,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:05,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:05,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 330 [2023-11-06 22:02:05,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:05,531 INFO L124 PetriNetUnfolderBase]: 1218/1592 cut-off events. [2023-11-06 22:02:05,532 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:02:05,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3221 conditions, 1592 events. 1218/1592 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6045 event pairs, 577 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 3197. Up to 1558 conditions per place. [2023-11-06 22:02:05,548 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 25 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-11-06 22:02:05,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 139 flow [2023-11-06 22:02:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:05,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:02:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-11-06 22:02:05,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787878787878786 [2023-11-06 22:02:05,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-11-06 22:02:05,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-11-06 22:02:05,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:05,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-11-06 22:02:05,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 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) [2023-11-06 22:02:05,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:05,560 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:05,561 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 87 flow. Second operand 3 states and 483 transitions. [2023-11-06 22:02:05,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 139 flow [2023-11-06 22:02:05,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 134 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:02:05,563 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 84 flow [2023-11-06 22:02:05,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-11-06 22:02:05,565 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-06 22:02:05,565 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 84 flow [2023-11-06 22:02:05,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:05,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:05,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:02:05,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:02:05,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:02:05,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:05,568 INFO L85 PathProgramCache]: Analyzing trace with hash 687077, now seen corresponding path program 1 times [2023-11-06 22:02:05,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:05,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709617818] [2023-11-06 22:02:05,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:05,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:05,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:05,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709617818] [2023-11-06 22:02:05,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709617818] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:05,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160879308] [2023-11-06 22:02:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:05,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:05,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:05,729 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:05,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:02:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:05,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:02:05,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:05,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:05,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160879308] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:05,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:05,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:02:05,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011839358] [2023-11-06 22:02:05,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:05,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:02:05,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:05,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:02:05,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:02:05,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 330 [2023-11-06 22:02:05,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 84 flow. Second operand has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:05,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:05,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 330 [2023-11-06 22:02:05,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:06,304 INFO L124 PetriNetUnfolderBase]: 1221/1598 cut-off events. [2023-11-06 22:02:06,305 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:02:06,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3242 conditions, 1598 events. 1221/1598 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6132 event pairs, 577 based on Foata normal form. 0/567 useless extension candidates. Maximal degree in co-relation 3197. Up to 1564 conditions per place. [2023-11-06 22:02:06,325 INFO L140 encePairwiseOnDemand]: 326/330 looper letters, 25 selfloop transitions, 9 changer transitions 0/37 dead transitions. [2023-11-06 22:02:06,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 182 flow [2023-11-06 22:02:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:02:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:02:06,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 949 transitions. [2023-11-06 22:02:06,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47929292929292927 [2023-11-06 22:02:06,332 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 949 transitions. [2023-11-06 22:02:06,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 949 transitions. [2023-11-06 22:02:06,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:06,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 949 transitions. [2023-11-06 22:02:06,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 158.16666666666666) internal successors, (949), 6 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:06,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 330.0) internal successors, (2310), 7 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:06,347 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 330.0) internal successors, (2310), 7 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:06,348 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 84 flow. Second operand 6 states and 949 transitions. [2023-11-06 22:02:06,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 182 flow [2023-11-06 22:02:06,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:02:06,353 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 139 flow [2023-11-06 22:02:06,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2023-11-06 22:02:06,356 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2023-11-06 22:02:06,356 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 139 flow [2023-11-06 22:02:06,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:06,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:06,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:02:06,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:02:06,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:06,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:02:06,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:06,566 INFO L85 PathProgramCache]: Analyzing trace with hash 660008358, now seen corresponding path program 1 times [2023-11-06 22:02:06,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:06,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457790946] [2023-11-06 22:02:06,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:06,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:06,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:06,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457790946] [2023-11-06 22:02:06,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457790946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:06,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:06,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:02:06,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709074646] [2023-11-06 22:02:06,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:06,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:06,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:06,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:06,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:02:06,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 330 [2023-11-06 22:02:06,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:06,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:06,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 330 [2023-11-06 22:02:06,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:07,097 INFO L124 PetriNetUnfolderBase]: 1340/1779 cut-off events. [2023-11-06 22:02:07,098 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:02:07,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3635 conditions, 1779 events. 1340/1779 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 7285 event pairs, 580 based on Foata normal form. 0/710 useless extension candidates. Maximal degree in co-relation 3599. Up to 1483 conditions per place. [2023-11-06 22:02:07,117 INFO L140 encePairwiseOnDemand]: 325/330 looper letters, 47 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-11-06 22:02:07,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 272 flow [2023-11-06 22:02:07,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:07,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:02:07,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-11-06 22:02:07,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2023-11-06 22:02:07,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-11-06 22:02:07,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-11-06 22:02:07,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:07,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-11-06 22:02:07,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:07,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:07,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:07,130 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 139 flow. Second operand 3 states and 506 transitions. [2023-11-06 22:02:07,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 272 flow [2023-11-06 22:02:07,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 251 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 22:02:07,135 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 139 flow [2023-11-06 22:02:07,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-11-06 22:02:07,136 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-11-06 22:02:07,137 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 139 flow [2023-11-06 22:02:07,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:07,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:07,138 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:02:07,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:02:07,139 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:02:07,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:07,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1004993553, now seen corresponding path program 2 times [2023-11-06 22:02:07,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:07,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905044459] [2023-11-06 22:02:07,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:07,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:07,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:07,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905044459] [2023-11-06 22:02:07,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905044459] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:07,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428015090] [2023-11-06 22:02:07,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:02:07,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:07,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:07,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:07,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:02:07,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:02:07,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:07,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:02:07,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:02:07,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:02:07,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428015090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:07,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:02:07,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:02:07,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008070560] [2023-11-06 22:02:07,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:07,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:07,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:07,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:07,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:02:07,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 330 [2023-11-06 22:02:07,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:07,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:07,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 330 [2023-11-06 22:02:07,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:07,805 INFO L124 PetriNetUnfolderBase]: 1121/1498 cut-off events. [2023-11-06 22:02:07,805 INFO L125 PetriNetUnfolderBase]: For 122/176 co-relation queries the response was YES. [2023-11-06 22:02:07,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3498 conditions, 1498 events. 1121/1498 cut-off events. For 122/176 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 5989 event pairs, 580 based on Foata normal form. 55/624 useless extension candidates. Maximal degree in co-relation 3471. Up to 1464 conditions per place. [2023-11-06 22:02:07,826 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 29 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2023-11-06 22:02:07,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 199 flow [2023-11-06 22:02:07,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:02:07,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-11-06 22:02:07,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49292929292929294 [2023-11-06 22:02:07,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-11-06 22:02:07,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-11-06 22:02:07,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:07,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-11-06 22:02:07,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:07,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:07,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:07,840 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 139 flow. Second operand 3 states and 488 transitions. [2023-11-06 22:02:07,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 199 flow [2023-11-06 22:02:07,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 178 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-06 22:02:07,847 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 120 flow [2023-11-06 22:02:07,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2023-11-06 22:02:07,850 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2023-11-06 22:02:07,851 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 120 flow [2023-11-06 22:02:07,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:07,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:07,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:02:07,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:08,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:08,060 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:02:08,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:08,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1014576060, now seen corresponding path program 1 times [2023-11-06 22:02:08,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:08,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089459945] [2023-11-06 22:02:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:08,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:08,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:08,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089459945] [2023-11-06 22:02:08,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089459945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:08,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:08,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:02:08,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883395790] [2023-11-06 22:02:08,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:08,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:08,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:08,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:08,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:02:08,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 330 [2023-11-06 22:02:08,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:08,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:08,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 330 [2023-11-06 22:02:08,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:08,485 INFO L124 PetriNetUnfolderBase]: 1239/1615 cut-off events. [2023-11-06 22:02:08,485 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-11-06 22:02:08,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3596 conditions, 1615 events. 1239/1615 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 5801 event pairs, 293 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 3556. Up to 881 conditions per place. [2023-11-06 22:02:08,502 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 45 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-11-06 22:02:08,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 241 flow [2023-11-06 22:02:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:02:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 501 transitions. [2023-11-06 22:02:08,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060606060606061 [2023-11-06 22:02:08,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 501 transitions. [2023-11-06 22:02:08,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 501 transitions. [2023-11-06 22:02:08,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:08,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 501 transitions. [2023-11-06 22:02:08,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:08,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:08,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:08,514 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 120 flow. Second operand 3 states and 501 transitions. [2023-11-06 22:02:08,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 241 flow [2023-11-06 22:02:08,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 50 transitions, 229 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:02:08,518 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 110 flow [2023-11-06 22:02:08,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-11-06 22:02:08,522 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2023-11-06 22:02:08,522 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 110 flow [2023-11-06 22:02:08,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:08,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:08,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:02:08,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:02:08,524 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:02:08,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:08,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1014576043, now seen corresponding path program 1 times [2023-11-06 22:02:08,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:08,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116358314] [2023-11-06 22:02:08,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:08,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:08,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:08,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116358314] [2023-11-06 22:02:08,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116358314] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:08,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193672681] [2023-11-06 22:02:08,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:08,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:08,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:08,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:08,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:02:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:08,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:02:08,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:08,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:02:08,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193672681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:08,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:02:08,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-06 22:02:08,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764454829] [2023-11-06 22:02:08,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:08,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:08,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:08,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:08,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:02:08,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 330 [2023-11-06 22:02:08,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:08,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:08,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 330 [2023-11-06 22:02:08,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:09,072 INFO L124 PetriNetUnfolderBase]: 941/1256 cut-off events. [2023-11-06 22:02:09,073 INFO L125 PetriNetUnfolderBase]: For 443/551 co-relation queries the response was YES. [2023-11-06 22:02:09,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2882 conditions, 1256 events. 941/1256 cut-off events. For 443/551 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 4819 event pairs, 470 based on Foata normal form. 109/719 useless extension candidates. Maximal degree in co-relation 2851. Up to 1232 conditions per place. [2023-11-06 22:02:09,086 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 31 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-11-06 22:02:09,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 172 flow [2023-11-06 22:02:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:02:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-11-06 22:02:09,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808080808080808 [2023-11-06 22:02:09,090 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-11-06 22:02:09,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-11-06 22:02:09,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:09,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-11-06 22:02:09,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:09,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:09,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:09,098 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 110 flow. Second operand 3 states and 476 transitions. [2023-11-06 22:02:09,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 172 flow [2023-11-06 22:02:09,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:02:09,100 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 104 flow [2023-11-06 22:02:09,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-11-06 22:02:09,102 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2023-11-06 22:02:09,102 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 104 flow [2023-11-06 22:02:09,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:09,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:09,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:09,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:09,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:09,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:02:09,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1099610421, now seen corresponding path program 1 times [2023-11-06 22:02:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:09,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631580505] [2023-11-06 22:02:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:09,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:09,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:09,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631580505] [2023-11-06 22:02:09,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631580505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:09,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904819844] [2023-11-06 22:02:09,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:09,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:09,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:09,381 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:09,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:02:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:09,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:02:09,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:09,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:09,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904819844] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:09,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:09,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:02:09,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598143676] [2023-11-06 22:02:09,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:09,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:02:09,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:09,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:02:09,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:02:09,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 330 [2023-11-06 22:02:09,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 155.71428571428572) internal successors, (1090), 7 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:09,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:09,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 330 [2023-11-06 22:02:09,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:10,032 INFO L124 PetriNetUnfolderBase]: 2013/2575 cut-off events. [2023-11-06 22:02:10,032 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-11-06 22:02:10,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5892 conditions, 2575 events. 2013/2575 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10298 event pairs, 479 based on Foata normal form. 0/1145 useless extension candidates. Maximal degree in co-relation 5880. Up to 1464 conditions per place. [2023-11-06 22:02:10,061 INFO L140 encePairwiseOnDemand]: 326/330 looper letters, 83 selfloop transitions, 9 changer transitions 0/94 dead transitions. [2023-11-06 22:02:10,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 94 transitions, 428 flow [2023-11-06 22:02:10,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:02:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:02:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1012 transitions. [2023-11-06 22:02:10,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2023-11-06 22:02:10,066 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1012 transitions. [2023-11-06 22:02:10,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1012 transitions. [2023-11-06 22:02:10,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:10,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1012 transitions. [2023-11-06 22:02:10,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:10,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 330.0) internal successors, (2310), 7 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:10,077 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 330.0) internal successors, (2310), 7 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:10,077 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 104 flow. Second operand 6 states and 1012 transitions. [2023-11-06 22:02:10,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 94 transitions, 428 flow [2023-11-06 22:02:10,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 94 transitions, 424 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:02:10,082 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 161 flow [2023-11-06 22:02:10,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-11-06 22:02:10,085 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-11-06 22:02:10,085 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 161 flow [2023-11-06 22:02:10,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 155.71428571428572) internal successors, (1090), 7 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:10,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:10,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:10,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:10,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:02:10,293 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:02:10,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:10,294 INFO L85 PathProgramCache]: Analyzing trace with hash 276525736, now seen corresponding path program 1 times [2023-11-06 22:02:10,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:10,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644925634] [2023-11-06 22:02:10,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:10,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:10,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:10,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644925634] [2023-11-06 22:02:10,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644925634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:10,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:10,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:02:10,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302755133] [2023-11-06 22:02:10,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:10,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:10,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:10,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:10,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:02:10,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 330 [2023-11-06 22:02:10,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:10,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:10,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 330 [2023-11-06 22:02:10,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:10,765 INFO L124 PetriNetUnfolderBase]: 1942/2537 cut-off events. [2023-11-06 22:02:10,765 INFO L125 PetriNetUnfolderBase]: For 2656/2796 co-relation queries the response was YES. [2023-11-06 22:02:10,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7249 conditions, 2537 events. 1942/2537 cut-off events. For 2656/2796 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10022 event pairs, 852 based on Foata normal form. 140/1599 useless extension candidates. Maximal degree in co-relation 7215. Up to 2114 conditions per place. [2023-11-06 22:02:10,791 INFO L140 encePairwiseOnDemand]: 325/330 looper letters, 59 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-11-06 22:02:10,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 64 transitions, 387 flow [2023-11-06 22:02:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:02:10,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-11-06 22:02:10,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080808080808081 [2023-11-06 22:02:10,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-11-06 22:02:10,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-11-06 22:02:10,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:10,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-11-06 22:02:10,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:10,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:10,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:10,801 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 161 flow. Second operand 3 states and 503 transitions. [2023-11-06 22:02:10,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 64 transitions, 387 flow [2023-11-06 22:02:10,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 346 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-11-06 22:02:10,808 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 161 flow [2023-11-06 22:02:10,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-11-06 22:02:10,810 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2023-11-06 22:02:10,811 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 161 flow [2023-11-06 22:02:10,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:10,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:10,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:10,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:02:10,812 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:02:10,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:10,812 INFO L85 PathProgramCache]: Analyzing trace with hash -17635226, now seen corresponding path program 1 times [2023-11-06 22:02:10,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:10,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197403493] [2023-11-06 22:02:10,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:10,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:10,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197403493] [2023-11-06 22:02:10,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197403493] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112373966] [2023-11-06 22:02:10,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:10,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:10,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:10,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:10,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:02:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:11,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:02:11,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:11,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:11,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112373966] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:11,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:11,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-11-06 22:02:11,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046989592] [2023-11-06 22:02:11,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:11,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:02:11,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:11,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:02:11,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:02:11,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 330 [2023-11-06 22:02:11,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 161 flow. Second operand has 12 states, 12 states have (on average 142.16666666666666) internal successors, (1706), 12 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:11,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:11,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 330 [2023-11-06 22:02:11,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:12,532 INFO L124 PetriNetUnfolderBase]: 3530/4631 cut-off events. [2023-11-06 22:02:12,532 INFO L125 PetriNetUnfolderBase]: For 3291/3549 co-relation queries the response was YES. [2023-11-06 22:02:12,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13463 conditions, 4631 events. 3530/4631 cut-off events. For 3291/3549 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 20174 event pairs, 887 based on Foata normal form. 258/3174 useless extension candidates. Maximal degree in co-relation 10078. Up to 1703 conditions per place. [2023-11-06 22:02:12,575 INFO L140 encePairwiseOnDemand]: 322/330 looper letters, 142 selfloop transitions, 12 changer transitions 0/156 dead transitions. [2023-11-06 22:02:12,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 156 transitions, 899 flow [2023-11-06 22:02:12,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:02:12,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:02:12,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1364 transitions. [2023-11-06 22:02:12,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2023-11-06 22:02:12,583 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1364 transitions. [2023-11-06 22:02:12,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1364 transitions. [2023-11-06 22:02:12,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:12,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1364 transitions. [2023-11-06 22:02:12,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.55555555555554) internal successors, (1364), 9 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:12,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 330.0) internal successors, (3300), 10 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:12,600 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 330.0) internal successors, (3300), 10 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:12,601 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 161 flow. Second operand 9 states and 1364 transitions. [2023-11-06 22:02:12,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 156 transitions, 899 flow [2023-11-06 22:02:12,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 156 transitions, 892 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:02:12,618 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 218 flow [2023-11-06 22:02:12,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2023-11-06 22:02:12,620 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2023-11-06 22:02:12,620 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 218 flow [2023-11-06 22:02:12,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 142.16666666666666) internal successors, (1706), 12 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:12,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:12,622 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:12,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:12,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:12,829 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:02:12,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:12,830 INFO L85 PathProgramCache]: Analyzing trace with hash -777155792, now seen corresponding path program 2 times [2023-11-06 22:02:12,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:12,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862595472] [2023-11-06 22:02:12,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:12,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:02:13,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862595472] [2023-11-06 22:02:13,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862595472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:13,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461432853] [2023-11-06 22:02:13,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:02:13,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:13,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:13,017 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:13,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:02:13,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:02:13,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:13,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:02:13,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:02:13,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:02:13,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461432853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:13,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:02:13,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-06 22:02:13,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210856808] [2023-11-06 22:02:13,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:13,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:13,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:13,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:13,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:02:13,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 330 [2023-11-06 22:02:13,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:13,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:13,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 330 [2023-11-06 22:02:13,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:13,615 INFO L124 PetriNetUnfolderBase]: 2056/2731 cut-off events. [2023-11-06 22:02:13,616 INFO L125 PetriNetUnfolderBase]: For 3567/4027 co-relation queries the response was YES. [2023-11-06 22:02:13,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8465 conditions, 2731 events. 2056/2731 cut-off events. For 3567/4027 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 11248 event pairs, 1048 based on Foata normal form. 554/2474 useless extension candidates. Maximal degree in co-relation 6885. Up to 2698 conditions per place. [2023-11-06 22:02:13,643 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 42 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-11-06 22:02:13,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 292 flow [2023-11-06 22:02:13,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:13,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:02:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-11-06 22:02:13,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49393939393939396 [2023-11-06 22:02:13,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-11-06 22:02:13,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-11-06 22:02:13,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:13,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-11-06 22:02:13,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:13,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:13,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:13,655 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 218 flow. Second operand 3 states and 489 transitions. [2023-11-06 22:02:13,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 292 flow [2023-11-06 22:02:13,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 266 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-06 22:02:13,669 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 182 flow [2023-11-06 22:02:13,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-11-06 22:02:13,670 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2023-11-06 22:02:13,670 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 182 flow [2023-11-06 22:02:13,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:13,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:13,672 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:13,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:13,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:13,880 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:02:13,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:13,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1896511949, now seen corresponding path program 1 times [2023-11-06 22:02:13,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:13,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056535196] [2023-11-06 22:02:13,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:13,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:02:13,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:13,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056535196] [2023-11-06 22:02:13,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056535196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:13,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:13,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:02:13,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248331554] [2023-11-06 22:02:13,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:13,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:13,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:13,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:13,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:02:13,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 330 [2023-11-06 22:02:13,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:13,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:13,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 330 [2023-11-06 22:02:13,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:14,378 INFO L124 PetriNetUnfolderBase]: 2236/2973 cut-off events. [2023-11-06 22:02:14,378 INFO L125 PetriNetUnfolderBase]: For 1069/1166 co-relation queries the response was YES. [2023-11-06 22:02:14,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8022 conditions, 2973 events. 2236/2973 cut-off events. For 1069/1166 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 12648 event pairs, 534 based on Foata normal form. 233/2333 useless extension candidates. Maximal degree in co-relation 8009. Up to 1538 conditions per place. [2023-11-06 22:02:14,403 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 55 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2023-11-06 22:02:14,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 341 flow [2023-11-06 22:02:14,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:14,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:02:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-11-06 22:02:14,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-06 22:02:14,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-11-06 22:02:14,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-11-06 22:02:14,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:14,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-11-06 22:02:14,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:14,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:14,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:14,414 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 182 flow. Second operand 3 states and 495 transitions. [2023-11-06 22:02:14,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 341 flow [2023-11-06 22:02:14,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 329 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-06 22:02:14,425 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 168 flow [2023-11-06 22:02:14,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-11-06 22:02:14,426 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-11-06 22:02:14,427 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 168 flow [2023-11-06 22:02:14,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:14,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:14,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:14,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:02:14,428 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:02:14,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:14,429 INFO L85 PathProgramCache]: Analyzing trace with hash -542009748, now seen corresponding path program 1 times [2023-11-06 22:02:14,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:14,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049092075] [2023-11-06 22:02:14,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:14,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:14,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:14,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049092075] [2023-11-06 22:02:14,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049092075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:14,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:14,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:02:14,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321325122] [2023-11-06 22:02:14,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:14,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:02:14,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:14,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:02:14,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:02:14,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 330 [2023-11-06 22:02:14,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:14,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:14,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 330 [2023-11-06 22:02:14,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:14,843 INFO L124 PetriNetUnfolderBase]: 1327/1816 cut-off events. [2023-11-06 22:02:14,843 INFO L125 PetriNetUnfolderBase]: For 1529/1789 co-relation queries the response was YES. [2023-11-06 22:02:14,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5145 conditions, 1816 events. 1327/1816 cut-off events. For 1529/1789 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7250 event pairs, 524 based on Foata normal form. 260/1826 useless extension candidates. Maximal degree in co-relation 5133. Up to 1224 conditions per place. [2023-11-06 22:02:14,854 INFO L140 encePairwiseOnDemand]: 326/330 looper letters, 46 selfloop transitions, 5 changer transitions 14/67 dead transitions. [2023-11-06 22:02:14,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 67 transitions, 386 flow [2023-11-06 22:02:14,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:02:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:02:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 640 transitions. [2023-11-06 22:02:14,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2023-11-06 22:02:14,858 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 640 transitions. [2023-11-06 22:02:14,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 640 transitions. [2023-11-06 22:02:14,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:14,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 640 transitions. [2023-11-06 22:02:14,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:14,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:14,867 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:14,867 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 168 flow. Second operand 4 states and 640 transitions. [2023-11-06 22:02:14,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 67 transitions, 386 flow [2023-11-06 22:02:14,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 67 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:02:14,874 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 128 flow [2023-11-06 22:02:14,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2023-11-06 22:02:14,875 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-11-06 22:02:14,876 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 128 flow [2023-11-06 22:02:14,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:14,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:14,877 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:14,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:02:14,877 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:02:14,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:14,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1896511966, now seen corresponding path program 2 times [2023-11-06 22:02:14,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:14,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129970416] [2023-11-06 22:02:14,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:14,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:02:14,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:14,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129970416] [2023-11-06 22:02:14,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129970416] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:14,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421188072] [2023-11-06 22:02:14,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:02:14,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:14,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:14,968 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:14,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:02:15,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:02:15,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:15,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:02:15,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:02:15,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:02:15,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421188072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:15,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:02:15,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-06 22:02:15,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681620876] [2023-11-06 22:02:15,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:15,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:02:15,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:15,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:02:15,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:02:15,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 330 [2023-11-06 22:02:15,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:15,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:15,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 330 [2023-11-06 22:02:15,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:15,367 INFO L124 PetriNetUnfolderBase]: 494/678 cut-off events. [2023-11-06 22:02:15,368 INFO L125 PetriNetUnfolderBase]: For 383/451 co-relation queries the response was YES. [2023-11-06 22:02:15,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1845 conditions, 678 events. 494/678 cut-off events. For 383/451 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2174 event pairs, 239 based on Foata normal form. 68/685 useless extension candidates. Maximal degree in co-relation 1833. Up to 658 conditions per place. [2023-11-06 22:02:15,370 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-11-06 22:02:15,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 186 flow [2023-11-06 22:02:15,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:02:15,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:02:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 629 transitions. [2023-11-06 22:02:15,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765151515151515 [2023-11-06 22:02:15,374 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 629 transitions. [2023-11-06 22:02:15,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 629 transitions. [2023-11-06 22:02:15,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:15,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 629 transitions. [2023-11-06 22:02:15,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:15,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:15,382 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:15,382 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 128 flow. Second operand 4 states and 629 transitions. [2023-11-06 22:02:15,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 186 flow [2023-11-06 22:02:15,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 172 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:02:15,386 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-11-06 22:02:15,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-11-06 22:02:15,386 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2023-11-06 22:02:15,387 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-11-06 22:02:15,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:15,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-11-06 22:02:15,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-06 22:02:15,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-06 22:02:15,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-06 22:02:15,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-06 22:02:15,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-06 22:02:15,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-06 22:02:15,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-06 22:02:15,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2023-11-06 22:02:15,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2023-11-06 22:02:15,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2023-11-06 22:02:15,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-06 22:02:15,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-06 22:02:15,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-06 22:02:15,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-06 22:02:15,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-06 22:02:15,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-06 22:02:15,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:15,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:15,601 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:15,610 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:02:15,610 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:02:15,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:02:15 BasicIcfg [2023-11-06 22:02:15,615 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:02:15,616 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:02:15,616 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:02:15,616 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:02:15,617 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:54" (3/4) ... [2023-11-06 22:02:15,619 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:02:15,623 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:02:15,623 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:02:15,624 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:02:15,637 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-06 22:02:15,637 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:02:15,638 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:02:15,638 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:02:15,719 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:02:15,719 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:02:15,720 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:02:15,721 INFO L158 Benchmark]: Toolchain (without parser) took 22242.81ms. Allocated memory was 188.7MB in the beginning and 281.0MB in the end (delta: 92.3MB). Free memory was 143.9MB in the beginning and 88.1MB in the end (delta: 55.7MB). Peak memory consumption was 150.7MB. Max. memory is 16.1GB. [2023-11-06 22:02:15,721 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 113.2MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:02:15,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.31ms. Allocated memory is still 188.7MB. Free memory was 143.3MB in the beginning and 131.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:02:15,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.38ms. Allocated memory is still 188.7MB. Free memory was 131.8MB in the beginning and 130.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:02:15,723 INFO L158 Benchmark]: Boogie Preprocessor took 39.87ms. Allocated memory is still 188.7MB. Free memory was 130.2MB in the beginning and 128.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:02:15,723 INFO L158 Benchmark]: RCFGBuilder took 696.28ms. Allocated memory is still 188.7MB. Free memory was 128.1MB in the beginning and 105.6MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-06 22:02:15,724 INFO L158 Benchmark]: TraceAbstraction took 20984.28ms. Allocated memory was 188.7MB in the beginning and 281.0MB in the end (delta: 92.3MB). Free memory was 104.6MB in the beginning and 91.3MB in the end (delta: 13.3MB). Peak memory consumption was 108.7MB. Max. memory is 16.1GB. [2023-11-06 22:02:15,724 INFO L158 Benchmark]: Witness Printer took 104.10ms. Allocated memory is still 281.0MB. Free memory was 91.3MB in the beginning and 88.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:02:15,727 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 113.2MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.31ms. Allocated memory is still 188.7MB. Free memory was 143.3MB in the beginning and 131.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.38ms. Allocated memory is still 188.7MB. Free memory was 131.8MB in the beginning and 130.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.87ms. Allocated memory is still 188.7MB. Free memory was 130.2MB in the beginning and 128.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 696.28ms. Allocated memory is still 188.7MB. Free memory was 128.1MB in the beginning and 105.6MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 20984.28ms. Allocated memory was 188.7MB in the beginning and 281.0MB in the end (delta: 92.3MB). Free memory was 104.6MB in the beginning and 91.3MB in the end (delta: 13.3MB). Peak memory consumption was 108.7MB. Max. memory is 16.1GB. * Witness Printer took 104.10ms. Allocated memory is still 281.0MB. Free memory was 91.3MB in the beginning and 88.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.9s, 147 PlacesBefore, 36 PlacesAfterwards, 148 TransitionsBefore, 30 TransitionsAfterwards, 2430 CoEnabledTransitionPairs, 7 FixpointIterations, 81 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 6 ConcurrentYvCompositions, 7 ChoiceCompositions, 155 TotalNumberOfCompositions, 2562 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2344, independent: 2322, independent conditional: 0, independent unconditional: 2322, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1267, independent: 1259, independent conditional: 0, independent unconditional: 1259, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2344, independent: 1063, independent conditional: 0, independent unconditional: 1063, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 1267, unknown conditional: 0, unknown unconditional: 1267] , Statistics on independence cache: Total cache size (in pairs): 68, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 209 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.8s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 833 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 630 mSDsluCounter, 248 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 207 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1583 IncrementalHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 41 mSDtfsCounter, 1583 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=10, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 149 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 382 SizeOfPredicates, 9 NumberOfNonLiveVariables, 783 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 24 InterpolantComputations, 11 PerfectInterpolantSequences, 53/81 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:02:15,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2030a655-8e87-4467-97ab-1d8540c5a142/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE