./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array.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_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/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_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/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_accf22af-8b2c-4402-8e2c-42faaef6bca0/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 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:10:24,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:10:24,338 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:10:24,345 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:10:24,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:10:24,381 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:10:24,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:10:24,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:10:24,385 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:10:24,386 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:10:24,388 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:10:24,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:10:24,390 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:10:24,390 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:10:24,390 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:10:24,391 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:10:24,391 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:10:24,392 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:10:24,395 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:10:24,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:10:24,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:10:24,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:10:24,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:10:24,399 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:10:24,399 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:10:24,399 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:10:24,400 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:10:24,401 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:10:24,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:10:24,402 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:10:24,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:10:24,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:10:24,404 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:10:24,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:10:24,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:24,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:10:24,406 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:10:24,406 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:10:24,406 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:10:24,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:10:24,407 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:10:24,407 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:10:24,408 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:10:24,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:10:24,408 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_accf22af-8b2c-4402-8e2c-42faaef6bca0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 [2024-10-31 22:10:24,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:10:24,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:10:24,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:10:24,749 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:10:24,749 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:10:24,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c Unable to find full path for "g++" [2024-10-31 22:10:26,908 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:10:27,116 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:10:27,116 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2024-10-31 22:10:27,127 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/data/e487e3c37/b6c3e2d24bd84836b1ad911e8c297693/FLAG357822b52 [2024-10-31 22:10:27,143 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/data/e487e3c37/b6c3e2d24bd84836b1ad911e8c297693 [2024-10-31 22:10:27,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:10:27,148 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:10:27,151 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:27,152 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:10:27,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:10:27,159 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15944231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27, skipping insertion in model container [2024-10-31 22:10:27,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,193 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:10:27,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:27,442 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:10:27,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:27,492 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:10:27,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27 WrapperNode [2024-10-31 22:10:27,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:27,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:27,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:10:27,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:10:27,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,536 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2024-10-31 22:10:27,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:27,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:10:27,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:10:27,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:10:27,549 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,553 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,569 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-31 22:10:27,570 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,570 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:10:27,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:10:27,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:10:27,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:10:27,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27" (1/1) ... [2024-10-31 22:10:27,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:27,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:27,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:27,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:10:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:10:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:10:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:10:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:10:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:10:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:10:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:10:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:10:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:10:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:10:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:10:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:10:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:10:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:10:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:10:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:10:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:10:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:10:27,689 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 22:10:27,814 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:10:27,817 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:28,170 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:10:28,170 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:28,429 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:28,429 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-31 22:10:28,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:28 BoogieIcfgContainer [2024-10-31 22:10:28,430 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:28,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:28,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:28,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:28,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:10:27" (1/3) ... [2024-10-31 22:10:28,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d5217d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:28, skipping insertion in model container [2024-10-31 22:10:28,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:27" (2/3) ... [2024-10-31 22:10:28,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d5217d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:28, skipping insertion in model container [2024-10-31 22:10:28,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:28" (3/3) ... [2024-10-31 22:10:28,440 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2024-10-31 22:10:28,480 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:28,481 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-31 22:10:28,481 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:10:28,566 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:10:28,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2024-10-31 22:10:28,676 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2024-10-31 22:10:28,676 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:10:28,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-31 22:10:28,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2024-10-31 22:10:28,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 42 transitions, 99 flow [2024-10-31 22:10:28,705 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:28,713 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;@73385c11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:28,713 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-31 22:10:28,719 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:28,719 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:10:28,719 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:28,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:28,722 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:10:28,723 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:28,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:28,729 INFO L85 PathProgramCache]: Analyzing trace with hash 463819, now seen corresponding path program 1 times [2024-10-31 22:10:28,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:28,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664038657] [2024-10-31 22:10:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:28,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:29,118 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 22:10:29,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:29,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664038657] [2024-10-31 22:10:29,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664038657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:29,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:29,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:29,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19987288] [2024-10-31 22:10:29,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:29,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:29,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:29,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:29,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:29,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-31 22:10:29,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 22:10:29,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:29,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-31 22:10:29,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:29,527 INFO L124 PetriNetUnfolderBase]: 431/838 cut-off events. [2024-10-31 22:10:29,528 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-10-31 22:10:29,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 838 events. 431/838 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4400 event pairs, 306 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 1370. Up to 625 conditions per place. [2024-10-31 22:10:29,544 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 25 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-10-31 22:10:29,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 163 flow [2024-10-31 22:10:29,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:29,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-10-31 22:10:29,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-10-31 22:10:29,561 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 99 flow. Second operand 4 states and 107 transitions. [2024-10-31 22:10:29,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 163 flow [2024-10-31 22:10:29,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 154 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:10:29,572 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2024-10-31 22:10:29,574 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-31 22:10:29,580 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-10-31 22:10:29,581 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2024-10-31 22:10:29,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 22:10:29,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:29,582 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:10:29,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:10:29,583 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:29,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:29,584 INFO L85 PathProgramCache]: Analyzing trace with hash 933185111, now seen corresponding path program 1 times [2024-10-31 22:10:29,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:29,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770783444] [2024-10-31 22:10:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:29,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:29,790 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 22:10:29,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:29,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770783444] [2024-10-31 22:10:29,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770783444] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:29,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656648317] [2024-10-31 22:10:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:29,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:29,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:29,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:29,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:10:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:29,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:10:29,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:30,001 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 22:10:30,001 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:10:30,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656648317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:30,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:10:30,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:10:30,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134968094] [2024-10-31 22:10:30,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:30,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:10:30,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:30,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:30,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:10:30,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-31 22:10:30,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 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 22:10:30,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:30,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-31 22:10:30,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:30,285 INFO L124 PetriNetUnfolderBase]: 431/837 cut-off events. [2024-10-31 22:10:30,285 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-31 22:10:30,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 837 events. 431/837 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4413 event pairs, 306 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 1488. Up to 620 conditions per place. [2024-10-31 22:10:30,293 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 21 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-10-31 22:10:30,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 171 flow [2024-10-31 22:10:30,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:10:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:10:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-10-31 22:10:30,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-10-31 22:10:30,297 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 6 states and 143 transitions. [2024-10-31 22:10:30,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 171 flow [2024-10-31 22:10:30,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:30,300 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 126 flow [2024-10-31 22:10:30,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-10-31 22:10:30,304 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2024-10-31 22:10:30,304 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 126 flow [2024-10-31 22:10:30,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 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 22:10:30,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:30,305 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:10:30,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:10:30,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:30,506 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:30,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:30,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1136032173, now seen corresponding path program 1 times [2024-10-31 22:10:30,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:30,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489559139] [2024-10-31 22:10:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:30,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:30,606 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 22:10:30,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:30,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489559139] [2024-10-31 22:10:30,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489559139] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:30,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370143358] [2024-10-31 22:10:30,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:30,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:30,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:30,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:30,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:10:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:30,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:10:30,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:30,736 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 22:10:30,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:30,790 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 22:10:30,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370143358] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:30,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:30,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:10:30,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036249605] [2024-10-31 22:10:30,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:30,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:10:30,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:30,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:10:30,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:10:30,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-31 22:10:30,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 126 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 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 22:10:30,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:30,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-31 22:10:30,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:31,096 INFO L124 PetriNetUnfolderBase]: 434/849 cut-off events. [2024-10-31 22:10:31,097 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-31 22:10:31,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1559 conditions, 849 events. 434/849 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4507 event pairs, 306 based on Foata normal form. 3/781 useless extension candidates. Maximal degree in co-relation 1489. Up to 627 conditions per place. [2024-10-31 22:10:31,105 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-10-31 22:10:31,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 254 flow [2024-10-31 22:10:31,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:10:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:10:31,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-10-31 22:10:31,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-10-31 22:10:31,113 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 126 flow. Second operand 10 states and 230 transitions. [2024-10-31 22:10:31,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 254 flow [2024-10-31 22:10:31,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 208 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-31 22:10:31,118 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 178 flow [2024-10-31 22:10:31,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-10-31 22:10:31,119 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2024-10-31 22:10:31,119 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 178 flow [2024-10-31 22:10:31,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 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 22:10:31,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:31,121 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:31,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:31,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:31,326 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:31,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:31,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1306776746, now seen corresponding path program 1 times [2024-10-31 22:10:31,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:31,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804516286] [2024-10-31 22:10:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:31,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:31,405 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 22:10:31,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:31,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804516286] [2024-10-31 22:10:31,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804516286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:31,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:31,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:31,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272416692] [2024-10-31 22:10:31,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:31,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:31,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:31,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:31,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:31,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-31 22:10:31,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 22:10:31,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:31,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-31 22:10:31,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:31,797 INFO L124 PetriNetUnfolderBase]: 1064/1851 cut-off events. [2024-10-31 22:10:31,797 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-10-31 22:10:31,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3497 conditions, 1851 events. 1064/1851 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10212 event pairs, 449 based on Foata normal form. 42/1791 useless extension candidates. Maximal degree in co-relation 3463. Up to 1096 conditions per place. [2024-10-31 22:10:31,812 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 65 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2024-10-31 22:10:31,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 382 flow [2024-10-31 22:10:31,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:31,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-10-31 22:10:31,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6968085106382979 [2024-10-31 22:10:31,814 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 178 flow. Second operand 4 states and 131 transitions. [2024-10-31 22:10:31,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 382 flow [2024-10-31 22:10:31,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 371 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:31,821 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 196 flow [2024-10-31 22:10:31,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-10-31 22:10:31,822 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2024-10-31 22:10:31,822 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 196 flow [2024-10-31 22:10:31,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 22:10:31,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:31,822 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:31,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:10:31,823 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:31,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:31,824 INFO L85 PathProgramCache]: Analyzing trace with hash -800019145, now seen corresponding path program 1 times [2024-10-31 22:10:31,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:31,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635859801] [2024-10-31 22:10:31,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:31,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:31,925 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 22:10:31,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:31,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635859801] [2024-10-31 22:10:31,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635859801] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:31,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:31,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:31,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620692024] [2024-10-31 22:10:31,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:31,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:31,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:31,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:31,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:31,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-31 22:10:31,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:10:31,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:31,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-31 22:10:31,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:32,442 INFO L124 PetriNetUnfolderBase]: 1708/2800 cut-off events. [2024-10-31 22:10:32,443 INFO L125 PetriNetUnfolderBase]: For 768/1056 co-relation queries the response was YES. [2024-10-31 22:10:32,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6064 conditions, 2800 events. 1708/2800 cut-off events. For 768/1056 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15501 event pairs, 787 based on Foata normal form. 161/2844 useless extension candidates. Maximal degree in co-relation 6028. Up to 1698 conditions per place. [2024-10-31 22:10:32,469 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 69 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2024-10-31 22:10:32,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 438 flow [2024-10-31 22:10:32,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:32,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-10-31 22:10:32,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6861702127659575 [2024-10-31 22:10:32,471 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 196 flow. Second operand 4 states and 129 transitions. [2024-10-31 22:10:32,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 438 flow [2024-10-31 22:10:32,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:32,476 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 222 flow [2024-10-31 22:10:32,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-10-31 22:10:32,479 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2024-10-31 22:10:32,479 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 222 flow [2024-10-31 22:10:32,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:10:32,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:32,480 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:32,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:10:32,480 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:32,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:32,481 INFO L85 PathProgramCache]: Analyzing trace with hash 391459851, now seen corresponding path program 1 times [2024-10-31 22:10:32,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:32,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403635245] [2024-10-31 22:10:32,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:32,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:32,568 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 22:10:32,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:32,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403635245] [2024-10-31 22:10:32,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403635245] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:32,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:32,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:32,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386519714] [2024-10-31 22:10:32,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:32,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:32,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:32,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:32,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:32,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2024-10-31 22:10:32,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 22:10:32,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:32,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2024-10-31 22:10:32,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:32,887 INFO L124 PetriNetUnfolderBase]: 1059/1900 cut-off events. [2024-10-31 22:10:32,888 INFO L125 PetriNetUnfolderBase]: For 779/1073 co-relation queries the response was YES. [2024-10-31 22:10:32,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4286 conditions, 1900 events. 1059/1900 cut-off events. For 779/1073 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10945 event pairs, 724 based on Foata normal form. 104/1880 useless extension candidates. Maximal degree in co-relation 4255. Up to 1469 conditions per place. [2024-10-31 22:10:32,903 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-31 22:10:32,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 297 flow [2024-10-31 22:10:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:32,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:32,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-10-31 22:10:32,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-10-31 22:10:32,905 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 222 flow. Second operand 3 states and 90 transitions. [2024-10-31 22:10:32,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 297 flow [2024-10-31 22:10:32,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:32,911 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 220 flow [2024-10-31 22:10:32,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-10-31 22:10:32,913 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2024-10-31 22:10:32,914 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 220 flow [2024-10-31 22:10:32,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 22:10:32,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:32,915 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:32,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:10:32,915 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:32,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash -620814593, now seen corresponding path program 1 times [2024-10-31 22:10:32,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:32,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871227283] [2024-10-31 22:10:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:32,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:33,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:10:33,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:33,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871227283] [2024-10-31 22:10:33,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871227283] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:33,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:33,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:10:33,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467510870] [2024-10-31 22:10:33,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:33,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:33,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:33,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:33,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:33,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-31 22:10:33,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:33,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:33,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-31 22:10:33,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:33,494 INFO L124 PetriNetUnfolderBase]: 1495/2292 cut-off events. [2024-10-31 22:10:33,495 INFO L125 PetriNetUnfolderBase]: For 924/1368 co-relation queries the response was YES. [2024-10-31 22:10:33,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5396 conditions, 2292 events. 1495/2292 cut-off events. For 924/1368 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11475 event pairs, 388 based on Foata normal form. 232/2400 useless extension candidates. Maximal degree in co-relation 5372. Up to 786 conditions per place. [2024-10-31 22:10:33,516 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 63 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2024-10-31 22:10:33,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 464 flow [2024-10-31 22:10:33,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:10:33,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:10:33,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-10-31 22:10:33,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2024-10-31 22:10:33,519 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 220 flow. Second operand 5 states and 139 transitions. [2024-10-31 22:10:33,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 464 flow [2024-10-31 22:10:33,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:33,526 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 230 flow [2024-10-31 22:10:33,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-10-31 22:10:33,527 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2024-10-31 22:10:33,528 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 230 flow [2024-10-31 22:10:33,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:33,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:33,529 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-31 22:10:33,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:10:33,530 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:33,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:33,530 INFO L85 PathProgramCache]: Analyzing trace with hash 957423199, now seen corresponding path program 2 times [2024-10-31 22:10:33,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:33,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958697040] [2024-10-31 22:10:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:33,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:33,798 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 22:10:33,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:33,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958697040] [2024-10-31 22:10:33,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958697040] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:33,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005184423] [2024-10-31 22:10:33,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:10:33,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:33,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:33,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:33,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:10:33,885 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:10:33,886 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:33,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:10:33,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:33,964 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 22:10:33,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:34,015 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 22:10:34,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005184423] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:34,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:34,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-31 22:10:34,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120009882] [2024-10-31 22:10:34,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:34,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:10:34,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:34,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:10:34,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:10:34,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-31 22:10:34,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 230 flow. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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 22:10:34,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:34,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-31 22:10:34,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:34,548 INFO L124 PetriNetUnfolderBase]: 1060/1831 cut-off events. [2024-10-31 22:10:34,549 INFO L125 PetriNetUnfolderBase]: For 805/1099 co-relation queries the response was YES. [2024-10-31 22:10:34,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4407 conditions, 1831 events. 1060/1831 cut-off events. For 805/1099 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10048 event pairs, 724 based on Foata normal form. 105/1885 useless extension candidates. Maximal degree in co-relation 4368. Up to 1461 conditions per place. [2024-10-31 22:10:34,563 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2024-10-31 22:10:34,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 59 transitions, 322 flow [2024-10-31 22:10:34,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:10:34,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-31 22:10:34,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 306 transitions. [2024-10-31 22:10:34,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46504559270516715 [2024-10-31 22:10:34,566 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 230 flow. Second operand 14 states and 306 transitions. [2024-10-31 22:10:34,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 59 transitions, 322 flow [2024-10-31 22:10:34,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 59 transitions, 292 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-10-31 22:10:34,571 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 244 flow [2024-10-31 22:10:34,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=244, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2024-10-31 22:10:34,572 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 23 predicate places. [2024-10-31 22:10:34,572 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 244 flow [2024-10-31 22:10:34,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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 22:10:34,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:34,573 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:34,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:34,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:34,778 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:34,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:34,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2065382697, now seen corresponding path program 1 times [2024-10-31 22:10:34,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:34,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518653849] [2024-10-31 22:10:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:34,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:34,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:34,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518653849] [2024-10-31 22:10:34,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518653849] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:34,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344428893] [2024-10-31 22:10:34,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:34,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:34,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:34,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:34,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:10:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:35,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:10:35,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:10:35,184 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:10:35,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344428893] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:35,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:10:35,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-10-31 22:10:35,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907894016] [2024-10-31 22:10:35,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:35,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:10:35,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:35,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:35,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:10:35,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-31 22:10:35,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 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 22:10:35,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:35,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-31 22:10:35,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:35,646 INFO L124 PetriNetUnfolderBase]: 1793/2592 cut-off events. [2024-10-31 22:10:35,646 INFO L125 PetriNetUnfolderBase]: For 1064/1583 co-relation queries the response was YES. [2024-10-31 22:10:35,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6207 conditions, 2592 events. 1793/2592 cut-off events. For 1064/1583 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12167 event pairs, 556 based on Foata normal form. 178/2563 useless extension candidates. Maximal degree in co-relation 6117. Up to 1163 conditions per place. [2024-10-31 22:10:35,669 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 62 selfloop transitions, 11 changer transitions 3/90 dead transitions. [2024-10-31 22:10:35,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 502 flow [2024-10-31 22:10:35,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:10:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:10:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-10-31 22:10:35,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-10-31 22:10:35,671 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 244 flow. Second operand 6 states and 153 transitions. [2024-10-31 22:10:35,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 502 flow [2024-10-31 22:10:35,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 90 transitions, 434 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-31 22:10:35,676 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 214 flow [2024-10-31 22:10:35,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-10-31 22:10:35,677 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2024-10-31 22:10:35,679 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 214 flow [2024-10-31 22:10:35,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 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 22:10:35,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:35,680 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:35,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:10:35,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-31 22:10:35,881 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:35,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:35,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1701806038, now seen corresponding path program 1 times [2024-10-31 22:10:35,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:35,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075214921] [2024-10-31 22:10:35,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:35,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:35,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:10:35,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:35,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075214921] [2024-10-31 22:10:35,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075214921] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:35,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904451860] [2024-10-31 22:10:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:35,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:35,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:35,981 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:35,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:10:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:36,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:10:36,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:36,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:36,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904451860] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:36,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:36,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-31 22:10:36,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321203768] [2024-10-31 22:10:36,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:36,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-31 22:10:36,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:36,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-31 22:10:36,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:10:36,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-31 22:10:36,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 214 flow. Second operand has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 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 22:10:36,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:36,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-31 22:10:36,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:38,118 INFO L124 PetriNetUnfolderBase]: 3700/5762 cut-off events. [2024-10-31 22:10:38,118 INFO L125 PetriNetUnfolderBase]: For 4009/4689 co-relation queries the response was YES. [2024-10-31 22:10:38,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15178 conditions, 5762 events. 3700/5762 cut-off events. For 4009/4689 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 33959 event pairs, 618 based on Foata normal form. 340/5977 useless extension candidates. Maximal degree in co-relation 8930. Up to 860 conditions per place. [2024-10-31 22:10:38,165 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 154 selfloop transitions, 25 changer transitions 6/197 dead transitions. [2024-10-31 22:10:38,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 197 transitions, 1080 flow [2024-10-31 22:10:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:10:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-31 22:10:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 361 transitions. [2024-10-31 22:10:38,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5486322188449848 [2024-10-31 22:10:38,168 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 214 flow. Second operand 14 states and 361 transitions. [2024-10-31 22:10:38,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 197 transitions, 1080 flow [2024-10-31 22:10:38,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 197 transitions, 1063 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:10:38,187 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 277 flow [2024-10-31 22:10:38,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=277, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-10-31 22:10:38,188 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2024-10-31 22:10:38,189 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 277 flow [2024-10-31 22:10:38,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 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 22:10:38,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:38,190 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:38,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:10:38,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 22:10:38,394 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:38,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:38,394 INFO L85 PathProgramCache]: Analyzing trace with hash 746214022, now seen corresponding path program 1 times [2024-10-31 22:10:38,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:38,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689306604] [2024-10-31 22:10:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:38,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:10:38,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:38,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689306604] [2024-10-31 22:10:38,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689306604] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:38,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93949294] [2024-10-31 22:10:38,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:38,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:38,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:38,572 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:38,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:10:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:38,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:10:38,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:10:38,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:10:39,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93949294] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:39,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:39,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-10-31 22:10:39,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574061525] [2024-10-31 22:10:39,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:39,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-31 22:10:39,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:39,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-31 22:10:39,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:10:39,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-31 22:10:39,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 277 flow. Second operand has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 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 22:10:39,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:39,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-31 22:10:39,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:40,061 INFO L124 PetriNetUnfolderBase]: 2424/3884 cut-off events. [2024-10-31 22:10:40,062 INFO L125 PetriNetUnfolderBase]: For 3401/3651 co-relation queries the response was YES. [2024-10-31 22:10:40,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10825 conditions, 3884 events. 2424/3884 cut-off events. For 3401/3651 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 21603 event pairs, 1687 based on Foata normal form. 111/3901 useless extension candidates. Maximal degree in co-relation 7079. Up to 2669 conditions per place. [2024-10-31 22:10:40,092 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 30 selfloop transitions, 12 changer transitions 35/92 dead transitions. [2024-10-31 22:10:40,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 92 transitions, 541 flow [2024-10-31 22:10:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:10:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:10:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-10-31 22:10:40,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-10-31 22:10:40,094 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 277 flow. Second operand 8 states and 203 transitions. [2024-10-31 22:10:40,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 92 transitions, 541 flow [2024-10-31 22:10:40,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 497 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-10-31 22:10:40,104 INFO L231 Difference]: Finished difference. Result has 76 places, 57 transitions, 241 flow [2024-10-31 22:10:40,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=241, PETRI_PLACES=76, PETRI_TRANSITIONS=57} [2024-10-31 22:10:40,105 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 28 predicate places. [2024-10-31 22:10:40,105 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions, 241 flow [2024-10-31 22:10:40,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 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 22:10:40,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:40,106 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:40,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 22:10:40,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:40,311 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:40,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:40,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1009363834, now seen corresponding path program 1 times [2024-10-31 22:10:40,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:40,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117446139] [2024-10-31 22:10:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:40,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:10:40,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117446139] [2024-10-31 22:10:40,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117446139] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313863863] [2024-10-31 22:10:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:40,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:40,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:40,395 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:40,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:10:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:40,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:10:40,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:10:40,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:10:40,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313863863] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:40,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:40,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-31 22:10:40,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322568109] [2024-10-31 22:10:40,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:40,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:10:40,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:40,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:10:40,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:10:40,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-31 22:10:40,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 241 flow. Second operand has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 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 22:10:40,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:40,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-31 22:10:40,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:41,672 INFO L124 PetriNetUnfolderBase]: 4141/6600 cut-off events. [2024-10-31 22:10:41,672 INFO L125 PetriNetUnfolderBase]: For 6142/7245 co-relation queries the response was YES. [2024-10-31 22:10:41,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17879 conditions, 6600 events. 4141/6600 cut-off events. For 6142/7245 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 37380 event pairs, 847 based on Foata normal form. 536/7107 useless extension candidates. Maximal degree in co-relation 17803. Up to 2281 conditions per place. [2024-10-31 22:10:41,723 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 172 selfloop transitions, 13 changer transitions 0/198 dead transitions. [2024-10-31 22:10:41,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 198 transitions, 1149 flow [2024-10-31 22:10:41,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:10:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:10:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2024-10-31 22:10:41,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6978723404255319 [2024-10-31 22:10:41,725 INFO L175 Difference]: Start difference. First operand has 76 places, 57 transitions, 241 flow. Second operand 10 states and 328 transitions. [2024-10-31 22:10:41,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 198 transitions, 1149 flow [2024-10-31 22:10:41,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 198 transitions, 1070 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-10-31 22:10:41,741 INFO L231 Difference]: Finished difference. Result has 74 places, 66 transitions, 280 flow [2024-10-31 22:10:41,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=280, PETRI_PLACES=74, PETRI_TRANSITIONS=66} [2024-10-31 22:10:41,742 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2024-10-31 22:10:41,742 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 280 flow [2024-10-31 22:10:41,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 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 22:10:41,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:41,743 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:41,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 22:10:41,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:41,944 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:41,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:41,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1426246022, now seen corresponding path program 2 times [2024-10-31 22:10:41,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:41,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686250661] [2024-10-31 22:10:41,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:41,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:10:42,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:42,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686250661] [2024-10-31 22:10:42,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686250661] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:42,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144207417] [2024-10-31 22:10:42,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:10:42,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:42,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:42,120 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:42,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 22:10:42,209 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:10:42,210 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:42,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:10:42,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:10:42,251 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:10:42,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144207417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:42,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:10:42,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-31 22:10:42,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886983209] [2024-10-31 22:10:42,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:42,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:42,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:42,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:42,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:10:42,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-31 22:10:42,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 22:10:42,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:42,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-31 22:10:42,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:43,132 INFO L124 PetriNetUnfolderBase]: 5266/7805 cut-off events. [2024-10-31 22:10:43,132 INFO L125 PetriNetUnfolderBase]: For 9032/9612 co-relation queries the response was YES. [2024-10-31 22:10:43,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22553 conditions, 7805 events. 5266/7805 cut-off events. For 9032/9612 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 42922 event pairs, 685 based on Foata normal form. 250/7811 useless extension candidates. Maximal degree in co-relation 18274. Up to 3135 conditions per place. [2024-10-31 22:10:43,188 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 86 selfloop transitions, 7 changer transitions 0/107 dead transitions. [2024-10-31 22:10:43,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 678 flow [2024-10-31 22:10:43,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:43,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:43,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-10-31 22:10:43,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6329787234042553 [2024-10-31 22:10:43,190 INFO L175 Difference]: Start difference. First operand has 74 places, 66 transitions, 280 flow. Second operand 4 states and 119 transitions. [2024-10-31 22:10:43,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 678 flow [2024-10-31 22:10:43,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 649 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:43,284 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 279 flow [2024-10-31 22:10:43,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-10-31 22:10:43,288 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2024-10-31 22:10:43,289 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 279 flow [2024-10-31 22:10:43,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 22:10:43,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:43,289 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:43,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-31 22:10:43,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-31 22:10:43,490 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:43,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:43,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1263953229, now seen corresponding path program 1 times [2024-10-31 22:10:43,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:43,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385577173] [2024-10-31 22:10:43,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:43,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:10:43,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:43,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385577173] [2024-10-31 22:10:43,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385577173] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:43,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404415349] [2024-10-31 22:10:43,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:43,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:43,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:43,581 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:43,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-31 22:10:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:43,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:10:43,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:43,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:44,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404415349] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:44,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:44,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 24 [2024-10-31 22:10:44,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885873771] [2024-10-31 22:10:44,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:44,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-31 22:10:44,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-31 22:10:44,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2024-10-31 22:10:44,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-31 22:10:44,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 279 flow. Second operand has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 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 22:10:44,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:44,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-31 22:10:44,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:46,631 INFO L124 PetriNetUnfolderBase]: 10706/15992 cut-off events. [2024-10-31 22:10:46,631 INFO L125 PetriNetUnfolderBase]: For 19679/20883 co-relation queries the response was YES. [2024-10-31 22:10:46,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47510 conditions, 15992 events. 10706/15992 cut-off events. For 19679/20883 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 98983 event pairs, 2903 based on Foata normal form. 492/16449 useless extension candidates. Maximal degree in co-relation 38642. Up to 4284 conditions per place. [2024-10-31 22:10:46,726 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 223 selfloop transitions, 25 changer transitions 9/271 dead transitions. [2024-10-31 22:10:46,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 271 transitions, 1754 flow [2024-10-31 22:10:46,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 22:10:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-31 22:10:46,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 418 transitions. [2024-10-31 22:10:46,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.523153942428035 [2024-10-31 22:10:46,731 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 279 flow. Second operand 17 states and 418 transitions. [2024-10-31 22:10:46,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 271 transitions, 1754 flow [2024-10-31 22:10:46,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 271 transitions, 1724 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:10:46,796 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 366 flow [2024-10-31 22:10:46,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=366, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2024-10-31 22:10:46,797 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 42 predicate places. [2024-10-31 22:10:46,798 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 366 flow [2024-10-31 22:10:46,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 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 22:10:46,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:46,799 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:46,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-31 22:10:46,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:47,000 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:47,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:47,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1922283326, now seen corresponding path program 2 times [2024-10-31 22:10:47,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:47,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917569192] [2024-10-31 22:10:47,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:47,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:47,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:47,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917569192] [2024-10-31 22:10:47,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917569192] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78623262] [2024-10-31 22:10:47,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:10:47,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:47,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:47,388 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:47,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-31 22:10:47,599 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:10:47,600 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:47,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:10:47,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-31 22:10:47,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:47,754 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-31 22:10:47,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78623262] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:47,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:47,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 3, 3] total 17 [2024-10-31 22:10:47,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447627142] [2024-10-31 22:10:47,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:47,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-31 22:10:47,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:47,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-31 22:10:47,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-10-31 22:10:47,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-31 22:10:47,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 366 flow. Second operand has 18 states, 18 states have (on average 17.22222222222222) internal successors, (310), 18 states have internal predecessors, (310), 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 22:10:47,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:47,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-31 22:10:47,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:51,068 INFO L124 PetriNetUnfolderBase]: 15477/22764 cut-off events. [2024-10-31 22:10:51,068 INFO L125 PetriNetUnfolderBase]: For 30203/32022 co-relation queries the response was YES. [2024-10-31 22:10:51,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70613 conditions, 22764 events. 15477/22764 cut-off events. For 30203/32022 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 146748 event pairs, 3203 based on Foata normal form. 418/23000 useless extension candidates. Maximal degree in co-relation 57436. Up to 4389 conditions per place. [2024-10-31 22:10:51,173 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 198 selfloop transitions, 32 changer transitions 12/256 dead transitions. [2024-10-31 22:10:51,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 256 transitions, 1715 flow [2024-10-31 22:10:51,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-31 22:10:51,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-31 22:10:51,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 420 transitions. [2024-10-31 22:10:51,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-10-31 22:10:51,176 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 366 flow. Second operand 18 states and 420 transitions. [2024-10-31 22:10:51,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 256 transitions, 1715 flow [2024-10-31 22:10:51,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 256 transitions, 1669 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-10-31 22:10:51,430 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 459 flow [2024-10-31 22:10:51,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=459, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-10-31 22:10:51,431 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 53 predicate places. [2024-10-31 22:10:51,431 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 459 flow [2024-10-31 22:10:51,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.22222222222222) internal successors, (310), 18 states have internal predecessors, (310), 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 22:10:51,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:51,432 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-31 22:10:51,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-31 22:10:51,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-31 22:10:51,633 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:10:51,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:51,633 INFO L85 PathProgramCache]: Analyzing trace with hash -796289542, now seen corresponding path program 2 times [2024-10-31 22:10:51,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:51,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721614005] [2024-10-31 22:10:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:51,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-31 22:10:51,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:51,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721614005] [2024-10-31 22:10:51,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721614005] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:51,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713032376] [2024-10-31 22:10:51,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:10:51,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:51,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:51,826 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:51,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-31 22:10:51,908 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:10:51,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:51,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:10:51,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-31 22:10:52,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-31 22:10:52,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713032376] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:52,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:52,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2024-10-31 22:10:52,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460727602] [2024-10-31 22:10:52,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:52,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:10:52,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:52,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:10:52,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:10:52,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-31 22:10:52,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 459 flow. Second operand has 13 states, 13 states have (on average 17.307692307692307) internal successors, (225), 13 states have internal predecessors, (225), 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 22:10:52,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:52,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-31 22:10:52,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:55,621 INFO L124 PetriNetUnfolderBase]: 16641/25323 cut-off events. [2024-10-31 22:10:55,621 INFO L125 PetriNetUnfolderBase]: For 51577/53294 co-relation queries the response was YES. [2024-10-31 22:10:55,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80589 conditions, 25323 events. 16641/25323 cut-off events. For 51577/53294 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 170334 event pairs, 3142 based on Foata normal form. 808/25948 useless extension candidates. Maximal degree in co-relation 61945. Up to 6453 conditions per place. [2024-10-31 22:10:55,701 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 0 selfloop transitions, 0 changer transitions 269/269 dead transitions. [2024-10-31 22:10:55,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 269 transitions, 1985 flow [2024-10-31 22:10:55,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 22:10:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-31 22:10:55,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 395 transitions. [2024-10-31 22:10:55,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5252659574468085 [2024-10-31 22:10:55,703 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 459 flow. Second operand 16 states and 395 transitions. [2024-10-31 22:10:55,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 269 transitions, 1985 flow [2024-10-31 22:10:55,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 269 transitions, 1922 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-10-31 22:10:55,920 INFO L231 Difference]: Finished difference. Result has 103 places, 0 transitions, 0 flow [2024-10-31 22:10:55,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=103, PETRI_TRANSITIONS=0} [2024-10-31 22:10:55,921 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 55 predicate places. [2024-10-31 22:10:55,921 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 0 transitions, 0 flow [2024-10-31 22:10:55,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.307692307692307) internal successors, (225), 13 states have internal predecessors, (225), 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 22:10:55,924 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2024-10-31 22:10:55,925 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-10-31 22:10:55,925 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-10-31 22:10:55,925 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-10-31 22:10:55,925 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-10-31 22:10:55,926 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-10-31 22:10:55,926 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-10-31 22:10:55,926 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-10-31 22:10:55,926 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2024-10-31 22:10:55,926 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2024-10-31 22:10:55,927 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2024-10-31 22:10:55,927 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-10-31 22:10:55,927 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-10-31 22:10:55,927 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-10-31 22:10:55,927 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-10-31 22:10:55,927 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-10-31 22:10:55,928 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-10-31 22:10:55,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-31 22:10:56,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-31 22:10:56,129 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:56,137 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-31 22:10:56,137 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:10:56,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:10:56 BasicIcfg [2024-10-31 22:10:56,144 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:10:56,145 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:10:56,145 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:10:56,145 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:10:56,146 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:28" (3/4) ... [2024-10-31 22:10:56,148 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-10-31 22:10:56,151 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-31 22:10:56,151 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-31 22:10:56,151 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-10-31 22:10:56,160 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 89 nodes and edges [2024-10-31 22:10:56,161 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-10-31 22:10:56,161 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-31 22:10:56,162 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-31 22:10:56,275 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/witness.graphml [2024-10-31 22:10:56,275 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/witness.yml [2024-10-31 22:10:56,275 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:10:56,276 INFO L158 Benchmark]: Toolchain (without parser) took 29128.76ms. Allocated memory was 167.8MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 128.6MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 556.6MB. Max. memory is 16.1GB. [2024-10-31 22:10:56,277 INFO L158 Benchmark]: CDTParser took 1.11ms. Allocated memory is still 125.8MB. Free memory was 91.9MB in the beginning and 91.9MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:10:56,277 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.27ms. Allocated memory is still 167.8MB. Free memory was 128.6MB in the beginning and 114.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-31 22:10:56,277 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.76ms. Allocated memory is still 167.8MB. Free memory was 114.7MB in the beginning and 113.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:10:56,277 INFO L158 Benchmark]: Boogie Preprocessor took 64.67ms. Allocated memory is still 167.8MB. Free memory was 113.4MB in the beginning and 110.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-31 22:10:56,278 INFO L158 Benchmark]: RCFGBuilder took 827.19ms. Allocated memory is still 167.8MB. Free memory was 110.5MB in the beginning and 71.5MB in the end (delta: 39.1MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-10-31 22:10:56,278 INFO L158 Benchmark]: TraceAbstraction took 27711.88ms. Allocated memory was 167.8MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 70.7MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 762.2MB. Max. memory is 16.1GB. [2024-10-31 22:10:56,279 INFO L158 Benchmark]: Witness Printer took 130.68ms. Allocated memory is still 2.5GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-31 22:10:56,281 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11ms. Allocated memory is still 125.8MB. Free memory was 91.9MB in the beginning and 91.9MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 342.27ms. Allocated memory is still 167.8MB. Free memory was 128.6MB in the beginning and 114.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.76ms. Allocated memory is still 167.8MB. Free memory was 114.7MB in the beginning and 113.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 64.67ms. Allocated memory is still 167.8MB. Free memory was 113.4MB in the beginning and 110.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 827.19ms. Allocated memory is still 167.8MB. Free memory was 110.5MB in the beginning and 71.5MB in the end (delta: 39.1MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 27711.88ms. Allocated memory was 167.8MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 70.7MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 762.2MB. Max. memory is 16.1GB. * Witness Printer took 130.68ms. Allocated memory is still 2.5GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 74 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 27.5s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1861 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1773 mSDsluCounter, 1234 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1211 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6107 IncrementalHoareTripleChecker+Invalid, 6162 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 23 mSDtfsCounter, 6107 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 512 GetRequests, 289 SyntacticMatches, 7 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=459occurred in iteration=15, InterpolantAutomatonStates: 143, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 462 NumberOfCodeBlocks, 405 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 591 ConstructedInterpolants, 0 QuantifiedInterpolants, 1927 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1137 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 35 InterpolantComputations, 8 PerfectInterpolantSequences, 272/460 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-31 22:10:56,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accf22af-8b2c-4402-8e2c-42faaef6bca0/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE