./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons3.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_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/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_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/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_ff25c4e5-b975-4db0-8bdd-16800b6c9800/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 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:13:36,421 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:13:36,501 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:13:36,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:13:36,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:13:36,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:13:36,537 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:13:36,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:13:36,538 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:13:36,539 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:13:36,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:13:36,540 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:13:36,541 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:13:36,541 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:13:36,542 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:13:36,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:13:36,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:13:36,549 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:13:36,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:13:36,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:13:36,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:13:36,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:13:36,551 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:13:36,551 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:13:36,552 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:13:36,552 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:13:36,552 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:13:36,553 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:13:36,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:13:36,553 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:13:36,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:13:36,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:13:36,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:13:36,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:13:36,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:36,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:13:36,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:13:36,556 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:13:36,556 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:13:36,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:13:36,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:13:36,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:13:36,557 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:13:36,557 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:13:36,558 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_ff25c4e5-b975-4db0-8bdd-16800b6c9800/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2024-10-31 22:13:36,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:13:36,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:13:36,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:13:36,871 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:13:36,872 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:13:36,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c Unable to find full path for "g++" [2024-10-31 22:13:38,953 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:13:39,144 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:13:39,145 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-31 22:13:39,154 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/data/f498918fd/bb08ed253f774179b4f37dc73abf3edf/FLAGdd07f6d0b [2024-10-31 22:13:39,171 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/data/f498918fd/bb08ed253f774179b4f37dc73abf3edf [2024-10-31 22:13:39,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:13:39,176 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:13:39,178 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:39,178 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:13:39,185 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:13:39,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:39" (1/1) ... [2024-10-31 22:13:39,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8c7fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39, skipping insertion in model container [2024-10-31 22:13:39,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:39" (1/1) ... [2024-10-31 22:13:39,226 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:13:39,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:39,481 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:13:39,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:39,538 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:13:39,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39 WrapperNode [2024-10-31 22:13:39,539 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:39,540 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:39,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:13:39,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:13:39,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39" (1/1) ... [2024-10-31 22:13:39,562 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39" (1/1) ... [2024-10-31 22:13:39,622 INFO L138 Inliner]: procedures = 25, calls = 54, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 278 [2024-10-31 22:13:39,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:39,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:13:39,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:13:39,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:13:39,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39" (1/1) ... [2024-10-31 22:13:39,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39" (1/1) ... [2024-10-31 22:13:39,645 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39" (1/1) ... [2024-10-31 22:13:39,685 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-31 22:13:39,685 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39" (1/1) ... [2024-10-31 22:13:39,685 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39" (1/1) ... [2024-10-31 22:13:39,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39" (1/1) ... [2024-10-31 22:13:39,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39" (1/1) ... [2024-10-31 22:13:39,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39" (1/1) ... [2024-10-31 22:13:39,719 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39" (1/1) ... [2024-10-31 22:13:39,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:13:39,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:13:39,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:13:39,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:13:39,727 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39" (1/1) ... [2024-10-31 22:13:39,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:39,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:39,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:13:39,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:13:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:13:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:13:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:13:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:13:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:13:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:13:39,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:13:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-31 22:13:39,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-31 22:13:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:13:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:13:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:13:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:13:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:13:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:13:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:13:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:13:39,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:13:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:13:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:13:39,799 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 22:13:39,940 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:13:39,942 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:13:40,555 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:13:40,555 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:13:40,964 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:13:40,965 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-31 22:13:40,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:40 BoogieIcfgContainer [2024-10-31 22:13:40,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:13:40,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:13:40,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:13:40,974 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:13:40,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:13:39" (1/3) ... [2024-10-31 22:13:40,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28db03af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:40, skipping insertion in model container [2024-10-31 22:13:40,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:39" (2/3) ... [2024-10-31 22:13:40,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28db03af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:40, skipping insertion in model container [2024-10-31 22:13:40,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:40" (3/3) ... [2024-10-31 22:13:40,978 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2024-10-31 22:13:40,999 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:13:41,000 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-10-31 22:13:41,001 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:13:41,091 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-31 22:13:41,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 182 flow [2024-10-31 22:13:41,217 INFO L124 PetriNetUnfolderBase]: 6/73 cut-off events. [2024-10-31 22:13:41,217 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:13:41,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 73 events. 6/73 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 248 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-10-31 22:13:41,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 77 transitions, 182 flow [2024-10-31 22:13:41,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 71 transitions, 163 flow [2024-10-31 22:13:41,273 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:13:41,289 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;@3742c5c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:13:41,290 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-10-31 22:13:41,297 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:13:41,298 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:13:41,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:13:41,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:41,299 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:13:41,299 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-31 22:13:41,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:41,313 INFO L85 PathProgramCache]: Analyzing trace with hash 815461, now seen corresponding path program 1 times [2024-10-31 22:13:41,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:41,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994666862] [2024-10-31 22:13:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:41,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:41,679 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 22:13:41,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:41,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994666862] [2024-10-31 22:13:41,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994666862] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:41,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:41,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:13:41,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121921746] [2024-10-31 22:13:41,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:41,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:13:41,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:41,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:13:41,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:13:41,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-31 22:13:41,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 22:13:41,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:41,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-31 22:13:41,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:47,220 INFO L124 PetriNetUnfolderBase]: 31498/43058 cut-off events. [2024-10-31 22:13:47,221 INFO L125 PetriNetUnfolderBase]: For 1888/1888 co-relation queries the response was YES. [2024-10-31 22:13:47,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85356 conditions, 43058 events. 31498/43058 cut-off events. For 1888/1888 co-relation queries the response was YES. Maximal size of possible extension queue 2747. Compared 293362 event pairs, 25002 based on Foata normal form. 2/28231 useless extension candidates. Maximal degree in co-relation 80473. Up to 40235 conditions per place. [2024-10-31 22:13:47,564 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 50 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2024-10-31 22:13:47,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 281 flow [2024-10-31 22:13:47,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:13:47,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:13:47,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-10-31 22:13:47,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4707792207792208 [2024-10-31 22:13:47,583 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 163 flow. Second operand 4 states and 145 transitions. [2024-10-31 22:13:47,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 281 flow [2024-10-31 22:13:47,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 268 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-31 22:13:47,940 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 202 flow [2024-10-31 22:13:47,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2024-10-31 22:13:47,948 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -5 predicate places. [2024-10-31 22:13:47,948 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 202 flow [2024-10-31 22:13:47,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 22:13:47,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:47,950 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:13:47,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:13:47,950 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-31 22:13:47,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1475571405, now seen corresponding path program 1 times [2024-10-31 22:13:47,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:47,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441463968] [2024-10-31 22:13:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:47,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:48,194 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 22:13:48,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:48,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441463968] [2024-10-31 22:13:48,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441463968] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:48,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269626937] [2024-10-31 22:13:48,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:48,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:48,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:48,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:48,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:13:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:48,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:13:48,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:48,374 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 22:13:48,374 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:13:48,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269626937] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:48,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:13:48,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:13:48,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954020722] [2024-10-31 22:13:48,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:48,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:13:48,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:48,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:13:48,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:13:48,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-31 22:13:48,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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 22:13:48,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:48,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-31 22:13:48,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:52,873 INFO L124 PetriNetUnfolderBase]: 31498/43056 cut-off events. [2024-10-31 22:13:52,873 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2024-10-31 22:13:52,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84756 conditions, 43056 events. 31498/43056 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 2747. Compared 293497 event pairs, 25002 based on Foata normal form. 2/28232 useless extension candidates. Maximal degree in co-relation 84706. Up to 40225 conditions per place. [2024-10-31 22:13:53,214 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 43 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2024-10-31 22:13:53,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 304 flow [2024-10-31 22:13:53,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:13:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:13:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-10-31 22:13:53,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-10-31 22:13:53,218 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 202 flow. Second operand 6 states and 177 transitions. [2024-10-31 22:13:53,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 304 flow [2024-10-31 22:13:53,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 71 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:13:53,222 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 218 flow [2024-10-31 22:13:53,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2024-10-31 22:13:53,224 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-10-31 22:13:53,224 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 218 flow [2024-10-31 22:13:53,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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 22:13:53,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:53,225 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:13:53,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:13:53,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-10-31 22:13:53,428 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-31 22:13:53,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:53,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1501927541, now seen corresponding path program 1 times [2024-10-31 22:13:53,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:53,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46548665] [2024-10-31 22:13:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:53,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:53,781 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 22:13:53,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:53,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46548665] [2024-10-31 22:13:53,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46548665] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:53,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506703615] [2024-10-31 22:13:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:53,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:53,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:53,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:53,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:13:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:53,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:13:53,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:53,922 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 22:13:53,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:53,982 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 22:13:53,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506703615] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:53,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:53,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:13:53,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809652176] [2024-10-31 22:13:53,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:53,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:13:53,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:53,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:13:53,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:13:54,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-31 22:13:54,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 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 22:13:54,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:54,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-31 22:13:54,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:57,573 INFO L124 PetriNetUnfolderBase]: 31504/43080 cut-off events. [2024-10-31 22:13:57,573 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2024-10-31 22:13:57,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84850 conditions, 43080 events. 31504/43080 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 2747. Compared 293918 event pairs, 25002 based on Foata normal form. 6/28259 useless extension candidates. Maximal degree in co-relation 84708. Up to 40236 conditions per place. [2024-10-31 22:13:57,866 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 48 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2024-10-31 22:13:57,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 478 flow [2024-10-31 22:13:57,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:13:57,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:13:57,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2024-10-31 22:13:57,873 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36233766233766235 [2024-10-31 22:13:57,873 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 218 flow. Second operand 10 states and 279 transitions. [2024-10-31 22:13:57,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 478 flow [2024-10-31 22:13:57,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 420 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-31 22:13:57,879 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 358 flow [2024-10-31 22:13:57,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2024-10-31 22:13:57,880 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-31 22:13:57,881 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 358 flow [2024-10-31 22:13:57,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 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 22:13:57,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:57,882 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:57,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:13:58,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:58,087 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-31 22:13:58,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:58,088 INFO L85 PathProgramCache]: Analyzing trace with hash 271305435, now seen corresponding path program 1 times [2024-10-31 22:13:58,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:58,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011476978] [2024-10-31 22:13:58,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:58,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:58,367 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 22:13:58,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:58,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011476978] [2024-10-31 22:13:58,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011476978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:58,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:58,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:13:58,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593541438] [2024-10-31 22:13:58,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:58,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:13:58,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:58,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:13:58,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:13:58,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-31 22:13:58,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 22:13:58,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:58,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-31 22:13:58,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:03,028 INFO L124 PetriNetUnfolderBase]: 35298/48559 cut-off events. [2024-10-31 22:14:03,028 INFO L125 PetriNetUnfolderBase]: For 472/472 co-relation queries the response was YES. [2024-10-31 22:14:03,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95727 conditions, 48559 events. 35298/48559 cut-off events. For 472/472 co-relation queries the response was YES. Maximal size of possible extension queue 2760. Compared 332762 event pairs, 28323 based on Foata normal form. 712/33932 useless extension candidates. Maximal degree in co-relation 95631. Up to 40251 conditions per place. [2024-10-31 22:14:03,417 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 108 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2024-10-31 22:14:03,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 131 transitions, 749 flow [2024-10-31 22:14:03,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:14:03,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:14:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-10-31 22:14:03,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5376623376623376 [2024-10-31 22:14:03,421 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 358 flow. Second operand 5 states and 207 transitions. [2024-10-31 22:14:03,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 131 transitions, 749 flow [2024-10-31 22:14:03,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 131 transitions, 715 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-31 22:14:03,428 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 373 flow [2024-10-31 22:14:03,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=373, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2024-10-31 22:14:03,430 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-31 22:14:03,430 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 373 flow [2024-10-31 22:14:03,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:03,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:03,431 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:03,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:14:03,432 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-31 22:14:03,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:03,433 INFO L85 PathProgramCache]: Analyzing trace with hash -151225108, now seen corresponding path program 1 times [2024-10-31 22:14:03,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:03,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637238314] [2024-10-31 22:14:03,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:03,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:03,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:03,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637238314] [2024-10-31 22:14:03,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637238314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:03,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:03,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:14:03,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331587968] [2024-10-31 22:14:03,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:03,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:14:03,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:03,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:14:03,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:14:03,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-31 22:14:03,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 373 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:03,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:03,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-31 22:14:03,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:08,305 INFO L124 PetriNetUnfolderBase]: 32734/46008 cut-off events. [2024-10-31 22:14:08,306 INFO L125 PetriNetUnfolderBase]: For 2790/2790 co-relation queries the response was YES. [2024-10-31 22:14:08,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95277 conditions, 46008 events. 32734/46008 cut-off events. For 2790/2790 co-relation queries the response was YES. Maximal size of possible extension queue 2350. Compared 317361 event pairs, 11055 based on Foata normal form. 751/32668 useless extension candidates. Maximal degree in co-relation 95182. Up to 32693 conditions per place. [2024-10-31 22:14:08,623 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 99 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2024-10-31 22:14:08,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 119 transitions, 645 flow [2024-10-31 22:14:08,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:14:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:14:08,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-10-31 22:14:08,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.645021645021645 [2024-10-31 22:14:08,625 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 373 flow. Second operand 3 states and 149 transitions. [2024-10-31 22:14:08,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 119 transitions, 645 flow [2024-10-31 22:14:08,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 641 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-31 22:14:08,633 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 383 flow [2024-10-31 22:14:08,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-10-31 22:14:08,634 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2024-10-31 22:14:08,634 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 383 flow [2024-10-31 22:14:08,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:08,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:08,635 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:08,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:14:08,636 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-31 22:14:08,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:08,636 INFO L85 PathProgramCache]: Analyzing trace with hash 714889257, now seen corresponding path program 1 times [2024-10-31 22:14:08,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:08,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688712960] [2024-10-31 22:14:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:08,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:08,819 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 22:14:08,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:08,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688712960] [2024-10-31 22:14:08,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688712960] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:08,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834259941] [2024-10-31 22:14:08,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:08,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:08,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:08,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:08,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25c4e5-b975-4db0-8bdd-16800b6c9800/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:14:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:08,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:14:08,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:08,981 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 22:14:08,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:14:08,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834259941] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:08,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:14:08,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-31 22:14:08,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930625] [2024-10-31 22:14:08,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:08,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:14:08,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:08,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:14:08,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:14:08,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-31 22:14:08,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:08,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:08,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-31 22:14:08,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand