./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.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_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/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_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/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_12635284-7433-4e90-8e66-7a6c444cd855/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 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:09:44,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:09:44,308 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 16:09:44,315 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:09:44,315 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:09:44,358 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:09:44,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:09:44,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:09:44,361 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:09:44,362 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:09:44,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:09:44,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:09:44,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:09:44,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:09:44,367 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:09:44,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:09:44,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:09:44,368 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:09:44,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:09:44,369 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:09:44,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:09:44,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:09:44,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:09:44,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:09:44,372 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:09:44,373 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:09:44,373 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:09:44,374 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:09:44,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:09:44,374 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:09:44,375 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:09:44,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:09:44,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:09:44,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:09:44,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:09:44,377 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:09:44,377 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:09:44,377 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:09:44,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:09:44,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:09:44,378 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:09:44,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:09:44,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:09:44,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:09:44,380 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_12635284-7433-4e90-8e66-7a6c444cd855/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2024-11-08 16:09:44,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:09:44,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:09:44,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:09:44,697 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:09:44,697 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:09:44,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c Unable to find full path for "g++" [2024-11-08 16:09:46,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:09:46,848 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:09:46,849 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-11-08 16:09:46,856 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/data/9e5adcd86/f5263ecf3d6042b58dbce02eee02c280/FLAG1785bca25 [2024-11-08 16:09:47,195 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/data/9e5adcd86/f5263ecf3d6042b58dbce02eee02c280 [2024-11-08 16:09:47,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:09:47,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:09:47,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:09:47,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:09:47,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:09:47,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:09:47" (1/1) ... [2024-11-08 16:09:47,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac13742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47, skipping insertion in model container [2024-11-08 16:09:47,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:09:47" (1/1) ... [2024-11-08 16:09:47,243 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:09:47,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:09:47,505 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:09:47,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:09:47,565 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:09:47,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47 WrapperNode [2024-11-08 16:09:47,566 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:09:47,567 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:09:47,568 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:09:47,568 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:09:47,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47" (1/1) ... [2024-11-08 16:09:47,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47" (1/1) ... [2024-11-08 16:09:47,615 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 230 [2024-11-08 16:09:47,615 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:09:47,616 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:09:47,616 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:09:47,616 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:09:47,630 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47" (1/1) ... [2024-11-08 16:09:47,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47" (1/1) ... [2024-11-08 16:09:47,638 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47" (1/1) ... [2024-11-08 16:09:47,669 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 16:09:47,673 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47" (1/1) ... [2024-11-08 16:09:47,673 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47" (1/1) ... [2024-11-08 16:09:47,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47" (1/1) ... [2024-11-08 16:09:47,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47" (1/1) ... [2024-11-08 16:09:47,697 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47" (1/1) ... [2024-11-08 16:09:47,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47" (1/1) ... [2024-11-08 16:09:47,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:09:47,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:09:47,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:09:47,709 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:09:47,710 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47" (1/1) ... [2024-11-08 16:09:47,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:09:47,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:47,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:09:47,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:09:47,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:09:47,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 16:09:47,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 16:09:47,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 16:09:47,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 16:09:47,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 16:09:47,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 16:09:47,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:09:47,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:09:47,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:09:47,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:09:47,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 16:09:47,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 16:09:47,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 16:09:47,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:09:47,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:09:47,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:09:47,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:09:47,790 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 16:09:47,955 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:09:47,962 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:09:48,513 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:09:48,513 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:09:49,150 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:09:49,151 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:09:49,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:09:49 BoogieIcfgContainer [2024-11-08 16:09:49,152 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:09:49,154 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:09:49,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:09:49,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:09:49,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:09:47" (1/3) ... [2024-11-08 16:09:49,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628884ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:09:49, skipping insertion in model container [2024-11-08 16:09:49,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:47" (2/3) ... [2024-11-08 16:09:49,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628884ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:09:49, skipping insertion in model container [2024-11-08 16:09:49,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:09:49" (3/3) ... [2024-11-08 16:09:49,167 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2024-11-08 16:09:49,188 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:09:49,189 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-08 16:09:49,189 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:09:49,413 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 16:09:49,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 77 transitions, 175 flow [2024-11-08 16:09:49,538 INFO L124 PetriNetUnfolderBase]: 8/74 cut-off events. [2024-11-08 16:09:49,539 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 16:09:49,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 74 events. 8/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 258 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-11-08 16:09:49,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 77 transitions, 175 flow [2024-11-08 16:09:49,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 72 transitions, 159 flow [2024-11-08 16:09:49,557 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:09:49,565 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;@5ca15561, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:09:49,566 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-11-08 16:09:49,570 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:09:49,570 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-08 16:09:49,570 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:09:49,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:49,571 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 16:09:49,572 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:09:49,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:49,578 INFO L85 PathProgramCache]: Analyzing trace with hash 24031138, now seen corresponding path program 1 times [2024-11-08 16:09:49,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:49,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523777015] [2024-11-08 16:09:49,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:49,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:49,882 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 16:09:49,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:49,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523777015] [2024-11-08 16:09:49,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523777015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:49,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:49,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:09:49,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126717587] [2024-11-08 16:09:49,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:49,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:09:49,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:49,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:09:49,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:09:49,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-11-08 16:09:49,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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 16:09:49,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:49,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-11-08 16:09:49,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:51,197 INFO L124 PetriNetUnfolderBase]: 3054/4874 cut-off events. [2024-11-08 16:09:51,197 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2024-11-08 16:09:51,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9315 conditions, 4874 events. 3054/4874 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 35433 event pairs, 2534 based on Foata normal form. 1/2620 useless extension candidates. Maximal degree in co-relation 8792. Up to 4217 conditions per place. [2024-11-08 16:09:51,244 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 37 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-11-08 16:09:51,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 235 flow [2024-11-08 16:09:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:09:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:09:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-11-08 16:09:51,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5616883116883117 [2024-11-08 16:09:51,260 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 159 flow. Second operand 4 states and 173 transitions. [2024-11-08 16:09:51,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 235 flow [2024-11-08 16:09:51,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 226 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 16:09:51,295 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 167 flow [2024-11-08 16:09:51,297 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-11-08 16:09:51,303 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -6 predicate places. [2024-11-08 16:09:51,303 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 167 flow [2024-11-08 16:09:51,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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 16:09:51,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:51,305 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:51,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:09:51,305 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:09:51,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:51,308 INFO L85 PathProgramCache]: Analyzing trace with hash -370680787, now seen corresponding path program 1 times [2024-11-08 16:09:51,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:51,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708334318] [2024-11-08 16:09:51,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:51,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:51,536 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 16:09:51,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:51,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708334318] [2024-11-08 16:09:51,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708334318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:51,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:51,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:09:51,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718242933] [2024-11-08 16:09:51,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:51,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:09:51,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:51,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:09:51,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:09:51,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-08 16:09:51,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 16:09:51,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:51,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-08 16:09:51,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:53,352 INFO L124 PetriNetUnfolderBase]: 4989/8035 cut-off events. [2024-11-08 16:09:53,353 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-08 16:09:53,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15203 conditions, 8035 events. 4989/8035 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 59747 event pairs, 3788 based on Foata normal form. 146/5026 useless extension candidates. Maximal degree in co-relation 11693. Up to 5361 conditions per place. [2024-11-08 16:09:53,425 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 85 selfloop transitions, 7 changer transitions 0/118 dead transitions. [2024-11-08 16:09:53,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 118 transitions, 458 flow [2024-11-08 16:09:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:09:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:09:53,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 267 transitions. [2024-11-08 16:09:53,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.577922077922078 [2024-11-08 16:09:53,431 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 167 flow. Second operand 6 states and 267 transitions. [2024-11-08 16:09:53,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 118 transitions, 458 flow [2024-11-08 16:09:53,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 118 transitions, 455 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:09:53,435 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 205 flow [2024-11-08 16:09:53,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2024-11-08 16:09:53,437 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 1 predicate places. [2024-11-08 16:09:53,437 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 205 flow [2024-11-08 16:09:53,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 16:09:53,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:53,439 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 16:09:53,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:09:53,440 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:09:53,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:53,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1187954202, now seen corresponding path program 1 times [2024-11-08 16:09:53,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:53,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647034069] [2024-11-08 16:09:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:53,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:53,605 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 16:09:53,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:53,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647034069] [2024-11-08 16:09:53,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647034069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:09:53,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512310741] [2024-11-08 16:09:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:53,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:53,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:53,609 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:09:53,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:09:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:53,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:09:53,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:09:53,817 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 16:09:53,821 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:09:53,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512310741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:53,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:09:53,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 16:09:53,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489598156] [2024-11-08 16:09:53,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:53,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:09:53,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:53,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:09:53,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:09:53,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-11-08 16:09:53,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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 16:09:53,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:53,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-11-08 16:09:53,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:55,355 INFO L124 PetriNetUnfolderBase]: 4147/6765 cut-off events. [2024-11-08 16:09:55,356 INFO L125 PetriNetUnfolderBase]: For 1177/1281 co-relation queries the response was YES. [2024-11-08 16:09:55,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13663 conditions, 6765 events. 4147/6765 cut-off events. For 1177/1281 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 51574 event pairs, 3468 based on Foata normal form. 1/3830 useless extension candidates. Maximal degree in co-relation 9627. Up to 5775 conditions per place. [2024-11-08 16:09:55,410 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 35 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-11-08 16:09:55,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 285 flow [2024-11-08 16:09:55,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:09:55,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:09:55,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2024-11-08 16:09:55,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49134199134199136 [2024-11-08 16:09:55,413 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 205 flow. Second operand 6 states and 227 transitions. [2024-11-08 16:09:55,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 285 flow [2024-11-08 16:09:55,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 72 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:09:55,419 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 213 flow [2024-11-08 16:09:55,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2024-11-08 16:09:55,420 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2024-11-08 16:09:55,420 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 213 flow [2024-11-08 16:09:55,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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 16:09:55,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:55,421 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 16:09:55,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:09:55,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:55,622 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:09:55,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:55,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1828124643, now seen corresponding path program 1 times [2024-11-08 16:09:55,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:55,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758025111] [2024-11-08 16:09:55,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:55,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:55,757 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 16:09:55,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:55,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758025111] [2024-11-08 16:09:55,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758025111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:09:55,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687763605] [2024-11-08 16:09:55,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:55,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:55,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:55,762 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:09:55,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:09:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:55,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:09:55,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:09:55,912 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 16:09:55,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:09:55,971 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 16:09:55,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687763605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:09:55,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:09:55,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 16:09:55,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127163222] [2024-11-08 16:09:55,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:09:55,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 16:09:55,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:55,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 16:09:55,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:09:56,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-11-08 16:09:56,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 213 flow. Second operand has 12 states, 12 states have (on average 32.083333333333336) internal successors, (385), 12 states have internal predecessors, (385), 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 16:09:56,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:56,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-11-08 16:09:56,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:57,211 INFO L124 PetriNetUnfolderBase]: 4153/6786 cut-off events. [2024-11-08 16:09:57,211 INFO L125 PetriNetUnfolderBase]: For 1223/1327 co-relation queries the response was YES. [2024-11-08 16:09:57,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13723 conditions, 6786 events. 4153/6786 cut-off events. For 1223/1327 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 51857 event pairs, 3468 based on Foata normal form. 3/3854 useless extension candidates. Maximal degree in co-relation 9623. Up to 5782 conditions per place. [2024-11-08 16:09:57,266 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 38 selfloop transitions, 13 changer transitions 0/81 dead transitions. [2024-11-08 16:09:57,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 81 transitions, 369 flow [2024-11-08 16:09:57,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:09:57,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:09:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 362 transitions. [2024-11-08 16:09:57,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4701298701298701 [2024-11-08 16:09:57,269 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 213 flow. Second operand 10 states and 362 transitions. [2024-11-08 16:09:57,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 81 transitions, 369 flow [2024-11-08 16:09:57,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 81 transitions, 339 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-08 16:09:57,273 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 281 flow [2024-11-08 16:09:57,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=281, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2024-11-08 16:09:57,275 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2024-11-08 16:09:57,275 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 281 flow [2024-11-08 16:09:57,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.083333333333336) internal successors, (385), 12 states have internal predecessors, (385), 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 16:09:57,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:57,276 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:57,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:09:57,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:57,480 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:09:57,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:57,481 INFO L85 PathProgramCache]: Analyzing trace with hash -950413678, now seen corresponding path program 1 times [2024-11-08 16:09:57,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:57,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427884747] [2024-11-08 16:09:57,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:57,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:57,623 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 16:09:57,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:57,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427884747] [2024-11-08 16:09:57,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427884747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:57,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:57,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:09:57,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621042123] [2024-11-08 16:09:57,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:57,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:09:57,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:57,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:09:57,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:09:57,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-08 16:09:57,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 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 16:09:57,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:57,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-08 16:09:57,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:59,168 INFO L124 PetriNetUnfolderBase]: 4246/6954 cut-off events. [2024-11-08 16:09:59,168 INFO L125 PetriNetUnfolderBase]: For 828/1008 co-relation queries the response was YES. [2024-11-08 16:09:59,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13750 conditions, 6954 events. 4246/6954 cut-off events. For 828/1008 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 51663 event pairs, 3396 based on Foata normal form. 62/4459 useless extension candidates. Maximal degree in co-relation 13704. Up to 5407 conditions per place. [2024-11-08 16:09:59,238 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 79 selfloop transitions, 7 changer transitions 2/113 dead transitions. [2024-11-08 16:09:59,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 538 flow [2024-11-08 16:09:59,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:09:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:09:59,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 254 transitions. [2024-11-08 16:09:59,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5497835497835498 [2024-11-08 16:09:59,240 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 281 flow. Second operand 6 states and 254 transitions. [2024-11-08 16:09:59,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 113 transitions, 538 flow [2024-11-08 16:09:59,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 113 transitions, 527 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-08 16:09:59,246 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 299 flow [2024-11-08 16:09:59,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2024-11-08 16:09:59,247 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2024-11-08 16:09:59,247 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 299 flow [2024-11-08 16:09:59,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 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 16:09:59,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:59,248 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:59,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:09:59,249 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:09:59,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:59,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1261170345, now seen corresponding path program 1 times [2024-11-08 16:09:59,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:59,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009306133] [2024-11-08 16:09:59,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:59,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:09:59,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:59,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009306133] [2024-11-08 16:09:59,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009306133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:59,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:59,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:09:59,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669025096] [2024-11-08 16:09:59,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:59,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:09:59,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:59,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:09:59,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:09:59,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-11-08 16:09:59,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 299 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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 16:09:59,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:59,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-11-08 16:09:59,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:00,681 INFO L124 PetriNetUnfolderBase]: 5137/9050 cut-off events. [2024-11-08 16:10:00,681 INFO L125 PetriNetUnfolderBase]: For 1726/1994 co-relation queries the response was YES. [2024-11-08 16:10:00,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17948 conditions, 9050 events. 5137/9050 cut-off events. For 1726/1994 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 73271 event pairs, 1893 based on Foata normal form. 0/5711 useless extension candidates. Maximal degree in co-relation 17902. Up to 3855 conditions per place. [2024-11-08 16:10:00,772 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 77 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2024-11-08 16:10:00,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 110 transitions, 522 flow [2024-11-08 16:10:00,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:10:00,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:10:00,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2024-11-08 16:10:00,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70995670995671 [2024-11-08 16:10:00,774 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 299 flow. Second operand 3 states and 164 transitions. [2024-11-08 16:10:00,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 110 transitions, 522 flow [2024-11-08 16:10:00,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 110 transitions, 513 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:10:00,782 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 304 flow [2024-11-08 16:10:00,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2024-11-08 16:10:00,783 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2024-11-08 16:10:00,783 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 304 flow [2024-11-08 16:10:00,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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 16:10:00,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:00,784 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:00,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:10:00,784 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:10:00,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:00,785 INFO L85 PathProgramCache]: Analyzing trace with hash 972979569, now seen corresponding path program 1 times [2024-11-08 16:10:00,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:00,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994069768] [2024-11-08 16:10:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:00,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:00,891 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 16:10:00,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:00,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994069768] [2024-11-08 16:10:00,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994069768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:00,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:00,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:10:00,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880859751] [2024-11-08 16:10:00,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:00,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:10:00,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:00,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:10:00,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:10:00,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-11-08 16:10:00,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 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 16:10:00,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:00,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-11-08 16:10:00,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:02,293 INFO L124 PetriNetUnfolderBase]: 7144/12586 cut-off events. [2024-11-08 16:10:02,293 INFO L125 PetriNetUnfolderBase]: For 3016/3598 co-relation queries the response was YES. [2024-11-08 16:10:02,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25882 conditions, 12586 events. 7144/12586 cut-off events. For 3016/3598 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 103507 event pairs, 2041 based on Foata normal form. 0/8288 useless extension candidates. Maximal degree in co-relation 25835. Up to 6942 conditions per place. [2024-11-08 16:10:02,398 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 78 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2024-11-08 16:10:02,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 112 transitions, 559 flow [2024-11-08 16:10:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:10:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:10:02,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-11-08 16:10:02,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7012987012987013 [2024-11-08 16:10:02,400 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 304 flow. Second operand 3 states and 162 transitions. [2024-11-08 16:10:02,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 112 transitions, 559 flow [2024-11-08 16:10:02,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 112 transitions, 556 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:10:02,413 INFO L231 Difference]: Finished difference. Result has 93 places, 86 transitions, 327 flow [2024-11-08 16:10:02,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=93, PETRI_TRANSITIONS=86} [2024-11-08 16:10:02,414 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2024-11-08 16:10:02,414 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 86 transitions, 327 flow [2024-11-08 16:10:02,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 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 16:10:02,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:02,415 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:02,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:10:02,415 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:10:02,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:02,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1261170342, now seen corresponding path program 1 times [2024-11-08 16:10:02,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:02,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404503293] [2024-11-08 16:10:02,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:02,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:02,713 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 16:10:02,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:02,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404503293] [2024-11-08 16:10:02,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404503293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:02,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838356274] [2024-11-08 16:10:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:02,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:02,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:02,716 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:02,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:10:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:02,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 16:10:02,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:02,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 16:10:02,977 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 16:10:02,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:10:03,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-08 16:10:03,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-08 16:10:03,068 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 16:10:03,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838356274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:10:03,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:10:03,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-08 16:10:03,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830019626] [2024-11-08 16:10:03,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:10:03,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 16:10:03,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:03,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 16:10:03,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:10:03,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-11-08 16:10:03,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 327 flow. Second operand has 13 states, 13 states have (on average 34.53846153846154) internal successors, (449), 13 states have internal predecessors, (449), 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 16:10:03,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:03,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-11-08 16:10:03,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:04,887 INFO L124 PetriNetUnfolderBase]: 7027/11950 cut-off events. [2024-11-08 16:10:04,887 INFO L125 PetriNetUnfolderBase]: For 3567/4222 co-relation queries the response was YES. [2024-11-08 16:10:04,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26975 conditions, 11950 events. 7027/11950 cut-off events. For 3567/4222 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 92916 event pairs, 2220 based on Foata normal form. 0/8601 useless extension candidates. Maximal degree in co-relation 26927. Up to 4045 conditions per place. [2024-11-08 16:10:04,979 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 104 selfloop transitions, 16 changer transitions 1/152 dead transitions. [2024-11-08 16:10:04,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 152 transitions, 768 flow [2024-11-08 16:10:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:10:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 16:10:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 370 transitions. [2024-11-08 16:10:04,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6006493506493507 [2024-11-08 16:10:04,982 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 327 flow. Second operand 8 states and 370 transitions. [2024-11-08 16:10:04,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 152 transitions, 768 flow [2024-11-08 16:10:04,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 760 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:10:04,989 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 385 flow [2024-11-08 16:10:04,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=385, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2024-11-08 16:10:04,990 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2024-11-08 16:10:04,991 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 385 flow [2024-11-08 16:10:04,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 34.53846153846154) internal successors, (449), 13 states have internal predecessors, (449), 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 16:10:04,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:04,991 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:05,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 16:10:05,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:05,196 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:10:05,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:05,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1261170341, now seen corresponding path program 1 times [2024-11-08 16:10:05,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:05,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094031014] [2024-11-08 16:10:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:05,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:05,456 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 16:10:05,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:05,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094031014] [2024-11-08 16:10:05,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094031014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:05,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025222472] [2024-11-08 16:10:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:05,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:05,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:05,459 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:05,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:10:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:05,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 16:10:05,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:05,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 16:10:05,658 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 16:10:05,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:10:05,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-08 16:10:05,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-08 16:10:05,751 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 16:10:05,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025222472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:10:05,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:10:05,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-08 16:10:05,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11013031] [2024-11-08 16:10:05,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:10:05,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:10:05,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:05,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:10:05,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:10:05,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-11-08 16:10:05,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 385 flow. Second operand has 11 states, 11 states have (on average 34.45454545454545) internal successors, (379), 11 states have internal predecessors, (379), 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 16:10:05,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:05,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-11-08 16:10:05,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:07,971 INFO L124 PetriNetUnfolderBase]: 6571/12018 cut-off events. [2024-11-08 16:10:07,971 INFO L125 PetriNetUnfolderBase]: For 8535/9057 co-relation queries the response was YES. [2024-11-08 16:10:08,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29380 conditions, 12018 events. 6571/12018 cut-off events. For 8535/9057 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 101951 event pairs, 2740 based on Foata normal form. 202/9080 useless extension candidates. Maximal degree in co-relation 29329. Up to 4045 conditions per place. [2024-11-08 16:10:08,092 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 103 selfloop transitions, 16 changer transitions 1/151 dead transitions. [2024-11-08 16:10:08,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 151 transitions, 807 flow [2024-11-08 16:10:08,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:10:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 16:10:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 369 transitions. [2024-11-08 16:10:08,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.599025974025974 [2024-11-08 16:10:08,095 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 385 flow. Second operand 8 states and 369 transitions. [2024-11-08 16:10:08,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 151 transitions, 807 flow [2024-11-08 16:10:08,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 151 transitions, 778 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-08 16:10:08,113 INFO L231 Difference]: Finished difference. Result has 102 places, 88 transitions, 384 flow [2024-11-08 16:10:08,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=384, PETRI_PLACES=102, PETRI_TRANSITIONS=88} [2024-11-08 16:10:08,114 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 28 predicate places. [2024-11-08 16:10:08,114 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 88 transitions, 384 flow [2024-11-08 16:10:08,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.45454545454545) internal successors, (379), 11 states have internal predecessors, (379), 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 16:10:08,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:08,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:08,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:10:08,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:08,317 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:10:08,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:08,317 INFO L85 PathProgramCache]: Analyzing trace with hash 972979566, now seen corresponding path program 1 times [2024-11-08 16:10:08,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:08,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254845264] [2024-11-08 16:10:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:08,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:08,440 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 16:10:08,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:08,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254845264] [2024-11-08 16:10:08,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254845264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:08,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:08,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:10:08,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933417599] [2024-11-08 16:10:08,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:08,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:10:08,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:08,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:10:08,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:10:08,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 77 [2024-11-08 16:10:08,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 88 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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 16:10:08,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:08,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 77 [2024-11-08 16:10:08,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:10,193 INFO L124 PetriNetUnfolderBase]: 8616/12905 cut-off events. [2024-11-08 16:10:10,194 INFO L125 PetriNetUnfolderBase]: For 12648/13638 co-relation queries the response was YES. [2024-11-08 16:10:10,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35641 conditions, 12905 events. 8616/12905 cut-off events. For 12648/13638 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 91019 event pairs, 6324 based on Foata normal form. 0/9540 useless extension candidates. Maximal degree in co-relation 35589. Up to 10389 conditions per place. [2024-11-08 16:10:10,292 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 75 selfloop transitions, 5 changer transitions 26/129 dead transitions. [2024-11-08 16:10:10,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 129 transitions, 765 flow [2024-11-08 16:10:10,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:10:10,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 16:10:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 278 transitions. [2024-11-08 16:10:10,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5157699443413729 [2024-11-08 16:10:10,295 INFO L175 Difference]: Start difference. First operand has 102 places, 88 transitions, 384 flow. Second operand 7 states and 278 transitions. [2024-11-08 16:10:10,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 129 transitions, 765 flow [2024-11-08 16:10:10,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 129 transitions, 747 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 16:10:10,304 INFO L231 Difference]: Finished difference. Result has 105 places, 81 transitions, 343 flow [2024-11-08 16:10:10,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=105, PETRI_TRANSITIONS=81} [2024-11-08 16:10:10,304 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 31 predicate places. [2024-11-08 16:10:10,305 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 81 transitions, 343 flow [2024-11-08 16:10:10,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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 16:10:10,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:10,306 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:10,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 16:10:10,306 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:10:10,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:10,307 INFO L85 PathProgramCache]: Analyzing trace with hash 803950987, now seen corresponding path program 1 times [2024-11-08 16:10:10,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:10,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694645683] [2024-11-08 16:10:10,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:10,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:10,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:10:10,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:10,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694645683] [2024-11-08 16:10:10,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694645683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:10,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:10,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:10:10,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660618373] [2024-11-08 16:10:10,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:10,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:10:10,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:10,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:10:10,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:10:10,379 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 77 [2024-11-08 16:10:10,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 81 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 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 16:10:10,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:10,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 77 [2024-11-08 16:10:10,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:11,965 INFO L124 PetriNetUnfolderBase]: 8229/13557 cut-off events. [2024-11-08 16:10:11,965 INFO L125 PetriNetUnfolderBase]: For 8372/8947 co-relation queries the response was YES. [2024-11-08 16:10:12,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34607 conditions, 13557 events. 8229/13557 cut-off events. For 8372/8947 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 103306 event pairs, 2843 based on Foata normal form. 404/10992 useless extension candidates. Maximal degree in co-relation 34561. Up to 8901 conditions per place. [2024-11-08 16:10:12,072 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 98 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2024-11-08 16:10:12,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 128 transitions, 695 flow [2024-11-08 16:10:12,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:10:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:10:12,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-08 16:10:12,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.672077922077922 [2024-11-08 16:10:12,074 INFO L175 Difference]: Start difference. First operand has 105 places, 81 transitions, 343 flow. Second operand 4 states and 207 transitions. [2024-11-08 16:10:12,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 128 transitions, 695 flow [2024-11-08 16:10:12,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 128 transitions, 651 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-11-08 16:10:12,164 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 336 flow [2024-11-08 16:10:12,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2024-11-08 16:10:12,165 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2024-11-08 16:10:12,165 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 336 flow [2024-11-08 16:10:12,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 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 16:10:12,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:12,165 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:12,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 16:10:12,165 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:10:12,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:12,166 INFO L85 PathProgramCache]: Analyzing trace with hash -404542710, now seen corresponding path program 1 times [2024-11-08 16:10:12,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:12,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697648199] [2024-11-08 16:10:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:12,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:12,403 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 16:10:12,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:12,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697648199] [2024-11-08 16:10:12,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697648199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:12,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645594698] [2024-11-08 16:10:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:12,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:12,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:12,407 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:12,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:10:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:12,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:10:12,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:12,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 16:10:12,679 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 16:10:12,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:10:12,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-08 16:10:12,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-08 16:10:12,797 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 16:10:12,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645594698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:10:12,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:10:12,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-08 16:10:12,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935013759] [2024-11-08 16:10:12,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:10:12,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:10:12,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:12,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:10:12,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:10:12,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-11-08 16:10:12,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 336 flow. Second operand has 11 states, 11 states have (on average 34.81818181818182) internal successors, (383), 11 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 16:10:12,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:12,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-11-08 16:10:12,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:14,517 INFO L124 PetriNetUnfolderBase]: 8161/14136 cut-off events. [2024-11-08 16:10:14,517 INFO L125 PetriNetUnfolderBase]: For 10459/10459 co-relation queries the response was YES. [2024-11-08 16:10:14,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35157 conditions, 14136 events. 8161/14136 cut-off events. For 10459/10459 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 118077 event pairs, 2108 based on Foata normal form. 0/9954 useless extension candidates. Maximal degree in co-relation 35117. Up to 4112 conditions per place. [2024-11-08 16:10:14,607 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 90 selfloop transitions, 15 changer transitions 0/135 dead transitions. [2024-11-08 16:10:14,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 135 transitions, 784 flow [2024-11-08 16:10:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:10:14,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 16:10:14,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 349 transitions. [2024-11-08 16:10:14,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5665584415584416 [2024-11-08 16:10:14,609 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 336 flow. Second operand 8 states and 349 transitions. [2024-11-08 16:10:14,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 135 transitions, 784 flow [2024-11-08 16:10:14,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 135 transitions, 766 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:10:14,614 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 405 flow [2024-11-08 16:10:14,614 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=405, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2024-11-08 16:10:14,615 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2024-11-08 16:10:14,616 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 405 flow [2024-11-08 16:10:14,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.81818181818182) internal successors, (383), 11 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 16:10:14,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:14,616 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:14,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 16:10:14,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 16:10:14,817 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:10:14,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:14,817 INFO L85 PathProgramCache]: Analyzing trace with hash -404542709, now seen corresponding path program 1 times [2024-11-08 16:10:14,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:14,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111085614] [2024-11-08 16:10:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:14,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:15,108 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 16:10:15,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:15,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111085614] [2024-11-08 16:10:15,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111085614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:15,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497486801] [2024-11-08 16:10:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:15,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:15,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:15,112 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:15,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:10:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:15,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 16:10:15,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:15,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 16:10:15,311 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 16:10:15,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:10:15,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-08 16:10:15,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-08 16:10:15,407 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 16:10:15,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497486801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:10:15,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:10:15,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-08 16:10:15,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829510998] [2024-11-08 16:10:15,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:10:15,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 16:10:15,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:15,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 16:10:15,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:10:15,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-11-08 16:10:15,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 405 flow. Second operand has 13 states, 13 states have (on average 35.0) internal successors, (455), 13 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:15,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:15,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-11-08 16:10:15,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:17,517 INFO L124 PetriNetUnfolderBase]: 7409/13074 cut-off events. [2024-11-08 16:10:17,517 INFO L125 PetriNetUnfolderBase]: For 12133/12133 co-relation queries the response was YES. [2024-11-08 16:10:17,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36008 conditions, 13074 events. 7409/13074 cut-off events. For 12133/12133 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 109892 event pairs, 2060 based on Foata normal form. 310/9498 useless extension candidates. Maximal degree in co-relation 35963. Up to 3906 conditions per place. [2024-11-08 16:10:17,630 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 89 selfloop transitions, 15 changer transitions 0/134 dead transitions. [2024-11-08 16:10:17,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 134 transitions, 817 flow [2024-11-08 16:10:17,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:10:17,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 16:10:17,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 348 transitions. [2024-11-08 16:10:17,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.564935064935065 [2024-11-08 16:10:17,632 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 405 flow. Second operand 8 states and 348 transitions. [2024-11-08 16:10:17,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 134 transitions, 817 flow [2024-11-08 16:10:17,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 134 transitions, 807 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 16:10:17,647 INFO L231 Difference]: Finished difference. Result has 103 places, 87 transitions, 421 flow [2024-11-08 16:10:17,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=421, PETRI_PLACES=103, PETRI_TRANSITIONS=87} [2024-11-08 16:10:17,648 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2024-11-08 16:10:17,648 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 87 transitions, 421 flow [2024-11-08 16:10:17,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.0) internal successors, (455), 13 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:17,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:17,649 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:17,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 16:10:17,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 16:10:17,850 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:10:17,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:17,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1568969702, now seen corresponding path program 1 times [2024-11-08 16:10:17,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:17,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134962316] [2024-11-08 16:10:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:17,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:18,294 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 16:10:18,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:18,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134962316] [2024-11-08 16:10:18,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134962316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:18,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503248375] [2024-11-08 16:10:18,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:18,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:18,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:18,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:18,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:10:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:18,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 16:10:18,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:18,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 16:10:18,925 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 16:10:18,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:10:19,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-08 16:10:19,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-08 16:10:19,432 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 16:10:19,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503248375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:10:19,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:10:19,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-08 16:10:19,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44555204] [2024-11-08 16:10:19,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:10:19,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 16:10:19,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:19,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 16:10:19,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2024-11-08 16:10:20,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-11-08 16:10:20,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 87 transitions, 421 flow. Second operand has 23 states, 23 states have (on average 25.956521739130434) internal successors, (597), 23 states have internal predecessors, (597), 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 16:10:20,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:20,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-11-08 16:10:20,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:30,595 INFO L124 PetriNetUnfolderBase]: 38192/57824 cut-off events. [2024-11-08 16:10:30,595 INFO L125 PetriNetUnfolderBase]: For 79004/79004 co-relation queries the response was YES. [2024-11-08 16:10:30,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184796 conditions, 57824 events. 38192/57824 cut-off events. For 79004/79004 co-relation queries the response was YES. Maximal size of possible extension queue 3034. Compared 490279 event pairs, 12749 based on Foata normal form. 0/43408 useless extension candidates. Maximal degree in co-relation 184749. Up to 10405 conditions per place. [2024-11-08 16:10:31,161 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 376 selfloop transitions, 50 changer transitions 3/451 dead transitions. [2024-11-08 16:10:31,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 451 transitions, 3317 flow [2024-11-08 16:10:31,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 16:10:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-08 16:10:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 800 transitions. [2024-11-08 16:10:31,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5194805194805194 [2024-11-08 16:10:31,164 INFO L175 Difference]: Start difference. First operand has 103 places, 87 transitions, 421 flow. Second operand 20 states and 800 transitions. [2024-11-08 16:10:31,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 451 transitions, 3317 flow [2024-11-08 16:10:31,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 451 transitions, 3269 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 16:10:31,208 INFO L231 Difference]: Finished difference. Result has 123 places, 129 transitions, 721 flow [2024-11-08 16:10:31,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=721, PETRI_PLACES=123, PETRI_TRANSITIONS=129} [2024-11-08 16:10:31,209 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 49 predicate places. [2024-11-08 16:10:31,209 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 129 transitions, 721 flow [2024-11-08 16:10:31,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 25.956521739130434) internal successors, (597), 23 states have internal predecessors, (597), 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 16:10:31,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:31,210 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:31,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 16:10:31,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 16:10:31,411 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:10:31,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:31,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1568969703, now seen corresponding path program 1 times [2024-11-08 16:10:31,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:31,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698405469] [2024-11-08 16:10:31,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:31,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:31,800 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 16:10:31,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:31,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698405469] [2024-11-08 16:10:31,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698405469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:31,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533962154] [2024-11-08 16:10:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:31,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:31,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:31,803 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:31,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:10:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:31,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 16:10:31,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:31,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 16:10:32,302 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 16:10:32,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:10:32,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-08 16:10:32,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-08 16:10:32,809 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 16:10:32,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533962154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:10:32,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:10:32,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-08 16:10:32,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069737303] [2024-11-08 16:10:32,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:10:32,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 16:10:32,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:32,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 16:10:32,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2024-11-08 16:10:33,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-11-08 16:10:33,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 129 transitions, 721 flow. Second operand has 23 states, 23 states have (on average 25.956521739130434) internal successors, (597), 23 states have internal predecessors, (597), 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 16:10:33,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:33,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-11-08 16:10:33,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:45,363 INFO L124 PetriNetUnfolderBase]: 37166/56456 cut-off events. [2024-11-08 16:10:45,363 INFO L125 PetriNetUnfolderBase]: For 78400/78400 co-relation queries the response was YES. [2024-11-08 16:10:45,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199389 conditions, 56456 events. 37166/56456 cut-off events. For 78400/78400 co-relation queries the response was YES. Maximal size of possible extension queue 2957. Compared 478242 event pairs, 12749 based on Foata normal form. 536/46584 useless extension candidates. Maximal degree in co-relation 199334. Up to 10285 conditions per place. [2024-11-08 16:10:45,853 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 374 selfloop transitions, 50 changer transitions 3/449 dead transitions. [2024-11-08 16:10:45,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 449 transitions, 3460 flow [2024-11-08 16:10:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 16:10:45,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-08 16:10:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 798 transitions. [2024-11-08 16:10:45,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-11-08 16:10:45,857 INFO L175 Difference]: Start difference. First operand has 123 places, 129 transitions, 721 flow. Second operand 20 states and 798 transitions. [2024-11-08 16:10:45,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 449 transitions, 3460 flow [2024-11-08 16:10:46,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 449 transitions, 3439 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-08 16:10:46,470 INFO L231 Difference]: Finished difference. Result has 137 places, 129 transitions, 804 flow [2024-11-08 16:10:46,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=804, PETRI_PLACES=137, PETRI_TRANSITIONS=129} [2024-11-08 16:10:46,471 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 63 predicate places. [2024-11-08 16:10:46,471 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 129 transitions, 804 flow [2024-11-08 16:10:46,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 25.956521739130434) internal successors, (597), 23 states have internal predecessors, (597), 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 16:10:46,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:46,472 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:46,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 16:10:46,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12635284-7433-4e90-8e66-7a6c444cd855/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 16:10:46,672 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:10:46,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:46,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2076510960, now seen corresponding path program 1 times [2024-11-08 16:10:46,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:46,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291454719] [2024-11-08 16:10:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:46,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:10:46,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:46,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291454719] [2024-11-08 16:10:46,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291454719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:46,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:46,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:10:46,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659150905] [2024-11-08 16:10:46,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:46,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:10:46,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:46,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:10:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:10:46,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 77 [2024-11-08 16:10:46,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 129 transitions, 804 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 16:10:46,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:46,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 77 [2024-11-08 16:10:46,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:55,920 INFO L124 PetriNetUnfolderBase]: 34525/57359 cut-off events. [2024-11-08 16:10:55,920 INFO L125 PetriNetUnfolderBase]: For 89828/90818 co-relation queries the response was YES. [2024-11-08 16:10:56,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195588 conditions, 57359 events. 34525/57359 cut-off events. For 89828/90818 co-relation queries the response was YES. Maximal size of possible extension queue 3119. Compared 536826 event pairs, 17403 based on Foata normal form. 1602/47203 useless extension candidates. Maximal degree in co-relation 195535. Up to 32725 conditions per place. [2024-11-08 16:10:56,424 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 183 selfloop transitions, 4 changer transitions 0/228 dead transitions. [2024-11-08 16:10:56,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 228 transitions, 1817 flow [2024-11-08 16:10:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:10:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:10:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-08 16:10:56,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.672077922077922 [2024-11-08 16:10:56,425 INFO L175 Difference]: Start difference. First operand has 137 places, 129 transitions, 804 flow. Second operand 4 states and 207 transitions. [2024-11-08 16:10:56,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 228 transitions, 1817 flow [2024-11-08 16:10:58,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 228 transitions, 1725 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-11-08 16:10:58,036 INFO L231 Difference]: Finished difference. Result has 129 places, 130 transitions, 769 flow [2024-11-08 16:10:58,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=769, PETRI_PLACES=129, PETRI_TRANSITIONS=130} [2024-11-08 16:10:58,037 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 55 predicate places. [2024-11-08 16:10:58,037 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 130 transitions, 769 flow [2024-11-08 16:10:58,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 16:10:58,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:58,037 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:58,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 16:10:58,038 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-08 16:10:58,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:58,038 INFO L85 PathProgramCache]: Analyzing trace with hash 246394636, now seen corresponding path program 1 times [2024-11-08 16:10:58,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:58,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016392221] [2024-11-08 16:10:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:58,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:10:58,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:58,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016392221] [2024-11-08 16:10:58,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016392221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:58,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:58,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:10:58,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020690292] [2024-11-08 16:10:58,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:58,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:10:58,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:58,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:10:58,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:10:58,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 77 [2024-11-08 16:10:58,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 130 transitions, 769 flow. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 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 16:10:58,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:58,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 77 [2024-11-08 16:10:58,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand