./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme --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 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:49:10,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:49:10,585 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:49:10,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:49:10,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:49:10,619 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:49:10,619 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:49:10,620 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:49:10,621 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:49:10,622 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:49:10,622 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:49:10,623 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:49:10,624 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:49:10,624 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:49:10,625 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:49:10,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:49:10,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:49:10,627 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:49:10,627 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:49:10,628 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:49:10,628 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:49:10,629 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:49:10,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:49:10,630 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:49:10,631 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:49:10,631 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:49:10,632 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:49:10,633 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:49:10,633 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:49:10,634 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:49:10,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:49:10,635 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:49:10,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:49:10,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:10,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:49:10,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:49:10,638 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:49:10,638 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:49:10,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:49:10,639 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:49:10,640 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:49:10,641 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:49:10,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:49:10,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:49:10,642 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_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f [2023-11-26 11:49:10,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:49:10,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:49:10,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:49:10,966 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:49:10,966 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:49:10,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2023-11-26 11:49:14,149 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:49:14,635 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:49:14,636 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2023-11-26 11:49:14,661 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/data/d781a0ded/d888e13d0b0547b4bac3f590d31bb161/FLAG3707e949e [2023-11-26 11:49:14,677 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/data/d781a0ded/d888e13d0b0547b4bac3f590d31bb161 [2023-11-26 11:49:14,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:49:14,688 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:49:14,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:14,691 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:49:14,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:49:14,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:14" (1/1) ... [2023-11-26 11:49:14,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cefd97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:14, skipping insertion in model container [2023-11-26 11:49:14,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:14" (1/1) ... [2023-11-26 11:49:14,797 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:49:15,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:15,826 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:49:15,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:16,078 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:16,083 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:16,089 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:49:16,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:16 WrapperNode [2023-11-26 11:49:16,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:16,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:16,091 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:49:16,091 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:49:16,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:16" (1/1) ... [2023-11-26 11:49:16,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:16" (1/1) ... [2023-11-26 11:49:16,278 INFO L138 Inliner]: procedures = 490, calls = 133, calls flagged for inlining = 48, calls inlined = 122, statements flattened = 1963 [2023-11-26 11:49:16,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:16,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:49:16,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:49:16,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:49:16,294 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:16" (1/1) ... [2023-11-26 11:49:16,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:16" (1/1) ... [2023-11-26 11:49:16,337 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:16" (1/1) ... [2023-11-26 11:49:16,435 INFO L175 MemorySlicer]: Split 287 memory accesses to 9 slices as follows [2, 8, 4, 12, 171, 2, 80, 2, 6]. 60 percent of accesses are in the largest equivalence class. The 28 initializations are split as follows [2, 2, 0, 4, 0, 0, 20, 0, 0]. The 97 writes are split as follows [0, 2, 2, 4, 63, 1, 20, 1, 4]. [2023-11-26 11:49:16,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:16" (1/1) ... [2023-11-26 11:49:16,435 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:16" (1/1) ... [2023-11-26 11:49:16,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:16" (1/1) ... [2023-11-26 11:49:16,536 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:16" (1/1) ... [2023-11-26 11:49:16,553 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:16" (1/1) ... [2023-11-26 11:49:16,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:16" (1/1) ... [2023-11-26 11:49:16,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:49:16,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:49:16,589 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:49:16,589 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:49:16,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:16" (1/1) ... [2023-11-26 11:49:16,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:16,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:16,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:49:16,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:49:16,673 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2023-11-26 11:49:16,673 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2023-11-26 11:49:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:49:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:49:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:49:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:49:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:49:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:49:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:49:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:49:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:49:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:49:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 11:49:16,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-26 11:49:16,676 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:49:16,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:49:16,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:49:16,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:49:16,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:49:16,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:49:16,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 11:49:16,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 11:49:16,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 11:49:16,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-26 11:49:16,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-26 11:49:16,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:49:16,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:49:16,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:49:16,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:49:16,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:49:16,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:49:16,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:49:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 11:49:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 11:49:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 11:49:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-26 11:49:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-26 11:49:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:49:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:49:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:49:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:49:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:49:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:49:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:49:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:49:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 11:49:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-26 11:49:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:49:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:49:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:49:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:49:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:49:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:49:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:49:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:49:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 11:49:16,687 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:49:17,098 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:49:17,100 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:49:19,494 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:49:21,257 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:49:21,257 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-26 11:49:21,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:21 BoogieIcfgContainer [2023-11-26 11:49:21,258 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:49:21,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:49:21,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:49:21,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:49:21,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:49:14" (1/3) ... [2023-11-26 11:49:21,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25404148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:21, skipping insertion in model container [2023-11-26 11:49:21,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:16" (2/3) ... [2023-11-26 11:49:21,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25404148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:21, skipping insertion in model container [2023-11-26 11:49:21,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:21" (3/3) ... [2023-11-26 11:49:21,267 INFO L112 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i [2023-11-26 11:49:21,277 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:49:21,288 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:49:21,288 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 90 error locations. [2023-11-26 11:49:21,288 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:49:21,448 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 11:49:21,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 374 transitions, 755 flow [2023-11-26 11:49:21,810 INFO L124 PetriNetUnfolderBase]: 47/688 cut-off events. [2023-11-26 11:49:21,810 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:49:21,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 688 events. 47/688 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3735 event pairs, 0 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 351. Up to 4 conditions per place. [2023-11-26 11:49:21,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 374 transitions, 755 flow [2023-11-26 11:49:21,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 374 transitions, 755 flow [2023-11-26 11:49:21,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:21,865 INFO L357 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, mHoare=true, 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;@2a76007e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:21,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 97 error locations. [2023-11-26 11:49:21,869 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:49:21,870 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 11:49:21,870 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:21,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:21,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:49:21,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-26 11:49:21,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:21,877 INFO L85 PathProgramCache]: Analyzing trace with hash 166318959, now seen corresponding path program 1 times [2023-11-26 11:49:21,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:21,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592392976] [2023-11-26 11:49:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:21,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:22,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:22,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592392976] [2023-11-26 11:49:22,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592392976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:22,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:22,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:49:22,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896616169] [2023-11-26 11:49:22,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:22,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:22,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:22,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:22,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:22,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 374 [2023-11-26 11:49:22,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 374 transitions, 755 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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) [2023-11-26 11:49:22,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:22,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 374 [2023-11-26 11:49:22,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:25,681 INFO L124 PetriNetUnfolderBase]: 4252/10555 cut-off events. [2023-11-26 11:49:25,682 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:49:25,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18474 conditions, 10555 events. 4252/10555 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 82608 event pairs, 3287 based on Foata normal form. 1/8710 useless extension candidates. Maximal degree in co-relation 17927. Up to 7909 conditions per place. [2023-11-26 11:49:25,761 INFO L140 encePairwiseOnDemand]: 370/374 looper letters, 227 selfloop transitions, 2 changer transitions 0/372 dead transitions. [2023-11-26 11:49:25,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 372 transitions, 1209 flow [2023-11-26 11:49:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:25,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2023-11-26 11:49:25,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-11-26 11:49:25,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2023-11-26 11:49:25,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2023-11-26 11:49:25,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:25,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2023-11-26 11:49:25,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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) [2023-11-26 11:49:25,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2023-11-26 11:49:25,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2023-11-26 11:49:25,812 INFO L175 Difference]: Start difference. First operand has 351 places, 374 transitions, 755 flow. Second operand 3 states and 660 transitions. [2023-11-26 11:49:25,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 372 transitions, 1209 flow [2023-11-26 11:49:25,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 372 transitions, 1209 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:25,833 INFO L231 Difference]: Finished difference. Result has 351 places, 372 transitions, 755 flow [2023-11-26 11:49:25,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=755, PETRI_PLACES=351, PETRI_TRANSITIONS=372} [2023-11-26 11:49:25,840 INFO L281 CegarLoopForPetriNet]: 351 programPoint places, 0 predicate places. [2023-11-26 11:49:25,840 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 372 transitions, 755 flow [2023-11-26 11:49:25,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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) [2023-11-26 11:49:25,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:25,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:25,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:49:25,842 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-26 11:49:25,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:25,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1293477606, now seen corresponding path program 1 times [2023-11-26 11:49:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:25,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754671018] [2023-11-26 11:49:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:25,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:26,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:26,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754671018] [2023-11-26 11:49:26,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754671018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:26,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:26,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:26,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722011264] [2023-11-26 11:49:26,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:26,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:49:26,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:26,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:49:26,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:49:26,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 374 [2023-11-26 11:49:26,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 372 transitions, 755 flow. Second operand has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-11-26 11:49:26,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:26,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 374 [2023-11-26 11:49:26,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:31,701 INFO L124 PetriNetUnfolderBase]: 8267/19721 cut-off events. [2023-11-26 11:49:31,701 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:49:31,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34859 conditions, 19721 events. 8267/19721 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 156203 event pairs, 3192 based on Foata normal form. 99/16595 useless extension candidates. Maximal degree in co-relation 34840. Up to 7683 conditions per place. [2023-11-26 11:49:31,846 INFO L140 encePairwiseOnDemand]: 352/374 looper letters, 433 selfloop transitions, 13 changer transitions 2/583 dead transitions. [2023-11-26 11:49:31,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 583 transitions, 2073 flow [2023-11-26 11:49:31,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:49:31,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:49:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1010 transitions. [2023-11-26 11:49:31,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6751336898395722 [2023-11-26 11:49:31,851 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1010 transitions. [2023-11-26 11:49:31,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1010 transitions. [2023-11-26 11:49:31,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:31,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1010 transitions. [2023-11-26 11:49:31,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.5) internal successors, (1010), 4 states have internal predecessors, (1010), 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) [2023-11-26 11:49:31,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 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) [2023-11-26 11:49:31,862 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 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) [2023-11-26 11:49:31,862 INFO L175 Difference]: Start difference. First operand has 351 places, 372 transitions, 755 flow. Second operand 4 states and 1010 transitions. [2023-11-26 11:49:31,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 583 transitions, 2073 flow [2023-11-26 11:49:31,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 583 transitions, 2069 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:31,880 INFO L231 Difference]: Finished difference. Result has 354 places, 376 transitions, 825 flow [2023-11-26 11:49:31,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=825, PETRI_PLACES=354, PETRI_TRANSITIONS=376} [2023-11-26 11:49:31,882 INFO L281 CegarLoopForPetriNet]: 351 programPoint places, 3 predicate places. [2023-11-26 11:49:31,882 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 376 transitions, 825 flow [2023-11-26 11:49:31,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-11-26 11:49:31,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:31,883 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:31,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:49:31,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-26 11:49:31,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:31,884 INFO L85 PathProgramCache]: Analyzing trace with hash 460408561, now seen corresponding path program 1 times [2023-11-26 11:49:31,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:31,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062841583] [2023-11-26 11:49:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:31,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:32,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:32,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062841583] [2023-11-26 11:49:32,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062841583] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:32,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350532712] [2023-11-26 11:49:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:32,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:32,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:32,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:32,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:49:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:32,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:49:32,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:32,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:32,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:32,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350532712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:32,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:49:32,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-26 11:49:32,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071742630] [2023-11-26 11:49:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:32,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:49:32,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:32,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:49:32,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:49:32,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 374 [2023-11-26 11:49:32,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 376 transitions, 825 flow. Second operand has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 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) [2023-11-26 11:49:32,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:32,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 374 [2023-11-26 11:49:32,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:37,940 INFO L124 PetriNetUnfolderBase]: 8333/19810 cut-off events. [2023-11-26 11:49:37,940 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-11-26 11:49:37,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35429 conditions, 19810 events. 8333/19810 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 156579 event pairs, 5738 based on Foata normal form. 1/16659 useless extension candidates. Maximal degree in co-relation 35393. Up to 13356 conditions per place. [2023-11-26 11:49:38,060 INFO L140 encePairwiseOnDemand]: 360/374 looper letters, 292 selfloop transitions, 16 changer transitions 1/443 dead transitions. [2023-11-26 11:49:38,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 443 transitions, 1575 flow [2023-11-26 11:49:38,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:49:38,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:49:38,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 851 transitions. [2023-11-26 11:49:38,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688502673796791 [2023-11-26 11:49:38,067 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 851 transitions. [2023-11-26 11:49:38,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 851 transitions. [2023-11-26 11:49:38,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:38,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 851 transitions. [2023-11-26 11:49:38,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 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) [2023-11-26 11:49:38,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 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) [2023-11-26 11:49:38,083 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 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) [2023-11-26 11:49:38,083 INFO L175 Difference]: Start difference. First operand has 354 places, 376 transitions, 825 flow. Second operand 4 states and 851 transitions. [2023-11-26 11:49:38,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 443 transitions, 1575 flow [2023-11-26 11:49:38,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 443 transitions, 1575 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:38,104 INFO L231 Difference]: Finished difference. Result has 356 places, 376 transitions, 869 flow [2023-11-26 11:49:38,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=869, PETRI_PLACES=356, PETRI_TRANSITIONS=376} [2023-11-26 11:49:38,108 INFO L281 CegarLoopForPetriNet]: 351 programPoint places, 5 predicate places. [2023-11-26 11:49:38,108 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 376 transitions, 869 flow [2023-11-26 11:49:38,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 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) [2023-11-26 11:49:38,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:38,109 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:38,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:38,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:38,319 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-26 11:49:38,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:38,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1387768719, now seen corresponding path program 1 times [2023-11-26 11:49:38,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:38,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193693506] [2023-11-26 11:49:38,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:38,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:49:38,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:38,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193693506] [2023-11-26 11:49:38,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193693506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:38,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:38,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:38,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049627058] [2023-11-26 11:49:38,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:38,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:38,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:38,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:38,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:38,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 374 [2023-11-26 11:49:38,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 376 transitions, 869 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:38,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:38,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 374 [2023-11-26 11:49:38,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:43,247 INFO L124 PetriNetUnfolderBase]: 8135/19596 cut-off events. [2023-11-26 11:49:43,247 INFO L125 PetriNetUnfolderBase]: For 632/632 co-relation queries the response was YES. [2023-11-26 11:49:43,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35090 conditions, 19596 events. 8135/19596 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 156158 event pairs, 6365 based on Foata normal form. 1/16469 useless extension candidates. Maximal degree in co-relation 35052. Up to 14873 conditions per place. [2023-11-26 11:49:43,347 INFO L140 encePairwiseOnDemand]: 371/374 looper letters, 229 selfloop transitions, 4 changer transitions 0/375 dead transitions. [2023-11-26 11:49:43,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 375 transitions, 1331 flow [2023-11-26 11:49:43,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:43,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:43,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2023-11-26 11:49:43,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5864527629233511 [2023-11-26 11:49:43,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2023-11-26 11:49:43,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2023-11-26 11:49:43,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:43,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2023-11-26 11:49:43,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2023-11-26 11:49:43,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2023-11-26 11:49:43,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2023-11-26 11:49:43,360 INFO L175 Difference]: Start difference. First operand has 356 places, 376 transitions, 869 flow. Second operand 3 states and 658 transitions. [2023-11-26 11:49:43,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 375 transitions, 1331 flow [2023-11-26 11:49:43,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 375 transitions, 1311 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:43,371 INFO L231 Difference]: Finished difference. Result has 355 places, 375 transitions, 853 flow [2023-11-26 11:49:43,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=853, PETRI_PLACES=355, PETRI_TRANSITIONS=375} [2023-11-26 11:49:43,373 INFO L281 CegarLoopForPetriNet]: 351 programPoint places, 4 predicate places. [2023-11-26 11:49:43,374 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 375 transitions, 853 flow [2023-11-26 11:49:43,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:43,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:43,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:43,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:49:43,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-26 11:49:43,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:43,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2082257109, now seen corresponding path program 1 times [2023-11-26 11:49:43,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:43,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696634243] [2023-11-26 11:49:43,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:43,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:43,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:43,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696634243] [2023-11-26 11:49:43,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696634243] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:43,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771415213] [2023-11-26 11:49:43,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:43,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:43,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:43,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:43,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:49:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:43,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:49:43,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:43,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:43,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771415213] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:43,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:49:43,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-26 11:49:43,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858365473] [2023-11-26 11:49:43,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:43,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:49:43,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:43,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:49:43,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:49:43,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 374 [2023-11-26 11:49:43,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 375 transitions, 853 flow. Second operand has 10 states, 10 states have (on average 137.9) internal successors, (1379), 10 states have internal predecessors, (1379), 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) [2023-11-26 11:49:43,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:43,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 374 [2023-11-26 11:49:43,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:49,538 INFO L124 PetriNetUnfolderBase]: 8245/19673 cut-off events. [2023-11-26 11:49:49,538 INFO L125 PetriNetUnfolderBase]: For 363/363 co-relation queries the response was YES. [2023-11-26 11:49:49,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35246 conditions, 19673 events. 8245/19673 cut-off events. For 363/363 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 155466 event pairs, 3211 based on Foata normal form. 62/16596 useless extension candidates. Maximal degree in co-relation 35194. Up to 7488 conditions per place. [2023-11-26 11:49:49,629 INFO L140 encePairwiseOnDemand]: 350/374 looper letters, 463 selfloop transitions, 27 changer transitions 1/626 dead transitions. [2023-11-26 11:49:49,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 626 transitions, 2343 flow [2023-11-26 11:49:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:49:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:49:49,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1584 transitions. [2023-11-26 11:49:49,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2023-11-26 11:49:49,636 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1584 transitions. [2023-11-26 11:49:49,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1584 transitions. [2023-11-26 11:49:49,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:49,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1584 transitions. [2023-11-26 11:49:49,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 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) [2023-11-26 11:49:49,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 374.0) internal successors, (3366), 9 states have internal predecessors, (3366), 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) [2023-11-26 11:49:49,652 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 374.0) internal successors, (3366), 9 states have internal predecessors, (3366), 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) [2023-11-26 11:49:49,652 INFO L175 Difference]: Start difference. First operand has 355 places, 375 transitions, 853 flow. Second operand 8 states and 1584 transitions. [2023-11-26 11:49:49,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 626 transitions, 2343 flow [2023-11-26 11:49:49,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 626 transitions, 2329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:49,667 INFO L231 Difference]: Finished difference. Result has 358 places, 379 transitions, 939 flow [2023-11-26 11:49:49,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=939, PETRI_PLACES=358, PETRI_TRANSITIONS=379} [2023-11-26 11:49:49,669 INFO L281 CegarLoopForPetriNet]: 351 programPoint places, 7 predicate places. [2023-11-26 11:49:49,670 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 379 transitions, 939 flow [2023-11-26 11:49:49,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 137.9) internal successors, (1379), 10 states have internal predecessors, (1379), 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) [2023-11-26 11:49:49,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:49,671 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:49,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:49,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:49,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-26 11:49:49,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:49,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1744432075, now seen corresponding path program 2 times [2023-11-26 11:49:49,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:49,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592327562] [2023-11-26 11:49:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:49,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:49:50,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592327562] [2023-11-26 11:49:50,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592327562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:50,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:50,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:50,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305549245] [2023-11-26 11:49:50,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:50,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:49:50,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:50,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:49:50,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:49:50,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 374 [2023-11-26 11:49:50,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 379 transitions, 939 flow. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 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) [2023-11-26 11:49:50,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:50,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 374 [2023-11-26 11:49:50,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:55,427 INFO L124 PetriNetUnfolderBase]: 8201/19596 cut-off events. [2023-11-26 11:49:55,427 INFO L125 PetriNetUnfolderBase]: For 1066/1066 co-relation queries the response was YES. [2023-11-26 11:49:55,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35537 conditions, 19596 events. 8201/19596 cut-off events. For 1066/1066 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 155058 event pairs, 2995 based on Foata normal form. 40/16508 useless extension candidates. Maximal degree in co-relation 35483. Up to 7556 conditions per place. [2023-11-26 11:49:55,625 INFO L140 encePairwiseOnDemand]: 359/374 looper letters, 453 selfloop transitions, 13 changer transitions 0/601 dead transitions. [2023-11-26 11:49:55,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 601 transitions, 2315 flow [2023-11-26 11:49:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:49:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:49:55,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1013 transitions. [2023-11-26 11:49:55,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6771390374331551 [2023-11-26 11:49:55,630 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1013 transitions. [2023-11-26 11:49:55,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1013 transitions. [2023-11-26 11:49:55,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:55,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1013 transitions. [2023-11-26 11:49:55,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 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) [2023-11-26 11:49:55,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 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) [2023-11-26 11:49:55,639 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 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) [2023-11-26 11:49:55,639 INFO L175 Difference]: Start difference. First operand has 358 places, 379 transitions, 939 flow. Second operand 4 states and 1013 transitions. [2023-11-26 11:49:55,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 601 transitions, 2315 flow [2023-11-26 11:49:55,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 601 transitions, 2253 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-11-26 11:49:55,658 INFO L231 Difference]: Finished difference. Result has 354 places, 377 transitions, 899 flow [2023-11-26 11:49:55,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=899, PETRI_PLACES=354, PETRI_TRANSITIONS=377} [2023-11-26 11:49:55,660 INFO L281 CegarLoopForPetriNet]: 351 programPoint places, 3 predicate places. [2023-11-26 11:49:55,660 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 377 transitions, 899 flow [2023-11-26 11:49:55,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 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) [2023-11-26 11:49:55,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:55,661 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:55,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:49:55,662 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2023-11-26 11:49:55,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:55,662 INFO L85 PathProgramCache]: Analyzing trace with hash -723030532, now seen corresponding path program 1 times [2023-11-26 11:49:55,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:55,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504281551] [2023-11-26 11:49:55,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:55,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:49:55,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:55,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504281551] [2023-11-26 11:49:55,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504281551] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:55,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041647922] [2023-11-26 11:49:55,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:55,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:55,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:55,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:55,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf6ed87-2547-46d2-923d-9256dfa784a9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:49:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:56,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:49:56,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:49:56,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:49:56,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041647922] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:56,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:49:56,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-11-26 11:49:56,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496308790] [2023-11-26 11:49:56,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:56,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:49:56,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:56,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:49:56,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:49:56,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 374 [2023-11-26 11:49:56,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 377 transitions, 899 flow. Second operand has 11 states, 11 states have (on average 137.8181818181818) internal successors, (1516), 11 states have internal predecessors, (1516), 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) [2023-11-26 11:49:56,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:56,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 374 [2023-11-26 11:49:56,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:02,685 INFO L124 PetriNetUnfolderBase]: 8245/19671 cut-off events. [2023-11-26 11:50:02,685 INFO L125 PetriNetUnfolderBase]: For 874/874 co-relation queries the response was YES. [2023-11-26 11:50:02,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35569 conditions, 19671 events. 8245/19671 cut-off events. For 874/874 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 155428 event pairs, 3211 based on Foata normal form. 1/16535 useless extension candidates. Maximal degree in co-relation 35440. Up to 7488 conditions per place. [2023-11-26 11:50:02,780 INFO L140 encePairwiseOnDemand]: 354/374 looper letters, 463 selfloop transitions, 29 changer transitions 0/625 dead transitions. [2023-11-26 11:50:02,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 625 transitions, 2385 flow [2023-11-26 11:50:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:50:02,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:50:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1853 transitions. [2023-11-26 11:50:02,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954545454545455 [2023-11-26 11:50:02,791 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1853 transitions. [2023-11-26 11:50:02,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1853 transitions. [2023-11-26 11:50:02,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:02,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1853 transitions. [2023-11-26 11:50:02,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 185.3) internal successors, (1853), 10 states have internal predecessors, (1853), 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) [2023-11-26 11:50:02,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 374.0) internal successors, (4114), 11 states have internal predecessors, (4114), 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) [2023-11-26 11:50:02,812 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 374.0) internal successors, (4114), 11 states have internal predecessors, (4114), 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) [2023-11-26 11:50:02,812 INFO L175 Difference]: Start difference. First operand has 354 places, 377 transitions, 899 flow. Second operand 10 states and 1853 transitions. [2023-11-26 11:50:02,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 625 transitions, 2385 flow [2023-11-26 11:50:02,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 625 transitions, 2371 flow, removed 0 selfloop flow, removed 2 redundant places.