./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU --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 c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:14:17,004 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:14:17,100 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:14:17,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:14:17,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:14:17,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:14:17,133 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:14:17,134 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:14:17,134 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:14:17,135 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:14:17,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:14:17,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:14:17,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:14:17,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:14:17,137 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:14:17,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:14:17,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:14:17,138 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:14:17,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:14:17,139 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:14:17,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:14:17,143 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:14:17,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:14:17,143 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:14:17,144 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:14:17,144 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:14:17,144 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:14:17,144 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:14:17,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:14:17,145 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:14:17,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:14:17,145 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:14:17,145 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:14:17,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:14:17,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:14:17,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:14:17,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:14:17,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:14:17,149 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:14:17,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:14:17,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:14:17,150 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:14:17,150 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:14:17,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:14:17,150 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2024-10-31 22:14:17,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:14:17,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:14:17,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:14:17,546 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:14:17,546 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:14:17,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c Unable to find full path for "g++" [2024-10-31 22:14:19,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:14:20,051 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:14:20,052 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-10-31 22:14:20,065 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/data/a2819cca6/be27897941624223a0a1ae8fba068c2f/FLAGecdca2e25 [2024-10-31 22:14:20,079 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/data/a2819cca6/be27897941624223a0a1ae8fba068c2f [2024-10-31 22:14:20,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:14:20,084 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:14:20,086 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:20,086 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:14:20,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:14:20,093 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:20" (1/1) ... [2024-10-31 22:14:20,095 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b22b10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20, skipping insertion in model container [2024-10-31 22:14:20,095 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:20" (1/1) ... [2024-10-31 22:14:20,122 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:14:20,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:20,404 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:14:20,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:20,463 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:14:20,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20 WrapperNode [2024-10-31 22:14:20,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:20,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:20,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:14:20,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:14:20,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20" (1/1) ... [2024-10-31 22:14:20,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20" (1/1) ... [2024-10-31 22:14:20,512 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 146 [2024-10-31 22:14:20,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:20,516 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:14:20,516 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:14:20,516 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:14:20,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20" (1/1) ... [2024-10-31 22:14:20,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20" (1/1) ... [2024-10-31 22:14:20,540 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20" (1/1) ... [2024-10-31 22:14:20,577 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-10-31 22:14:20,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20" (1/1) ... [2024-10-31 22:14:20,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20" (1/1) ... [2024-10-31 22:14:20,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20" (1/1) ... [2024-10-31 22:14:20,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20" (1/1) ... [2024-10-31 22:14:20,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20" (1/1) ... [2024-10-31 22:14:20,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20" (1/1) ... [2024-10-31 22:14:20,611 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:14:20,612 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:14:20,616 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:14:20,616 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:14:20,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20" (1/1) ... [2024-10-31 22:14:20,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:14:20,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:20,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:20,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:14:20,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:14:20,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:14:20,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:14:20,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:14:20,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:14:20,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:14:20,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:14:20,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:14:20,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:14:20,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:14:20,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:14:20,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:14:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:14:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:14:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:14:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:14:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:14:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:14:20,700 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:14:20,858 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:14:20,860 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:14:21,346 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:14:21,346 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:14:21,803 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:14:21,803 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-31 22:14:21,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:21 BoogieIcfgContainer [2024-10-31 22:14:21,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:14:21,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:14:21,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:14:21,813 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:14:21,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:14:20" (1/3) ... [2024-10-31 22:14:21,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7413f3f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:14:21, skipping insertion in model container [2024-10-31 22:14:21,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:20" (2/3) ... [2024-10-31 22:14:21,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7413f3f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:14:21, skipping insertion in model container [2024-10-31 22:14:21,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:21" (3/3) ... [2024-10-31 22:14:21,819 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-10-31 22:14:21,839 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:14:21,839 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-31 22:14:21,839 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:14:21,910 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:14:21,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 63 transitions, 147 flow [2024-10-31 22:14:22,011 INFO L124 PetriNetUnfolderBase]: 7/60 cut-off events. [2024-10-31 22:14:22,012 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:14:22,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 60 events. 7/60 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-10-31 22:14:22,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 63 transitions, 147 flow [2024-10-31 22:14:22,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 58 transitions, 131 flow [2024-10-31 22:14:22,035 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:14:22,047 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;@77fdda4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:14:22,048 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-31 22:14:22,053 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:14:22,053 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:14:22,054 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:14:22,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:22,054 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:14:22,055 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:22,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:22,061 INFO L85 PathProgramCache]: Analyzing trace with hash 612274, now seen corresponding path program 1 times [2024-10-31 22:14:22,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:22,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695957233] [2024-10-31 22:14:22,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:22,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:22,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:22,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695957233] [2024-10-31 22:14:22,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695957233] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:22,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:22,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:14:22,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734011221] [2024-10-31 22:14:22,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:22,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:14:22,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:22,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:14:22,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:14:22,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-10-31 22:14:22,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-10-31 22:14:22,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:22,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-10-31 22:14:22,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:23,140 INFO L124 PetriNetUnfolderBase]: 697/1438 cut-off events. [2024-10-31 22:14:23,141 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-10-31 22:14:23,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2475 conditions, 1438 events. 697/1438 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8871 event pairs, 482 based on Foata normal form. 3/1141 useless extension candidates. Maximal degree in co-relation 2201. Up to 938 conditions per place. [2024-10-31 22:14:23,165 INFO L140 encePairwiseOnDemand]: 47/63 looper letters, 37 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-10-31 22:14:23,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 243 flow [2024-10-31 22:14:23,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:14:23,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:14:23,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-10-31 22:14:23,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5753968253968254 [2024-10-31 22:14:23,185 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 131 flow. Second operand 4 states and 145 transitions. [2024-10-31 22:14:23,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 243 flow [2024-10-31 22:14:23,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 234 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:14:23,201 INFO L231 Difference]: Finished difference. Result has 62 places, 67 transitions, 210 flow [2024-10-31 22:14:23,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=62, PETRI_TRANSITIONS=67} [2024-10-31 22:14:23,210 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-10-31 22:14:23,210 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 67 transitions, 210 flow [2024-10-31 22:14:23,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-10-31 22:14:23,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:23,211 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:14:23,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:14:23,212 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:23,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:23,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1060991097, now seen corresponding path program 1 times [2024-10-31 22:14:23,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:23,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168261123] [2024-10-31 22:14:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:23,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:23,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:23,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168261123] [2024-10-31 22:14:23,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168261123] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:23,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628867230] [2024-10-31 22:14:23,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:23,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:23,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:23,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:23,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:14:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:23,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:14:23,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:23,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:14:23,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628867230] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:23,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:14:23,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:14:23,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135296531] [2024-10-31 22:14:23,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:23,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:14:23,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:23,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:14:23,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:14:23,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-10-31 22:14:23,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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) [2024-10-31 22:14:23,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:23,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-10-31 22:14:23,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:24,083 INFO L124 PetriNetUnfolderBase]: 697/1435 cut-off events. [2024-10-31 22:14:24,084 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-31 22:14:24,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2467 conditions, 1435 events. 697/1435 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8870 event pairs, 482 based on Foata normal form. 3/1143 useless extension candidates. Maximal degree in co-relation 2394. Up to 923 conditions per place. [2024-10-31 22:14:24,098 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 27 selfloop transitions, 17 changer transitions 0/64 dead transitions. [2024-10-31 22:14:24,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 286 flow [2024-10-31 22:14:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:14:24,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:14:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-10-31 22:14:24,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4894179894179894 [2024-10-31 22:14:24,103 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 210 flow. Second operand 6 states and 185 transitions. [2024-10-31 22:14:24,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 286 flow [2024-10-31 22:14:24,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:14:24,110 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 232 flow [2024-10-31 22:14:24,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-10-31 22:14:24,111 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-10-31 22:14:24,113 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 232 flow [2024-10-31 22:14:24,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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) [2024-10-31 22:14:24,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:24,115 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:14:24,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:14:24,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:24,318 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:24,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:24,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1469013752, now seen corresponding path program 1 times [2024-10-31 22:14:24,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:24,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726784335] [2024-10-31 22:14:24,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:24,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:24,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:24,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726784335] [2024-10-31 22:14:24,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726784335] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:24,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523514004] [2024-10-31 22:14:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:24,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:24,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:24,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:24,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:14:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:24,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:14:24,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:24,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:24,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:14:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:24,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523514004] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:14:24,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:14:24,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:14:24,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297855162] [2024-10-31 22:14:24,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:14:24,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:14:24,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:24,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:14:24,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:14:24,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-10-31 22:14:24,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 232 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 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) [2024-10-31 22:14:24,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:24,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-10-31 22:14:24,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:25,462 INFO L124 PetriNetUnfolderBase]: 706/1471 cut-off events. [2024-10-31 22:14:25,462 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-10-31 22:14:25,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608 conditions, 1471 events. 706/1471 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9192 event pairs, 482 based on Foata normal form. 9/1185 useless extension candidates. Maximal degree in co-relation 2396. Up to 938 conditions per place. [2024-10-31 22:14:25,475 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 34 selfloop transitions, 37 changer transitions 0/91 dead transitions. [2024-10-31 22:14:25,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 91 transitions, 548 flow [2024-10-31 22:14:25,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:14:25,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:14:25,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-10-31 22:14:25,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-10-31 22:14:25,479 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 232 flow. Second operand 10 states and 310 transitions. [2024-10-31 22:14:25,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 91 transitions, 548 flow [2024-10-31 22:14:25,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 465 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-31 22:14:25,483 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 447 flow [2024-10-31 22:14:25,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=447, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2024-10-31 22:14:25,484 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2024-10-31 22:14:25,485 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 447 flow [2024-10-31 22:14:25,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 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) [2024-10-31 22:14:25,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:25,485 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:25,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:14:25,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:25,686 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:25,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:25,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1020442761, now seen corresponding path program 1 times [2024-10-31 22:14:25,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:25,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655632593] [2024-10-31 22:14:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:25,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:25,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:25,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655632593] [2024-10-31 22:14:25,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655632593] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:25,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:25,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:14:25,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242681222] [2024-10-31 22:14:25,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:25,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:14:25,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:14:25,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:14:25,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2024-10-31 22:14:25,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 447 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2024-10-31 22:14:25,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:25,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2024-10-31 22:14:25,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:26,273 INFO L124 PetriNetUnfolderBase]: 1490/2560 cut-off events. [2024-10-31 22:14:26,273 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-10-31 22:14:26,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4824 conditions, 2560 events. 1490/2560 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15257 event pairs, 802 based on Foata normal form. 74/2061 useless extension candidates. Maximal degree in co-relation 4726. Up to 1559 conditions per place. [2024-10-31 22:14:26,299 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 99 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2024-10-31 22:14:26,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 124 transitions, 725 flow [2024-10-31 22:14:26,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:14:26,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:14:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-10-31 22:14:26,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2024-10-31 22:14:26,302 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 447 flow. Second operand 4 states and 177 transitions. [2024-10-31 22:14:26,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 124 transitions, 725 flow [2024-10-31 22:14:26,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 124 transitions, 688 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-31 22:14:26,309 INFO L231 Difference]: Finished difference. Result has 74 places, 94 transitions, 439 flow [2024-10-31 22:14:26,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=439, PETRI_PLACES=74, PETRI_TRANSITIONS=94} [2024-10-31 22:14:26,310 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2024-10-31 22:14:26,310 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 94 transitions, 439 flow [2024-10-31 22:14:26,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2024-10-31 22:14:26,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:26,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:26,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:14:26,312 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:26,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:26,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1345993272, now seen corresponding path program 1 times [2024-10-31 22:14:26,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:26,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483628159] [2024-10-31 22:14:26,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:26,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:26,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:26,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483628159] [2024-10-31 22:14:26,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483628159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:26,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:26,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:14:26,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443843849] [2024-10-31 22:14:26,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:26,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:14:26,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:26,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:14:26,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:14:26,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 63 [2024-10-31 22:14:26,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 94 transitions, 439 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-10-31 22:14:26,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:26,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 63 [2024-10-31 22:14:26,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:26,861 INFO L124 PetriNetUnfolderBase]: 1551/3174 cut-off events. [2024-10-31 22:14:26,862 INFO L125 PetriNetUnfolderBase]: For 955/1057 co-relation queries the response was YES. [2024-10-31 22:14:26,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6337 conditions, 3174 events. 1551/3174 cut-off events. For 955/1057 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 22189 event pairs, 742 based on Foata normal form. 0/2684 useless extension candidates. Maximal degree in co-relation 6241. Up to 1534 conditions per place. [2024-10-31 22:14:26,898 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 86 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2024-10-31 22:14:26,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 112 transitions, 675 flow [2024-10-31 22:14:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:14:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:14:26,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-10-31 22:14:26,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7195767195767195 [2024-10-31 22:14:26,900 INFO L175 Difference]: Start difference. First operand has 74 places, 94 transitions, 439 flow. Second operand 3 states and 136 transitions. [2024-10-31 22:14:26,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 112 transitions, 675 flow [2024-10-31 22:14:26,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 112 transitions, 669 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:14:26,912 INFO L231 Difference]: Finished difference. Result has 76 places, 96 transitions, 457 flow [2024-10-31 22:14:26,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=457, PETRI_PLACES=76, PETRI_TRANSITIONS=96} [2024-10-31 22:14:26,913 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 15 predicate places. [2024-10-31 22:14:26,913 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 96 transitions, 457 flow [2024-10-31 22:14:26,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-10-31 22:14:26,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:26,914 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:26,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:14:26,914 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:26,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:26,915 INFO L85 PathProgramCache]: Analyzing trace with hash 232420135, now seen corresponding path program 1 times [2024-10-31 22:14:26,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:26,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523483104] [2024-10-31 22:14:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:26,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:14:27,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:27,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523483104] [2024-10-31 22:14:27,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523483104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:27,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:27,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:14:27,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142658554] [2024-10-31 22:14:27,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:27,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:14:27,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:27,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:14:27,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:14:27,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 63 [2024-10-31 22:14:27,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 96 transitions, 457 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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) [2024-10-31 22:14:27,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:27,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 63 [2024-10-31 22:14:27,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:27,849 INFO L124 PetriNetUnfolderBase]: 2210/4359 cut-off events. [2024-10-31 22:14:27,849 INFO L125 PetriNetUnfolderBase]: For 1725/1757 co-relation queries the response was YES. [2024-10-31 22:14:27,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9500 conditions, 4359 events. 2210/4359 cut-off events. For 1725/1757 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 30065 event pairs, 1330 based on Foata normal form. 100/3915 useless extension candidates. Maximal degree in co-relation 9403. Up to 1991 conditions per place. [2024-10-31 22:14:27,889 INFO L140 encePairwiseOnDemand]: 51/63 looper letters, 96 selfloop transitions, 18 changer transitions 0/137 dead transitions. [2024-10-31 22:14:27,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 137 transitions, 819 flow [2024-10-31 22:14:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:14:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:14:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 255 transitions. [2024-10-31 22:14:27,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-10-31 22:14:27,892 INFO L175 Difference]: Start difference. First operand has 76 places, 96 transitions, 457 flow. Second operand 6 states and 255 transitions. [2024-10-31 22:14:27,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 137 transitions, 819 flow [2024-10-31 22:14:27,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 137 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:14:27,908 INFO L231 Difference]: Finished difference. Result has 84 places, 100 transitions, 543 flow [2024-10-31 22:14:27,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=543, PETRI_PLACES=84, PETRI_TRANSITIONS=100} [2024-10-31 22:14:27,910 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2024-10-31 22:14:27,911 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 100 transitions, 543 flow [2024-10-31 22:14:27,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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) [2024-10-31 22:14:27,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:27,912 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:27,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:14:27,913 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:27,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:27,913 INFO L85 PathProgramCache]: Analyzing trace with hash 714400379, now seen corresponding path program 1 times [2024-10-31 22:14:27,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:27,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685785796] [2024-10-31 22:14:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:27,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:27,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:27,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685785796] [2024-10-31 22:14:27,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685785796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:27,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:27,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:14:27,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137990546] [2024-10-31 22:14:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:27,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:14:27,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:27,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:14:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:14:27,994 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-10-31 22:14:27,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 543 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:27,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:27,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-10-31 22:14:27,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:29,080 INFO L124 PetriNetUnfolderBase]: 3397/5877 cut-off events. [2024-10-31 22:14:29,080 INFO L125 PetriNetUnfolderBase]: For 3921/3977 co-relation queries the response was YES. [2024-10-31 22:14:29,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14312 conditions, 5877 events. 3397/5877 cut-off events. For 3921/3977 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 37059 event pairs, 1779 based on Foata normal form. 236/5659 useless extension candidates. Maximal degree in co-relation 14209. Up to 3528 conditions per place. [2024-10-31 22:14:29,142 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 112 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2024-10-31 22:14:29,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 136 transitions, 921 flow [2024-10-31 22:14:29,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:14:29,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:14:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-10-31 22:14:29,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2024-10-31 22:14:29,144 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 543 flow. Second operand 4 states and 169 transitions. [2024-10-31 22:14:29,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 136 transitions, 921 flow [2024-10-31 22:14:29,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 136 transitions, 905 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-31 22:14:29,157 INFO L231 Difference]: Finished difference. Result has 88 places, 101 transitions, 548 flow [2024-10-31 22:14:29,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=548, PETRI_PLACES=88, PETRI_TRANSITIONS=101} [2024-10-31 22:14:29,159 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 27 predicate places. [2024-10-31 22:14:29,159 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 101 transitions, 548 flow [2024-10-31 22:14:29,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:29,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:29,159 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:29,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:14:29,160 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:29,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:29,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1139398177, now seen corresponding path program 1 times [2024-10-31 22:14:29,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:29,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922871752] [2024-10-31 22:14:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:29,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:29,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:29,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922871752] [2024-10-31 22:14:29,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922871752] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:29,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079779566] [2024-10-31 22:14:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:29,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:29,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:29,278 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:29,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:14:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:29,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:14:29,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:14:29,460 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:14:29,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079779566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:29,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:14:29,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-10-31 22:14:29,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394800345] [2024-10-31 22:14:29,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:29,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:14:29,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:29,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:14:29,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:14:29,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-10-31 22:14:29,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 548 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:29,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:29,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-10-31 22:14:29,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:30,192 INFO L124 PetriNetUnfolderBase]: 2102/4010 cut-off events. [2024-10-31 22:14:30,192 INFO L125 PetriNetUnfolderBase]: For 3302/3366 co-relation queries the response was YES. [2024-10-31 22:14:30,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9719 conditions, 4010 events. 2102/4010 cut-off events. For 3302/3366 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 25734 event pairs, 1412 based on Foata normal form. 41/3536 useless extension candidates. Maximal degree in co-relation 9614. Up to 2491 conditions per place. [2024-10-31 22:14:30,225 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 82 selfloop transitions, 18 changer transitions 2/125 dead transitions. [2024-10-31 22:14:30,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 831 flow [2024-10-31 22:14:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:14:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:14:30,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2024-10-31 22:14:30,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6322751322751323 [2024-10-31 22:14:30,227 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 548 flow. Second operand 6 states and 239 transitions. [2024-10-31 22:14:30,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 831 flow [2024-10-31 22:14:30,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 821 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:14:30,237 INFO L231 Difference]: Finished difference. Result has 93 places, 103 transitions, 600 flow [2024-10-31 22:14:30,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=600, PETRI_PLACES=93, PETRI_TRANSITIONS=103} [2024-10-31 22:14:30,238 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2024-10-31 22:14:30,238 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 103 transitions, 600 flow [2024-10-31 22:14:30,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:30,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:30,238 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-31 22:14:30,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:14:30,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 22:14:30,439 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:30,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:30,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1645532079, now seen corresponding path program 2 times [2024-10-31 22:14:30,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:30,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039428458] [2024-10-31 22:14:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:30,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:30,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:30,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039428458] [2024-10-31 22:14:30,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039428458] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:30,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526756055] [2024-10-31 22:14:30,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:14:30,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:30,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:30,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:30,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:14:30,688 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:14:30,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:14:30,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:14:30,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:14:30,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:14:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:14:30,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526756055] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:14:30,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:14:30,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-31 22:14:30,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325933309] [2024-10-31 22:14:30,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:14:30,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:14:30,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:30,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:14:30,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:14:30,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-10-31 22:14:30,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 103 transitions, 600 flow. Second operand has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 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) [2024-10-31 22:14:30,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:30,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-10-31 22:14:30,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:31,902 INFO L124 PetriNetUnfolderBase]: 1785/3578 cut-off events. [2024-10-31 22:14:31,902 INFO L125 PetriNetUnfolderBase]: For 3267/3281 co-relation queries the response was YES. [2024-10-31 22:14:31,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9440 conditions, 3578 events. 1785/3578 cut-off events. For 3267/3281 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 23756 event pairs, 1371 based on Foata normal form. 4/3305 useless extension candidates. Maximal degree in co-relation 9289. Up to 2504 conditions per place. [2024-10-31 22:14:31,940 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 40 selfloop transitions, 50 changer transitions 0/111 dead transitions. [2024-10-31 22:14:31,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 837 flow [2024-10-31 22:14:31,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-31 22:14:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-31 22:14:31,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 635 transitions. [2024-10-31 22:14:31,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.419973544973545 [2024-10-31 22:14:31,944 INFO L175 Difference]: Start difference. First operand has 93 places, 103 transitions, 600 flow. Second operand 24 states and 635 transitions. [2024-10-31 22:14:31,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 837 flow [2024-10-31 22:14:31,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 111 transitions, 803 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:14:31,957 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 747 flow [2024-10-31 22:14:31,958 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=747, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2024-10-31 22:14:31,960 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 53 predicate places. [2024-10-31 22:14:31,961 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 747 flow [2024-10-31 22:14:31,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 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) [2024-10-31 22:14:31,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:31,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:31,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:14:32,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:32,163 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:32,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:32,163 INFO L85 PathProgramCache]: Analyzing trace with hash 116033873, now seen corresponding path program 1 times [2024-10-31 22:14:32,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:32,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659610821] [2024-10-31 22:14:32,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:32,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:32,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:32,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659610821] [2024-10-31 22:14:32,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659610821] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:32,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:32,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:14:32,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701080443] [2024-10-31 22:14:32,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:32,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:14:32,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:32,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:14:32,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:14:32,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-10-31 22:14:32,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 747 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-10-31 22:14:32,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:32,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-10-31 22:14:32,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:33,480 INFO L124 PetriNetUnfolderBase]: 4003/7124 cut-off events. [2024-10-31 22:14:33,480 INFO L125 PetriNetUnfolderBase]: For 7210/7460 co-relation queries the response was YES. [2024-10-31 22:14:33,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18316 conditions, 7124 events. 4003/7124 cut-off events. For 7210/7460 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 47115 event pairs, 1946 based on Foata normal form. 127/6517 useless extension candidates. Maximal degree in co-relation 18221. Up to 3618 conditions per place. [2024-10-31 22:14:33,559 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 136 selfloop transitions, 3 changer transitions 0/159 dead transitions. [2024-10-31 22:14:33,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 159 transitions, 1263 flow [2024-10-31 22:14:33,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:14:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:14:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-10-31 22:14:33,560 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-10-31 22:14:33,561 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 747 flow. Second operand 4 states and 171 transitions. [2024-10-31 22:14:33,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 159 transitions, 1263 flow [2024-10-31 22:14:33,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 159 transitions, 1151 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-10-31 22:14:33,574 INFO L231 Difference]: Finished difference. Result has 110 places, 113 transitions, 657 flow [2024-10-31 22:14:33,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=657, PETRI_PLACES=110, PETRI_TRANSITIONS=113} [2024-10-31 22:14:33,575 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 49 predicate places. [2024-10-31 22:14:33,576 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 113 transitions, 657 flow [2024-10-31 22:14:33,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-10-31 22:14:33,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:33,576 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:33,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:14:33,577 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:33,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:33,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1266516722, now seen corresponding path program 1 times [2024-10-31 22:14:33,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:33,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820304717] [2024-10-31 22:14:33,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:33,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:14:33,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:33,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820304717] [2024-10-31 22:14:33,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820304717] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:33,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730435328] [2024-10-31 22:14:33,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:33,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:33,710 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:33,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:14:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:33,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:14:33,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:14:34,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:14:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:14:34,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730435328] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:14:34,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:14:34,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-31 22:14:34,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868656754] [2024-10-31 22:14:34,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:14:34,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-31 22:14:34,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:34,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-31 22:14:34,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:14:34,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-10-31 22:14:34,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 113 transitions, 657 flow. Second operand has 19 states, 19 states have (on average 23.105263157894736) internal successors, (439), 19 states have internal predecessors, (439), 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) [2024-10-31 22:14:34,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:34,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-10-31 22:14:34,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:36,486 INFO L124 PetriNetUnfolderBase]: 4749/7885 cut-off events. [2024-10-31 22:14:36,486 INFO L125 PetriNetUnfolderBase]: For 7578/8147 co-relation queries the response was YES. [2024-10-31 22:14:36,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22046 conditions, 7885 events. 4749/7885 cut-off events. For 7578/8147 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 50400 event pairs, 1093 based on Foata normal form. 285/7416 useless extension candidates. Maximal degree in co-relation 21884. Up to 1596 conditions per place. [2024-10-31 22:14:36,557 INFO L140 encePairwiseOnDemand]: 48/63 looper letters, 208 selfloop transitions, 76 changer transitions 0/304 dead transitions. [2024-10-31 22:14:36,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 304 transitions, 2122 flow [2024-10-31 22:14:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 22:14:36,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-31 22:14:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 563 transitions. [2024-10-31 22:14:36,560 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5256769374416433 [2024-10-31 22:14:36,560 INFO L175 Difference]: Start difference. First operand has 110 places, 113 transitions, 657 flow. Second operand 17 states and 563 transitions. [2024-10-31 22:14:36,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 304 transitions, 2122 flow [2024-10-31 22:14:36,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 304 transitions, 2104 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:14:36,596 INFO L231 Difference]: Finished difference. Result has 127 places, 147 transitions, 1181 flow [2024-10-31 22:14:36,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1181, PETRI_PLACES=127, PETRI_TRANSITIONS=147} [2024-10-31 22:14:36,597 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 66 predicate places. [2024-10-31 22:14:36,597 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 147 transitions, 1181 flow [2024-10-31 22:14:36,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.105263157894736) internal successors, (439), 19 states have internal predecessors, (439), 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) [2024-10-31 22:14:36,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:36,598 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:36,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:14:36,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-31 22:14:36,799 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:36,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1701626036, now seen corresponding path program 1 times [2024-10-31 22:14:36,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:36,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657718378] [2024-10-31 22:14:36,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:36,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:14:37,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:37,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657718378] [2024-10-31 22:14:37,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657718378] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:37,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940635746] [2024-10-31 22:14:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:37,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:37,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:37,037 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:37,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:14:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:37,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 22:14:37,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-31 22:14:37,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:14:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-31 22:14:37,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940635746] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:14:37,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:14:37,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2024-10-31 22:14:37,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127100313] [2024-10-31 22:14:37,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:14:37,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-31 22:14:37,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:37,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-31 22:14:37,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-10-31 22:14:37,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-10-31 22:14:37,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 147 transitions, 1181 flow. Second operand has 21 states, 21 states have (on average 24.285714285714285) internal successors, (510), 21 states have internal predecessors, (510), 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) [2024-10-31 22:14:37,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:37,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-10-31 22:14:37,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:39,708 INFO L124 PetriNetUnfolderBase]: 4792/8521 cut-off events. [2024-10-31 22:14:39,708 INFO L125 PetriNetUnfolderBase]: For 13590/14073 co-relation queries the response was YES. [2024-10-31 22:14:39,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24835 conditions, 8521 events. 4792/8521 cut-off events. For 13590/14073 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 58250 event pairs, 3715 based on Foata normal form. 104/7884 useless extension candidates. Maximal degree in co-relation 24722. Up to 3619 conditions per place. [2024-10-31 22:14:39,797 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 65 selfloop transitions, 60 changer transitions 0/146 dead transitions. [2024-10-31 22:14:39,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 146 transitions, 1287 flow [2024-10-31 22:14:39,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:14:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 22:14:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 362 transitions. [2024-10-31 22:14:39,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2024-10-31 22:14:39,802 INFO L175 Difference]: Start difference. First operand has 127 places, 147 transitions, 1181 flow. Second operand 12 states and 362 transitions. [2024-10-31 22:14:39,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 146 transitions, 1287 flow [2024-10-31 22:14:39,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 146 transitions, 1145 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-10-31 22:14:39,845 INFO L231 Difference]: Finished difference. Result has 131 places, 125 transitions, 940 flow [2024-10-31 22:14:39,845 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=940, PETRI_PLACES=131, PETRI_TRANSITIONS=125} [2024-10-31 22:14:39,846 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 70 predicate places. [2024-10-31 22:14:39,846 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 125 transitions, 940 flow [2024-10-31 22:14:39,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.285714285714285) internal successors, (510), 21 states have internal predecessors, (510), 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) [2024-10-31 22:14:39,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:39,849 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:39,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 22:14:40,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-31 22:14:40,055 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:40,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:40,056 INFO L85 PathProgramCache]: Analyzing trace with hash 793445938, now seen corresponding path program 1 times [2024-10-31 22:14:40,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:40,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643721193] [2024-10-31 22:14:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:40,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:14:40,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:40,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643721193] [2024-10-31 22:14:40,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643721193] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:40,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:40,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:14:40,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813301659] [2024-10-31 22:14:40,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:40,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:14:40,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:40,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:14:40,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:14:40,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-10-31 22:14:40,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 125 transitions, 940 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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) [2024-10-31 22:14:40,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:40,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-10-31 22:14:40,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:42,077 INFO L124 PetriNetUnfolderBase]: 5790/9825 cut-off events. [2024-10-31 22:14:42,077 INFO L125 PetriNetUnfolderBase]: For 7440/7885 co-relation queries the response was YES. [2024-10-31 22:14:42,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25018 conditions, 9825 events. 5790/9825 cut-off events. For 7440/7885 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 66738 event pairs, 4425 based on Foata normal form. 66/8614 useless extension candidates. Maximal degree in co-relation 24912. Up to 7685 conditions per place. [2024-10-31 22:14:42,165 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 75 selfloop transitions, 17 changer transitions 28/142 dead transitions. [2024-10-31 22:14:42,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 142 transitions, 1248 flow [2024-10-31 22:14:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:14:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:14:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2024-10-31 22:14:42,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-10-31 22:14:42,167 INFO L175 Difference]: Start difference. First operand has 131 places, 125 transitions, 940 flow. Second operand 6 states and 234 transitions. [2024-10-31 22:14:42,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 142 transitions, 1248 flow [2024-10-31 22:14:42,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 142 transitions, 1084 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-10-31 22:14:42,208 INFO L231 Difference]: Finished difference. Result has 125 places, 114 transitions, 719 flow [2024-10-31 22:14:42,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=719, PETRI_PLACES=125, PETRI_TRANSITIONS=114} [2024-10-31 22:14:42,209 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 64 predicate places. [2024-10-31 22:14:42,209 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 719 flow [2024-10-31 22:14:42,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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) [2024-10-31 22:14:42,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:42,210 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:42,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:14:42,210 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:42,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:42,211 INFO L85 PathProgramCache]: Analyzing trace with hash -501443449, now seen corresponding path program 1 times [2024-10-31 22:14:42,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:42,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686819586] [2024-10-31 22:14:42,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:42,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:14:42,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686819586] [2024-10-31 22:14:42,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686819586] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717242971] [2024-10-31 22:14:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:42,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:42,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:42,296 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:42,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:14:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:42,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:14:42,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:14:42,431 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:14:42,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717242971] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:42,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:14:42,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-31 22:14:42,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466018751] [2024-10-31 22:14:42,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:42,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:14:42,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:42,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:14:42,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:14:42,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2024-10-31 22:14:42,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 114 transitions, 719 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-10-31 22:14:42,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:42,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2024-10-31 22:14:42,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:43,847 INFO L124 PetriNetUnfolderBase]: 6418/9784 cut-off events. [2024-10-31 22:14:43,847 INFO L125 PetriNetUnfolderBase]: For 6347/7316 co-relation queries the response was YES. [2024-10-31 22:14:43,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26708 conditions, 9784 events. 6418/9784 cut-off events. For 6347/7316 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 61516 event pairs, 729 based on Foata normal form. 493/9887 useless extension candidates. Maximal degree in co-relation 26611. Up to 3828 conditions per place. [2024-10-31 22:14:43,931 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 129 selfloop transitions, 7 changer transitions 0/154 dead transitions. [2024-10-31 22:14:43,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 154 transitions, 1137 flow [2024-10-31 22:14:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:14:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:14:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-10-31 22:14:43,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-10-31 22:14:43,933 INFO L175 Difference]: Start difference. First operand has 125 places, 114 transitions, 719 flow. Second operand 4 states and 160 transitions. [2024-10-31 22:14:43,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 154 transitions, 1137 flow [2024-10-31 22:14:43,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 154 transitions, 1037 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-10-31 22:14:43,995 INFO L231 Difference]: Finished difference. Result has 108 places, 112 transitions, 641 flow [2024-10-31 22:14:43,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=641, PETRI_PLACES=108, PETRI_TRANSITIONS=112} [2024-10-31 22:14:43,996 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 47 predicate places. [2024-10-31 22:14:43,997 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 112 transitions, 641 flow [2024-10-31 22:14:43,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-10-31 22:14:43,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:43,998 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:44,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 22:14:44,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-31 22:14:44,199 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:44,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:44,199 INFO L85 PathProgramCache]: Analyzing trace with hash -501443448, now seen corresponding path program 1 times [2024-10-31 22:14:44,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:44,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166893281] [2024-10-31 22:14:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:44,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:14:44,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:44,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166893281] [2024-10-31 22:14:44,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166893281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:44,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331008659] [2024-10-31 22:14:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:44,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:44,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:44,307 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:44,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 22:14:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:44,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:14:44,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:14:44,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:14:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:14:44,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331008659] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:14:44,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:14:44,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-31 22:14:44,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580604470] [2024-10-31 22:14:44,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:14:44,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:14:44,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:44,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:14:44,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:14:44,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-10-31 22:14:44,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 641 flow. Second operand has 10 states, 10 states have (on average 28.7) internal successors, (287), 10 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) [2024-10-31 22:14:44,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:44,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-10-31 22:14:44,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:46,770 INFO L124 PetriNetUnfolderBase]: 7968/13305 cut-off events. [2024-10-31 22:14:46,770 INFO L125 PetriNetUnfolderBase]: For 9797/10742 co-relation queries the response was YES. [2024-10-31 22:14:46,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34242 conditions, 13305 events. 7968/13305 cut-off events. For 9797/10742 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 92393 event pairs, 1436 based on Foata normal form. 915/13676 useless extension candidates. Maximal degree in co-relation 34154. Up to 3469 conditions per place. [2024-10-31 22:14:46,873 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 195 selfloop transitions, 10 changer transitions 0/224 dead transitions. [2024-10-31 22:14:46,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 224 transitions, 1426 flow [2024-10-31 22:14:46,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:14:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:14:46,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 288 transitions. [2024-10-31 22:14:46,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-10-31 22:14:46,875 INFO L175 Difference]: Start difference. First operand has 108 places, 112 transitions, 641 flow. Second operand 7 states and 288 transitions. [2024-10-31 22:14:46,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 224 transitions, 1426 flow [2024-10-31 22:14:46,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 224 transitions, 1404 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:14:46,921 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 692 flow [2024-10-31 22:14:46,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=692, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2024-10-31 22:14:46,922 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 54 predicate places. [2024-10-31 22:14:46,922 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 692 flow [2024-10-31 22:14:46,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.7) internal successors, (287), 10 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) [2024-10-31 22:14:46,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:46,923 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2024-10-31 22:14:46,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-31 22:14:47,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7defd85-5b5c-4e4d-94d2-2b0e0808208e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-31 22:14:47,127 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-31 22:14:47,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:47,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1504849555, now seen corresponding path program 2 times [2024-10-31 22:14:47,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:47,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544749302] [2024-10-31 22:14:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:47,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat