./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:17:43,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:17:43,244 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:17:43,257 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:17:43,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:17:43,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:17:43,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:17:43,297 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:17:43,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:17:43,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:17:43,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:17:43,305 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:17:43,306 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:17:43,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:17:43,308 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:17:43,308 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:17:43,309 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:17:43,309 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:17:43,310 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:17:43,310 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:17:43,310 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:17:43,311 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:17:43,312 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:17:43,312 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:17:43,312 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:17:43,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:17:43,313 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:17:43,314 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:17:43,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:17:43,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:17:43,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:43,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:17:43,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:17:43,317 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:17:43,317 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:17:43,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:17:43,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:17:43,318 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:17:43,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:17:43,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:17:43,319 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:17:43,319 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_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d [2023-11-06 22:17:43,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:17:43,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:17:43,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:17:43,667 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:17:43,668 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:17:43,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2023-11-06 22:17:46,739 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:17:47,063 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:17:47,065 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2023-11-06 22:17:47,079 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/data/3e16ed997/be07445d9cb44e97b4e056f800fc1f65/FLAGcb7085844 [2023-11-06 22:17:47,094 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/data/3e16ed997/be07445d9cb44e97b4e056f800fc1f65 [2023-11-06 22:17:47,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:17:47,098 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:17:47,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:47,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:17:47,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:17:47,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:47" (1/1) ... [2023-11-06 22:17:47,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ac09f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:47, skipping insertion in model container [2023-11-06 22:17:47,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:47" (1/1) ... [2023-11-06 22:17:47,135 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:17:47,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:47,356 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:17:47,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:47,431 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:17:47,431 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:17:47,442 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:17:47,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:47 WrapperNode [2023-11-06 22:17:47,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:47,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:47,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:17:47,444 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:17:47,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:47" (1/1) ... [2023-11-06 22:17:47,477 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:47" (1/1) ... [2023-11-06 22:17:47,515 INFO L138 Inliner]: procedures = 25, calls = 64, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 364 [2023-11-06 22:17:47,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:47,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:17:47,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:17:47,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:17:47,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:47" (1/1) ... [2023-11-06 22:17:47,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:47" (1/1) ... [2023-11-06 22:17:47,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:47" (1/1) ... [2023-11-06 22:17:47,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:47" (1/1) ... [2023-11-06 22:17:47,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:47" (1/1) ... [2023-11-06 22:17:47,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:47" (1/1) ... [2023-11-06 22:17:47,567 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:47" (1/1) ... [2023-11-06 22:17:47,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:47" (1/1) ... [2023-11-06 22:17:47,581 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:17:47,582 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:17:47,583 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:17:47,590 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:17:47,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:47" (1/1) ... [2023-11-06 22:17:47,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:47,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:47,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:17:47,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:17:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:17:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:17:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:17:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:17:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:17:47,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:17:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:17:47,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:17:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:17:47,677 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:17:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:17:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:17:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:17:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:17:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:17:47,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:17:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:17:47,683 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:17:47,851 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:17:47,853 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:17:48,479 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:17:48,850 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:17:48,851 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:17:48,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:48 BoogieIcfgContainer [2023-11-06 22:17:48,856 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:17:48,860 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:17:48,861 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:17:48,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:17:48,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:17:47" (1/3) ... [2023-11-06 22:17:48,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28bd93f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:48, skipping insertion in model container [2023-11-06 22:17:48,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:47" (2/3) ... [2023-11-06 22:17:48,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28bd93f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:48, skipping insertion in model container [2023-11-06 22:17:48,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:48" (3/3) ... [2023-11-06 22:17:48,871 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2023-11-06 22:17:48,879 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:17:48,887 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:17:48,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-06 22:17:48,888 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:17:49,030 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:17:49,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 333 transitions, 687 flow [2023-11-06 22:17:49,237 INFO L124 PetriNetUnfolderBase]: 25/330 cut-off events. [2023-11-06 22:17:49,237 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:17:49,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 330 events. 25/330 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 393 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 278. Up to 3 conditions per place. [2023-11-06 22:17:49,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 333 transitions, 687 flow [2023-11-06 22:17:49,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 306 transitions, 627 flow [2023-11-06 22:17:49,263 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:17:49,273 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 306 transitions, 627 flow [2023-11-06 22:17:49,276 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 306 transitions, 627 flow [2023-11-06 22:17:49,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 306 transitions, 627 flow [2023-11-06 22:17:49,378 INFO L124 PetriNetUnfolderBase]: 24/306 cut-off events. [2023-11-06 22:17:49,379 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:17:49,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 306 events. 24/306 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 397 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 278. Up to 3 conditions per place. [2023-11-06 22:17:49,390 INFO L119 LiptonReduction]: Number of co-enabled transitions 6376 [2023-11-06 22:18:04,245 INFO L134 LiptonReduction]: Checked pairs total: 22676 [2023-11-06 22:18:04,246 INFO L136 LiptonReduction]: Total number of compositions: 337 [2023-11-06 22:18:04,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:18:04,280 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=LoopsAndPotentialCycles, 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;@3890e759, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:18:04,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-11-06 22:18:04,285 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:18:04,286 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:18:04,286 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:04,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:04,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:18:04,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:04,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:04,293 INFO L85 PathProgramCache]: Analyzing trace with hash 49241, now seen corresponding path program 1 times [2023-11-06 22:18:04,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:04,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072754727] [2023-11-06 22:18:04,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:04,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:04,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:04,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072754727] [2023-11-06 22:18:04,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072754727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:04,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:04,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:18:04,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770898389] [2023-11-06 22:18:04,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:04,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:04,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:04,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:04,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:04,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 670 [2023-11-06 22:18:04,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 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) [2023-11-06 22:18:04,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:04,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 670 [2023-11-06 22:18:04,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:06,661 INFO L124 PetriNetUnfolderBase]: 8459/11800 cut-off events. [2023-11-06 22:18:06,662 INFO L125 PetriNetUnfolderBase]: For 424/424 co-relation queries the response was YES. [2023-11-06 22:18:06,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24025 conditions, 11800 events. 8459/11800 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 61952 event pairs, 7157 based on Foata normal form. 0/4936 useless extension candidates. Maximal degree in co-relation 22588. Up to 11796 conditions per place. [2023-11-06 22:18:06,787 INFO L140 encePairwiseOnDemand]: 649/670 looper letters, 58 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2023-11-06 22:18:06,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 65 transitions, 275 flow [2023-11-06 22:18:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 874 transitions. [2023-11-06 22:18:06,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43482587064676614 [2023-11-06 22:18:06,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 874 transitions. [2023-11-06 22:18:06,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 874 transitions. [2023-11-06 22:18:06,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:06,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 874 transitions. [2023-11-06 22:18:06,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 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) [2023-11-06 22:18:06,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:06,849 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:06,851 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 149 flow. Second operand 3 states and 874 transitions. [2023-11-06 22:18:06,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 65 transitions, 275 flow [2023-11-06 22:18:06,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 266 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:18:06,880 INFO L231 Difference]: Finished difference. Result has 60 places, 65 transitions, 188 flow [2023-11-06 22:18:06,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=60, PETRI_TRANSITIONS=65} [2023-11-06 22:18:06,887 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2023-11-06 22:18:06,887 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 65 transitions, 188 flow [2023-11-06 22:18:06,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 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) [2023-11-06 22:18:06,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:06,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:18:06,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:18:06,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:06,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:06,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1527910, now seen corresponding path program 1 times [2023-11-06 22:18:06,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:06,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919275603] [2023-11-06 22:18:06,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:06,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:07,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:07,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919275603] [2023-11-06 22:18:07,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919275603] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:07,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584955213] [2023-11-06 22:18:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:07,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:07,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:07,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:07,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:18:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:07,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:18:07,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:07,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:07,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584955213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:07,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:18:07,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 22:18:07,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345727756] [2023-11-06 22:18:07,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:07,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:07,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:07,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:07,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:07,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 670 [2023-11-06 22:18:07,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 265.75) internal successors, (1063), 4 states have internal predecessors, (1063), 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) [2023-11-06 22:18:07,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:07,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 670 [2023-11-06 22:18:07,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:08,993 INFO L124 PetriNetUnfolderBase]: 8459/11797 cut-off events. [2023-11-06 22:18:08,993 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-06 22:18:09,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23916 conditions, 11797 events. 8459/11797 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 61895 event pairs, 7157 based on Foata normal form. 0/4940 useless extension candidates. Maximal degree in co-relation 23857. Up to 11784 conditions per place. [2023-11-06 22:18:09,080 INFO L140 encePairwiseOnDemand]: 660/670 looper letters, 54 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2023-11-06 22:18:09,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 300 flow [2023-11-06 22:18:09,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:18:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:18:09,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1125 transitions. [2023-11-06 22:18:09,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4197761194029851 [2023-11-06 22:18:09,093 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1125 transitions. [2023-11-06 22:18:09,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1125 transitions. [2023-11-06 22:18:09,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:09,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1125 transitions. [2023-11-06 22:18:09,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 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) [2023-11-06 22:18:09,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 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) [2023-11-06 22:18:09,108 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 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) [2023-11-06 22:18:09,109 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 188 flow. Second operand 4 states and 1125 transitions. [2023-11-06 22:18:09,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 300 flow [2023-11-06 22:18:09,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:09,113 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 178 flow [2023-11-06 22:18:09,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2023-11-06 22:18:09,114 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2023-11-06 22:18:09,114 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 178 flow [2023-11-06 22:18:09,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.75) internal successors, (1063), 4 states have internal predecessors, (1063), 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) [2023-11-06 22:18:09,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:09,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:18:09,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:09,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 22:18:09,332 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:09,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:09,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1527908, now seen corresponding path program 1 times [2023-11-06 22:18:09,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:09,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736005427] [2023-11-06 22:18:09,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:09,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:09,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:09,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:09,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736005427] [2023-11-06 22:18:09,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736005427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:09,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563028186] [2023-11-06 22:18:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:09,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:09,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:09,432 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:09,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:18:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:09,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:18:09,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:09,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:09,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563028186] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:09,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:09,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:18:09,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334012453] [2023-11-06 22:18:09,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:09,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:18:09,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:09,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:18:09,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:09,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 670 [2023-11-06 22:18:09,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 266.14285714285717) internal successors, (1863), 7 states have internal predecessors, (1863), 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) [2023-11-06 22:18:09,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:09,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 670 [2023-11-06 22:18:09,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:11,461 INFO L124 PetriNetUnfolderBase]: 8468/11815 cut-off events. [2023-11-06 22:18:11,461 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-06 22:18:11,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23980 conditions, 11815 events. 8468/11815 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 61973 event pairs, 7157 based on Foata normal form. 0/4959 useless extension candidates. Maximal degree in co-relation 23857. Up to 11796 conditions per place. [2023-11-06 22:18:11,549 INFO L140 encePairwiseOnDemand]: 660/670 looper letters, 55 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2023-11-06 22:18:11,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 428 flow [2023-11-06 22:18:11,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:18:11,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:18:11,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1679 transitions. [2023-11-06 22:18:11,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41766169154228855 [2023-11-06 22:18:11,561 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1679 transitions. [2023-11-06 22:18:11,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1679 transitions. [2023-11-06 22:18:11,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:11,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1679 transitions. [2023-11-06 22:18:11,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 279.8333333333333) internal successors, (1679), 6 states have internal predecessors, (1679), 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) [2023-11-06 22:18:11,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 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) [2023-11-06 22:18:11,587 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 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) [2023-11-06 22:18:11,588 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 178 flow. Second operand 6 states and 1679 transitions. [2023-11-06 22:18:11,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 428 flow [2023-11-06 22:18:11,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:11,595 INFO L231 Difference]: Finished difference. Result has 64 places, 80 transitions, 352 flow [2023-11-06 22:18:11,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=64, PETRI_TRANSITIONS=80} [2023-11-06 22:18:11,597 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2023-11-06 22:18:11,597 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 80 transitions, 352 flow [2023-11-06 22:18:11,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 266.14285714285717) internal successors, (1863), 7 states have internal predecessors, (1863), 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) [2023-11-06 22:18:11,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:11,600 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:18:11,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:11,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 22:18:11,806 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:11,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1725244521, now seen corresponding path program 2 times [2023-11-06 22:18:11,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:11,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621097731] [2023-11-06 22:18:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:11,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:12,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:12,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621097731] [2023-11-06 22:18:12,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621097731] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:12,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468312702] [2023-11-06 22:18:12,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:18:12,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:12,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:12,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:12,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:18:12,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:18:12,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:18:12,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:18:12,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:18:12,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:12,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468312702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:12,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:18:12,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:18:12,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936016376] [2023-11-06 22:18:12,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:12,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:12,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:12,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:12,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:18:12,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 670 [2023-11-06 22:18:12,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 80 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 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) [2023-11-06 22:18:12,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:12,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 670 [2023-11-06 22:18:12,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:13,859 INFO L124 PetriNetUnfolderBase]: 8468/11814 cut-off events. [2023-11-06 22:18:13,859 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-11-06 22:18:13,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24019 conditions, 11814 events. 8468/11814 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 61946 event pairs, 7157 based on Foata normal form. 1/4963 useless extension candidates. Maximal degree in co-relation 23931. Up to 11809 conditions per place. [2023-11-06 22:18:13,927 INFO L140 encePairwiseOnDemand]: 667/670 looper letters, 73 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2023-11-06 22:18:13,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 79 transitions, 500 flow [2023-11-06 22:18:13,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:13,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:13,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 869 transitions. [2023-11-06 22:18:13,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43233830845771143 [2023-11-06 22:18:13,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 869 transitions. [2023-11-06 22:18:13,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 869 transitions. [2023-11-06 22:18:13,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:13,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 869 transitions. [2023-11-06 22:18:13,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 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) [2023-11-06 22:18:13,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:13,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:13,945 INFO L175 Difference]: Start difference. First operand has 64 places, 80 transitions, 352 flow. Second operand 3 states and 869 transitions. [2023-11-06 22:18:13,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 79 transitions, 500 flow [2023-11-06 22:18:13,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 463 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:13,950 INFO L231 Difference]: Finished difference. Result has 64 places, 79 transitions, 317 flow [2023-11-06 22:18:13,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=64, PETRI_TRANSITIONS=79} [2023-11-06 22:18:13,953 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2023-11-06 22:18:13,954 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 79 transitions, 317 flow [2023-11-06 22:18:13,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 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) [2023-11-06 22:18:13,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:13,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:13,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:14,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:14,161 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:14,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:14,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1020544960, now seen corresponding path program 1 times [2023-11-06 22:18:14,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:14,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652598328] [2023-11-06 22:18:14,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:14,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:14,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:14,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652598328] [2023-11-06 22:18:14,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652598328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:14,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:14,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:14,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570386997] [2023-11-06 22:18:14,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:14,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:14,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:14,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:14,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:18:14,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 670 [2023-11-06 22:18:14,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 79 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 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) [2023-11-06 22:18:14,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:14,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 670 [2023-11-06 22:18:14,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:15,631 INFO L124 PetriNetUnfolderBase]: 8608/12059 cut-off events. [2023-11-06 22:18:15,631 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-06 22:18:15,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24554 conditions, 12059 events. 8608/12059 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 63654 event pairs, 7280 based on Foata normal form. 90/5241 useless extension candidates. Maximal degree in co-relation 24423. Up to 11813 conditions per place. [2023-11-06 22:18:15,712 INFO L140 encePairwiseOnDemand]: 658/670 looper letters, 108 selfloop transitions, 10 changer transitions 1/119 dead transitions. [2023-11-06 22:18:15,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 119 transitions, 736 flow [2023-11-06 22:18:15,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:18:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:18:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1390 transitions. [2023-11-06 22:18:15,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41492537313432837 [2023-11-06 22:18:15,719 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1390 transitions. [2023-11-06 22:18:15,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1390 transitions. [2023-11-06 22:18:15,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:15,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1390 transitions. [2023-11-06 22:18:15,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 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) [2023-11-06 22:18:15,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 670.0) internal successors, (4020), 6 states have internal predecessors, (4020), 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) [2023-11-06 22:18:15,734 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 670.0) internal successors, (4020), 6 states have internal predecessors, (4020), 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) [2023-11-06 22:18:15,734 INFO L175 Difference]: Start difference. First operand has 64 places, 79 transitions, 317 flow. Second operand 5 states and 1390 transitions. [2023-11-06 22:18:15,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 119 transitions, 736 flow [2023-11-06 22:18:15,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 119 transitions, 724 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:15,739 INFO L231 Difference]: Finished difference. Result has 68 places, 86 transitions, 410 flow [2023-11-06 22:18:15,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=68, PETRI_TRANSITIONS=86} [2023-11-06 22:18:15,740 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2023-11-06 22:18:15,741 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 86 transitions, 410 flow [2023-11-06 22:18:15,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 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) [2023-11-06 22:18:15,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:15,742 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 22:18:15,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:18:15,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:15,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:15,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1049741586, now seen corresponding path program 1 times [2023-11-06 22:18:15,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:15,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811169684] [2023-11-06 22:18:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:15,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:15,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:15,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:15,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811169684] [2023-11-06 22:18:15,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811169684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:15,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976167040] [2023-11-06 22:18:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:15,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:15,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:15,858 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:15,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:18:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:15,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:18:15,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:16,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:16,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976167040] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:16,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:16,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:18:16,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933365508] [2023-11-06 22:18:16,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:16,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:18:16,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:16,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:18:16,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:18:16,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 670 [2023-11-06 22:18:16,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 86 transitions, 410 flow. Second operand has 13 states, 13 states have (on average 266.15384615384613) internal successors, (3460), 13 states have internal predecessors, (3460), 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) [2023-11-06 22:18:16,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:16,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 670 [2023-11-06 22:18:16,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:17,934 INFO L124 PetriNetUnfolderBase]: 8638/12119 cut-off events. [2023-11-06 22:18:17,934 INFO L125 PetriNetUnfolderBase]: For 780/780 co-relation queries the response was YES. [2023-11-06 22:18:17,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26136 conditions, 12119 events. 8638/12119 cut-off events. For 780/780 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 64121 event pairs, 7280 based on Foata normal form. 24/5235 useless extension candidates. Maximal degree in co-relation 25759. Up to 12041 conditions per place. [2023-11-06 22:18:18,027 INFO L140 encePairwiseOnDemand]: 661/670 looper letters, 54 selfloop transitions, 74 changer transitions 0/128 dead transitions. [2023-11-06 22:18:18,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 128 transitions, 960 flow [2023-11-06 22:18:18,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:18:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:18:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3307 transitions. [2023-11-06 22:18:18,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41131840796019903 [2023-11-06 22:18:18,045 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3307 transitions. [2023-11-06 22:18:18,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3307 transitions. [2023-11-06 22:18:18,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:18,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3307 transitions. [2023-11-06 22:18:18,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 275.5833333333333) internal successors, (3307), 12 states have internal predecessors, (3307), 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) [2023-11-06 22:18:18,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 670.0) internal successors, (8710), 13 states have internal predecessors, (8710), 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) [2023-11-06 22:18:18,082 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 670.0) internal successors, (8710), 13 states have internal predecessors, (8710), 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) [2023-11-06 22:18:18,082 INFO L175 Difference]: Start difference. First operand has 68 places, 86 transitions, 410 flow. Second operand 12 states and 3307 transitions. [2023-11-06 22:18:18,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 128 transitions, 960 flow [2023-11-06 22:18:18,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 128 transitions, 954 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:18,098 INFO L231 Difference]: Finished difference. Result has 84 places, 128 transitions, 938 flow [2023-11-06 22:18:18,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=938, PETRI_PLACES=84, PETRI_TRANSITIONS=128} [2023-11-06 22:18:18,101 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2023-11-06 22:18:18,101 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 128 transitions, 938 flow [2023-11-06 22:18:18,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 266.15384615384613) internal successors, (3460), 13 states have internal predecessors, (3460), 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) [2023-11-06 22:18:18,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:18,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:18,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:18,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:18:18,310 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:18,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:18,311 INFO L85 PathProgramCache]: Analyzing trace with hash 819865683, now seen corresponding path program 1 times [2023-11-06 22:18:18,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:18,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258951127] [2023-11-06 22:18:18,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:18,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:18,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:18,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:18,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258951127] [2023-11-06 22:18:18,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258951127] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:18,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058084924] [2023-11-06 22:18:18,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:18,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:18,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:18,485 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:18,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:18:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:18,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:18:18,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:18,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:18,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058084924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:18,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:18:18,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-11-06 22:18:18,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556690652] [2023-11-06 22:18:18,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:18,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:18,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:18,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:18,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:18:18,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 670 [2023-11-06 22:18:18,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 128 transitions, 938 flow. Second operand has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 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) [2023-11-06 22:18:18,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:18,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 670 [2023-11-06 22:18:18,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:19,851 INFO L124 PetriNetUnfolderBase]: 7310/10263 cut-off events. [2023-11-06 22:18:19,851 INFO L125 PetriNetUnfolderBase]: For 778/778 co-relation queries the response was YES. [2023-11-06 22:18:19,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21956 conditions, 10263 events. 7310/10263 cut-off events. For 778/778 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 52830 event pairs, 6088 based on Foata normal form. 0/4593 useless extension candidates. Maximal degree in co-relation 21752. Up to 10263 conditions per place. [2023-11-06 22:18:19,919 INFO L140 encePairwiseOnDemand]: 667/670 looper letters, 125 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2023-11-06 22:18:19,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 126 transitions, 1182 flow [2023-11-06 22:18:19,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 889 transitions. [2023-11-06 22:18:19,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44228855721393034 [2023-11-06 22:18:19,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 889 transitions. [2023-11-06 22:18:19,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 889 transitions. [2023-11-06 22:18:19,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:19,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 889 transitions. [2023-11-06 22:18:19,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 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) [2023-11-06 22:18:19,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:19,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:19,939 INFO L175 Difference]: Start difference. First operand has 84 places, 128 transitions, 938 flow. Second operand 3 states and 889 transitions. [2023-11-06 22:18:19,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 126 transitions, 1182 flow [2023-11-06 22:18:19,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 126 transitions, 978 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-11-06 22:18:19,948 INFO L231 Difference]: Finished difference. Result has 79 places, 126 transitions, 728 flow [2023-11-06 22:18:19,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=728, PETRI_PLACES=79, PETRI_TRANSITIONS=126} [2023-11-06 22:18:19,950 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2023-11-06 22:18:19,952 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 126 transitions, 728 flow [2023-11-06 22:18:19,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 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) [2023-11-06 22:18:19,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:19,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:19,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:20,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:20,159 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:20,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash -353963857, now seen corresponding path program 1 times [2023-11-06 22:18:20,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:20,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328706259] [2023-11-06 22:18:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:20,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:20,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:20,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328706259] [2023-11-06 22:18:20,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328706259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:20,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41155494] [2023-11-06 22:18:20,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:20,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:20,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:20,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:20,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:18:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:20,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:18:20,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:20,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:20,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41155494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:20,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:18:20,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-06 22:18:20,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951144749] [2023-11-06 22:18:20,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:20,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:20,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:20,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:20,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:18:20,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 670 [2023-11-06 22:18:20,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 126 transitions, 728 flow. Second operand has 4 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 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) [2023-11-06 22:18:20,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:20,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 670 [2023-11-06 22:18:20,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:21,578 INFO L124 PetriNetUnfolderBase]: 7022/9775 cut-off events. [2023-11-06 22:18:21,579 INFO L125 PetriNetUnfolderBase]: For 784/784 co-relation queries the response was YES. [2023-11-06 22:18:21,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21190 conditions, 9775 events. 7022/9775 cut-off events. For 784/784 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 52197 event pairs, 2504 based on Foata normal form. 0/4563 useless extension candidates. Maximal degree in co-relation 21169. Up to 5309 conditions per place. [2023-11-06 22:18:21,654 INFO L140 encePairwiseOnDemand]: 661/670 looper letters, 132 selfloop transitions, 18 changer transitions 0/150 dead transitions. [2023-11-06 22:18:21,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 150 transitions, 1085 flow [2023-11-06 22:18:21,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:18:21,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:18:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1183 transitions. [2023-11-06 22:18:21,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4414179104477612 [2023-11-06 22:18:21,660 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1183 transitions. [2023-11-06 22:18:21,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1183 transitions. [2023-11-06 22:18:21,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:21,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1183 transitions. [2023-11-06 22:18:21,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 295.75) internal successors, (1183), 4 states have internal predecessors, (1183), 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) [2023-11-06 22:18:21,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 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) [2023-11-06 22:18:21,680 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 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) [2023-11-06 22:18:21,680 INFO L175 Difference]: Start difference. First operand has 79 places, 126 transitions, 728 flow. Second operand 4 states and 1183 transitions. [2023-11-06 22:18:21,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 150 transitions, 1085 flow [2023-11-06 22:18:21,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 150 transitions, 1084 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:21,689 INFO L231 Difference]: Finished difference. Result has 81 places, 126 transitions, 806 flow [2023-11-06 22:18:21,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=806, PETRI_PLACES=81, PETRI_TRANSITIONS=126} [2023-11-06 22:18:21,693 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 14 predicate places. [2023-11-06 22:18:21,693 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 126 transitions, 806 flow [2023-11-06 22:18:21,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 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) [2023-11-06 22:18:21,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:21,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:21,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:21,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:21,900 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:21,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:21,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1912017140, now seen corresponding path program 1 times [2023-11-06 22:18:21,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:21,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217556223] [2023-11-06 22:18:21,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:21,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:21,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:21,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:21,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217556223] [2023-11-06 22:18:21,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217556223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:21,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:21,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:21,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837460724] [2023-11-06 22:18:21,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:21,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:21,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:21,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:21,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:21,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 670 [2023-11-06 22:18:21,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 126 transitions, 806 flow. Second operand has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 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) [2023-11-06 22:18:21,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:21,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 670 [2023-11-06 22:18:21,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:23,627 INFO L124 PetriNetUnfolderBase]: 12394/17147 cut-off events. [2023-11-06 22:18:23,628 INFO L125 PetriNetUnfolderBase]: For 5367/5367 co-relation queries the response was YES. [2023-11-06 22:18:23,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41170 conditions, 17147 events. 12394/17147 cut-off events. For 5367/5367 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 94764 event pairs, 5556 based on Foata normal form. 0/8753 useless extension candidates. Maximal degree in co-relation 41146. Up to 9642 conditions per place. [2023-11-06 22:18:23,748 INFO L140 encePairwiseOnDemand]: 666/670 looper letters, 164 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2023-11-06 22:18:23,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 166 transitions, 1249 flow [2023-11-06 22:18:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:23,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:23,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 928 transitions. [2023-11-06 22:18:23,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4616915422885572 [2023-11-06 22:18:23,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 928 transitions. [2023-11-06 22:18:23,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 928 transitions. [2023-11-06 22:18:23,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:23,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 928 transitions. [2023-11-06 22:18:23,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 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) [2023-11-06 22:18:23,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:23,759 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:23,759 INFO L175 Difference]: Start difference. First operand has 81 places, 126 transitions, 806 flow. Second operand 3 states and 928 transitions. [2023-11-06 22:18:23,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 166 transitions, 1249 flow [2023-11-06 22:18:23,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 166 transitions, 1248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:23,782 INFO L231 Difference]: Finished difference. Result has 83 places, 127 transitions, 823 flow [2023-11-06 22:18:23,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=823, PETRI_PLACES=83, PETRI_TRANSITIONS=127} [2023-11-06 22:18:23,783 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 16 predicate places. [2023-11-06 22:18:23,783 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 127 transitions, 823 flow [2023-11-06 22:18:23,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 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) [2023-11-06 22:18:23,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:23,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:23,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:18:23,784 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:23,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1912017284, now seen corresponding path program 1 times [2023-11-06 22:18:23,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:23,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6353969] [2023-11-06 22:18:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:23,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:23,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:23,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6353969] [2023-11-06 22:18:23,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6353969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:23,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:23,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:23,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380665343] [2023-11-06 22:18:23,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:23,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:23,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:23,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:23,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:18:23,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 670 [2023-11-06 22:18:23,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 127 transitions, 823 flow. Second operand has 4 states, 4 states have (on average 262.5) internal successors, (1050), 4 states have internal predecessors, (1050), 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) [2023-11-06 22:18:23,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:23,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 670 [2023-11-06 22:18:23,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:26,359 INFO L124 PetriNetUnfolderBase]: 16076/22415 cut-off events. [2023-11-06 22:18:26,359 INFO L125 PetriNetUnfolderBase]: For 15419/15419 co-relation queries the response was YES. [2023-11-06 22:18:26,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56566 conditions, 22415 events. 16076/22415 cut-off events. For 15419/15419 co-relation queries the response was YES. Maximal size of possible extension queue 929. Compared 123768 event pairs, 13070 based on Foata normal form. 502/12657 useless extension candidates. Maximal degree in co-relation 56541. Up to 17124 conditions per place. [2023-11-06 22:18:26,508 INFO L140 encePairwiseOnDemand]: 656/670 looper letters, 136 selfloop transitions, 25 changer transitions 0/161 dead transitions. [2023-11-06 22:18:26,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 161 transitions, 1269 flow [2023-11-06 22:18:26,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:18:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:18:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1135 transitions. [2023-11-06 22:18:26,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42350746268656714 [2023-11-06 22:18:26,513 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1135 transitions. [2023-11-06 22:18:26,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1135 transitions. [2023-11-06 22:18:26,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:26,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1135 transitions. [2023-11-06 22:18:26,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 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) [2023-11-06 22:18:26,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 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) [2023-11-06 22:18:26,522 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 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) [2023-11-06 22:18:26,523 INFO L175 Difference]: Start difference. First operand has 83 places, 127 transitions, 823 flow. Second operand 4 states and 1135 transitions. [2023-11-06 22:18:26,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 161 transitions, 1269 flow [2023-11-06 22:18:26,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 161 transitions, 1265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:26,539 INFO L231 Difference]: Finished difference. Result has 86 places, 127 transitions, 895 flow [2023-11-06 22:18:26,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=895, PETRI_PLACES=86, PETRI_TRANSITIONS=127} [2023-11-06 22:18:26,540 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2023-11-06 22:18:26,541 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 127 transitions, 895 flow [2023-11-06 22:18:26,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 262.5) internal successors, (1050), 4 states have internal predecessors, (1050), 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) [2023-11-06 22:18:26,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:26,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:26,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:18:26,542 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:26,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:26,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1499044566, now seen corresponding path program 1 times [2023-11-06 22:18:26,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:26,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246612558] [2023-11-06 22:18:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:26,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:26,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:26,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246612558] [2023-11-06 22:18:26,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246612558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:26,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:26,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:26,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187391874] [2023-11-06 22:18:26,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:26,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:26,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:26,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:26,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:26,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 670 [2023-11-06 22:18:26,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 127 transitions, 895 flow. Second operand has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 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) [2023-11-06 22:18:26,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:26,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 670 [2023-11-06 22:18:26,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:29,196 INFO L124 PetriNetUnfolderBase]: 17996/24979 cut-off events. [2023-11-06 22:18:29,196 INFO L125 PetriNetUnfolderBase]: For 17193/17193 co-relation queries the response was YES. [2023-11-06 22:18:29,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67617 conditions, 24979 events. 17996/24979 cut-off events. For 17193/17193 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 137668 event pairs, 4340 based on Foata normal form. 780/14575 useless extension candidates. Maximal degree in co-relation 67591. Up to 20333 conditions per place. [2023-11-06 22:18:29,395 INFO L140 encePairwiseOnDemand]: 660/670 looper letters, 151 selfloop transitions, 5 changer transitions 1/157 dead transitions. [2023-11-06 22:18:29,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 157 transitions, 1328 flow [2023-11-06 22:18:29,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:29,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 911 transitions. [2023-11-06 22:18:29,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532338308457711 [2023-11-06 22:18:29,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 911 transitions. [2023-11-06 22:18:29,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 911 transitions. [2023-11-06 22:18:29,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:29,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 911 transitions. [2023-11-06 22:18:29,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 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) [2023-11-06 22:18:29,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:29,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:29,408 INFO L175 Difference]: Start difference. First operand has 86 places, 127 transitions, 895 flow. Second operand 3 states and 911 transitions. [2023-11-06 22:18:29,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 157 transitions, 1328 flow [2023-11-06 22:18:29,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 157 transitions, 1301 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:29,435 INFO L231 Difference]: Finished difference. Result has 88 places, 130 transitions, 893 flow [2023-11-06 22:18:29,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=893, PETRI_PLACES=88, PETRI_TRANSITIONS=130} [2023-11-06 22:18:29,436 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2023-11-06 22:18:29,436 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 130 transitions, 893 flow [2023-11-06 22:18:29,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 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) [2023-11-06 22:18:29,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:29,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:29,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:18:29,437 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:29,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:29,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1814421623, now seen corresponding path program 1 times [2023-11-06 22:18:29,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:29,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877340703] [2023-11-06 22:18:29,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:29,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:29,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:29,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877340703] [2023-11-06 22:18:29,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877340703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:29,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157361703] [2023-11-06 22:18:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:29,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:29,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:29,584 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:29,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:18:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:29,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:18:29,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:18:29,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:29,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157361703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:29,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:18:29,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-06 22:18:29,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143655773] [2023-11-06 22:18:29,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:29,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:29,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:18:29,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 670 [2023-11-06 22:18:29,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 130 transitions, 893 flow. Second operand has 3 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 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) [2023-11-06 22:18:29,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:29,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 670 [2023-11-06 22:18:29,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:32,671 INFO L124 PetriNetUnfolderBase]: 15997/22183 cut-off events. [2023-11-06 22:18:32,671 INFO L125 PetriNetUnfolderBase]: For 17576/17576 co-relation queries the response was YES. [2023-11-06 22:18:32,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66219 conditions, 22183 events. 15997/22183 cut-off events. For 17576/17576 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 119280 event pairs, 11301 based on Foata normal form. 0/13509 useless extension candidates. Maximal degree in co-relation 66191. Up to 22183 conditions per place. [2023-11-06 22:18:32,853 INFO L140 encePairwiseOnDemand]: 667/670 looper letters, 127 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2023-11-06 22:18:32,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 128 transitions, 1139 flow [2023-11-06 22:18:32,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:32,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:32,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 885 transitions. [2023-11-06 22:18:32,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44029850746268656 [2023-11-06 22:18:32,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 885 transitions. [2023-11-06 22:18:32,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 885 transitions. [2023-11-06 22:18:32,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:32,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 885 transitions. [2023-11-06 22:18:32,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 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) [2023-11-06 22:18:32,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:32,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:32,868 INFO L175 Difference]: Start difference. First operand has 88 places, 130 transitions, 893 flow. Second operand 3 states and 885 transitions. [2023-11-06 22:18:32,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 128 transitions, 1139 flow [2023-11-06 22:18:32,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 128 transitions, 1134 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:32,905 INFO L231 Difference]: Finished difference. Result has 87 places, 128 transitions, 880 flow [2023-11-06 22:18:32,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=880, PETRI_PLACES=87, PETRI_TRANSITIONS=128} [2023-11-06 22:18:32,906 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 20 predicate places. [2023-11-06 22:18:32,906 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 128 transitions, 880 flow [2023-11-06 22:18:32,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 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) [2023-11-06 22:18:32,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:32,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:32,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:33,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:18:33,113 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:33,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:33,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1814421622, now seen corresponding path program 1 times [2023-11-06 22:18:33,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:33,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743304444] [2023-11-06 22:18:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:33,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:18:33,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:33,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743304444] [2023-11-06 22:18:33,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743304444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:33,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:33,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:33,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376105290] [2023-11-06 22:18:33,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:33,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:33,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:18:33,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 670 [2023-11-06 22:18:33,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 128 transitions, 880 flow. Second operand has 4 states, 4 states have (on average 274.75) internal successors, (1099), 4 states have internal predecessors, (1099), 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) [2023-11-06 22:18:33,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:33,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 670 [2023-11-06 22:18:33,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:36,615 INFO L124 PetriNetUnfolderBase]: 22505/30815 cut-off events. [2023-11-06 22:18:36,615 INFO L125 PetriNetUnfolderBase]: For 22417/22417 co-relation queries the response was YES. [2023-11-06 22:18:36,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91574 conditions, 30815 events. 22505/30815 cut-off events. For 22417/22417 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 170663 event pairs, 4809 based on Foata normal form. 556/18419 useless extension candidates. Maximal degree in co-relation 91545. Up to 11217 conditions per place. [2023-11-06 22:18:36,862 INFO L140 encePairwiseOnDemand]: 659/670 looper letters, 195 selfloop transitions, 17 changer transitions 0/212 dead transitions. [2023-11-06 22:18:36,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 212 transitions, 1645 flow [2023-11-06 22:18:36,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:18:36,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:18:36,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1491 transitions. [2023-11-06 22:18:36,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4450746268656716 [2023-11-06 22:18:36,867 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1491 transitions. [2023-11-06 22:18:36,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1491 transitions. [2023-11-06 22:18:36,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:36,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1491 transitions. [2023-11-06 22:18:36,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.2) internal successors, (1491), 5 states have internal predecessors, (1491), 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) [2023-11-06 22:18:36,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 670.0) internal successors, (4020), 6 states have internal predecessors, (4020), 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) [2023-11-06 22:18:36,875 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 670.0) internal successors, (4020), 6 states have internal predecessors, (4020), 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) [2023-11-06 22:18:36,875 INFO L175 Difference]: Start difference. First operand has 87 places, 128 transitions, 880 flow. Second operand 5 states and 1491 transitions. [2023-11-06 22:18:36,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 212 transitions, 1645 flow [2023-11-06 22:18:36,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 212 transitions, 1644 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:36,916 INFO L231 Difference]: Finished difference. Result has 93 places, 144 transitions, 1059 flow [2023-11-06 22:18:36,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1059, PETRI_PLACES=93, PETRI_TRANSITIONS=144} [2023-11-06 22:18:36,917 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 26 predicate places. [2023-11-06 22:18:36,917 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 144 transitions, 1059 flow [2023-11-06 22:18:36,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 274.75) internal successors, (1099), 4 states have internal predecessors, (1099), 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) [2023-11-06 22:18:36,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:36,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:36,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:18:36,918 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:36,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:36,919 INFO L85 PathProgramCache]: Analyzing trace with hash -819258722, now seen corresponding path program 1 times [2023-11-06 22:18:36,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:36,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477102782] [2023-11-06 22:18:36,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:36,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:36,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:36,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:36,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477102782] [2023-11-06 22:18:36,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477102782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:36,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:36,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:36,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091709091] [2023-11-06 22:18:36,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:36,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:36,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:36,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:36,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:36,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 670 [2023-11-06 22:18:37,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 144 transitions, 1059 flow. Second operand has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 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) [2023-11-06 22:18:37,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:37,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 670 [2023-11-06 22:18:37,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:39,077 INFO L124 PetriNetUnfolderBase]: 13785/19247 cut-off events. [2023-11-06 22:18:39,077 INFO L125 PetriNetUnfolderBase]: For 25311/25311 co-relation queries the response was YES. [2023-11-06 22:18:39,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65298 conditions, 19247 events. 13785/19247 cut-off events. For 25311/25311 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 103102 event pairs, 5385 based on Foata normal form. 72/12107 useless extension candidates. Maximal degree in co-relation 65265. Up to 18669 conditions per place. [2023-11-06 22:18:39,244 INFO L140 encePairwiseOnDemand]: 666/670 looper letters, 151 selfloop transitions, 4 changer transitions 1/156 dead transitions. [2023-11-06 22:18:39,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 156 transitions, 1413 flow [2023-11-06 22:18:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 891 transitions. [2023-11-06 22:18:39,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44328358208955226 [2023-11-06 22:18:39,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 891 transitions. [2023-11-06 22:18:39,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 891 transitions. [2023-11-06 22:18:39,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:39,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 891 transitions. [2023-11-06 22:18:39,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 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) [2023-11-06 22:18:39,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:39,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:39,253 INFO L175 Difference]: Start difference. First operand has 93 places, 144 transitions, 1059 flow. Second operand 3 states and 891 transitions. [2023-11-06 22:18:39,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 156 transitions, 1413 flow [2023-11-06 22:18:39,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 156 transitions, 1413 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:18:39,315 INFO L231 Difference]: Finished difference. Result has 96 places, 144 transitions, 1070 flow [2023-11-06 22:18:39,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1070, PETRI_PLACES=96, PETRI_TRANSITIONS=144} [2023-11-06 22:18:39,316 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 29 predicate places. [2023-11-06 22:18:39,316 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 144 transitions, 1070 flow [2023-11-06 22:18:39,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 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) [2023-11-06 22:18:39,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:39,317 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-11-06 22:18:39,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:18:39,317 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:39,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:39,318 INFO L85 PathProgramCache]: Analyzing trace with hash -191973618, now seen corresponding path program 2 times [2023-11-06 22:18:39,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:39,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102756664] [2023-11-06 22:18:39,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:39,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:39,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:39,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102756664] [2023-11-06 22:18:39,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102756664] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:39,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483807815] [2023-11-06 22:18:39,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:18:39,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:39,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:39,529 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:39,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:18:39,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:18:39,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:18:39,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:18:39,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:39,709 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:18:39,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:39,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483807815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:39,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:18:39,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-11-06 22:18:39,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027807096] [2023-11-06 22:18:39,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:39,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:39,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:39,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:39,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:18:39,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 670 [2023-11-06 22:18:39,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 144 transitions, 1070 flow. Second operand has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 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) [2023-11-06 22:18:39,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:39,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 670 [2023-11-06 22:18:39,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:41,494 INFO L124 PetriNetUnfolderBase]: 10671/14891 cut-off events. [2023-11-06 22:18:41,494 INFO L125 PetriNetUnfolderBase]: For 23385/23385 co-relation queries the response was YES. [2023-11-06 22:18:41,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52719 conditions, 14891 events. 10671/14891 cut-off events. For 23385/23385 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 76123 event pairs, 6385 based on Foata normal form. 2/9861 useless extension candidates. Maximal degree in co-relation 52683. Up to 14846 conditions per place. [2023-11-06 22:18:41,621 INFO L140 encePairwiseOnDemand]: 665/670 looper letters, 119 selfloop transitions, 22 changer transitions 0/141 dead transitions. [2023-11-06 22:18:41,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 141 transitions, 1324 flow [2023-11-06 22:18:41,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:18:41,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:18:41,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1125 transitions. [2023-11-06 22:18:41,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4197761194029851 [2023-11-06 22:18:41,629 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1125 transitions. [2023-11-06 22:18:41,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1125 transitions. [2023-11-06 22:18:41,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:41,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1125 transitions. [2023-11-06 22:18:41,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 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) [2023-11-06 22:18:41,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 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) [2023-11-06 22:18:41,638 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 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) [2023-11-06 22:18:41,639 INFO L175 Difference]: Start difference. First operand has 96 places, 144 transitions, 1070 flow. Second operand 4 states and 1125 transitions. [2023-11-06 22:18:41,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 141 transitions, 1324 flow [2023-11-06 22:18:41,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 141 transitions, 1320 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:41,673 INFO L231 Difference]: Finished difference. Result has 95 places, 141 transitions, 1082 flow [2023-11-06 22:18:41,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1082, PETRI_PLACES=95, PETRI_TRANSITIONS=141} [2023-11-06 22:18:41,674 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 28 predicate places. [2023-11-06 22:18:41,674 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 141 transitions, 1082 flow [2023-11-06 22:18:41,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 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) [2023-11-06 22:18:41,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:41,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:41,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:41,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:18:41,880 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:41,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:41,881 INFO L85 PathProgramCache]: Analyzing trace with hash 172749068, now seen corresponding path program 1 times [2023-11-06 22:18:41,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:41,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848506118] [2023-11-06 22:18:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:41,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:41,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:41,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848506118] [2023-11-06 22:18:41,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848506118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:41,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:41,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:41,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753873472] [2023-11-06 22:18:41,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:41,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:41,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:41,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:41,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:41,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 670 [2023-11-06 22:18:41,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 141 transitions, 1082 flow. Second operand has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 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) [2023-11-06 22:18:41,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:41,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 670 [2023-11-06 22:18:41,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:44,025 INFO L124 PetriNetUnfolderBase]: 11301/15985 cut-off events. [2023-11-06 22:18:44,025 INFO L125 PetriNetUnfolderBase]: For 25614/25614 co-relation queries the response was YES. [2023-11-06 22:18:44,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57004 conditions, 15985 events. 11301/15985 cut-off events. For 25614/25614 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 86605 event pairs, 6069 based on Foata normal form. 0/10721 useless extension candidates. Maximal degree in co-relation 56967. Up to 12858 conditions per place. [2023-11-06 22:18:44,239 INFO L140 encePairwiseOnDemand]: 666/670 looper letters, 184 selfloop transitions, 3 changer transitions 0/187 dead transitions. [2023-11-06 22:18:44,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 187 transitions, 1771 flow [2023-11-06 22:18:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:44,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 912 transitions. [2023-11-06 22:18:44,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537313432835821 [2023-11-06 22:18:44,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 912 transitions. [2023-11-06 22:18:44,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 912 transitions. [2023-11-06 22:18:44,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:44,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 912 transitions. [2023-11-06 22:18:44,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.0) internal successors, (912), 3 states have internal predecessors, (912), 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) [2023-11-06 22:18:44,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:44,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-06 22:18:44,251 INFO L175 Difference]: Start difference. First operand has 95 places, 141 transitions, 1082 flow. Second operand 3 states and 912 transitions. [2023-11-06 22:18:44,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 187 transitions, 1771 flow [2023-11-06 22:18:44,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 187 transitions, 1748 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:44,314 INFO L231 Difference]: Finished difference. Result has 95 places, 140 transitions, 1061 flow [2023-11-06 22:18:44,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1061, PETRI_PLACES=95, PETRI_TRANSITIONS=140} [2023-11-06 22:18:44,315 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 28 predicate places. [2023-11-06 22:18:44,315 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 140 transitions, 1061 flow [2023-11-06 22:18:44,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 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) [2023-11-06 22:18:44,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:44,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:44,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:18:44,316 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:44,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:44,317 INFO L85 PathProgramCache]: Analyzing trace with hash 172749118, now seen corresponding path program 1 times [2023-11-06 22:18:44,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:44,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030939417] [2023-11-06 22:18:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:44,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:44,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:44,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030939417] [2023-11-06 22:18:44,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030939417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:44,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:44,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:44,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578264058] [2023-11-06 22:18:44,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:44,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:44,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:44,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:44,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:18:44,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 670 [2023-11-06 22:18:44,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 140 transitions, 1061 flow. Second operand has 4 states, 4 states have (on average 263.25) internal successors, (1053), 4 states have internal predecessors, (1053), 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) [2023-11-06 22:18:44,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:44,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 670 [2023-11-06 22:18:44,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:46,671 INFO L124 PetriNetUnfolderBase]: 12344/17659 cut-off events. [2023-11-06 22:18:46,671 INFO L125 PetriNetUnfolderBase]: For 30148/30148 co-relation queries the response was YES. [2023-11-06 22:18:46,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63489 conditions, 17659 events. 12344/17659 cut-off events. For 30148/30148 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 95951 event pairs, 8490 based on Foata normal form. 372/12783 useless extension candidates. Maximal degree in co-relation 63453. Up to 15973 conditions per place. [2023-11-06 22:18:46,819 INFO L140 encePairwiseOnDemand]: 662/670 looper letters, 168 selfloop transitions, 14 changer transitions 7/189 dead transitions. [2023-11-06 22:18:46,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 189 transitions, 1800 flow [2023-11-06 22:18:46,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:18:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:18:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1116 transitions. [2023-11-06 22:18:46,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4164179104477612 [2023-11-06 22:18:46,824 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1116 transitions. [2023-11-06 22:18:46,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1116 transitions. [2023-11-06 22:18:46,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:46,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1116 transitions. [2023-11-06 22:18:46,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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) [2023-11-06 22:18:46,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 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) [2023-11-06 22:18:46,830 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 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) [2023-11-06 22:18:46,830 INFO L175 Difference]: Start difference. First operand has 95 places, 140 transitions, 1061 flow. Second operand 4 states and 1116 transitions. [2023-11-06 22:18:46,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 189 transitions, 1800 flow [2023-11-06 22:18:46,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 189 transitions, 1796 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:46,876 INFO L231 Difference]: Finished difference. Result has 98 places, 140 transitions, 1097 flow [2023-11-06 22:18:46,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1097, PETRI_PLACES=98, PETRI_TRANSITIONS=140} [2023-11-06 22:18:46,877 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 31 predicate places. [2023-11-06 22:18:46,878 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 140 transitions, 1097 flow [2023-11-06 22:18:46,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 263.25) internal successors, (1053), 4 states have internal predecessors, (1053), 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) [2023-11-06 22:18:46,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:46,878 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:46,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:18:46,879 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:46,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1051134965, now seen corresponding path program 1 times [2023-11-06 22:18:46,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:46,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655933614] [2023-11-06 22:18:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:46,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:46,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:46,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655933614] [2023-11-06 22:18:46,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655933614] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:46,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071459538] [2023-11-06 22:18:46,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:46,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:46,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:46,952 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:46,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:18:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:47,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:18:47,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:47,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:47,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071459538] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:47,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:47,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-11-06 22:18:47,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105614367] [2023-11-06 22:18:47,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:47,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:18:47,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:47,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:18:47,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:18:47,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 670 [2023-11-06 22:18:47,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 140 transitions, 1097 flow. Second operand has 13 states, 13 states have (on average 253.53846153846155) internal successors, (3296), 13 states have internal predecessors, (3296), 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) [2023-11-06 22:18:47,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:47,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 670 [2023-11-06 22:18:47,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:52,419 INFO L124 PetriNetUnfolderBase]: 23299/33225 cut-off events. [2023-11-06 22:18:52,419 INFO L125 PetriNetUnfolderBase]: For 56064/56064 co-relation queries the response was YES. [2023-11-06 22:18:52,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121725 conditions, 33225 events. 23299/33225 cut-off events. For 56064/56064 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 195613 event pairs, 8252 based on Foata normal form. 752/24497 useless extension candidates. Maximal degree in co-relation 121688. Up to 13606 conditions per place. [2023-11-06 22:18:53,084 INFO L140 encePairwiseOnDemand]: 656/670 looper letters, 367 selfloop transitions, 22 changer transitions 13/402 dead transitions. [2023-11-06 22:18:53,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 402 transitions, 3506 flow [2023-11-06 22:18:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:18:53,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:18:53,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3978 transitions. [2023-11-06 22:18:53,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958208955223881 [2023-11-06 22:18:53,094 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3978 transitions. [2023-11-06 22:18:53,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3978 transitions. [2023-11-06 22:18:53,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:53,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3978 transitions. [2023-11-06 22:18:53,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 265.2) internal successors, (3978), 15 states have internal predecessors, (3978), 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) [2023-11-06 22:18:53,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 670.0) internal successors, (10720), 16 states have internal predecessors, (10720), 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) [2023-11-06 22:18:53,115 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 670.0) internal successors, (10720), 16 states have internal predecessors, (10720), 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) [2023-11-06 22:18:53,115 INFO L175 Difference]: Start difference. First operand has 98 places, 140 transitions, 1097 flow. Second operand 15 states and 3978 transitions. [2023-11-06 22:18:53,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 402 transitions, 3506 flow [2023-11-06 22:18:53,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 402 transitions, 3429 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:53,301 INFO L231 Difference]: Finished difference. Result has 118 places, 153 transitions, 1300 flow [2023-11-06 22:18:53,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1300, PETRI_PLACES=118, PETRI_TRANSITIONS=153} [2023-11-06 22:18:53,302 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 51 predicate places. [2023-11-06 22:18:53,302 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 153 transitions, 1300 flow [2023-11-06 22:18:53,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 253.53846153846155) internal successors, (3296), 13 states have internal predecessors, (3296), 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) [2023-11-06 22:18:53,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:53,304 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-11-06 22:18:53,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:53,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:53,505 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:18:53,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:53,505 INFO L85 PathProgramCache]: Analyzing trace with hash 332427252, now seen corresponding path program 1 times [2023-11-06 22:18:53,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:53,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544036703] [2023-11-06 22:18:53,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:53,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:53,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:53,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544036703] [2023-11-06 22:18:53,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544036703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:53,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196933749] [2023-11-06 22:18:53,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:53,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:53,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:53,757 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:53,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:18:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:53,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:18:53,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:53,966 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:53,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:54,198 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:54,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196933749] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:54,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:54,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-06 22:18:54,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428234082] [2023-11-06 22:18:54,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:54,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-06 22:18:54,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:54,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-06 22:18:54,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:18:54,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 670 [2023-11-06 22:18:54,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 153 transitions, 1300 flow. Second operand has 25 states, 25 states have (on average 266.12) internal successors, (6653), 25 states have internal predecessors, (6653), 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) [2023-11-06 22:18:54,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:54,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 670 [2023-11-06 22:18:54,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:00,319 INFO L124 PetriNetUnfolderBase]: 23323/33311 cut-off events. [2023-11-06 22:19:00,320 INFO L125 PetriNetUnfolderBase]: For 93097/93097 co-relation queries the response was YES. [2023-11-06 22:19:00,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128732 conditions, 33311 events. 23323/33311 cut-off events. For 93097/93097 co-relation queries the response was YES. Maximal size of possible extension queue 891. Compared 194722 event pairs, 15670 based on Foata normal form. 72/24391 useless extension candidates. Maximal degree in co-relation 128687. Up to 33009 conditions per place. [2023-11-06 22:19:00,621 INFO L140 encePairwiseOnDemand]: 662/670 looper letters, 77 selfloop transitions, 160 changer transitions 0/237 dead transitions. [2023-11-06 22:19:00,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 237 transitions, 2458 flow [2023-11-06 22:19:00,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:19:00,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:19:00,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6550 transitions. [2023-11-06 22:19:00,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40733830845771146 [2023-11-06 22:19:00,634 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6550 transitions. [2023-11-06 22:19:00,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6550 transitions. [2023-11-06 22:19:00,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:00,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6550 transitions. [2023-11-06 22:19:00,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 272.9166666666667) internal successors, (6550), 24 states have internal predecessors, (6550), 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) [2023-11-06 22:19:00,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 670.0) internal successors, (16750), 25 states have internal predecessors, (16750), 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) [2023-11-06 22:19:00,659 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 670.0) internal successors, (16750), 25 states have internal predecessors, (16750), 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) [2023-11-06 22:19:00,659 INFO L175 Difference]: Start difference. First operand has 118 places, 153 transitions, 1300 flow. Second operand 24 states and 6550 transitions. [2023-11-06 22:19:00,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 237 transitions, 2458 flow [2023-11-06 22:19:00,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 237 transitions, 2443 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-06 22:19:00,809 INFO L231 Difference]: Finished difference. Result has 151 places, 237 transitions, 2465 flow [2023-11-06 22:19:00,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2465, PETRI_PLACES=151, PETRI_TRANSITIONS=237} [2023-11-06 22:19:00,810 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 84 predicate places. [2023-11-06 22:19:00,810 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 237 transitions, 2465 flow [2023-11-06 22:19:00,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 266.12) internal successors, (6653), 25 states have internal predecessors, (6653), 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) [2023-11-06 22:19:00,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:00,811 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:00,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:01,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:01,012 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:19:01,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:01,013 INFO L85 PathProgramCache]: Analyzing trace with hash -975445556, now seen corresponding path program 1 times [2023-11-06 22:19:01,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:01,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313500321] [2023-11-06 22:19:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:01,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:19:01,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:01,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313500321] [2023-11-06 22:19:01,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313500321] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:01,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40334780] [2023-11-06 22:19:01,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:01,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:01,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:01,104 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:01,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:19:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:01,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:19:01,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:19:01,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:01,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40334780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:01,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:19:01,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:19:01,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769911159] [2023-11-06 22:19:01,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:01,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:19:01,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:01,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:19:01,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:01,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 670 [2023-11-06 22:19:01,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 237 transitions, 2465 flow. Second operand has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 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) [2023-11-06 22:19:01,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:01,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 670 [2023-11-06 22:19:01,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:06,808 INFO L124 PetriNetUnfolderBase]: 21695/31195 cut-off events. [2023-11-06 22:19:06,808 INFO L125 PetriNetUnfolderBase]: For 84250/84250 co-relation queries the response was YES. [2023-11-06 22:19:07,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119086 conditions, 31195 events. 21695/31195 cut-off events. For 84250/84250 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 182310 event pairs, 8010 based on Foata normal form. 976/23587 useless extension candidates. Maximal degree in co-relation 119028. Up to 25254 conditions per place. [2023-11-06 22:19:07,156 INFO L140 encePairwiseOnDemand]: 667/670 looper letters, 274 selfloop transitions, 4 changer transitions 1/279 dead transitions. [2023-11-06 22:19:07,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 279 transitions, 3209 flow [2023-11-06 22:19:07,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:19:07,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:19:07,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1200 transitions. [2023-11-06 22:19:07,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44776119402985076 [2023-11-06 22:19:07,159 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1200 transitions. [2023-11-06 22:19:07,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1200 transitions. [2023-11-06 22:19:07,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:07,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1200 transitions. [2023-11-06 22:19:07,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 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) [2023-11-06 22:19:07,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 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) [2023-11-06 22:19:07,163 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 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) [2023-11-06 22:19:07,163 INFO L175 Difference]: Start difference. First operand has 151 places, 237 transitions, 2465 flow. Second operand 4 states and 1200 transitions. [2023-11-06 22:19:07,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 279 transitions, 3209 flow [2023-11-06 22:19:07,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 279 transitions, 2779 flow, removed 103 selfloop flow, removed 11 redundant places. [2023-11-06 22:19:07,322 INFO L231 Difference]: Finished difference. Result has 142 places, 235 transitions, 2021 flow [2023-11-06 22:19:07,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2021, PETRI_PLACES=142, PETRI_TRANSITIONS=235} [2023-11-06 22:19:07,323 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 75 predicate places. [2023-11-06 22:19:07,323 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 235 transitions, 2021 flow [2023-11-06 22:19:07,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 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) [2023-11-06 22:19:07,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:07,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:07,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:07,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:07,531 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:19:07,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:07,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1672034713, now seen corresponding path program 1 times [2023-11-06 22:19:07,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:07,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382773022] [2023-11-06 22:19:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:07,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:19:08,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:08,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382773022] [2023-11-06 22:19:08,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382773022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:08,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840800505] [2023-11-06 22:19:08,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:08,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:08,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:08,030 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:08,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:19:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:08,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:19:08,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:08,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,288 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:19:08,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,312 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:19:08,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,327 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:19:08,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,341 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:19:08,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,361 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:19:08,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,370 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:19:08,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,392 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:19:08,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,402 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:19:08,463 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:19:08,580 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:19:08,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 22:19:08,657 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:19:08,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,745 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:19:08,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:08,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:19:09,193 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-06 22:19:09,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-11-06 22:19:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:09,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:19:11,899 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:19:11,899 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-11-06 22:19:11,915 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:19:11,915 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 309 treesize of output 293 [2023-11-06 22:19:11,935 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2023-11-06 22:19:11,947 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 47 [2023-11-06 22:19:11,960 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 46 [2023-11-06 22:19:12,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:12,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840800505] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:19:12,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:19:12,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 25 [2023-11-06 22:19:12,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596393773] [2023-11-06 22:19:12,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:19:12,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:19:12,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:12,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:19:12,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=608, Unknown=10, NotChecked=0, Total=702 [2023-11-06 22:19:14,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 670 [2023-11-06 22:19:14,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 235 transitions, 2021 flow. Second operand has 27 states, 27 states have (on average 195.55555555555554) internal successors, (5280), 27 states have internal predecessors, (5280), 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) [2023-11-06 22:19:14,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:14,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 670 [2023-11-06 22:19:14,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:17,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:19:19,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:19:22,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:19:38,478 INFO L124 PetriNetUnfolderBase]: 25451/37329 cut-off events. [2023-11-06 22:19:38,479 INFO L125 PetriNetUnfolderBase]: For 86098/86098 co-relation queries the response was YES. [2023-11-06 22:19:38,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138656 conditions, 37329 events. 25451/37329 cut-off events. For 86098/86098 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 236752 event pairs, 11342 based on Foata normal form. 222/27254 useless extension candidates. Maximal degree in co-relation 138599. Up to 21706 conditions per place. [2023-11-06 22:19:38,930 INFO L140 encePairwiseOnDemand]: 648/670 looper letters, 773 selfloop transitions, 204 changer transitions 19/996 dead transitions. [2023-11-06 22:19:38,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 996 transitions, 9106 flow [2023-11-06 22:19:38,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-06 22:19:38,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2023-11-06 22:19:38,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 12541 transitions. [2023-11-06 22:19:38,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3019017814155031 [2023-11-06 22:19:38,948 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 12541 transitions. [2023-11-06 22:19:38,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 12541 transitions. [2023-11-06 22:19:38,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:38,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 12541 transitions. [2023-11-06 22:19:38,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 202.2741935483871) internal successors, (12541), 62 states have internal predecessors, (12541), 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) [2023-11-06 22:19:39,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 670.0) internal successors, (42210), 63 states have internal predecessors, (42210), 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) [2023-11-06 22:19:39,020 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 670.0) internal successors, (42210), 63 states have internal predecessors, (42210), 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) [2023-11-06 22:19:39,020 INFO L175 Difference]: Start difference. First operand has 142 places, 235 transitions, 2021 flow. Second operand 62 states and 12541 transitions. [2023-11-06 22:19:39,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 996 transitions, 9106 flow [2023-11-06 22:19:39,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 996 transitions, 9080 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:19:39,168 INFO L231 Difference]: Finished difference. Result has 218 places, 406 transitions, 4209 flow [2023-11-06 22:19:39,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=4209, PETRI_PLACES=218, PETRI_TRANSITIONS=406} [2023-11-06 22:19:39,169 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 151 predicate places. [2023-11-06 22:19:39,169 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 406 transitions, 4209 flow [2023-11-06 22:19:39,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 195.55555555555554) internal successors, (5280), 27 states have internal predecessors, (5280), 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) [2023-11-06 22:19:39,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:39,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:39,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:39,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:39,372 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:19:39,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1026051694, now seen corresponding path program 1 times [2023-11-06 22:19:39,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:39,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732340775] [2023-11-06 22:19:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:39,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:40,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:40,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:40,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732340775] [2023-11-06 22:19:40,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732340775] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:40,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979005220] [2023-11-06 22:19:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:40,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:40,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:40,720 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:40,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:19:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:40,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-06 22:19:40,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:40,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:40,953 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:19:40,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:40,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:40,973 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:19:40,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:40,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:40,986 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:19:41,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:41,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:41,012 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:19:41,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:41,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:41,030 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:19:41,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:41,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:41,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:41,057 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:19:41,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:41,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:41,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:41,079 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:19:41,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:41,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:41,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:41,108 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:19:41,168 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:19:41,266 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:19:41,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 22:19:41,346 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:19:41,436 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:19:41,517 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:19:41,650 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 22:19:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:41,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:19:42,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:19:42,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979005220] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:42,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:19:42,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 21 [2023-11-06 22:19:42,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283168886] [2023-11-06 22:19:42,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:42,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:19:42,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:42,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:19:42,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=392, Unknown=1, NotChecked=0, Total=462 [2023-11-06 22:19:44,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:19:46,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:19:48,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:19:50,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:19:50,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 670 [2023-11-06 22:19:50,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 406 transitions, 4209 flow. Second operand has 6 states, 6 states have (on average 247.33333333333334) internal successors, (1484), 6 states have internal predecessors, (1484), 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) [2023-11-06 22:19:50,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:50,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 670 [2023-11-06 22:19:50,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:58,986 INFO L124 PetriNetUnfolderBase]: 25593/37568 cut-off events. [2023-11-06 22:19:58,987 INFO L125 PetriNetUnfolderBase]: For 163689/163689 co-relation queries the response was YES. [2023-11-06 22:19:59,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164823 conditions, 37568 events. 25593/37568 cut-off events. For 163689/163689 co-relation queries the response was YES. Maximal size of possible extension queue 982. Compared 237608 event pairs, 7029 based on Foata normal form. 50/30477 useless extension candidates. Maximal degree in co-relation 164748. Up to 22406 conditions per place. [2023-11-06 22:19:59,574 INFO L140 encePairwiseOnDemand]: 655/670 looper letters, 364 selfloop transitions, 152 changer transitions 3/519 dead transitions. [2023-11-06 22:19:59,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 519 transitions, 6184 flow [2023-11-06 22:19:59,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:19:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:19:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1569 transitions. [2023-11-06 22:19:59,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902985074626866 [2023-11-06 22:19:59,578 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1569 transitions. [2023-11-06 22:19:59,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1569 transitions. [2023-11-06 22:19:59,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:59,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1569 transitions. [2023-11-06 22:19:59,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.5) internal successors, (1569), 6 states have internal predecessors, (1569), 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) [2023-11-06 22:19:59,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 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) [2023-11-06 22:19:59,585 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 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) [2023-11-06 22:19:59,585 INFO L175 Difference]: Start difference. First operand has 218 places, 406 transitions, 4209 flow. Second operand 6 states and 1569 transitions. [2023-11-06 22:19:59,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 519 transitions, 6184 flow [2023-11-06 22:20:00,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 519 transitions, 5875 flow, removed 138 selfloop flow, removed 7 redundant places. [2023-11-06 22:20:00,487 INFO L231 Difference]: Finished difference. Result has 220 places, 445 transitions, 4846 flow [2023-11-06 22:20:00,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=3917, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4846, PETRI_PLACES=220, PETRI_TRANSITIONS=445} [2023-11-06 22:20:00,488 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 153 predicate places. [2023-11-06 22:20:00,488 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 445 transitions, 4846 flow [2023-11-06 22:20:00,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 247.33333333333334) internal successors, (1484), 6 states have internal predecessors, (1484), 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) [2023-11-06 22:20:00,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:00,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:00,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:00,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:00,689 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-06 22:20:00,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:00,690 INFO L85 PathProgramCache]: Analyzing trace with hash -541650034, now seen corresponding path program 2 times [2023-11-06 22:20:00,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:00,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917547732] [2023-11-06 22:20:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:00,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:01,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:20:01,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:01,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917547732] [2023-11-06 22:20:01,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917547732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:01,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522173109] [2023-11-06 22:20:01,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:20:01,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:01,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:01,320 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:01,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbf433-4b00-4b50-aab9-a78b8820818e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:20:01,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:20:01,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:20:01,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:20:01,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:01,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:20:01,720 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:20:01,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-06 22:20:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:20:01,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:20:01,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522173109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:01,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:20:01,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-11-06 22:20:01,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596068327] [2023-11-06 22:20:01,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:01,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:20:01,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:01,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:20:01,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:20:02,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 670 [2023-11-06 22:20:02,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 445 transitions, 4846 flow. Second operand has 8 states, 8 states have (on average 254.75) internal successors, (2038), 8 states have internal predecessors, (2038), 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) [2023-11-06 22:20:02,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:02,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 670 [2023-11-06 22:20:02,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand