./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:06:14,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:06:14,560 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 17:06:14,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:06:14,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:06:14,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:06:14,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:06:14,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:06:14,610 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:06:14,611 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:06:14,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:06:14,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:06:14,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:06:14,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:06:14,615 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:06:14,616 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:06:14,616 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:06:14,617 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:06:14,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:06:14,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:06:14,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:06:14,624 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:06:14,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:06:14,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:06:14,626 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:06:14,626 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 17:06:14,626 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:06:14,627 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:06:14,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:06:14,632 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:06:14,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:06:14,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:06:14,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:06:14,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:06:14,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:06:14,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:06:14,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:06:14,635 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:06:14,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:06:14,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:06:14,638 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:06:14,639 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:06:14,640 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:06:14,640 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:06:14,640 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_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a [2024-11-08 17:06:15,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:06:15,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:06:15,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:06:15,156 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:06:15,157 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:06:15,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c Unable to find full path for "g++" [2024-11-08 17:06:17,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:06:18,237 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:06:18,238 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2024-11-08 17:06:18,253 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/data/55e5ae2d4/a5dc0c3d44be4e7b99d0a1b90841b41f/FLAG9f3c187c0 [2024-11-08 17:06:18,280 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/data/55e5ae2d4/a5dc0c3d44be4e7b99d0a1b90841b41f [2024-11-08 17:06:18,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:06:18,287 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:06:18,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:06:18,290 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:06:18,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:06:18,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:06:18" (1/1) ... [2024-11-08 17:06:18,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@107463e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18, skipping insertion in model container [2024-11-08 17:06:18,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:06:18" (1/1) ... [2024-11-08 17:06:18,360 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:06:18,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:06:18,716 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:06:18,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:06:18,786 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:06:18,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18 WrapperNode [2024-11-08 17:06:18,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:06:18,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:06:18,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:06:18,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:06:18,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18" (1/1) ... [2024-11-08 17:06:18,814 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18" (1/1) ... [2024-11-08 17:06:18,856 INFO L138 Inliner]: procedures = 24, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2024-11-08 17:06:18,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:06:18,863 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:06:18,865 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:06:18,866 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:06:18,882 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18" (1/1) ... [2024-11-08 17:06:18,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18" (1/1) ... [2024-11-08 17:06:18,886 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18" (1/1) ... [2024-11-08 17:06:18,910 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 17:06:18,911 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18" (1/1) ... [2024-11-08 17:06:18,911 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18" (1/1) ... [2024-11-08 17:06:18,921 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18" (1/1) ... [2024-11-08 17:06:18,927 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18" (1/1) ... [2024-11-08 17:06:18,930 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18" (1/1) ... [2024-11-08 17:06:18,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18" (1/1) ... [2024-11-08 17:06:18,936 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:06:18,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:06:18,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:06:18,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:06:18,940 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18" (1/1) ... [2024-11-08 17:06:18,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:06:18,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:19,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:06:19,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:06:19,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:06:19,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:06:19,065 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:06:19,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:06:19,065 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:06:19,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:06:19,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:06:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:06:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:06:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:06:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:06:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:06:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:06:19,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:06:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:06:19,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:06:19,073 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:06:19,233 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:06:19,237 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:06:19,702 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:06:19,703 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:06:20,071 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:06:20,072 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:06:20,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:06:20 BoogieIcfgContainer [2024-11-08 17:06:20,073 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:06:20,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:06:20,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:06:20,082 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:06:20,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:06:18" (1/3) ... [2024-11-08 17:06:20,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab22fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:06:20, skipping insertion in model container [2024-11-08 17:06:20,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:18" (2/3) ... [2024-11-08 17:06:20,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab22fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:06:20, skipping insertion in model container [2024-11-08 17:06:20,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:06:20" (3/3) ... [2024-11-08 17:06:20,088 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2024-11-08 17:06:20,117 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:06:20,117 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-08 17:06:20,118 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:06:20,214 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 17:06:20,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 53 transitions, 127 flow [2024-11-08 17:06:20,339 INFO L124 PetriNetUnfolderBase]: 8/50 cut-off events. [2024-11-08 17:06:20,340 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:06:20,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 8/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 116 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-08 17:06:20,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 53 transitions, 127 flow [2024-11-08 17:06:20,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 48 transitions, 111 flow [2024-11-08 17:06:20,387 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:06:20,402 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@765b6140, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:06:20,403 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-08 17:06:20,414 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:06:20,416 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-08 17:06:20,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:06:20,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:20,418 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:06:20,419 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:20,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:20,426 INFO L85 PathProgramCache]: Analyzing trace with hash 12822793, now seen corresponding path program 1 times [2024-11-08 17:06:20,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:20,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187660031] [2024-11-08 17:06:20,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:20,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:21,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:21,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187660031] [2024-11-08 17:06:21,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187660031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:21,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:06:21,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:06:21,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711415264] [2024-11-08 17:06:21,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:21,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:06:21,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:21,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:06:21,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:06:21,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-08 17:06:21,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:21,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:21,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-08 17:06:21,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:21,685 INFO L124 PetriNetUnfolderBase]: 455/766 cut-off events. [2024-11-08 17:06:21,685 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-08 17:06:21,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 766 events. 455/766 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3611 event pairs, 306 based on Foata normal form. 1/657 useless extension candidates. Maximal degree in co-relation 1292. Up to 625 conditions per place. [2024-11-08 17:06:21,714 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 25 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2024-11-08 17:06:21,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 175 flow [2024-11-08 17:06:21,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:06:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:06:21,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-08 17:06:21,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6179245283018868 [2024-11-08 17:06:21,736 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 111 flow. Second operand 4 states and 131 transitions. [2024-11-08 17:06:21,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 175 flow [2024-11-08 17:06:21,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 166 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 17:06:21,752 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 131 flow [2024-11-08 17:06:21,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2024-11-08 17:06:21,765 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2024-11-08 17:06:21,765 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 131 flow [2024-11-08 17:06:21,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:21,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:21,766 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:21,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:06:21,767 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:21,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:21,770 INFO L85 PathProgramCache]: Analyzing trace with hash -227127071, now seen corresponding path program 1 times [2024-11-08 17:06:21,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:21,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226505103] [2024-11-08 17:06:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:21,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:21,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:21,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226505103] [2024-11-08 17:06:21,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226505103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:21,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:06:21,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:06:21,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844736725] [2024-11-08 17:06:21,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:21,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:06:21,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:21,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:06:21,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:06:21,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-08 17:06:21,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:21,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:21,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-08 17:06:21,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:22,463 INFO L124 PetriNetUnfolderBase]: 956/1682 cut-off events. [2024-11-08 17:06:22,464 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-08 17:06:22,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 1682 events. 956/1682 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9447 event pairs, 466 based on Foata normal form. 42/1528 useless extension candidates. Maximal degree in co-relation 2967. Up to 947 conditions per place. [2024-11-08 17:06:22,486 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 54 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2024-11-08 17:06:22,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 80 transitions, 311 flow [2024-11-08 17:06:22,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:06:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:06:22,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-11-08 17:06:22,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7405660377358491 [2024-11-08 17:06:22,490 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 131 flow. Second operand 4 states and 157 transitions. [2024-11-08 17:06:22,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 80 transitions, 311 flow [2024-11-08 17:06:22,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 80 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:06:22,501 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 157 flow [2024-11-08 17:06:22,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2024-11-08 17:06:22,503 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2024-11-08 17:06:22,503 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 157 flow [2024-11-08 17:06:22,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:22,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:22,505 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 17:06:22,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:06:22,507 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:22,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:22,511 INFO L85 PathProgramCache]: Analyzing trace with hash 905946472, now seen corresponding path program 1 times [2024-11-08 17:06:22,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:22,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138640849] [2024-11-08 17:06:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:22,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:22,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:22,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138640849] [2024-11-08 17:06:22,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138640849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:22,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432496995] [2024-11-08 17:06:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:22,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:22,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:22,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:22,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:06:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:22,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:06:22,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:23,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:23,010 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:06:23,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432496995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:23,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:06:23,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 17:06:23,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127840661] [2024-11-08 17:06:23,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:23,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:06:23,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:23,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:06:23,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:06:23,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-08 17:06:23,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:23,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:23,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-08 17:06:23,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:23,468 INFO L124 PetriNetUnfolderBase]: 705/1155 cut-off events. [2024-11-08 17:06:23,468 INFO L125 PetriNetUnfolderBase]: For 468/544 co-relation queries the response was YES. [2024-11-08 17:06:23,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2597 conditions, 1155 events. 705/1155 cut-off events. For 468/544 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5767 event pairs, 466 based on Foata normal form. 1/993 useless extension candidates. Maximal degree in co-relation 2566. Up to 942 conditions per place. [2024-11-08 17:06:23,492 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 24 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-11-08 17:06:23,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 215 flow [2024-11-08 17:06:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:06:23,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:06:23,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-11-08 17:06:23,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5628930817610063 [2024-11-08 17:06:23,497 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 157 flow. Second operand 6 states and 179 transitions. [2024-11-08 17:06:23,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 215 flow [2024-11-08 17:06:23,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:06:23,503 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 164 flow [2024-11-08 17:06:23,503 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-11-08 17:06:23,505 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2024-11-08 17:06:23,505 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 164 flow [2024-11-08 17:06:23,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:23,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:23,507 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 17:06:23,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:06:23,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:23,712 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:23,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:23,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1980430045, now seen corresponding path program 1 times [2024-11-08 17:06:23,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:23,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818322712] [2024-11-08 17:06:23,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:23,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:23,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:23,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:23,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818322712] [2024-11-08 17:06:23,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818322712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:23,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403544796] [2024-11-08 17:06:23,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:23,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:23,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:23,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:23,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:06:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:24,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:06:24,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:24,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:06:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:24,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403544796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:06:24,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:06:24,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 17:06:24,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527151691] [2024-11-08 17:06:24,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:06:24,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:06:24,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:24,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:06:24,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:06:24,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-08 17:06:24,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 164 flow. Second operand has 12 states, 12 states have (on average 26.083333333333332) internal successors, (313), 12 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:24,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:24,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-08 17:06:24,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:24,898 INFO L124 PetriNetUnfolderBase]: 711/1176 cut-off events. [2024-11-08 17:06:24,899 INFO L125 PetriNetUnfolderBase]: For 429/505 co-relation queries the response was YES. [2024-11-08 17:06:24,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2568 conditions, 1176 events. 711/1176 cut-off events. For 429/505 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5929 event pairs, 466 based on Foata normal form. 3/1014 useless extension candidates. Maximal degree in co-relation 2484. Up to 949 conditions per place. [2024-11-08 17:06:24,917 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 27 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-11-08 17:06:24,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 298 flow [2024-11-08 17:06:24,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:06:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 17:06:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 290 transitions. [2024-11-08 17:06:24,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5471698113207547 [2024-11-08 17:06:24,924 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 164 flow. Second operand 10 states and 290 transitions. [2024-11-08 17:06:24,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 298 flow [2024-11-08 17:06:24,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 268 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-08 17:06:24,930 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 232 flow [2024-11-08 17:06:24,930 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=232, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-11-08 17:06:24,931 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 15 predicate places. [2024-11-08 17:06:24,931 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 232 flow [2024-11-08 17:06:24,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.083333333333332) internal successors, (313), 12 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:24,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:24,932 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:24,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 17:06:25,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:25,138 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:25,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:25,139 INFO L85 PathProgramCache]: Analyzing trace with hash 318165429, now seen corresponding path program 1 times [2024-11-08 17:06:25,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:25,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331566804] [2024-11-08 17:06:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:25,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:25,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:25,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:25,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331566804] [2024-11-08 17:06:25,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331566804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:25,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:06:25,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:06:25,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287160699] [2024-11-08 17:06:25,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:25,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:06:25,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:25,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:06:25,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:06:25,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-08 17:06:25,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:25,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:25,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-08 17:06:25,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:25,727 INFO L124 PetriNetUnfolderBase]: 1479/2361 cut-off events. [2024-11-08 17:06:25,731 INFO L125 PetriNetUnfolderBase]: For 824/980 co-relation queries the response was YES. [2024-11-08 17:06:25,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5095 conditions, 2361 events. 1479/2361 cut-off events. For 824/980 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12782 event pairs, 592 based on Foata normal form. 64/2145 useless extension candidates. Maximal degree in co-relation 5054. Up to 1472 conditions per place. [2024-11-08 17:06:25,766 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 70 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2024-11-08 17:06:25,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 95 transitions, 484 flow [2024-11-08 17:06:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:06:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:06:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-11-08 17:06:25,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7311320754716981 [2024-11-08 17:06:25,768 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 232 flow. Second operand 4 states and 155 transitions. [2024-11-08 17:06:25,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 95 transitions, 484 flow [2024-11-08 17:06:25,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 95 transitions, 473 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-08 17:06:25,774 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 250 flow [2024-11-08 17:06:25,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-11-08 17:06:25,776 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 18 predicate places. [2024-11-08 17:06:25,776 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 250 flow [2024-11-08 17:06:25,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:25,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:25,777 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:25,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:06:25,777 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:25,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:25,778 INFO L85 PathProgramCache]: Analyzing trace with hash 373947994, now seen corresponding path program 1 times [2024-11-08 17:06:25,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:25,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57147542] [2024-11-08 17:06:25,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:25,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:25,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:25,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:25,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57147542] [2024-11-08 17:06:25,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57147542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:25,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:06:25,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:06:25,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987986131] [2024-11-08 17:06:25,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:25,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:06:25,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:25,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:06:25,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:06:25,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-08 17:06:25,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:25,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:25,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-08 17:06:25,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:26,381 INFO L124 PetriNetUnfolderBase]: 1378/2185 cut-off events. [2024-11-08 17:06:26,381 INFO L125 PetriNetUnfolderBase]: For 1580/1844 co-relation queries the response was YES. [2024-11-08 17:06:26,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5456 conditions, 2185 events. 1378/2185 cut-off events. For 1580/1844 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11707 event pairs, 388 based on Foata normal form. 79/2043 useless extension candidates. Maximal degree in co-relation 5413. Up to 787 conditions per place. [2024-11-08 17:06:26,413 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 68 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2024-11-08 17:06:26,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 98 transitions, 544 flow [2024-11-08 17:06:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:06:26,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:06:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-11-08 17:06:26,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6528301886792452 [2024-11-08 17:06:26,415 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 250 flow. Second operand 5 states and 173 transitions. [2024-11-08 17:06:26,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 98 transitions, 544 flow [2024-11-08 17:06:26,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 98 transitions, 535 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:06:26,424 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 263 flow [2024-11-08 17:06:26,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-11-08 17:06:26,426 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2024-11-08 17:06:26,426 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 263 flow [2024-11-08 17:06:26,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:26,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:26,428 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:26,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:06:26,429 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:26,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:26,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1006510812, now seen corresponding path program 1 times [2024-11-08 17:06:26,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:26,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028681293] [2024-11-08 17:06:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:26,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:06:26,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:26,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028681293] [2024-11-08 17:06:26,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028681293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:26,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:06:26,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:06:26,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287579233] [2024-11-08 17:06:26,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:26,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:06:26,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:26,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:06:26,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:06:26,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 17:06:26,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:26,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:26,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 17:06:26,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:27,199 INFO L124 PetriNetUnfolderBase]: 1994/3343 cut-off events. [2024-11-08 17:06:27,199 INFO L125 PetriNetUnfolderBase]: For 2376/2549 co-relation queries the response was YES. [2024-11-08 17:06:27,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8567 conditions, 3343 events. 1994/3343 cut-off events. For 2376/2549 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 19653 event pairs, 1130 based on Foata normal form. 62/3284 useless extension candidates. Maximal degree in co-relation 8521. Up to 1973 conditions per place. [2024-11-08 17:06:27,247 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 77 selfloop transitions, 7 changer transitions 0/103 dead transitions. [2024-11-08 17:06:27,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 103 transitions, 570 flow [2024-11-08 17:06:27,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:06:27,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:06:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 208 transitions. [2024-11-08 17:06:27,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6540880503144654 [2024-11-08 17:06:27,249 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 263 flow. Second operand 6 states and 208 transitions. [2024-11-08 17:06:27,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 103 transitions, 570 flow [2024-11-08 17:06:27,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 103 transitions, 536 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:06:27,259 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 290 flow [2024-11-08 17:06:27,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=290, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2024-11-08 17:06:27,260 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 24 predicate places. [2024-11-08 17:06:27,261 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 290 flow [2024-11-08 17:06:27,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:27,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:27,261 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:27,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:06:27,262 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:27,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:27,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1292513617, now seen corresponding path program 1 times [2024-11-08 17:06:27,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:27,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23413232] [2024-11-08 17:06:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:27,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:27,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:27,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:27,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23413232] [2024-11-08 17:06:27,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23413232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:27,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:06:27,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:06:27,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294670507] [2024-11-08 17:06:27,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:27,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:06:27,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:27,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:06:27,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:06:27,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-08 17:06:27,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:27,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:27,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-08 17:06:27,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:28,212 INFO L124 PetriNetUnfolderBase]: 2619/3832 cut-off events. [2024-11-08 17:06:28,212 INFO L125 PetriNetUnfolderBase]: For 4169/4729 co-relation queries the response was YES. [2024-11-08 17:06:28,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10468 conditions, 3832 events. 2619/3832 cut-off events. For 4169/4729 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 20068 event pairs, 1580 based on Foata normal form. 0/3468 useless extension candidates. Maximal degree in co-relation 10418. Up to 2447 conditions per place. [2024-11-08 17:06:28,266 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 81 selfloop transitions, 9 changer transitions 9/115 dead transitions. [2024-11-08 17:06:28,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 115 transitions, 664 flow [2024-11-08 17:06:28,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:06:28,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:06:28,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-11-08 17:06:28,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822102425876011 [2024-11-08 17:06:28,268 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 290 flow. Second operand 7 states and 216 transitions. [2024-11-08 17:06:28,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 115 transitions, 664 flow [2024-11-08 17:06:28,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 115 transitions, 662 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:06:28,276 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 333 flow [2024-11-08 17:06:28,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-11-08 17:06:28,279 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 32 predicate places. [2024-11-08 17:06:28,281 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 333 flow [2024-11-08 17:06:28,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:28,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:28,282 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:28,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:06:28,282 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:28,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:28,283 INFO L85 PathProgramCache]: Analyzing trace with hash 871287856, now seen corresponding path program 1 times [2024-11-08 17:06:28,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:28,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269906493] [2024-11-08 17:06:28,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:28,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:06:28,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:28,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269906493] [2024-11-08 17:06:28,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269906493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:28,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:06:28,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:06:28,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54508556] [2024-11-08 17:06:28,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:28,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:06:28,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:06:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:06:28,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 17:06:28,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 333 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:28,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:28,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 17:06:28,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:29,224 INFO L124 PetriNetUnfolderBase]: 1723/2865 cut-off events. [2024-11-08 17:06:29,224 INFO L125 PetriNetUnfolderBase]: For 2838/3104 co-relation queries the response was YES. [2024-11-08 17:06:29,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7723 conditions, 2865 events. 1723/2865 cut-off events. For 2838/3104 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16010 event pairs, 1066 based on Foata normal form. 46/2820 useless extension candidates. Maximal degree in co-relation 7670. Up to 1987 conditions per place. [2024-11-08 17:06:29,269 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 42 selfloop transitions, 2 changer transitions 32/95 dead transitions. [2024-11-08 17:06:29,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 570 flow [2024-11-08 17:06:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:06:29,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:06:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-11-08 17:06:29,272 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6383647798742138 [2024-11-08 17:06:29,272 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 333 flow. Second operand 6 states and 203 transitions. [2024-11-08 17:06:29,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 570 flow [2024-11-08 17:06:29,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 561 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:06:29,285 INFO L231 Difference]: Finished difference. Result has 86 places, 63 transitions, 275 flow [2024-11-08 17:06:29,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=86, PETRI_TRANSITIONS=63} [2024-11-08 17:06:29,289 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2024-11-08 17:06:29,289 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 63 transitions, 275 flow [2024-11-08 17:06:29,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:29,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:29,290 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:29,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:06:29,291 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:29,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:29,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1759727675, now seen corresponding path program 1 times [2024-11-08 17:06:29,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:29,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372930239] [2024-11-08 17:06:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:29,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:06:29,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:29,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372930239] [2024-11-08 17:06:29,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372930239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:29,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989532902] [2024-11-08 17:06:29,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:29,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:29,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:29,428 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:29,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:06:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:29,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 17:06:29,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:29,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:29,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:06:30,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:30,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989532902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:06:30,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:06:30,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-08 17:06:30,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289472959] [2024-11-08 17:06:30,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:06:30,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 17:06:30,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:30,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 17:06:30,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-08 17:06:30,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:06:30,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 63 transitions, 275 flow. Second operand has 19 states, 19 states have (on average 19.0) internal successors, (361), 19 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:30,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:30,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:06:30,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:32,574 INFO L124 PetriNetUnfolderBase]: 3238/5021 cut-off events. [2024-11-08 17:06:32,574 INFO L125 PetriNetUnfolderBase]: For 4360/4890 co-relation queries the response was YES. [2024-11-08 17:06:32,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13722 conditions, 5021 events. 3238/5021 cut-off events. For 4360/4890 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 28708 event pairs, 440 based on Foata normal form. 124/5049 useless extension candidates. Maximal degree in co-relation 13684. Up to 753 conditions per place. [2024-11-08 17:06:32,641 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 201 selfloop transitions, 29 changer transitions 0/243 dead transitions. [2024-11-08 17:06:32,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 243 transitions, 1415 flow [2024-11-08 17:06:32,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 17:06:32,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-08 17:06:32,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 480 transitions. [2024-11-08 17:06:32,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.532741398446171 [2024-11-08 17:06:32,645 INFO L175 Difference]: Start difference. First operand has 86 places, 63 transitions, 275 flow. Second operand 17 states and 480 transitions. [2024-11-08 17:06:32,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 243 transitions, 1415 flow [2024-11-08 17:06:32,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 243 transitions, 1281 flow, removed 64 selfloop flow, removed 10 redundant places. [2024-11-08 17:06:32,750 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 361 flow [2024-11-08 17:06:32,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=361, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2024-11-08 17:06:32,751 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 35 predicate places. [2024-11-08 17:06:32,751 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 361 flow [2024-11-08 17:06:32,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 19.0) internal successors, (361), 19 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:32,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:32,752 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:32,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:06:32,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 17:06:32,954 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:32,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:32,955 INFO L85 PathProgramCache]: Analyzing trace with hash 582372656, now seen corresponding path program 1 times [2024-11-08 17:06:32,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:32,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553080467] [2024-11-08 17:06:32,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:32,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:33,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:33,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553080467] [2024-11-08 17:06:33,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553080467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:33,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939462694] [2024-11-08 17:06:33,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:33,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:33,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:33,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:33,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:06:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:33,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 17:06:33,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:33,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:06:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:33,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939462694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:06:33,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:06:33,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 19 [2024-11-08 17:06:33,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445802745] [2024-11-08 17:06:33,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:06:33,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 17:06:33,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:33,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 17:06:33,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:06:34,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:06:34,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 361 flow. Second operand has 21 states, 21 states have (on average 19.142857142857142) internal successors, (402), 21 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:34,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:34,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:06:34,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:36,080 INFO L124 PetriNetUnfolderBase]: 5225/7490 cut-off events. [2024-11-08 17:06:36,080 INFO L125 PetriNetUnfolderBase]: For 10283/11125 co-relation queries the response was YES. [2024-11-08 17:06:36,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21584 conditions, 7490 events. 5225/7490 cut-off events. For 10283/11125 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 42517 event pairs, 1644 based on Foata normal form. 0/6850 useless extension candidates. Maximal degree in co-relation 21537. Up to 2634 conditions per place. [2024-11-08 17:06:36,183 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 146 selfloop transitions, 21 changer transitions 7/192 dead transitions. [2024-11-08 17:06:36,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 192 transitions, 1259 flow [2024-11-08 17:06:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:06:36,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 17:06:36,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 362 transitions. [2024-11-08 17:06:36,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48787061994609165 [2024-11-08 17:06:36,186 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 361 flow. Second operand 14 states and 362 transitions. [2024-11-08 17:06:36,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 192 transitions, 1259 flow [2024-11-08 17:06:36,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 192 transitions, 1149 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-08 17:06:36,200 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 388 flow [2024-11-08 17:06:36,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=388, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-11-08 17:06:36,202 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 42 predicate places. [2024-11-08 17:06:36,202 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 388 flow [2024-11-08 17:06:36,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 19.142857142857142) internal successors, (402), 21 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:36,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:36,203 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:36,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:06:36,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 17:06:36,409 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:36,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:36,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1136779825, now seen corresponding path program 1 times [2024-11-08 17:06:36,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:36,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411761249] [2024-11-08 17:06:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:36,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:06:36,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:36,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411761249] [2024-11-08 17:06:36,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411761249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:36,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80375465] [2024-11-08 17:06:36,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:36,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:36,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:36,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:36,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:06:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:36,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 17:06:36,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:36,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:06:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:37,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80375465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:06:37,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:06:37,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 21 [2024-11-08 17:06:37,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730448683] [2024-11-08 17:06:37,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:06:37,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 17:06:37,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:37,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 17:06:37,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:06:37,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:06:37,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 388 flow. Second operand has 21 states, 21 states have (on average 19.19047619047619) internal successors, (403), 21 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:37,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:37,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:06:37,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:40,329 INFO L124 PetriNetUnfolderBase]: 5810/8652 cut-off events. [2024-11-08 17:06:40,329 INFO L125 PetriNetUnfolderBase]: For 6660/7688 co-relation queries the response was YES. [2024-11-08 17:06:40,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23554 conditions, 8652 events. 5810/8652 cut-off events. For 6660/7688 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 52071 event pairs, 686 based on Foata normal form. 111/8300 useless extension candidates. Maximal degree in co-relation 23506. Up to 1008 conditions per place. [2024-11-08 17:06:40,421 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 145 selfloop transitions, 19 changer transitions 118/296 dead transitions. [2024-11-08 17:06:40,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 296 transitions, 1799 flow [2024-11-08 17:06:40,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 17:06:40,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-08 17:06:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 545 transitions. [2024-11-08 17:06:40,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5141509433962265 [2024-11-08 17:06:40,427 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 388 flow. Second operand 20 states and 545 transitions. [2024-11-08 17:06:40,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 296 transitions, 1799 flow [2024-11-08 17:06:40,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 296 transitions, 1787 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 17:06:40,451 INFO L231 Difference]: Finished difference. Result has 106 places, 64 transitions, 344 flow [2024-11-08 17:06:40,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=344, PETRI_PLACES=106, PETRI_TRANSITIONS=64} [2024-11-08 17:06:40,455 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 56 predicate places. [2024-11-08 17:06:40,455 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 64 transitions, 344 flow [2024-11-08 17:06:40,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 19.19047619047619) internal successors, (403), 21 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:40,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:40,456 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-08 17:06:40,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:06:40,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 17:06:40,661 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:40,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:40,662 INFO L85 PathProgramCache]: Analyzing trace with hash -14760794, now seen corresponding path program 2 times [2024-11-08 17:06:40,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:40,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437717473] [2024-11-08 17:06:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:40,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:40,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:40,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437717473] [2024-11-08 17:06:40,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437717473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:40,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490656463] [2024-11-08 17:06:40,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:06:40,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:40,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:40,958 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:40,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:06:41,050 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:06:41,051 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:06:41,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:06:41,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 17:06:41,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:06:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 17:06:41,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490656463] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:06:41,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:06:41,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3, 3] total 13 [2024-11-08 17:06:41,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232658273] [2024-11-08 17:06:41,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:06:41,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:06:41,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:41,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:06:41,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:06:41,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-08 17:06:41,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 64 transitions, 344 flow. Second operand has 15 states, 15 states have (on average 23.533333333333335) internal successors, (353), 15 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:41,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:41,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-08 17:06:41,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:41,964 INFO L124 PetriNetUnfolderBase]: 1795/2953 cut-off events. [2024-11-08 17:06:41,964 INFO L125 PetriNetUnfolderBase]: For 4005/4187 co-relation queries the response was YES. [2024-11-08 17:06:41,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8533 conditions, 2953 events. 1795/2953 cut-off events. For 4005/4187 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 17408 event pairs, 1284 based on Foata normal form. 2/2907 useless extension candidates. Maximal degree in co-relation 8478. Up to 2254 conditions per place. [2024-11-08 17:06:42,009 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 37 selfloop transitions, 19 changer transitions 0/76 dead transitions. [2024-11-08 17:06:42,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 76 transitions, 539 flow [2024-11-08 17:06:42,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:06:42,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 17:06:42,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 381 transitions. [2024-11-08 17:06:42,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47924528301886793 [2024-11-08 17:06:42,012 INFO L175 Difference]: Start difference. First operand has 106 places, 64 transitions, 344 flow. Second operand 15 states and 381 transitions. [2024-11-08 17:06:42,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 76 transitions, 539 flow [2024-11-08 17:06:42,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 76 transitions, 464 flow, removed 11 selfloop flow, removed 19 redundant places. [2024-11-08 17:06:42,022 INFO L231 Difference]: Finished difference. Result has 86 places, 68 transitions, 349 flow [2024-11-08 17:06:42,023 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=349, PETRI_PLACES=86, PETRI_TRANSITIONS=68} [2024-11-08 17:06:42,023 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2024-11-08 17:06:42,024 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 68 transitions, 349 flow [2024-11-08 17:06:42,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.533333333333335) internal successors, (353), 15 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:42,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:42,025 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:42,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:06:42,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 17:06:42,229 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:42,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:42,230 INFO L85 PathProgramCache]: Analyzing trace with hash 972164827, now seen corresponding path program 1 times [2024-11-08 17:06:42,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:42,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115467469] [2024-11-08 17:06:42,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:42,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:06:42,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:42,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115467469] [2024-11-08 17:06:42,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115467469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:42,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924359095] [2024-11-08 17:06:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:42,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:42,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:42,335 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:42,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:06:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:42,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:06:42,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:06:42,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:06:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:06:42,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924359095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:06:42,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:06:42,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 17:06:42,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966249434] [2024-11-08 17:06:42,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:06:42,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:06:42,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:42,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:06:42,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:06:42,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-08 17:06:42,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 68 transitions, 349 flow. Second operand has 12 states, 12 states have (on average 26.5) internal successors, (318), 12 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:42,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:42,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-08 17:06:42,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:44,160 INFO L124 PetriNetUnfolderBase]: 3800/6521 cut-off events. [2024-11-08 17:06:44,160 INFO L125 PetriNetUnfolderBase]: For 4994/5376 co-relation queries the response was YES. [2024-11-08 17:06:44,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15992 conditions, 6521 events. 3800/6521 cut-off events. For 4994/5376 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 42291 event pairs, 1105 based on Foata normal form. 258/6739 useless extension candidates. Maximal degree in co-relation 15875. Up to 2234 conditions per place. [2024-11-08 17:06:44,223 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 177 selfloop transitions, 13 changer transitions 0/213 dead transitions. [2024-11-08 17:06:44,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 213 transitions, 1259 flow [2024-11-08 17:06:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:06:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 17:06:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 393 transitions. [2024-11-08 17:06:44,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7415094339622641 [2024-11-08 17:06:44,226 INFO L175 Difference]: Start difference. First operand has 86 places, 68 transitions, 349 flow. Second operand 10 states and 393 transitions. [2024-11-08 17:06:44,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 213 transitions, 1259 flow [2024-11-08 17:06:44,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 213 transitions, 1185 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-11-08 17:06:44,241 INFO L231 Difference]: Finished difference. Result has 85 places, 77 transitions, 361 flow [2024-11-08 17:06:44,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=361, PETRI_PLACES=85, PETRI_TRANSITIONS=77} [2024-11-08 17:06:44,242 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 35 predicate places. [2024-11-08 17:06:44,243 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 361 flow [2024-11-08 17:06:44,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.5) internal successors, (318), 12 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:44,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:44,243 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:44,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:06:44,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 17:06:44,445 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:44,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:44,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1685288849, now seen corresponding path program 1 times [2024-11-08 17:06:44,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:44,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385948251] [2024-11-08 17:06:44,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:44,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:06:44,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:44,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385948251] [2024-11-08 17:06:44,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385948251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:44,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210556363] [2024-11-08 17:06:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:44,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:44,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:44,711 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:44,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:06:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:44,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:06:44,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:06:44,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:06:44,912 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:06:44,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210556363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:06:44,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:06:44,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 17:06:44,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164925104] [2024-11-08 17:06:44,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:06:44,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:06:44,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:44,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:06:44,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:06:44,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-08 17:06:44,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 77 transitions, 361 flow. Second operand has 12 states, 12 states have (on average 26.666666666666668) internal successors, (320), 12 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:44,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:44,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-08 17:06:44,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:46,826 INFO L124 PetriNetUnfolderBase]: 7597/12665 cut-off events. [2024-11-08 17:06:46,826 INFO L125 PetriNetUnfolderBase]: For 17684/18269 co-relation queries the response was YES. [2024-11-08 17:06:46,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34582 conditions, 12665 events. 7597/12665 cut-off events. For 17684/18269 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 86400 event pairs, 2001 based on Foata normal form. 498/13096 useless extension candidates. Maximal degree in co-relation 34492. Up to 4170 conditions per place. [2024-11-08 17:06:46,951 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 250 selfloop transitions, 13 changer transitions 0/286 dead transitions. [2024-11-08 17:06:46,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 286 transitions, 2054 flow [2024-11-08 17:06:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:06:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 17:06:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 385 transitions. [2024-11-08 17:06:46,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2024-11-08 17:06:46,959 INFO L175 Difference]: Start difference. First operand has 85 places, 77 transitions, 361 flow. Second operand 10 states and 385 transitions. [2024-11-08 17:06:46,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 286 transitions, 2054 flow [2024-11-08 17:06:46,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 286 transitions, 1955 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-11-08 17:06:47,000 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 433 flow [2024-11-08 17:06:47,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=433, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-11-08 17:06:47,001 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 45 predicate places. [2024-11-08 17:06:47,001 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 433 flow [2024-11-08 17:06:47,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.666666666666668) internal successors, (320), 12 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:47,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:47,002 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:47,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 17:06:47,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 17:06:47,204 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:47,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:47,204 INFO L85 PathProgramCache]: Analyzing trace with hash -50445046, now seen corresponding path program 2 times [2024-11-08 17:06:47,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:47,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856827753] [2024-11-08 17:06:47,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:47,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 27 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:47,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:47,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856827753] [2024-11-08 17:06:47,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856827753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:47,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364324826] [2024-11-08 17:06:47,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:06:47,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:47,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:47,775 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:47,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:06:47,875 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:06:47,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:06:47,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:06:47,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:47,982 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 17:06:47,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:06:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 17:06:48,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364324826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:06:48,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:06:48,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 3, 3] total 19 [2024-11-08 17:06:48,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588946402] [2024-11-08 17:06:48,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:06:48,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 17:06:48,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:48,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 17:06:48,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:06:48,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:06:48,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 433 flow. Second operand has 20 states, 20 states have (on average 19.0) internal successors, (380), 20 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:48,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:48,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:06:48,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:53,255 INFO L124 PetriNetUnfolderBase]: 20576/30484 cut-off events. [2024-11-08 17:06:53,255 INFO L125 PetriNetUnfolderBase]: For 47724/50271 co-relation queries the response was YES. [2024-11-08 17:06:53,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93724 conditions, 30484 events. 20576/30484 cut-off events. For 47724/50271 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 199287 event pairs, 3382 based on Foata normal form. 316/30751 useless extension candidates. Maximal degree in co-relation 78625. Up to 5881 conditions per place. [2024-11-08 17:06:53,553 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 363 selfloop transitions, 45 changer transitions 0/422 dead transitions. [2024-11-08 17:06:53,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 422 transitions, 3010 flow [2024-11-08 17:06:53,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 17:06:53,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-08 17:06:53,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 574 transitions. [2024-11-08 17:06:53,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5157232704402516 [2024-11-08 17:06:53,556 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 433 flow. Second operand 21 states and 574 transitions. [2024-11-08 17:06:53,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 422 transitions, 3010 flow [2024-11-08 17:06:54,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 422 transitions, 2853 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-11-08 17:06:54,037 INFO L231 Difference]: Finished difference. Result has 111 places, 104 transitions, 613 flow [2024-11-08 17:06:54,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=613, PETRI_PLACES=111, PETRI_TRANSITIONS=104} [2024-11-08 17:06:54,038 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 61 predicate places. [2024-11-08 17:06:54,038 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 104 transitions, 613 flow [2024-11-08 17:06:54,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.0) internal successors, (380), 20 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:54,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:06:54,039 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:54,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 17:06:54,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 17:06:54,240 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-08 17:06:54,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash -559897536, now seen corresponding path program 2 times [2024-11-08 17:06:54,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:54,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698576440] [2024-11-08 17:06:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:54,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 27 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:54,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698576440] [2024-11-08 17:06:54,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698576440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680336201] [2024-11-08 17:06:54,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:06:54,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:54,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:54,680 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:54,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:06:54,783 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:06:54,783 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:06:54,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:06:54,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-08 17:06:54,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:06:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-08 17:06:55,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680336201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:06:55,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:06:55,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 2, 2] total 19 [2024-11-08 17:06:55,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881818720] [2024-11-08 17:06:55,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:06:55,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 17:06:55,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:55,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 17:06:55,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:06:55,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:06:55,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 104 transitions, 613 flow. Second operand has 20 states, 20 states have (on average 19.15) internal successors, (383), 20 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:55,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:06:55,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:06:55,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:06:59,146 INFO L124 PetriNetUnfolderBase]: 16617/23706 cut-off events. [2024-11-08 17:06:59,146 INFO L125 PetriNetUnfolderBase]: For 64100/70543 co-relation queries the response was YES. [2024-11-08 17:06:59,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78269 conditions, 23706 events. 16617/23706 cut-off events. For 64100/70543 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 141520 event pairs, 5021 based on Foata normal form. 272/23950 useless extension candidates. Maximal degree in co-relation 64172. Up to 8995 conditions per place. [2024-11-08 17:06:59,274 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 0 selfloop transitions, 0 changer transitions 292/292 dead transitions. [2024-11-08 17:06:59,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 292 transitions, 2198 flow [2024-11-08 17:06:59,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 17:06:59,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-08 17:06:59,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 472 transitions. [2024-11-08 17:06:59,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4947589098532495 [2024-11-08 17:06:59,276 INFO L175 Difference]: Start difference. First operand has 111 places, 104 transitions, 613 flow. Second operand 18 states and 472 transitions. [2024-11-08 17:06:59,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 292 transitions, 2198 flow [2024-11-08 17:06:59,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 292 transitions, 2171 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-08 17:06:59,382 INFO L231 Difference]: Finished difference. Result has 118 places, 0 transitions, 0 flow [2024-11-08 17:06:59,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=118, PETRI_TRANSITIONS=0} [2024-11-08 17:06:59,383 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 68 predicate places. [2024-11-08 17:06:59,383 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 0 transitions, 0 flow [2024-11-08 17:06:59,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.15) internal successors, (383), 20 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:59,391 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2024-11-08 17:06:59,392 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-08 17:06:59,392 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-08 17:06:59,392 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-08 17:06:59,392 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-08 17:06:59,393 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-08 17:06:59,393 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-08 17:06:59,393 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-08 17:06:59,393 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2024-11-08 17:06:59,393 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2024-11-08 17:06:59,393 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2024-11-08 17:06:59,393 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-08 17:06:59,393 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-08 17:06:59,393 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-08 17:06:59,393 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-08 17:06:59,394 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-08 17:06:59,394 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-08 17:06:59,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 17:06:59,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 17:06:59,595 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:59,605 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-08 17:06:59,605 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 17:06:59,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 05:06:59 BasicIcfg [2024-11-08 17:06:59,614 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 17:06:59,615 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 17:06:59,615 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 17:06:59,616 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 17:06:59,616 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:06:20" (3/4) ... [2024-11-08 17:06:59,619 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 17:06:59,623 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-08 17:06:59,623 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-08 17:06:59,623 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-08 17:06:59,634 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 88 nodes and edges [2024-11-08 17:06:59,634 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-11-08 17:06:59,635 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-08 17:06:59,635 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-08 17:06:59,773 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/witness.graphml [2024-11-08 17:06:59,773 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/witness.yml [2024-11-08 17:06:59,774 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 17:06:59,775 INFO L158 Benchmark]: Toolchain (without parser) took 41487.88ms. Allocated memory was 153.1MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 118.2MB in the beginning and 7.0GB in the end (delta: -6.9GB). Peak memory consumption was 838.3MB. Max. memory is 16.1GB. [2024-11-08 17:06:59,775 INFO L158 Benchmark]: CDTParser took 1.89ms. Allocated memory is still 113.2MB. Free memory was 90.8MB in the beginning and 90.7MB in the end (delta: 128.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 17:06:59,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.08ms. Allocated memory is still 153.1MB. Free memory was 117.8MB in the beginning and 104.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 17:06:59,776 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.24ms. Allocated memory is still 153.1MB. Free memory was 104.4MB in the beginning and 102.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 17:06:59,777 INFO L158 Benchmark]: Boogie Preprocessor took 73.31ms. Allocated memory is still 153.1MB. Free memory was 102.6MB in the beginning and 100.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 17:06:59,777 INFO L158 Benchmark]: RCFGBuilder took 1135.66ms. Allocated memory is still 153.1MB. Free memory was 100.2MB in the beginning and 123.0MB in the end (delta: -22.8MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2024-11-08 17:06:59,778 INFO L158 Benchmark]: TraceAbstraction took 39537.68ms. Allocated memory was 153.1MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 121.9MB in the beginning and 7.0GB in the end (delta: -6.9GB). Peak memory consumption was 979.0MB. Max. memory is 16.1GB. [2024-11-08 17:06:59,779 INFO L158 Benchmark]: Witness Printer took 158.60ms. Allocated memory is still 7.9GB. Free memory was 7.0GB in the beginning and 7.0GB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-08 17:06:59,782 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.89ms. Allocated memory is still 113.2MB. Free memory was 90.8MB in the beginning and 90.7MB in the end (delta: 128.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 498.08ms. Allocated memory is still 153.1MB. Free memory was 117.8MB in the beginning and 104.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.24ms. Allocated memory is still 153.1MB. Free memory was 104.4MB in the beginning and 102.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.31ms. Allocated memory is still 153.1MB. Free memory was 102.6MB in the beginning and 100.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1135.66ms. Allocated memory is still 153.1MB. Free memory was 100.2MB in the beginning and 123.0MB in the end (delta: -22.8MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. * TraceAbstraction took 39537.68ms. Allocated memory was 153.1MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 121.9MB in the beginning and 7.0GB in the end (delta: -6.9GB). Peak memory consumption was 979.0MB. Max. memory is 16.1GB. * Witness Printer took 158.60ms. Allocated memory is still 7.9GB. Free memory was 7.0GB in the beginning and 7.0GB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: 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, 76 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: 39.3s, OverallIterations: 17, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 29.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3081 SdHoareTripleChecker+Valid, 9.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2869 mSDsluCounter, 2476 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2424 mSDsCounter, 134 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10369 IncrementalHoareTripleChecker+Invalid, 10503 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 134 mSolverCounterUnsat, 52 mSDtfsCounter, 10369 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 581 GetRequests, 315 SyntacticMatches, 7 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=613occurred in iteration=16, InterpolantAutomatonStates: 177, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 475 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 632 ConstructedInterpolants, 0 QuantifiedInterpolants, 2069 SizeOfPredicates, 43 NumberOfNonLiveVariables, 1057 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 36 InterpolantComputations, 8 PerfectInterpolantSequences, 313/507 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! [2024-11-08 17:06:59,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1d420e-b7d0-43b9-8229-ca2736faf447/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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