./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1 --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 cd36b7f18dbd530fce94e0943ff58c16da276fcc41b96fdafde87c3c69036175 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:51:24,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:51:24,691 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 12:51:24,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:51:24,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:51:24,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:51:24,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:51:24,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:51:24,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:51:24,718 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:51:24,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:51:24,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:51:24,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:51:24,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:51:24,719 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:51:24,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:51:24,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:51:24,719 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:51:24,719 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:51:24,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:51:24,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:51:24,720 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:51:24,720 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:51:24,720 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:51:24,720 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 12:51:24,720 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:51:24,720 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:51:24,720 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:51:24,720 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:51:24,720 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:51:24,720 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:51:24,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:51:24,720 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:51:24,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:51:24,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:51:24,721 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:51:24,721 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:51:24,721 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:51:24,721 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:51:24,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:51:24,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:51:24,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:51:24,721 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:51:24,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:51:24,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:51:24,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:51:24,722 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:51:24,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:51:24,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:51:24,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:51:24,722 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1 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 -> cd36b7f18dbd530fce94e0943ff58c16da276fcc41b96fdafde87c3c69036175 [2024-12-02 12:51:24,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:51:24,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:51:24,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:51:24,968 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:51:24,968 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:51:24,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-12-02 12:51:27,633 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/data/f82de0892/2b9da61f033e4f6a9adbf1399a03566a/FLAGf65789827 [2024-12-02 12:51:27,863 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:51:27,863 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-12-02 12:51:27,871 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/data/f82de0892/2b9da61f033e4f6a9adbf1399a03566a/FLAGf65789827 [2024-12-02 12:51:28,218 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/data/f82de0892/2b9da61f033e4f6a9adbf1399a03566a [2024-12-02 12:51:28,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:51:28,221 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:51:28,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:51:28,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:51:28,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:51:28,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e80803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28, skipping insertion in model container [2024-12-02 12:51:28,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,239 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:51:28,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:51:28,404 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:51:28,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:51:28,440 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:51:28,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28 WrapperNode [2024-12-02 12:51:28,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:51:28,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:51:28,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:51:28,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:51:28,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,454 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,476 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 232 [2024-12-02 12:51:28,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:51:28,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:51:28,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:51:28,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:51:28,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,502 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]. [2024-12-02 12:51:28,502 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,509 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,515 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,516 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:51:28,519 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:51:28,519 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:51:28,519 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:51:28,520 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28" (1/1) ... [2024-12-02 12:51:28,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:51:28,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:28,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:51:28,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:51:28,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:51:28,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 12:51:28,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 12:51:28,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 12:51:28,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 12:51:28,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 12:51:28,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 12:51:28,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:51:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 12:51:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 12:51:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 12:51:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 12:51:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:51:28,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:51:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 12:51:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 12:51:28,574 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 12:51:28,674 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:51:28,675 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:51:29,044 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 12:51:29,044 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:51:29,271 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:51:29,271 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 12:51:29,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:51:29 BoogieIcfgContainer [2024-12-02 12:51:29,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:51:29,274 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:51:29,274 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:51:29,278 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:51:29,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:51:28" (1/3) ... [2024-12-02 12:51:29,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abdf3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:51:29, skipping insertion in model container [2024-12-02 12:51:29,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:28" (2/3) ... [2024-12-02 12:51:29,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abdf3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:51:29, skipping insertion in model container [2024-12-02 12:51:29,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:51:29" (3/3) ... [2024-12-02 12:51:29,281 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2024-12-02 12:51:29,297 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:51:29,298 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-array-sum-alt.wvr.c that has 4 procedures, 90 locations, 1 initial locations, 4 loop locations, and 26 error locations. [2024-12-02 12:51:29,299 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 12:51:29,376 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 12:51:29,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 219 flow [2024-12-02 12:51:29,454 INFO L124 PetriNetUnfolderBase]: 10/96 cut-off events. [2024-12-02 12:51:29,456 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-12-02 12:51:29,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 10/96 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 357 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2024-12-02 12:51:29,461 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 99 transitions, 219 flow [2024-12-02 12:51:29,465 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 94 transitions, 203 flow [2024-12-02 12:51:29,473 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:51:29,484 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;@639385aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:51:29,484 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-12-02 12:51:29,487 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 12:51:29,487 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-12-02 12:51:29,487 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:51:29,488 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:51:29,488 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 12:51:29,488 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:51:29,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:29,493 INFO L85 PathProgramCache]: Analyzing trace with hash 723805, now seen corresponding path program 1 times [2024-12-02 12:51:29,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:29,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660896509] [2024-12-02 12:51:29,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:29,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:29,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:29,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660896509] [2024-12-02 12:51:29,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660896509] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:29,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:51:29,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:51:29,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930007026] [2024-12-02 12:51:29,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:29,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:29,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:29,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:29,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:51:29,730 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 99 [2024-12-02 12:51:29,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-12-02 12:51:29,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:51:29,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 99 [2024-12-02 12:51:29,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:51:31,026 INFO L124 PetriNetUnfolderBase]: 5172/10297 cut-off events. [2024-12-02 12:51:31,026 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2024-12-02 12:51:31,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17434 conditions, 10297 events. 5172/10297 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 88967 event pairs, 3548 based on Foata normal form. 1/8369 useless extension candidates. Maximal degree in co-relation 16640. Up to 6879 conditions per place. [2024-12-02 12:51:31,105 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 38 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2024-12-02 12:51:31,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 93 transitions, 285 flow [2024-12-02 12:51:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:51:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:51:31,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2024-12-02 12:51:31,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6540404040404041 [2024-12-02 12:51:31,120 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 203 flow. Second operand 4 states and 259 transitions. [2024-12-02 12:51:31,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 93 transitions, 285 flow [2024-12-02 12:51:31,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 276 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-12-02 12:51:31,137 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 200 flow [2024-12-02 12:51:31,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2024-12-02 12:51:31,142 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, -3 predicate places. [2024-12-02 12:51:31,142 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 200 flow [2024-12-02 12:51:31,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-12-02 12:51:31,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:51:31,143 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-12-02 12:51:31,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:51:31,143 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:51:31,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:31,144 INFO L85 PathProgramCache]: Analyzing trace with hash 22438731, now seen corresponding path program 1 times [2024-12-02 12:51:31,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:31,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113669337] [2024-12-02 12:51:31,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:31,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:31,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:31,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113669337] [2024-12-02 12:51:31,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113669337] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:31,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:51:31,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:51:31,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121410306] [2024-12-02 12:51:31,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:31,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:31,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:31,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:31,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:51:31,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 99 [2024-12-02 12:51:31,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-12-02 12:51:31,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:51:31,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 99 [2024-12-02 12:51:31,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:51:32,207 INFO L124 PetriNetUnfolderBase]: 5173/10301 cut-off events. [2024-12-02 12:51:32,207 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-12-02 12:51:32,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17348 conditions, 10301 events. 5173/10301 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 88913 event pairs, 3548 based on Foata normal form. 1/8373 useless extension candidates. Maximal degree in co-relation 17320. Up to 6884 conditions per place. [2024-12-02 12:51:32,293 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 41 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2024-12-02 12:51:32,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 96 transitions, 302 flow [2024-12-02 12:51:32,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:51:32,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:51:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-12-02 12:51:32,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6616161616161617 [2024-12-02 12:51:32,295 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 200 flow. Second operand 4 states and 262 transitions. [2024-12-02 12:51:32,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 96 transitions, 302 flow [2024-12-02 12:51:32,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 288 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:51:32,299 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 219 flow [2024-12-02 12:51:32,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2024-12-02 12:51:32,300 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2024-12-02 12:51:32,300 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 219 flow [2024-12-02 12:51:32,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-12-02 12:51:32,301 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:51:32,301 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-12-02 12:51:32,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:51:32,301 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:51:32,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:32,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1541941863, now seen corresponding path program 1 times [2024-12-02 12:51:32,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:32,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431516309] [2024-12-02 12:51:32,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:32,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:32,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:32,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431516309] [2024-12-02 12:51:32,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431516309] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:32,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190291917] [2024-12-02 12:51:32,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:32,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:32,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:32,398 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:32,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:51:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:32,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:51:32,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:32,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:51:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:32,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190291917] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:51:32,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:51:32,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-12-02 12:51:32,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129468228] [2024-12-02 12:51:32,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:51:32,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:51:32,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:32,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:51:32,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:51:32,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 99 [2024-12-02 12:51:32,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 219 flow. Second operand has 10 states, 10 states have (on average 55.0) internal successors, (550), 10 states have internal predecessors, (550), 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) [2024-12-02 12:51:32,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:51:32,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 99 [2024-12-02 12:51:32,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:51:33,297 INFO L124 PetriNetUnfolderBase]: 5176/10313 cut-off events. [2024-12-02 12:51:33,297 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-12-02 12:51:33,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17384 conditions, 10313 events. 5176/10313 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 89153 event pairs, 3548 based on Foata normal form. 0/8381 useless extension candidates. Maximal degree in co-relation 17327. Up to 6887 conditions per place. [2024-12-02 12:51:33,352 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 41 selfloop transitions, 13 changer transitions 0/105 dead transitions. [2024-12-02 12:51:33,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 105 transitions, 363 flow [2024-12-02 12:51:33,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:51:33,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:51:33,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 597 transitions. [2024-12-02 12:51:33,355 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.603030303030303 [2024-12-02 12:51:33,355 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 219 flow. Second operand 10 states and 597 transitions. [2024-12-02 12:51:33,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 105 transitions, 363 flow [2024-12-02 12:51:33,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:51:33,358 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 296 flow [2024-12-02 12:51:33,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=296, PETRI_PLACES=104, PETRI_TRANSITIONS=105} [2024-12-02 12:51:33,359 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 10 predicate places. [2024-12-02 12:51:33,359 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 296 flow [2024-12-02 12:51:33,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 55.0) internal successors, (550), 10 states have internal predecessors, (550), 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) [2024-12-02 12:51:33,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:51:33,359 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:33,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:51:33,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:33,560 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:51:33,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:33,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1420817692, now seen corresponding path program 1 times [2024-12-02 12:51:33,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:33,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626545710] [2024-12-02 12:51:33,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:33,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:33,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:33,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626545710] [2024-12-02 12:51:33,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626545710] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:33,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:51:33,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:51:33,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987928756] [2024-12-02 12:51:33,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:33,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:33,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:33,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:33,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:51:33,653 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2024-12-02 12:51:33,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 105 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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) [2024-12-02 12:51:33,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:51:33,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2024-12-02 12:51:33,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:51:34,832 INFO L124 PetriNetUnfolderBase]: 9900/17797 cut-off events. [2024-12-02 12:51:34,832 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-12-02 12:51:34,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31367 conditions, 17797 events. 9900/17797 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 152642 event pairs, 3200 based on Foata normal form. 444/15061 useless extension candidates. Maximal degree in co-relation 31331. Up to 6301 conditions per place. [2024-12-02 12:51:34,917 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 107 selfloop transitions, 5 changer transitions 0/158 dead transitions. [2024-12-02 12:51:34,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 158 transitions, 632 flow [2024-12-02 12:51:34,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:51:34,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:51:34,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2024-12-02 12:51:34,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7651515151515151 [2024-12-02 12:51:34,919 INFO L175 Difference]: Start difference. First operand has 104 places, 105 transitions, 296 flow. Second operand 4 states and 303 transitions. [2024-12-02 12:51:34,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 158 transitions, 632 flow [2024-12-02 12:51:34,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 158 transitions, 602 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-12-02 12:51:34,923 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 300 flow [2024-12-02 12:51:34,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2024-12-02 12:51:34,924 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 12 predicate places. [2024-12-02 12:51:34,924 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 300 flow [2024-12-02 12:51:34,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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) [2024-12-02 12:51:34,924 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:51:34,924 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:34,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:51:34,925 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:51:34,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:34,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1095674702, now seen corresponding path program 1 times [2024-12-02 12:51:34,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:34,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537277818] [2024-12-02 12:51:34,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:34,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:35,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:35,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537277818] [2024-12-02 12:51:35,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537277818] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:35,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:51:35,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:51:35,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811103846] [2024-12-02 12:51:35,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:35,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:51:35,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:35,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:51:35,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:51:35,024 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 99 [2024-12-02 12:51:35,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 300 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2024-12-02 12:51:35,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:51:35,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 99 [2024-12-02 12:51:35,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:51:36,039 INFO L124 PetriNetUnfolderBase]: 8135/16396 cut-off events. [2024-12-02 12:51:36,039 INFO L125 PetriNetUnfolderBase]: For 2711/3053 co-relation queries the response was YES. [2024-12-02 12:51:36,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29550 conditions, 16396 events. 8135/16396 cut-off events. For 2711/3053 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 152167 event pairs, 5292 based on Foata normal form. 395/14089 useless extension candidates. Maximal degree in co-relation 29516. Up to 8594 conditions per place. [2024-12-02 12:51:36,093 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 105 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2024-12-02 12:51:36,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 162 transitions, 639 flow [2024-12-02 12:51:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:51:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:51:36,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2024-12-02 12:51:36,095 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7676767676767676 [2024-12-02 12:51:36,095 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 300 flow. Second operand 5 states and 380 transitions. [2024-12-02 12:51:36,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 162 transitions, 639 flow [2024-12-02 12:51:36,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 162 transitions, 639 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 12:51:36,123 INFO L231 Difference]: Finished difference. Result has 112 places, 109 transitions, 325 flow [2024-12-02 12:51:36,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=112, PETRI_TRANSITIONS=109} [2024-12-02 12:51:36,124 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 18 predicate places. [2024-12-02 12:51:36,124 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 109 transitions, 325 flow [2024-12-02 12:51:36,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2024-12-02 12:51:36,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:51:36,125 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:36,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:51:36,125 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:51:36,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:36,125 INFO L85 PathProgramCache]: Analyzing trace with hash 242086880, now seen corresponding path program 1 times [2024-12-02 12:51:36,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:36,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665558607] [2024-12-02 12:51:36,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:36,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:36,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:36,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665558607] [2024-12-02 12:51:36,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665558607] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:36,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:51:36,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:51:36,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340133133] [2024-12-02 12:51:36,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:36,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:36,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:36,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:36,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:51:36,203 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2024-12-02 12:51:36,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 109 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2024-12-02 12:51:36,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:51:36,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2024-12-02 12:51:36,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:51:38,071 INFO L124 PetriNetUnfolderBase]: 14662/27415 cut-off events. [2024-12-02 12:51:38,071 INFO L125 PetriNetUnfolderBase]: For 8154/8703 co-relation queries the response was YES. [2024-12-02 12:51:38,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53514 conditions, 27415 events. 14662/27415 cut-off events. For 8154/8703 co-relation queries the response was YES. Maximal size of possible extension queue 1342. Compared 257263 event pairs, 5152 based on Foata normal form. 948/23741 useless extension candidates. Maximal degree in co-relation 53477. Up to 9929 conditions per place. [2024-12-02 12:51:38,232 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 115 selfloop transitions, 5 changer transitions 0/166 dead transitions. [2024-12-02 12:51:38,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 166 transitions, 749 flow [2024-12-02 12:51:38,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:51:38,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:51:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2024-12-02 12:51:38,234 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2024-12-02 12:51:38,234 INFO L175 Difference]: Start difference. First operand has 112 places, 109 transitions, 325 flow. Second operand 4 states and 299 transitions. [2024-12-02 12:51:38,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 166 transitions, 749 flow [2024-12-02 12:51:38,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 166 transitions, 744 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:51:38,243 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 354 flow [2024-12-02 12:51:38,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=354, PETRI_PLACES=115, PETRI_TRANSITIONS=111} [2024-12-02 12:51:38,243 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 21 predicate places. [2024-12-02 12:51:38,243 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 354 flow [2024-12-02 12:51:38,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2024-12-02 12:51:38,244 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:51:38,244 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:38,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:51:38,244 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:51:38,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:38,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1085240497, now seen corresponding path program 1 times [2024-12-02 12:51:38,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:38,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222610939] [2024-12-02 12:51:38,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:38,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:38,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:38,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222610939] [2024-12-02 12:51:38,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222610939] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:38,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:51:38,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:51:38,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460934201] [2024-12-02 12:51:38,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:38,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:51:38,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:38,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:51:38,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:51:38,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 99 [2024-12-02 12:51:38,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 354 flow. Second operand has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 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) [2024-12-02 12:51:38,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:51:38,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 99 [2024-12-02 12:51:38,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:51:39,410 INFO L124 PetriNetUnfolderBase]: 8097/17109 cut-off events. [2024-12-02 12:51:39,410 INFO L125 PetriNetUnfolderBase]: For 7030/7811 co-relation queries the response was YES. [2024-12-02 12:51:39,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33593 conditions, 17109 events. 8097/17109 cut-off events. For 7030/7811 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 167034 event pairs, 5664 based on Foata normal form. 471/14939 useless extension candidates. Maximal degree in co-relation 33554. Up to 10271 conditions per place. [2024-12-02 12:51:39,483 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 88 selfloop transitions, 5 changer transitions 2/147 dead transitions. [2024-12-02 12:51:39,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 147 transitions, 633 flow [2024-12-02 12:51:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:51:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:51:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 363 transitions. [2024-12-02 12:51:39,484 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-12-02 12:51:39,484 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 354 flow. Second operand 5 states and 363 transitions. [2024-12-02 12:51:39,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 147 transitions, 633 flow [2024-12-02 12:51:39,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 147 transitions, 633 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 12:51:39,496 INFO L231 Difference]: Finished difference. Result has 121 places, 113 transitions, 379 flow [2024-12-02 12:51:39,496 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=121, PETRI_TRANSITIONS=113} [2024-12-02 12:51:39,496 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 27 predicate places. [2024-12-02 12:51:39,496 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 113 transitions, 379 flow [2024-12-02 12:51:39,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 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) [2024-12-02 12:51:39,496 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:51:39,496 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:39,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:51:39,497 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:51:39,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:39,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1672802304, now seen corresponding path program 1 times [2024-12-02 12:51:39,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:39,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049344244] [2024-12-02 12:51:39,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:39,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:39,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:39,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:39,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049344244] [2024-12-02 12:51:39,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049344244] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:39,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465824212] [2024-12-02 12:51:39,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:39,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:39,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:39,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:39,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:51:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:39,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 12:51:39,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:39,851 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 [2024-12-02 12:51:39,905 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 17 treesize of output 9 [2024-12-02 12:51:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:39,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:51:39,988 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 [2024-12-02 12:51:39,994 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 [2024-12-02 12:51:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:40,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465824212] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:51:40,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:51:40,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 12:51:40,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108603547] [2024-12-02 12:51:40,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:51:40,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:51:40,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:40,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:51:40,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:51:40,082 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 99 [2024-12-02 12:51:40,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 113 transitions, 379 flow. Second operand has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 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) [2024-12-02 12:51:40,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:51:40,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 99 [2024-12-02 12:51:40,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:51:43,175 INFO L124 PetriNetUnfolderBase]: 19198/37811 cut-off events. [2024-12-02 12:51:43,175 INFO L125 PetriNetUnfolderBase]: For 17716/18841 co-relation queries the response was YES. [2024-12-02 12:51:43,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79572 conditions, 37811 events. 19198/37811 cut-off events. For 17716/18841 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 374354 event pairs, 5386 based on Foata normal form. 655/33954 useless extension candidates. Maximal degree in co-relation 79530. Up to 8842 conditions per place. [2024-12-02 12:51:43,443 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 183 selfloop transitions, 19 changer transitions 1/253 dead transitions. [2024-12-02 12:51:43,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 253 transitions, 1205 flow [2024-12-02 12:51:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:51:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:51:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 713 transitions. [2024-12-02 12:51:43,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7202020202020202 [2024-12-02 12:51:43,445 INFO L175 Difference]: Start difference. First operand has 121 places, 113 transitions, 379 flow. Second operand 10 states and 713 transitions. [2024-12-02 12:51:43,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 253 transitions, 1205 flow [2024-12-02 12:51:43,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 253 transitions, 1200 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:51:43,560 INFO L231 Difference]: Finished difference. Result has 131 places, 122 transitions, 487 flow [2024-12-02 12:51:43,560 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=487, PETRI_PLACES=131, PETRI_TRANSITIONS=122} [2024-12-02 12:51:43,561 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 37 predicate places. [2024-12-02 12:51:43,561 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 122 transitions, 487 flow [2024-12-02 12:51:43,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 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) [2024-12-02 12:51:43,561 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:51:43,561 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:43,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:51:43,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-12-02 12:51:43,762 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:51:43,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:43,762 INFO L85 PathProgramCache]: Analyzing trace with hash -377306113, now seen corresponding path program 1 times [2024-12-02 12:51:43,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:43,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186456281] [2024-12-02 12:51:43,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:43,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:43,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:43,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186456281] [2024-12-02 12:51:43,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186456281] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:43,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:51:43,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:51:43,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511398008] [2024-12-02 12:51:43,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:43,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:43,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:43,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:43,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:51:43,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2024-12-02 12:51:43,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 122 transitions, 487 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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) [2024-12-02 12:51:43,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:51:43,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2024-12-02 12:51:43,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:51:47,726 INFO L124 PetriNetUnfolderBase]: 28450/53375 cut-off events. [2024-12-02 12:51:47,727 INFO L125 PetriNetUnfolderBase]: For 54606/57785 co-relation queries the response was YES. [2024-12-02 12:51:47,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125480 conditions, 53375 events. 28450/53375 cut-off events. For 54606/57785 co-relation queries the response was YES. Maximal size of possible extension queue 1815. Compared 532071 event pairs, 11309 based on Foata normal form. 2368/49112 useless extension candidates. Maximal degree in co-relation 125434. Up to 20717 conditions per place. [2024-12-02 12:51:48,050 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 149 selfloop transitions, 5 changer transitions 0/201 dead transitions. [2024-12-02 12:51:48,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 201 transitions, 1217 flow [2024-12-02 12:51:48,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:51:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:51:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2024-12-02 12:51:48,051 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-12-02 12:51:48,051 INFO L175 Difference]: Start difference. First operand has 131 places, 122 transitions, 487 flow. Second operand 4 states and 297 transitions. [2024-12-02 12:51:48,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 201 transitions, 1217 flow [2024-12-02 12:51:48,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 201 transitions, 1179 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-12-02 12:51:48,226 INFO L231 Difference]: Finished difference. Result has 132 places, 124 transitions, 503 flow [2024-12-02 12:51:48,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=503, PETRI_PLACES=132, PETRI_TRANSITIONS=124} [2024-12-02 12:51:48,227 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 38 predicate places. [2024-12-02 12:51:48,227 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 124 transitions, 503 flow [2024-12-02 12:51:48,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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) [2024-12-02 12:51:48,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:51:48,227 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:48,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:51:48,228 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:51:48,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:48,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1188413227, now seen corresponding path program 1 times [2024-12-02 12:51:48,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:48,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026076480] [2024-12-02 12:51:48,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:48,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:48,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:48,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026076480] [2024-12-02 12:51:48,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026076480] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:48,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:51:48,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:51:48,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751591] [2024-12-02 12:51:48,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:48,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:51:48,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:48,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:51:48,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:51:48,289 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 99 [2024-12-02 12:51:48,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 124 transitions, 503 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 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) [2024-12-02 12:51:48,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:51:48,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 99 [2024-12-02 12:51:48,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:51:51,710 INFO L124 PetriNetUnfolderBase]: 19859/42505 cut-off events. [2024-12-02 12:51:51,711 INFO L125 PetriNetUnfolderBase]: For 40474/43171 co-relation queries the response was YES. [2024-12-02 12:51:51,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98444 conditions, 42505 events. 19859/42505 cut-off events. For 40474/43171 co-relation queries the response was YES. Maximal size of possible extension queue 1569. Compared 465921 event pairs, 14560 based on Foata normal form. 1139/39031 useless extension candidates. Maximal degree in co-relation 98397. Up to 26029 conditions per place. [2024-12-02 12:51:51,998 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 64 selfloop transitions, 2 changer transitions 22/141 dead transitions. [2024-12-02 12:51:51,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 141 transitions, 735 flow [2024-12-02 12:51:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:51:52,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:51:52,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 346 transitions. [2024-12-02 12:51:52,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6989898989898989 [2024-12-02 12:51:52,170 INFO L175 Difference]: Start difference. First operand has 132 places, 124 transitions, 503 flow. Second operand 5 states and 346 transitions. [2024-12-02 12:51:52,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 141 transitions, 735 flow [2024-12-02 12:51:52,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 141 transitions, 735 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 12:51:52,352 INFO L231 Difference]: Finished difference. Result has 138 places, 119 transitions, 484 flow [2024-12-02 12:51:52,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=138, PETRI_TRANSITIONS=119} [2024-12-02 12:51:52,353 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 44 predicate places. [2024-12-02 12:51:52,353 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 119 transitions, 484 flow [2024-12-02 12:51:52,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 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) [2024-12-02 12:51:52,353 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:51:52,353 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:52,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 12:51:52,353 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:51:52,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:52,354 INFO L85 PathProgramCache]: Analyzing trace with hash 317232890, now seen corresponding path program 1 times [2024-12-02 12:51:52,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:52,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948641446] [2024-12-02 12:51:52,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:52,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:52,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:52,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948641446] [2024-12-02 12:51:52,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948641446] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:52,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19423097] [2024-12-02 12:51:52,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:52,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:52,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:52,548 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:52,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:51:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:52,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 12:51:52,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:52,620 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 [2024-12-02 12:51:52,664 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 15 treesize of output 7 [2024-12-02 12:51:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:52,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:51:52,738 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 [2024-12-02 12:51:52,743 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 [2024-12-02 12:51:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:52,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19423097] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:51:52,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:51:52,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 12:51:52,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59855454] [2024-12-02 12:51:52,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:51:52,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:51:52,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:52,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:51:52,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:51:52,814 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 99 [2024-12-02 12:51:52,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 119 transitions, 484 flow. Second operand has 13 states, 13 states have (on average 52.53846153846154) internal successors, (683), 13 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:51:52,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:51:52,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 99 [2024-12-02 12:51:52,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:51:56,893 INFO L124 PetriNetUnfolderBase]: 27381/49887 cut-off events. [2024-12-02 12:51:56,894 INFO L125 PetriNetUnfolderBase]: For 50217/52947 co-relation queries the response was YES. [2024-12-02 12:51:57,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123282 conditions, 49887 events. 27381/49887 cut-off events. For 50217/52947 co-relation queries the response was YES. Maximal size of possible extension queue 1682. Compared 479955 event pairs, 7040 based on Foata normal form. 1739/47427 useless extension candidates. Maximal degree in co-relation 123243. Up to 14356 conditions per place. [2024-12-02 12:51:57,317 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 176 selfloop transitions, 18 changer transitions 0/241 dead transitions. [2024-12-02 12:51:57,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 241 transitions, 1328 flow [2024-12-02 12:51:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:51:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:51:57,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 670 transitions. [2024-12-02 12:51:57,319 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6767676767676768 [2024-12-02 12:51:57,319 INFO L175 Difference]: Start difference. First operand has 138 places, 119 transitions, 484 flow. Second operand 10 states and 670 transitions. [2024-12-02 12:51:57,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 241 transitions, 1328 flow [2024-12-02 12:51:57,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 241 transitions, 1260 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-12-02 12:51:57,675 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 526 flow [2024-12-02 12:51:57,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=526, PETRI_PLACES=136, PETRI_TRANSITIONS=121} [2024-12-02 12:51:57,675 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 42 predicate places. [2024-12-02 12:51:57,675 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 526 flow [2024-12-02 12:51:57,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.53846153846154) internal successors, (683), 13 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:51:57,676 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:51:57,676 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:57,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:51:57,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 12:51:57,876 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:51:57,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:57,876 INFO L85 PathProgramCache]: Analyzing trace with hash 836406045, now seen corresponding path program 1 times [2024-12-02 12:51:57,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:57,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075747652] [2024-12-02 12:51:57,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:57,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:58,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:58,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075747652] [2024-12-02 12:51:58,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075747652] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:58,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427998867] [2024-12-02 12:51:58,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:58,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:58,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:58,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:58,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:51:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:58,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 12:51:58,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:58,156 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 [2024-12-02 12:51:58,211 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 17 treesize of output 9 [2024-12-02 12:51:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:58,216 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:51:58,268 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 [2024-12-02 12:51:58,271 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 [2024-12-02 12:51:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:58,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427998867] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:51:58,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:51:58,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 12:51:58,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060170023] [2024-12-02 12:51:58,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:51:58,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:51:58,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:58,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:51:58,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:51:58,329 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 99 [2024-12-02 12:51:58,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 121 transitions, 526 flow. Second operand has 13 states, 13 states have (on average 54.69230769230769) internal successors, (711), 13 states have internal predecessors, (711), 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) [2024-12-02 12:51:58,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:51:58,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 99 [2024-12-02 12:51:58,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:52:04,987 INFO L124 PetriNetUnfolderBase]: 42785/85141 cut-off events. [2024-12-02 12:52:04,988 INFO L125 PetriNetUnfolderBase]: For 101508/106166 co-relation queries the response was YES. [2024-12-02 12:52:05,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204310 conditions, 85141 events. 42785/85141 cut-off events. For 101508/106166 co-relation queries the response was YES. Maximal size of possible extension queue 2444. Compared 926087 event pairs, 10800 based on Foata normal form. 2760/79997 useless extension candidates. Maximal degree in co-relation 204264. Up to 20920 conditions per place. [2024-12-02 12:52:05,549 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 205 selfloop transitions, 18 changer transitions 0/276 dead transitions. [2024-12-02 12:52:05,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 276 transitions, 1776 flow [2024-12-02 12:52:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:52:05,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:52:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 683 transitions. [2024-12-02 12:52:05,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6898989898989899 [2024-12-02 12:52:05,551 INFO L175 Difference]: Start difference. First operand has 136 places, 121 transitions, 526 flow. Second operand 10 states and 683 transitions. [2024-12-02 12:52:05,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 276 transitions, 1776 flow [2024-12-02 12:52:05,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 276 transitions, 1704 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-12-02 12:52:05,995 INFO L231 Difference]: Finished difference. Result has 141 places, 130 transitions, 609 flow [2024-12-02 12:52:05,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=609, PETRI_PLACES=141, PETRI_TRANSITIONS=130} [2024-12-02 12:52:05,995 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 47 predicate places. [2024-12-02 12:52:05,995 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 130 transitions, 609 flow [2024-12-02 12:52:05,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 54.69230769230769) internal successors, (711), 13 states have internal predecessors, (711), 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) [2024-12-02 12:52:05,996 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:52:05,996 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:06,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 12:52:06,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 12:52:06,196 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:52:06,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1244285795, now seen corresponding path program 1 times [2024-12-02 12:52:06,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:06,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689046186] [2024-12-02 12:52:06,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:06,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:52:06,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:06,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689046186] [2024-12-02 12:52:06,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689046186] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:06,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:52:06,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:52:06,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522199584] [2024-12-02 12:52:06,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:06,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:52:06,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:06,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:52:06,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:52:06,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2024-12-02 12:52:06,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 609 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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) [2024-12-02 12:52:06,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:52:06,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2024-12-02 12:52:06,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:52:14,046 INFO L124 PetriNetUnfolderBase]: 50767/96595 cut-off events. [2024-12-02 12:52:14,046 INFO L125 PetriNetUnfolderBase]: For 133580/138746 co-relation queries the response was YES. [2024-12-02 12:52:14,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250697 conditions, 96595 events. 50767/96595 cut-off events. For 133580/138746 co-relation queries the response was YES. Maximal size of possible extension queue 2706. Compared 1031510 event pairs, 19055 based on Foata normal form. 3852/92076 useless extension candidates. Maximal degree in co-relation 250649. Up to 34751 conditions per place. [2024-12-02 12:52:15,010 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 147 selfloop transitions, 8 changer transitions 0/203 dead transitions. [2024-12-02 12:52:15,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 203 transitions, 1254 flow [2024-12-02 12:52:15,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:52:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:52:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2024-12-02 12:52:15,011 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2024-12-02 12:52:15,012 INFO L175 Difference]: Start difference. First operand has 141 places, 130 transitions, 609 flow. Second operand 4 states and 300 transitions. [2024-12-02 12:52:15,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 203 transitions, 1254 flow [2024-12-02 12:52:15,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 203 transitions, 1233 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-12-02 12:52:15,972 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 591 flow [2024-12-02 12:52:15,972 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=591, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2024-12-02 12:52:15,972 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 45 predicate places. [2024-12-02 12:52:15,973 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 591 flow [2024-12-02 12:52:15,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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) [2024-12-02 12:52:15,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:52:15,973 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:15,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:52:15,973 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:52:15,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:15,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1244284770, now seen corresponding path program 1 times [2024-12-02 12:52:15,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:15,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839378022] [2024-12-02 12:52:15,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:15,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:52:16,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:16,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839378022] [2024-12-02 12:52:16,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839378022] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:16,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:52:16,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:52:16,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060714202] [2024-12-02 12:52:16,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:16,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:52:16,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:16,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:52:16,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:52:16,066 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 99 [2024-12-02 12:52:16,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 591 flow. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 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) [2024-12-02 12:52:16,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:52:16,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 99 [2024-12-02 12:52:16,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:52:25,369 INFO L124 PetriNetUnfolderBase]: 64517/112121 cut-off events. [2024-12-02 12:52:25,369 INFO L125 PetriNetUnfolderBase]: For 152736/160488 co-relation queries the response was YES. [2024-12-02 12:52:25,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299995 conditions, 112121 events. 64517/112121 cut-off events. For 152736/160488 co-relation queries the response was YES. Maximal size of possible extension queue 3094. Compared 1111767 event pairs, 12136 based on Foata normal form. 4426/110157 useless extension candidates. Maximal degree in co-relation 299951. Up to 53851 conditions per place. [2024-12-02 12:52:26,156 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 196 selfloop transitions, 6 changer transitions 0/249 dead transitions. [2024-12-02 12:52:26,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 249 transitions, 1543 flow [2024-12-02 12:52:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:52:26,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:52:26,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2024-12-02 12:52:26,158 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-12-02 12:52:26,158 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 591 flow. Second operand 5 states and 385 transitions. [2024-12-02 12:52:26,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 249 transitions, 1543 flow [2024-12-02 12:52:27,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 249 transitions, 1530 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:52:27,382 INFO L231 Difference]: Finished difference. Result has 143 places, 129 transitions, 603 flow [2024-12-02 12:52:27,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=603, PETRI_PLACES=143, PETRI_TRANSITIONS=129} [2024-12-02 12:52:27,382 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 49 predicate places. [2024-12-02 12:52:27,382 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 129 transitions, 603 flow [2024-12-02 12:52:27,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 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) [2024-12-02 12:52:27,382 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:52:27,382 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:27,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 12:52:27,382 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:52:27,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:27,383 INFO L85 PathProgramCache]: Analyzing trace with hash -81876995, now seen corresponding path program 1 times [2024-12-02 12:52:27,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:27,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106940637] [2024-12-02 12:52:27,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:27,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:52:27,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:27,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106940637] [2024-12-02 12:52:27,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106940637] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:27,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:52:27,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:52:27,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770889235] [2024-12-02 12:52:27,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:27,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:52:27,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:27,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:52:27,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:52:27,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 99 [2024-12-02 12:52:27,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 129 transitions, 603 flow. Second operand has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 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) [2024-12-02 12:52:27,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:52:27,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 99 [2024-12-02 12:52:27,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:52:37,487 INFO L124 PetriNetUnfolderBase]: 76543/120353 cut-off events. [2024-12-02 12:52:37,487 INFO L125 PetriNetUnfolderBase]: For 186834/197167 co-relation queries the response was YES. [2024-12-02 12:52:38,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340177 conditions, 120353 events. 76543/120353 cut-off events. For 186834/197167 co-relation queries the response was YES. Maximal size of possible extension queue 3156. Compared 1061930 event pairs, 4061 based on Foata normal form. 6355/121899 useless extension candidates. Maximal degree in co-relation 340130. Up to 61361 conditions per place. [2024-12-02 12:52:38,482 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 231 selfloop transitions, 10 changer transitions 0/288 dead transitions. [2024-12-02 12:52:38,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 288 transitions, 1817 flow [2024-12-02 12:52:38,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:52:38,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 12:52:38,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 453 transitions. [2024-12-02 12:52:38,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7626262626262627 [2024-12-02 12:52:38,485 INFO L175 Difference]: Start difference. First operand has 143 places, 129 transitions, 603 flow. Second operand 6 states and 453 transitions. [2024-12-02 12:52:38,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 288 transitions, 1817 flow [2024-12-02 12:52:40,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 288 transitions, 1811 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 12:52:40,009 INFO L231 Difference]: Finished difference. Result has 150 places, 133 transitions, 661 flow [2024-12-02 12:52:40,010 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=661, PETRI_PLACES=150, PETRI_TRANSITIONS=133} [2024-12-02 12:52:40,010 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 56 predicate places. [2024-12-02 12:52:40,010 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 133 transitions, 661 flow [2024-12-02 12:52:40,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 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) [2024-12-02 12:52:40,010 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:52:40,010 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:40,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 12:52:40,010 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:52:40,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:40,011 INFO L85 PathProgramCache]: Analyzing trace with hash 158752662, now seen corresponding path program 1 times [2024-12-02 12:52:40,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:40,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000220263] [2024-12-02 12:52:40,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:40,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:52:40,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:40,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000220263] [2024-12-02 12:52:40,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000220263] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:52:40,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902694586] [2024-12-02 12:52:40,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:40,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:52:40,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:52:40,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:52:40,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:52:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:40,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 12:52:40,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:52:40,250 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 [2024-12-02 12:52:40,299 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 15 treesize of output 7 [2024-12-02 12:52:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:52:40,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:52:40,363 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 [2024-12-02 12:52:40,366 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 [2024-12-02 12:52:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:52:40,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902694586] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:52:40,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:52:40,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 12:52:40,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701242995] [2024-12-02 12:52:40,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:52:40,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:52:40,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:40,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:52:40,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:52:40,433 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 99 [2024-12-02 12:52:40,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 133 transitions, 661 flow. Second operand has 13 states, 13 states have (on average 52.84615384615385) internal successors, (687), 13 states have internal predecessors, (687), 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) [2024-12-02 12:52:40,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:52:40,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 99 [2024-12-02 12:52:40,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:52:49,703 INFO L124 PetriNetUnfolderBase]: 57697/107049 cut-off events. [2024-12-02 12:52:49,703 INFO L125 PetriNetUnfolderBase]: For 212889/218075 co-relation queries the response was YES. [2024-12-02 12:52:50,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286925 conditions, 107049 events. 57697/107049 cut-off events. For 212889/218075 co-relation queries the response was YES. Maximal size of possible extension queue 3044. Compared 1126958 event pairs, 18287 based on Foata normal form. 3883/102380 useless extension candidates. Maximal degree in co-relation 286874. Up to 29959 conditions per place. [2024-12-02 12:52:50,625 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 224 selfloop transitions, 18 changer transitions 0/292 dead transitions. [2024-12-02 12:52:50,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 292 transitions, 2079 flow [2024-12-02 12:52:50,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:52:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:52:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 663 transitions. [2024-12-02 12:52:50,627 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6696969696969697 [2024-12-02 12:52:50,627 INFO L175 Difference]: Start difference. First operand has 150 places, 133 transitions, 661 flow. Second operand 10 states and 663 transitions. [2024-12-02 12:52:50,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 292 transitions, 2079 flow [2024-12-02 12:52:51,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 292 transitions, 1984 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-12-02 12:52:51,168 INFO L231 Difference]: Finished difference. Result has 157 places, 135 transitions, 696 flow [2024-12-02 12:52:51,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=696, PETRI_PLACES=157, PETRI_TRANSITIONS=135} [2024-12-02 12:52:51,169 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 63 predicate places. [2024-12-02 12:52:51,169 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 135 transitions, 696 flow [2024-12-02 12:52:51,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.84615384615385) internal successors, (687), 13 states have internal predecessors, (687), 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) [2024-12-02 12:52:51,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:52:51,169 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:51,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:52:51,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 12:52:51,370 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:52:51,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:51,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1756781252, now seen corresponding path program 1 times [2024-12-02 12:52:51,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:51,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957526142] [2024-12-02 12:52:51,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:51,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:52:51,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:51,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957526142] [2024-12-02 12:52:51,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957526142] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:51,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:52:51,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:52:51,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964116494] [2024-12-02 12:52:51,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:51,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:52:51,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:51,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:52:51,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:52:51,407 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 99 [2024-12-02 12:52:51,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 135 transitions, 696 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2024-12-02 12:52:51,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:52:51,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 99 [2024-12-02 12:52:51,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:53:00,045 INFO L124 PetriNetUnfolderBase]: 46015/90623 cut-off events. [2024-12-02 12:53:00,045 INFO L125 PetriNetUnfolderBase]: For 168286/172278 co-relation queries the response was YES. [2024-12-02 12:53:00,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254798 conditions, 90623 events. 46015/90623 cut-off events. For 168286/172278 co-relation queries the response was YES. Maximal size of possible extension queue 2519. Compared 991031 event pairs, 21461 based on Foata normal form. 3739/90860 useless extension candidates. Maximal degree in co-relation 254744. Up to 37323 conditions per place. [2024-12-02 12:53:00,830 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 148 selfloop transitions, 6 changer transitions 0/210 dead transitions. [2024-12-02 12:53:00,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 210 transitions, 1390 flow [2024-12-02 12:53:00,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:53:00,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:53:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-12-02 12:53:00,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8055555555555556 [2024-12-02 12:53:00,833 INFO L175 Difference]: Start difference. First operand has 157 places, 135 transitions, 696 flow. Second operand 4 states and 319 transitions. [2024-12-02 12:53:00,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 210 transitions, 1390 flow [2024-12-02 12:53:04,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 210 transitions, 1342 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-12-02 12:53:04,259 INFO L231 Difference]: Finished difference. Result has 154 places, 135 transitions, 692 flow [2024-12-02 12:53:04,259 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=692, PETRI_PLACES=154, PETRI_TRANSITIONS=135} [2024-12-02 12:53:04,259 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 60 predicate places. [2024-12-02 12:53:04,259 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 692 flow [2024-12-02 12:53:04,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2024-12-02 12:53:04,259 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:53:04,259 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:53:04,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 12:53:04,259 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:53:04,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:04,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1590869977, now seen corresponding path program 1 times [2024-12-02 12:53:04,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:04,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811283488] [2024-12-02 12:53:04,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:04,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:53:04,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:04,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811283488] [2024-12-02 12:53:04,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811283488] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:04,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:53:04,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:53:04,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174943856] [2024-12-02 12:53:04,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:04,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:53:04,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:04,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:53:04,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:53:04,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 99 [2024-12-02 12:53:04,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 135 transitions, 692 flow. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 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) [2024-12-02 12:53:04,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:53:04,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 99 [2024-12-02 12:53:04,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:53:14,818 INFO L124 PetriNetUnfolderBase]: 69467/122321 cut-off events. [2024-12-02 12:53:14,818 INFO L125 PetriNetUnfolderBase]: For 210296/215582 co-relation queries the response was YES. [2024-12-02 12:53:15,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345795 conditions, 122321 events. 69467/122321 cut-off events. For 210296/215582 co-relation queries the response was YES. Maximal size of possible extension queue 3235. Compared 1240964 event pairs, 29387 based on Foata normal form. 4520/121393 useless extension candidates. Maximal degree in co-relation 345744. Up to 51769 conditions per place. [2024-12-02 12:53:16,137 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 149 selfloop transitions, 10 changer transitions 0/211 dead transitions. [2024-12-02 12:53:16,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 211 transitions, 1374 flow [2024-12-02 12:53:16,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:53:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:53:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2024-12-02 12:53:16,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7676767676767676 [2024-12-02 12:53:16,139 INFO L175 Difference]: Start difference. First operand has 154 places, 135 transitions, 692 flow. Second operand 4 states and 304 transitions. [2024-12-02 12:53:16,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 211 transitions, 1374 flow [2024-12-02 12:53:20,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 211 transitions, 1371 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:53:20,488 INFO L231 Difference]: Finished difference. Result has 158 places, 136 transitions, 732 flow [2024-12-02 12:53:20,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=732, PETRI_PLACES=158, PETRI_TRANSITIONS=136} [2024-12-02 12:53:20,488 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 64 predicate places. [2024-12-02 12:53:20,488 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 136 transitions, 732 flow [2024-12-02 12:53:20,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 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) [2024-12-02 12:53:20,488 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:53:20,488 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:53:20,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 12:53:20,488 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:53:20,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:20,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1590868952, now seen corresponding path program 1 times [2024-12-02 12:53:20,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:20,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772726116] [2024-12-02 12:53:20,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:20,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:53:20,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:20,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772726116] [2024-12-02 12:53:20,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772726116] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:20,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:53:20,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:53:20,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885994310] [2024-12-02 12:53:20,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:20,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:53:20,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:20,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:53:20,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:53:20,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 99 [2024-12-02 12:53:20,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 136 transitions, 732 flow. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 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) [2024-12-02 12:53:20,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:53:20,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 99 [2024-12-02 12:53:20,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:53:30,965 INFO L124 PetriNetUnfolderBase]: 62693/109716 cut-off events. [2024-12-02 12:53:30,965 INFO L125 PetriNetUnfolderBase]: For 246670/251183 co-relation queries the response was YES. [2024-12-02 12:53:31,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325718 conditions, 109716 events. 62693/109716 cut-off events. For 246670/251183 co-relation queries the response was YES. Maximal size of possible extension queue 2919. Compared 1089531 event pairs, 25153 based on Foata normal form. 4216/108732 useless extension candidates. Maximal degree in co-relation 325666. Up to 44907 conditions per place. [2024-12-02 12:53:31,901 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 224 selfloop transitions, 13 changer transitions 0/286 dead transitions. [2024-12-02 12:53:31,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 286 transitions, 1926 flow [2024-12-02 12:53:31,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:53:31,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 12:53:31,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 441 transitions. [2024-12-02 12:53:31,902 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7424242424242424 [2024-12-02 12:53:31,902 INFO L175 Difference]: Start difference. First operand has 158 places, 136 transitions, 732 flow. Second operand 6 states and 441 transitions. [2024-12-02 12:53:31,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 286 transitions, 1926 flow [2024-12-02 12:53:36,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 286 transitions, 1896 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-12-02 12:53:36,539 INFO L231 Difference]: Finished difference. Result has 161 places, 138 transitions, 748 flow [2024-12-02 12:53:36,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=748, PETRI_PLACES=161, PETRI_TRANSITIONS=138} [2024-12-02 12:53:36,540 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 67 predicate places. [2024-12-02 12:53:36,540 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 138 transitions, 748 flow [2024-12-02 12:53:36,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 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) [2024-12-02 12:53:36,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:53:36,540 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:53:36,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 12:53:36,540 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:53:36,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:36,541 INFO L85 PathProgramCache]: Analyzing trace with hash 626365023, now seen corresponding path program 1 times [2024-12-02 12:53:36,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:36,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565992418] [2024-12-02 12:53:36,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:36,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:53:36,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:36,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565992418] [2024-12-02 12:53:36,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565992418] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:36,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:53:36,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:53:36,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924071435] [2024-12-02 12:53:36,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:36,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:53:36,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:36,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:53:36,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:53:36,640 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 99 [2024-12-02 12:53:36,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 138 transitions, 748 flow. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 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) [2024-12-02 12:53:36,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:53:36,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 99 [2024-12-02 12:53:36,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:53:54,163 INFO L124 PetriNetUnfolderBase]: 110706/193468 cut-off events. [2024-12-02 12:53:54,163 INFO L125 PetriNetUnfolderBase]: For 576547/589169 co-relation queries the response was YES. [2024-12-02 12:53:55,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568326 conditions, 193468 events. 110706/193468 cut-off events. For 576547/589169 co-relation queries the response was YES. Maximal size of possible extension queue 5594. Compared 2055097 event pairs, 19512 based on Foata normal form. 10094/192802 useless extension candidates. Maximal degree in co-relation 568273. Up to 102894 conditions per place. [2024-12-02 12:53:55,844 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 296 selfloop transitions, 12 changer transitions 0/356 dead transitions. [2024-12-02 12:53:55,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 356 transitions, 2779 flow [2024-12-02 12:53:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:53:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 12:53:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 515 transitions. [2024-12-02 12:53:55,846 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7431457431457431 [2024-12-02 12:53:55,846 INFO L175 Difference]: Start difference. First operand has 161 places, 138 transitions, 748 flow. Second operand 7 states and 515 transitions. [2024-12-02 12:53:55,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 356 transitions, 2779 flow [2024-12-02 12:54:00,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 356 transitions, 2692 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-12-02 12:54:00,729 INFO L231 Difference]: Finished difference. Result has 168 places, 149 transitions, 838 flow [2024-12-02 12:54:00,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=838, PETRI_PLACES=168, PETRI_TRANSITIONS=149} [2024-12-02 12:54:00,729 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 74 predicate places. [2024-12-02 12:54:00,730 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 149 transitions, 838 flow [2024-12-02 12:54:00,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 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) [2024-12-02 12:54:00,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:54:00,730 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:54:00,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 12:54:00,730 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:54:00,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:00,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1054802809, now seen corresponding path program 1 times [2024-12-02 12:54:00,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:00,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917094454] [2024-12-02 12:54:00,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:00,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:00,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:54:00,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:00,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917094454] [2024-12-02 12:54:00,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917094454] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:54:00,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286302870] [2024-12-02 12:54:00,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:00,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:54:00,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:54:00,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:54:00,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0818c017-c9ca-4746-9561-235a7b0e25f4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:54:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:01,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 12:54:01,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:54:01,074 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 [2024-12-02 12:54:01,327 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-12-02 12:54:01,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-12-02 12:54:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:54:01,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:54:01,583 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 [2024-12-02 12:54:01,590 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 [2024-12-02 12:54:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:54:01,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286302870] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:54:01,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:54:01,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2024-12-02 12:54:01,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086785566] [2024-12-02 12:54:01,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:54:01,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 12:54:01,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:01,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 12:54:01,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:54:01,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 99 [2024-12-02 12:54:01,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 149 transitions, 838 flow. Second operand has 19 states, 19 states have (on average 52.8421052631579) internal successors, (1004), 19 states have internal predecessors, (1004), 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) [2024-12-02 12:54:01,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:54:01,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 99 [2024-12-02 12:54:01,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand