./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 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_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/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_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/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_31b60414-c1c1-4ec6-92da-894ca5f479df/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 a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:30:23,375 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:30:23,499 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:30:23,509 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:30:23,510 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:30:23,549 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:30:23,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:30:23,551 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:30:23,552 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:30:23,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:30:23,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:30:23,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:30:23,560 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:30:23,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:30:23,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:30:23,562 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:30:23,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:30:23,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:30:23,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:30:23,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:30:23,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:30:23,566 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:30:23,566 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:30:23,568 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:30:23,569 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:30:23,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:30:23,569 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:30:23,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:30:23,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:30:23,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:30:23,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:30:23,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:30:23,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:30:23,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:30:23,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:30:23,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:30:23,575 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:30:23,575 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:30:23,575 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:30:23,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:30:23,576 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:30:23,576 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_31b60414-c1c1-4ec6-92da-894ca5f479df/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 [2023-11-06 22:30:23,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:30:23,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:30:23,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:30:23,903 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:30:23,904 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:30:23,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2023-11-06 22:30:27,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:30:27,206 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:30:27,206 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2023-11-06 22:30:27,216 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/data/ac49dcb2d/66837acdb66848d399d0ed1f99a83c30/FLAG708f66e3f [2023-11-06 22:30:27,232 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/data/ac49dcb2d/66837acdb66848d399d0ed1f99a83c30 [2023-11-06 22:30:27,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:30:27,236 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:30:27,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:30:27,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:30:27,244 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:30:27,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:30:27" (1/1) ... [2023-11-06 22:30:27,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d71cd6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:27, skipping insertion in model container [2023-11-06 22:30:27,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:30:27" (1/1) ... [2023-11-06 22:30:27,272 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:30:27,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:30:27,514 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:30:27,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:30:27,569 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:30:27,569 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:30:27,577 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:30:27,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:27 WrapperNode [2023-11-06 22:30:27,577 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:30:27,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:30:27,579 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:30:27,579 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:30:27,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:27" (1/1) ... [2023-11-06 22:30:27,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:27" (1/1) ... [2023-11-06 22:30:27,622 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 108 [2023-11-06 22:30:27,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:30:27,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:30:27,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:30:27,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:30:27,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:27" (1/1) ... [2023-11-06 22:30:27,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:27" (1/1) ... [2023-11-06 22:30:27,639 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:27" (1/1) ... [2023-11-06 22:30:27,639 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:27" (1/1) ... [2023-11-06 22:30:27,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:27" (1/1) ... [2023-11-06 22:30:27,653 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:27" (1/1) ... [2023-11-06 22:30:27,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:27" (1/1) ... [2023-11-06 22:30:27,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:27" (1/1) ... [2023-11-06 22:30:27,661 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:30:27,662 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:30:27,662 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:30:27,662 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:30:27,663 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:27" (1/1) ... [2023-11-06 22:30:27,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:30:27,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:27,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:30:27,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:30:27,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:30:27,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:30:27,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:30:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:30:27,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:30:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:30:27,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:30:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:30:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:30:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:30:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:30:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:30:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:30:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:30:27,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:30:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:30:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:30:27,744 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 22:30:27,863 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:30:27,865 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:30:28,275 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:30:28,386 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:30:28,386 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:30:28,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:30:28 BoogieIcfgContainer [2023-11-06 22:30:28,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:30:28,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:30:28,393 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:30:28,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:30:28,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:30:27" (1/3) ... [2023-11-06 22:30:28,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b916c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:30:28, skipping insertion in model container [2023-11-06 22:30:28,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:27" (2/3) ... [2023-11-06 22:30:28,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b916c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:30:28, skipping insertion in model container [2023-11-06 22:30:28,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:30:28" (3/3) ... [2023-11-06 22:30:28,405 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2023-11-06 22:30:28,414 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:30:28,426 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:30:28,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 22:30:28,426 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:30:28,557 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:30:28,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 174 transitions, 369 flow [2023-11-06 22:30:28,704 INFO L124 PetriNetUnfolderBase]: 12/171 cut-off events. [2023-11-06 22:30:28,705 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:30:28,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 171 events. 12/171 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 153 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 126. Up to 2 conditions per place. [2023-11-06 22:30:28,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 174 transitions, 369 flow [2023-11-06 22:30:28,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 147 transitions, 309 flow [2023-11-06 22:30:28,723 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:30:28,733 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 147 transitions, 309 flow [2023-11-06 22:30:28,736 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 147 transitions, 309 flow [2023-11-06 22:30:28,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 147 transitions, 309 flow [2023-11-06 22:30:28,792 INFO L124 PetriNetUnfolderBase]: 11/147 cut-off events. [2023-11-06 22:30:28,792 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:30:28,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 147 events. 11/147 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 150 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 126. Up to 2 conditions per place. [2023-11-06 22:30:28,797 INFO L119 LiptonReduction]: Number of co-enabled transitions 2430 [2023-11-06 22:30:36,735 INFO L134 LiptonReduction]: Checked pairs total: 2652 [2023-11-06 22:30:36,735 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-11-06 22:30:36,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:30:36,766 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;@4bedd226, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:30:36,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 22:30:36,770 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:30:36,771 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:30:36,771 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:30:36,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:36,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:30:36,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:30:36,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:36,778 INFO L85 PathProgramCache]: Analyzing trace with hash 21990, now seen corresponding path program 1 times [2023-11-06 22:30:36,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:36,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116346087] [2023-11-06 22:30:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:36,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:37,116 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 22:30:37,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:37,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116346087] [2023-11-06 22:30:37,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116346087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:37,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:37,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:30:37,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631454679] [2023-11-06 22:30:37,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:37,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:37,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:37,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:37,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:37,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 327 [2023-11-06 22:30:37,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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 22:30:37,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:37,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 327 [2023-11-06 22:30:37,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:37,540 INFO L124 PetriNetUnfolderBase]: 1218/1593 cut-off events. [2023-11-06 22:30:37,540 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-11-06 22:30:37,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3252 conditions, 1593 events. 1218/1593 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6041 event pairs, 577 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 2727. Up to 1562 conditions per place. [2023-11-06 22:30:37,559 INFO L140 encePairwiseOnDemand]: 322/327 looper letters, 26 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-11-06 22:30:37,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 137 flow [2023-11-06 22:30:37,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:30:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2023-11-06 22:30:37,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49337410805300713 [2023-11-06 22:30:37,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2023-11-06 22:30:37,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2023-11-06 22:30:37,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:37,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2023-11-06 22:30:37,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 22:30:37,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:37,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:37,599 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 75 flow. Second operand 3 states and 484 transitions. [2023-11-06 22:30:37,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 137 flow [2023-11-06 22:30:37,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:30:37,608 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 87 flow [2023-11-06 22:30:37,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-11-06 22:30:37,614 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-06 22:30:37,614 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 87 flow [2023-11-06 22:30:37,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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 22:30:37,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:37,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:30:37,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:30:37,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:30:37,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:37,616 INFO L85 PathProgramCache]: Analyzing trace with hash 683127, now seen corresponding path program 1 times [2023-11-06 22:30:37,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:37,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298484230] [2023-11-06 22:30:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:37,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:37,759 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 22:30:37,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:37,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298484230] [2023-11-06 22:30:37,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298484230] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:37,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140175944] [2023-11-06 22:30:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:37,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:37,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:37,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:37,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:30:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:37,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:30:37,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:37,968 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 22:30:37,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:37,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140175944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:37,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:30:37,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 22:30:37,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413722281] [2023-11-06 22:30:37,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:37,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:30:37,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:37,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:30:37,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:30:38,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 327 [2023-11-06 22:30:38,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 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 22:30:38,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:38,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 327 [2023-11-06 22:30:38,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:38,380 INFO L124 PetriNetUnfolderBase]: 1218/1592 cut-off events. [2023-11-06 22:30:38,381 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:30:38,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3221 conditions, 1592 events. 1218/1592 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6046 event pairs, 577 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 3197. Up to 1558 conditions per place. [2023-11-06 22:30:38,397 INFO L140 encePairwiseOnDemand]: 323/327 looper letters, 24 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2023-11-06 22:30:38,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 139 flow [2023-11-06 22:30:38,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:30:38,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:30:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 633 transitions. [2023-11-06 22:30:38,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48394495412844035 [2023-11-06 22:30:38,402 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 633 transitions. [2023-11-06 22:30:38,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 633 transitions. [2023-11-06 22:30:38,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:38,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 633 transitions. [2023-11-06 22:30:38,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 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 22:30:38,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 327.0) internal successors, (1635), 5 states have internal predecessors, (1635), 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 22:30:38,411 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 327.0) internal successors, (1635), 5 states have internal predecessors, (1635), 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 22:30:38,411 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 87 flow. Second operand 4 states and 633 transitions. [2023-11-06 22:30:38,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 139 flow [2023-11-06 22:30:38,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 134 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:30:38,413 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 86 flow [2023-11-06 22:30:38,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-11-06 22:30:38,414 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-11-06 22:30:38,415 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 86 flow [2023-11-06 22:30:38,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 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 22:30:38,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:38,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:30:38,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:38,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:38,622 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:30:38,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:38,623 INFO L85 PathProgramCache]: Analyzing trace with hash 683137, now seen corresponding path program 1 times [2023-11-06 22:30:38,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:38,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740113750] [2023-11-06 22:30:38,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:38,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:38,716 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 22:30:38,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:38,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740113750] [2023-11-06 22:30:38,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740113750] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:38,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633180203] [2023-11-06 22:30:38,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:38,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:38,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:38,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:38,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:30:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:38,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:30:38,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:38,811 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 22:30:38,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:30:38,829 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 22:30:38,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633180203] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:30:38,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:30:38,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:30:38,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309120582] [2023-11-06 22:30:38,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:30:38,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:30:38,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:38,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:30:38,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:30:38,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 327 [2023-11-06 22:30:38,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 152.14285714285714) internal successors, (1065), 7 states have internal predecessors, (1065), 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 22:30:38,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:38,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 327 [2023-11-06 22:30:38,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:39,160 INFO L124 PetriNetUnfolderBase]: 1221/1598 cut-off events. [2023-11-06 22:30:39,160 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:30:39,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3243 conditions, 1598 events. 1221/1598 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6075 event pairs, 577 based on Foata normal form. 0/567 useless extension candidates. Maximal degree in co-relation 3197. Up to 1564 conditions per place. [2023-11-06 22:30:39,176 INFO L140 encePairwiseOnDemand]: 323/327 looper letters, 25 selfloop transitions, 9 changer transitions 0/37 dead transitions. [2023-11-06 22:30:39,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 37 transitions, 184 flow [2023-11-06 22:30:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:30:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:30:39,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 943 transitions. [2023-11-06 22:30:39,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48063200815494395 [2023-11-06 22:30:39,181 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 943 transitions. [2023-11-06 22:30:39,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 943 transitions. [2023-11-06 22:30:39,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:39,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 943 transitions. [2023-11-06 22:30:39,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 157.16666666666666) internal successors, (943), 6 states have internal predecessors, (943), 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 22:30:39,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 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 22:30:39,194 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 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 22:30:39,194 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 86 flow. Second operand 6 states and 943 transitions. [2023-11-06 22:30:39,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 37 transitions, 184 flow [2023-11-06 22:30:39,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:30:39,197 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 144 flow [2023-11-06 22:30:39,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-06 22:30:39,198 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2023-11-06 22:30:39,198 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 144 flow [2023-11-06 22:30:39,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.14285714285714) internal successors, (1065), 7 states have internal predecessors, (1065), 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 22:30:39,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:39,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:30:39,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:39,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 22:30:39,404 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:30:39,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:39,405 INFO L85 PathProgramCache]: Analyzing trace with hash 656312284, now seen corresponding path program 1 times [2023-11-06 22:30:39,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:39,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115896570] [2023-11-06 22:30:39,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:39,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:39,466 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 22:30:39,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:39,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115896570] [2023-11-06 22:30:39,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115896570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:39,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:39,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:30:39,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350058064] [2023-11-06 22:30:39,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:39,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:39,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:39,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:39,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:39,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 327 [2023-11-06 22:30:39,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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 22:30:39,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:39,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 327 [2023-11-06 22:30:39,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:39,754 INFO L124 PetriNetUnfolderBase]: 1340/1779 cut-off events. [2023-11-06 22:30:39,754 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:30:39,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3636 conditions, 1779 events. 1340/1779 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 7326 event pairs, 580 based on Foata normal form. 0/712 useless extension candidates. Maximal degree in co-relation 3600. Up to 1483 conditions per place. [2023-11-06 22:30:39,769 INFO L140 encePairwiseOnDemand]: 322/327 looper letters, 47 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-11-06 22:30:39,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 277 flow [2023-11-06 22:30:39,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:39,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:30:39,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-11-06 22:30:39,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127420998980632 [2023-11-06 22:30:39,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-11-06 22:30:39,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-11-06 22:30:39,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:39,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-11-06 22:30:39,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 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 22:30:39,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:39,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:39,779 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 144 flow. Second operand 3 states and 503 transitions. [2023-11-06 22:30:39,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 277 flow [2023-11-06 22:30:39,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 256 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 22:30:39,783 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 144 flow [2023-11-06 22:30:39,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-11-06 22:30:39,784 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-11-06 22:30:39,784 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 144 flow [2023-11-06 22:30:39,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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 22:30:39,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:39,785 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:30:39,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:30:39,785 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:30:39,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:39,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1122373072, now seen corresponding path program 2 times [2023-11-06 22:30:39,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:39,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441563513] [2023-11-06 22:30:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:39,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:39,930 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 22:30:39,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:39,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441563513] [2023-11-06 22:30:39,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441563513] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:39,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245695123] [2023-11-06 22:30:39,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:30:39,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:39,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:39,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:39,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:30:40,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:30:40,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:30:40,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:30:40,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:40,052 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 22:30:40,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:40,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245695123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:40,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:30:40,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:30:40,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213620253] [2023-11-06 22:30:40,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:40,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:40,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:40,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:40,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:30:40,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 327 [2023-11-06 22:30:40,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 22:30:40,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:40,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 327 [2023-11-06 22:30:40,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:40,301 INFO L124 PetriNetUnfolderBase]: 1121/1498 cut-off events. [2023-11-06 22:30:40,301 INFO L125 PetriNetUnfolderBase]: For 128/183 co-relation queries the response was YES. [2023-11-06 22:30:40,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3499 conditions, 1498 events. 1121/1498 cut-off events. For 128/183 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6006 event pairs, 580 based on Foata normal form. 56/625 useless extension candidates. Maximal degree in co-relation 3472. Up to 1464 conditions per place. [2023-11-06 22:30:40,314 INFO L140 encePairwiseOnDemand]: 324/327 looper letters, 29 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2023-11-06 22:30:40,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 204 flow [2023-11-06 22:30:40,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:40,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:30:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-11-06 22:30:40,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943934760448522 [2023-11-06 22:30:40,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-11-06 22:30:40,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-11-06 22:30:40,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:40,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-11-06 22:30:40,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 22:30:40,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:40,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:40,326 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 144 flow. Second operand 3 states and 485 transitions. [2023-11-06 22:30:40,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 204 flow [2023-11-06 22:30:40,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 183 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-06 22:30:40,328 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 125 flow [2023-11-06 22:30:40,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-11-06 22:30:40,329 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-11-06 22:30:40,330 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 125 flow [2023-11-06 22:30:40,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 22:30:40,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:40,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:30:40,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:40,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:40,536 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:30:40,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:40,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1129154516, now seen corresponding path program 1 times [2023-11-06 22:30:40,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:40,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47158693] [2023-11-06 22:30:40,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:40,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:40,675 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 22:30:40,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:40,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47158693] [2023-11-06 22:30:40,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47158693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:40,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:40,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:30:40,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910941933] [2023-11-06 22:30:40,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:40,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:40,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:40,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:40,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:40,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 327 [2023-11-06 22:30:40,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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 22:30:40,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:40,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 327 [2023-11-06 22:30:40,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:40,954 INFO L124 PetriNetUnfolderBase]: 1120/1497 cut-off events. [2023-11-06 22:30:40,955 INFO L125 PetriNetUnfolderBase]: For 125/180 co-relation queries the response was YES. [2023-11-06 22:30:40,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3319 conditions, 1497 events. 1120/1497 cut-off events. For 125/180 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 5940 event pairs, 580 based on Foata normal form. 56/680 useless extension candidates. Maximal degree in co-relation 3282. Up to 1468 conditions per place. [2023-11-06 22:30:40,967 INFO L140 encePairwiseOnDemand]: 324/327 looper letters, 32 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-11-06 22:30:40,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 187 flow [2023-11-06 22:30:40,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:40,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:30:40,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2023-11-06 22:30:40,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831804281345566 [2023-11-06 22:30:40,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2023-11-06 22:30:40,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2023-11-06 22:30:40,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:40,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2023-11-06 22:30:40,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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 22:30:40,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:40,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:40,976 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 125 flow. Second operand 3 states and 474 transitions. [2023-11-06 22:30:40,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 187 flow [2023-11-06 22:30:40,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:30:40,981 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 113 flow [2023-11-06 22:30:40,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-11-06 22:30:40,984 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-11-06 22:30:40,985 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 113 flow [2023-11-06 22:30:40,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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 22:30:40,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:40,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:40,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:30:40,988 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:30:40,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:40,995 INFO L85 PathProgramCache]: Analyzing trace with hash -440607153, now seen corresponding path program 1 times [2023-11-06 22:30:40,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:40,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142507657] [2023-11-06 22:30:40,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:40,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:41,057 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 22:30:41,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:41,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142507657] [2023-11-06 22:30:41,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142507657] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:41,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258580603] [2023-11-06 22:30:41,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:41,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:41,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:41,061 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:41,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:30:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:41,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:30:41,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:41,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:30:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:41,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258580603] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:30:41,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:30:41,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-11-06 22:30:41,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763143134] [2023-11-06 22:30:41,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:30:41,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:30:41,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:41,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:30:41,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:30:41,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 327 [2023-11-06 22:30:41,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 113 flow. Second operand has 13 states, 13 states have (on average 142.53846153846155) internal successors, (1853), 13 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:41,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:41,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 327 [2023-11-06 22:30:41,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:42,144 INFO L124 PetriNetUnfolderBase]: 2499/3278 cut-off events. [2023-11-06 22:30:42,144 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2023-11-06 22:30:42,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7337 conditions, 3278 events. 2499/3278 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 14160 event pairs, 574 based on Foata normal form. 0/1528 useless extension candidates. Maximal degree in co-relation 7324. Up to 1185 conditions per place. [2023-11-06 22:30:42,180 INFO L140 encePairwiseOnDemand]: 318/327 looper letters, 95 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2023-11-06 22:30:42,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 111 transitions, 509 flow [2023-11-06 22:30:42,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:30:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:30:42,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1381 transitions. [2023-11-06 22:30:42,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692490655793408 [2023-11-06 22:30:42,189 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1381 transitions. [2023-11-06 22:30:42,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1381 transitions. [2023-11-06 22:30:42,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:42,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1381 transitions. [2023-11-06 22:30:42,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.44444444444446) internal successors, (1381), 9 states have internal predecessors, (1381), 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 22:30:42,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 22:30:42,204 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 22:30:42,204 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 113 flow. Second operand 9 states and 1381 transitions. [2023-11-06 22:30:42,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 111 transitions, 509 flow [2023-11-06 22:30:42,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 111 transitions, 505 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:30:42,237 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 203 flow [2023-11-06 22:30:42,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=203, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2023-11-06 22:30:42,238 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-11-06 22:30:42,238 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 203 flow [2023-11-06 22:30:42,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 142.53846153846155) internal successors, (1853), 13 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:42,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:42,239 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:30:42,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:42,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:42,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:30:42,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:42,440 INFO L85 PathProgramCache]: Analyzing trace with hash -504883734, now seen corresponding path program 1 times [2023-11-06 22:30:42,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:42,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478825756] [2023-11-06 22:30:42,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:42,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:30:42,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:42,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478825756] [2023-11-06 22:30:42,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478825756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:42,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435597451] [2023-11-06 22:30:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:42,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:42,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:42,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:42,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:30:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:42,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:30:42,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:42,646 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 22:30:42,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:42,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435597451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:42,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:30:42,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-11-06 22:30:42,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672374941] [2023-11-06 22:30:42,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:42,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:30:42,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:42,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:30:42,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:30:42,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 327 [2023-11-06 22:30:42,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 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 22:30:42,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:42,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 327 [2023-11-06 22:30:42,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:43,206 INFO L124 PetriNetUnfolderBase]: 2308/3025 cut-off events. [2023-11-06 22:30:43,206 INFO L125 PetriNetUnfolderBase]: For 2394/2397 co-relation queries the response was YES. [2023-11-06 22:30:43,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8338 conditions, 3025 events. 2308/3025 cut-off events. For 2394/2397 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12718 event pairs, 214 based on Foata normal form. 126/1832 useless extension candidates. Maximal degree in co-relation 5668. Up to 1405 conditions per place. [2023-11-06 22:30:43,230 INFO L140 encePairwiseOnDemand]: 323/327 looper letters, 69 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2023-11-06 22:30:43,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 450 flow [2023-11-06 22:30:43,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:30:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:30:43,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 835 transitions. [2023-11-06 22:30:43,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5107033639143731 [2023-11-06 22:30:43,234 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 835 transitions. [2023-11-06 22:30:43,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 835 transitions. [2023-11-06 22:30:43,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:43,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 835 transitions. [2023-11-06 22:30:43,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 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 22:30:43,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 327.0) internal successors, (1962), 6 states have internal predecessors, (1962), 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 22:30:43,243 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 327.0) internal successors, (1962), 6 states have internal predecessors, (1962), 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 22:30:43,243 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 203 flow. Second operand 5 states and 835 transitions. [2023-11-06 22:30:43,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 450 flow [2023-11-06 22:30:43,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 81 transitions, 427 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-06 22:30:43,254 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 184 flow [2023-11-06 22:30:43,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-06 22:30:43,255 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-11-06 22:30:43,255 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 184 flow [2023-11-06 22:30:43,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 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 22:30:43,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:43,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:43,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:43,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:43,462 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:30:43,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:43,462 INFO L85 PathProgramCache]: Analyzing trace with hash -768902751, now seen corresponding path program 1 times [2023-11-06 22:30:43,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:43,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249725991] [2023-11-06 22:30:43,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:43,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:43,520 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 22:30:43,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:43,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249725991] [2023-11-06 22:30:43,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249725991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:43,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:43,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:30:43,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391584132] [2023-11-06 22:30:43,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:43,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:43,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:43,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:43,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:43,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 327 [2023-11-06 22:30:43,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 22:30:43,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:43,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 327 [2023-11-06 22:30:43,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:43,965 INFO L124 PetriNetUnfolderBase]: 2060/2777 cut-off events. [2023-11-06 22:30:43,965 INFO L125 PetriNetUnfolderBase]: For 3425/3572 co-relation queries the response was YES. [2023-11-06 22:30:43,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8059 conditions, 2777 events. 2060/2777 cut-off events. For 3425/3572 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11959 event pairs, 949 based on Foata normal form. 142/1901 useless extension candidates. Maximal degree in co-relation 5651. Up to 2322 conditions per place. [2023-11-06 22:30:43,984 INFO L140 encePairwiseOnDemand]: 322/327 looper letters, 57 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-11-06 22:30:43,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 63 transitions, 410 flow [2023-11-06 22:30:43,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:43,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:30:43,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-11-06 22:30:43,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509683995922528 [2023-11-06 22:30:43,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-11-06 22:30:43,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-11-06 22:30:43,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:43,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-11-06 22:30:43,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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 22:30:43,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:43,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:43,992 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 184 flow. Second operand 3 states and 500 transitions. [2023-11-06 22:30:43,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 63 transitions, 410 flow [2023-11-06 22:30:43,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 374 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 22:30:43,999 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 185 flow [2023-11-06 22:30:43,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-11-06 22:30:43,999 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-11-06 22:30:44,000 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 185 flow [2023-11-06 22:30:44,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 22:30:44,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:44,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:44,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:30:44,001 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:30:44,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:44,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1933819892, now seen corresponding path program 1 times [2023-11-06 22:30:44,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:44,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336422321] [2023-11-06 22:30:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:44,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:44,052 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 22:30:44,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:44,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336422321] [2023-11-06 22:30:44,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336422321] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:44,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627951317] [2023-11-06 22:30:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:44,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:44,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:44,054 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:44,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:30:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:44,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:30:44,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:44,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:30:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:44,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627951317] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:30:44,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:30:44,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-11-06 22:30:44,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869623513] [2023-11-06 22:30:44,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:30:44,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:30:44,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:44,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:30:44,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:30:44,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 327 [2023-11-06 22:30:44,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 185 flow. Second operand has 12 states, 12 states have (on average 141.16666666666666) internal successors, (1694), 12 states have internal predecessors, (1694), 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 22:30:44,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:44,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 327 [2023-11-06 22:30:44,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:45,184 INFO L124 PetriNetUnfolderBase]: 2566/3491 cut-off events. [2023-11-06 22:30:45,184 INFO L125 PetriNetUnfolderBase]: For 3313/3444 co-relation queries the response was YES. [2023-11-06 22:30:45,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10418 conditions, 3491 events. 2566/3491 cut-off events. For 3313/3444 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 16261 event pairs, 499 based on Foata normal form. 129/2363 useless extension candidates. Maximal degree in co-relation 9250. Up to 1517 conditions per place. [2023-11-06 22:30:45,210 INFO L140 encePairwiseOnDemand]: 319/327 looper letters, 106 selfloop transitions, 12 changer transitions 2/123 dead transitions. [2023-11-06 22:30:45,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 123 transitions, 725 flow [2023-11-06 22:30:45,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:30:45,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:30:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1351 transitions. [2023-11-06 22:30:45,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45905538566089027 [2023-11-06 22:30:45,216 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1351 transitions. [2023-11-06 22:30:45,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1351 transitions. [2023-11-06 22:30:45,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:45,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1351 transitions. [2023-11-06 22:30:45,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 150.11111111111111) internal successors, (1351), 9 states have internal predecessors, (1351), 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 22:30:45,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 22:30:45,230 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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 22:30:45,230 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 185 flow. Second operand 9 states and 1351 transitions. [2023-11-06 22:30:45,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 123 transitions, 725 flow [2023-11-06 22:30:45,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 123 transitions, 718 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:30:45,238 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 242 flow [2023-11-06 22:30:45,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=242, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-11-06 22:30:45,239 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2023-11-06 22:30:45,239 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 242 flow [2023-11-06 22:30:45,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 141.16666666666666) internal successors, (1694), 12 states have internal predecessors, (1694), 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 22:30:45,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:45,241 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:30:45,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:45,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:30:45,446 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:30:45,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:45,447 INFO L85 PathProgramCache]: Analyzing trace with hash -504883716, now seen corresponding path program 2 times [2023-11-06 22:30:45,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:45,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467255750] [2023-11-06 22:30:45,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:45,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:45,538 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 22:30:45,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:45,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467255750] [2023-11-06 22:30:45,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467255750] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:45,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888225683] [2023-11-06 22:30:45,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:30:45,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:45,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:45,541 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:45,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:30:45,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:30:45,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:30:45,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:30:45,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:30:45,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:45,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888225683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:45,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:30:45,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-06 22:30:45,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899620165] [2023-11-06 22:30:45,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:45,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:45,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:45,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:45,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:30:45,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 327 [2023-11-06 22:30:45,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 22:30:45,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:45,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 327 [2023-11-06 22:30:45,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:45,967 INFO L124 PetriNetUnfolderBase]: 1634/2243 cut-off events. [2023-11-06 22:30:45,967 INFO L125 PetriNetUnfolderBase]: For 3588/3914 co-relation queries the response was YES. [2023-11-06 22:30:45,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6867 conditions, 2243 events. 1634/2243 cut-off events. For 3588/3914 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9737 event pairs, 930 based on Foata normal form. 457/2011 useless extension candidates. Maximal degree in co-relation 6229. Up to 2220 conditions per place. [2023-11-06 22:30:45,984 INFO L140 encePairwiseOnDemand]: 324/327 looper letters, 41 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-11-06 22:30:45,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 47 transitions, 310 flow [2023-11-06 22:30:45,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:30:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-11-06 22:30:45,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954128440366973 [2023-11-06 22:30:45,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-11-06 22:30:45,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-11-06 22:30:45,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:45,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-11-06 22:30:45,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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 22:30:45,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:45,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:45,993 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 242 flow. Second operand 3 states and 486 transitions. [2023-11-06 22:30:45,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 47 transitions, 310 flow [2023-11-06 22:30:45,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 291 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:30:45,998 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 209 flow [2023-11-06 22:30:45,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2023-11-06 22:30:45,999 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-11-06 22:30:45,999 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 209 flow [2023-11-06 22:30:46,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 22:30:46,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:46,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:46,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:46,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:46,215 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:30:46,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:46,216 INFO L85 PathProgramCache]: Analyzing trace with hash -176323237, now seen corresponding path program 1 times [2023-11-06 22:30:46,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:46,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318835728] [2023-11-06 22:30:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:46,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:46,274 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 22:30:46,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:46,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318835728] [2023-11-06 22:30:46,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318835728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:46,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:46,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:46,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864011362] [2023-11-06 22:30:46,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:46,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:30:46,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:46,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:30:46,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:30:46,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 327 [2023-11-06 22:30:46,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 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 22:30:46,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:46,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 327 [2023-11-06 22:30:46,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:46,566 INFO L124 PetriNetUnfolderBase]: 1154/1639 cut-off events. [2023-11-06 22:30:46,567 INFO L125 PetriNetUnfolderBase]: For 1869/2134 co-relation queries the response was YES. [2023-11-06 22:30:46,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5225 conditions, 1639 events. 1154/1639 cut-off events. For 1869/2134 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6899 event pairs, 498 based on Foata normal form. 265/1616 useless extension candidates. Maximal degree in co-relation 5209. Up to 1064 conditions per place. [2023-11-06 22:30:46,576 INFO L140 encePairwiseOnDemand]: 323/327 looper letters, 42 selfloop transitions, 5 changer transitions 21/70 dead transitions. [2023-11-06 22:30:46,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 458 flow [2023-11-06 22:30:46,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:30:46,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:30:46,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 638 transitions. [2023-11-06 22:30:46,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4877675840978593 [2023-11-06 22:30:46,579 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 638 transitions. [2023-11-06 22:30:46,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 638 transitions. [2023-11-06 22:30:46,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:46,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 638 transitions. [2023-11-06 22:30:46,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.5) internal successors, (638), 4 states have internal predecessors, (638), 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 22:30:46,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 327.0) internal successors, (1635), 5 states have internal predecessors, (1635), 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 22:30:46,586 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 327.0) internal successors, (1635), 5 states have internal predecessors, (1635), 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 22:30:46,586 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 209 flow. Second operand 4 states and 638 transitions. [2023-11-06 22:30:46,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 458 flow [2023-11-06 22:30:46,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:30:46,591 INFO L231 Difference]: Finished difference. Result has 54 places, 34 transitions, 156 flow [2023-11-06 22:30:46,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2023-11-06 22:30:46,591 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2023-11-06 22:30:46,592 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 156 flow [2023-11-06 22:30:46,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 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 22:30:46,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:46,592 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:46,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:30:46,593 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:30:46,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:46,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1683969073, now seen corresponding path program 1 times [2023-11-06 22:30:46,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:46,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220096911] [2023-11-06 22:30:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:46,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:30:46,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:46,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220096911] [2023-11-06 22:30:46,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220096911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:46,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:46,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:30:46,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895190054] [2023-11-06 22:30:46,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:46,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:46,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:46,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:46,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:46,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 327 [2023-11-06 22:30:46,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 22:30:46,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:46,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 327 [2023-11-06 22:30:46,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:46,801 INFO L124 PetriNetUnfolderBase]: 703/980 cut-off events. [2023-11-06 22:30:46,801 INFO L125 PetriNetUnfolderBase]: For 1284/1323 co-relation queries the response was YES. [2023-11-06 22:30:46,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 980 events. 703/980 cut-off events. For 1284/1323 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3515 event pairs, 130 based on Foata normal form. 143/1059 useless extension candidates. Maximal degree in co-relation 3123. Up to 820 conditions per place. [2023-11-06 22:30:46,808 INFO L140 encePairwiseOnDemand]: 325/327 looper letters, 42 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-11-06 22:30:46,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 278 flow [2023-11-06 22:30:46,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:30:46,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-11-06 22:30:46,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4964322120285423 [2023-11-06 22:30:46,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-11-06 22:30:46,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-11-06 22:30:46,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:46,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-11-06 22:30:46,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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 22:30:46,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:46,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:46,817 INFO L175 Difference]: Start difference. First operand has 54 places, 34 transitions, 156 flow. Second operand 3 states and 487 transitions. [2023-11-06 22:30:46,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 278 flow [2023-11-06 22:30:46,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 245 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-06 22:30:46,822 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 116 flow [2023-11-06 22:30:46,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-11-06 22:30:46,823 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2023-11-06 22:30:46,823 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 116 flow [2023-11-06 22:30:46,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 22:30:46,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:46,824 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:46,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:30:46,824 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:30:46,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:46,825 INFO L85 PathProgramCache]: Analyzing trace with hash 663435666, now seen corresponding path program 2 times [2023-11-06 22:30:46,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:46,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681069479] [2023-11-06 22:30:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:46,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:46,889 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 22:30:46,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:46,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681069479] [2023-11-06 22:30:46,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681069479] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:46,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623231133] [2023-11-06 22:30:46,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:30:46,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:46,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:46,891 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:46,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:30:46,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:30:46,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:30:46,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:30:46,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:30:47,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:47,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623231133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:47,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:30:47,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-06 22:30:47,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022468946] [2023-11-06 22:30:47,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:47,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:47,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:47,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:47,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:30:47,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 327 [2023-11-06 22:30:47,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 22:30:47,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:47,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 327 [2023-11-06 22:30:47,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:47,132 INFO L124 PetriNetUnfolderBase]: 397/573 cut-off events. [2023-11-06 22:30:47,132 INFO L125 PetriNetUnfolderBase]: For 459/525 co-relation queries the response was YES. [2023-11-06 22:30:47,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 573 events. 397/573 cut-off events. For 459/525 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1970 event pairs, 220 based on Foata normal form. 66/549 useless extension candidates. Maximal degree in co-relation 1545. Up to 559 conditions per place. [2023-11-06 22:30:47,134 INFO L140 encePairwiseOnDemand]: 325/327 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2023-11-06 22:30:47,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 166 flow [2023-11-06 22:30:47,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:47,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:30:47,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-11-06 22:30:47,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48827726809378186 [2023-11-06 22:30:47,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-11-06 22:30:47,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-11-06 22:30:47,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:47,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-11-06 22:30:47,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 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 22:30:47,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:47,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 22:30:47,142 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 116 flow. Second operand 3 states and 479 transitions. [2023-11-06 22:30:47,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 166 flow [2023-11-06 22:30:47,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:30:47,144 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-11-06 22:30:47,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-11-06 22:30:47,145 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2023-11-06 22:30:47,145 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-11-06 22:30:47,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 22:30:47,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-11-06 22:30:47,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-06 22:30:47,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-06 22:30:47,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-06 22:30:47,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-06 22:30:47,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-06 22:30:47,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-06 22:30:47,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-06 22:30:47,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2023-11-06 22:30:47,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2023-11-06 22:30:47,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2023-11-06 22:30:47,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-06 22:30:47,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-06 22:30:47,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-06 22:30:47,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-06 22:30:47,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-06 22:30:47,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-06 22:30:47,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:47,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:47,358 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:47,362 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:30:47,362 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:30:47,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:30:47 BasicIcfg [2023-11-06 22:30:47,366 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:30:47,367 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:30:47,367 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:30:47,367 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:30:47,367 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:30:28" (3/4) ... [2023-11-06 22:30:47,369 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:30:47,372 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:30:47,373 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:30:47,373 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:30:47,379 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-06 22:30:47,380 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:30:47,380 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:30:47,381 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:30:47,455 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:30:47,456 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:30:47,456 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:30:47,457 INFO L158 Benchmark]: Toolchain (without parser) took 20220.40ms. Allocated memory was 176.2MB in the beginning and 308.3MB in the end (delta: 132.1MB). Free memory was 137.3MB in the beginning and 236.9MB in the end (delta: -99.6MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2023-11-06 22:30:47,457 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 127.9MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:30:47,457 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.92ms. Allocated memory is still 176.2MB. Free memory was 137.3MB in the beginning and 125.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:30:47,458 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.91ms. Allocated memory is still 176.2MB. Free memory was 125.4MB in the beginning and 123.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:30:47,458 INFO L158 Benchmark]: Boogie Preprocessor took 38.04ms. Allocated memory is still 176.2MB. Free memory was 123.9MB in the beginning and 121.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:30:47,459 INFO L158 Benchmark]: RCFGBuilder took 728.27ms. Allocated memory is still 176.2MB. Free memory was 121.9MB in the beginning and 100.2MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 22:30:47,459 INFO L158 Benchmark]: TraceAbstraction took 18972.93ms. Allocated memory was 176.2MB in the beginning and 308.3MB in the end (delta: 132.1MB). Free memory was 99.5MB in the beginning and 240.7MB in the end (delta: -141.2MB). Peak memory consumption was 143.7MB. Max. memory is 16.1GB. [2023-11-06 22:30:47,459 INFO L158 Benchmark]: Witness Printer took 89.54ms. Allocated memory is still 308.3MB. Free memory was 240.7MB in the beginning and 236.9MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:30:47,462 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 127.9MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.92ms. Allocated memory is still 176.2MB. Free memory was 137.3MB in the beginning and 125.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.91ms. Allocated memory is still 176.2MB. Free memory was 125.4MB in the beginning and 123.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.04ms. Allocated memory is still 176.2MB. Free memory was 123.9MB in the beginning and 121.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 728.27ms. Allocated memory is still 176.2MB. Free memory was 121.9MB in the beginning and 100.2MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 18972.93ms. Allocated memory was 176.2MB in the beginning and 308.3MB in the end (delta: 132.1MB). Free memory was 99.5MB in the beginning and 240.7MB in the end (delta: -141.2MB). Peak memory consumption was 143.7MB. Max. memory is 16.1GB. * Witness Printer took 89.54ms. Allocated memory is still 308.3MB. Free memory was 240.7MB in the beginning and 236.9MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.0s, 146 PlacesBefore, 36 PlacesAfterwards, 147 TransitionsBefore, 30 TransitionsAfterwards, 2430 CoEnabledTransitionPairs, 7 FixpointIterations, 77 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 6 ConcurrentYvCompositions, 7 ChoiceCompositions, 153 TotalNumberOfCompositions, 2652 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2419, independent: 2393, independent conditional: 0, independent unconditional: 2393, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1306, independent: 1296, independent conditional: 0, independent unconditional: 1296, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2419, independent: 1097, independent conditional: 0, independent unconditional: 1097, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 1306, unknown conditional: 0, unknown unconditional: 1306] , Statistics on independence cache: Total cache size (in pairs): 68, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 208 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.8s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1067 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 855 mSDsluCounter, 357 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 301 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2097 IncrementalHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 56 mSDtfsCounter, 2097 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=242occurred in iteration=10, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 155 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 389 SizeOfPredicates, 6 NumberOfNonLiveVariables, 893 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 25 InterpolantComputations, 11 PerfectInterpolantSequences, 52/80 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:30:47,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b60414-c1c1-4ec6-92da-894ca5f479df/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE