./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/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_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/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_7585af6e-321d-4d4d-8db3-82d8deac7c5a/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 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:15:12,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:15:12,513 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 21:15:12,518 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:15:12,519 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:15:12,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:15:12,552 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:15:12,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:15:12,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:15:12,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:15:12,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:15:12,557 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:15:12,558 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:15:12,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:15:12,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:15:12,560 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:15:12,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:15:12,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:15:12,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:15:12,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:15:12,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:15:12,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:15:12,569 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 21:15:12,569 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:15:12,570 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:15:12,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:15:12,571 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:15:12,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:15:12,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:15:12,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:15:12,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:15:12,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:15:12,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:15:12,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:15:12,575 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:15:12,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:15:12,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:15:12,576 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:15:12,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:15:12,577 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:15:12,577 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:15:12,580 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_7585af6e-321d-4d4d-8db3-82d8deac7c5a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f [2023-11-06 21:15:12,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:15:13,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:15:13,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:15:13,010 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:15:13,011 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:15:13,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2023-11-06 21:15:16,923 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:15:17,237 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:15:17,237 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2023-11-06 21:15:17,256 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/data/c46a4f017/1cdb56a3de064e3cb3ca78d0a3d17a2d/FLAGe9951fbdc [2023-11-06 21:15:17,275 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/data/c46a4f017/1cdb56a3de064e3cb3ca78d0a3d17a2d [2023-11-06 21:15:17,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:15:17,281 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:15:17,282 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:15:17,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:15:17,289 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:15:17,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:15:17" (1/1) ... [2023-11-06 21:15:17,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f79d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:17, skipping insertion in model container [2023-11-06 21:15:17,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:15:17" (1/1) ... [2023-11-06 21:15:17,325 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:15:17,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:15:17,611 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:15:17,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:15:17,663 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:15:17,664 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:15:17,674 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:15:17,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:17 WrapperNode [2023-11-06 21:15:17,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:15:17,676 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:15:17,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:15:17,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:15:17,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:17" (1/1) ... [2023-11-06 21:15:17,698 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:17" (1/1) ... [2023-11-06 21:15:17,744 INFO L138 Inliner]: procedures = 25, calls = 47, calls flagged for inlining = 14, calls inlined = 20, statements flattened = 311 [2023-11-06 21:15:17,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:15:17,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:15:17,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:15:17,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:15:17,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:17" (1/1) ... [2023-11-06 21:15:17,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:17" (1/1) ... [2023-11-06 21:15:17,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:17" (1/1) ... [2023-11-06 21:15:17,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:17" (1/1) ... [2023-11-06 21:15:17,781 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:17" (1/1) ... [2023-11-06 21:15:17,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:17" (1/1) ... [2023-11-06 21:15:17,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:17" (1/1) ... [2023-11-06 21:15:17,794 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:17" (1/1) ... [2023-11-06 21:15:17,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:15:17,801 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:15:17,801 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:15:17,802 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:15:17,803 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:17" (1/1) ... [2023-11-06 21:15:17,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:15:17,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:17,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:17,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:15:17,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:15:17,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:15:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:15:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:15:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:15:17,898 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:15:17,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:15:17,898 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:15:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 21:15:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 21:15:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:15:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:15:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:15:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:15:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:15:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:15:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:15:17,903 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 21:15:18,069 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:15:18,073 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:15:18,899 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:15:19,930 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:15:19,930 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 21:15:19,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:19 BoogieIcfgContainer [2023-11-06 21:15:19,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:15:19,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:15:19,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:15:19,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:15:19,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:15:17" (1/3) ... [2023-11-06 21:15:19,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a5688a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:15:19, skipping insertion in model container [2023-11-06 21:15:19,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:17" (2/3) ... [2023-11-06 21:15:19,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a5688a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:15:19, skipping insertion in model container [2023-11-06 21:15:19,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:19" (3/3) ... [2023-11-06 21:15:19,958 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2023-11-06 21:15:19,970 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:15:19,984 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:15:19,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-06 21:15:19,984 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:15:20,462 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 21:15:20,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 327 transitions, 675 flow [2023-11-06 21:15:20,835 INFO L124 PetriNetUnfolderBase]: 23/324 cut-off events. [2023-11-06 21:15:20,835 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:15:20,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 324 events. 23/324 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 797 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2023-11-06 21:15:20,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 327 transitions, 675 flow [2023-11-06 21:15:20,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 286 places, 297 transitions, 612 flow [2023-11-06 21:15:20,876 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:15:20,905 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 286 places, 297 transitions, 612 flow [2023-11-06 21:15:20,912 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 286 places, 297 transitions, 612 flow [2023-11-06 21:15:20,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 297 transitions, 612 flow [2023-11-06 21:15:21,091 INFO L124 PetriNetUnfolderBase]: 21/297 cut-off events. [2023-11-06 21:15:21,091 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:15:21,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 297 events. 21/297 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 734 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2023-11-06 21:15:21,122 INFO L119 LiptonReduction]: Number of co-enabled transitions 25470 [2023-11-06 21:16:12,075 INFO L134 LiptonReduction]: Checked pairs total: 31270 [2023-11-06 21:16:12,076 INFO L136 LiptonReduction]: Total number of compositions: 368 [2023-11-06 21:16:12,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:16:12,105 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;@61c36b9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:16:12,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2023-11-06 21:16:12,108 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:16:12,108 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 21:16:12,109 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:16:12,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:12,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 21:16:12,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-06 21:16:12,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:12,117 INFO L85 PathProgramCache]: Analyzing trace with hash 52802, now seen corresponding path program 1 times [2023-11-06 21:16:12,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:12,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563676151] [2023-11-06 21:16:12,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:12,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:12,639 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 21:16:12,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:12,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563676151] [2023-11-06 21:16:12,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563676151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:12,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:12,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:16:12,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047556322] [2023-11-06 21:16:12,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:12,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:16:12,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:12,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:16:12,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:16:12,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 695 [2023-11-06 21:16:12,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 288.6666666666667) internal successors, (866), 3 states have internal predecessors, (866), 0 states have call successors, (0), 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 21:16:12,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:12,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 695 [2023-11-06 21:16:12,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:19,921 INFO L124 PetriNetUnfolderBase]: 13749/17523 cut-off events. [2023-11-06 21:16:19,923 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2023-11-06 21:16:19,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35417 conditions, 17523 events. 13749/17523 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 2018. Compared 92517 event pairs, 7845 based on Foata normal form. 0/4469 useless extension candidates. Maximal degree in co-relation 32884. Up to 17431 conditions per place. [2023-11-06 21:16:20,124 INFO L140 encePairwiseOnDemand]: 676/695 looper letters, 49 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-11-06 21:16:20,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 232 flow [2023-11-06 21:16:20,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:16:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:16:20,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 932 transitions. [2023-11-06 21:16:20,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44700239808153475 [2023-11-06 21:16:20,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 932 transitions. [2023-11-06 21:16:20,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 932 transitions. [2023-11-06 21:16:20,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:20,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 932 transitions. [2023-11-06 21:16:20,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 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 21:16:20,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 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 21:16:20,192 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 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 21:16:20,196 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 152 flow. Second operand 3 states and 932 transitions. [2023-11-06 21:16:20,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 232 flow [2023-11-06 21:16:20,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 55 transitions, 220 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 21:16:20,349 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 133 flow [2023-11-06 21:16:20,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-11-06 21:16:20,356 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -17 predicate places. [2023-11-06 21:16:20,357 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 133 flow [2023-11-06 21:16:20,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.6666666666667) internal successors, (866), 3 states have internal predecessors, (866), 0 states have call successors, (0), 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 21:16:20,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:20,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:16:20,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:16:20,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-06 21:16:20,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:20,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1640591, now seen corresponding path program 1 times [2023-11-06 21:16:20,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:20,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670904513] [2023-11-06 21:16:20,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:20,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:20,555 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 21:16:20,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:20,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670904513] [2023-11-06 21:16:20,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670904513] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:20,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984432073] [2023-11-06 21:16:20,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:20,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:20,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:20,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:20,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:16:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:20,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:16:20,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:21,037 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 21:16:21,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:21,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984432073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:21,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:21,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 21:16:21,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073927274] [2023-11-06 21:16:21,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:21,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:16:21,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:21,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:16:21,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:16:21,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 695 [2023-11-06 21:16:21,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 288.75) internal successors, (1155), 4 states have internal predecessors, (1155), 0 states have call successors, (0), 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 21:16:21,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:21,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 695 [2023-11-06 21:16:21,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:28,276 INFO L124 PetriNetUnfolderBase]: 13749/17522 cut-off events. [2023-11-06 21:16:28,277 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-06 21:16:28,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35121 conditions, 17522 events. 13749/17522 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 2058. Compared 93150 event pairs, 7845 based on Foata normal form. 0/4469 useless extension candidates. Maximal degree in co-relation 35097. Up to 17427 conditions per place. [2023-11-06 21:16:28,402 INFO L140 encePairwiseOnDemand]: 691/695 looper letters, 47 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-11-06 21:16:28,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 231 flow [2023-11-06 21:16:28,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:16:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:16:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1204 transitions. [2023-11-06 21:16:28,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330935251798561 [2023-11-06 21:16:28,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1204 transitions. [2023-11-06 21:16:28,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1204 transitions. [2023-11-06 21:16:28,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:28,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1204 transitions. [2023-11-06 21:16:28,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 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 21:16:28,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 695.0) internal successors, (3475), 5 states have internal predecessors, (3475), 0 states have call successors, (0), 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 21:16:28,444 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 695.0) internal successors, (3475), 5 states have internal predecessors, (3475), 0 states have call successors, (0), 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 21:16:28,444 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 133 flow. Second operand 4 states and 1204 transitions. [2023-11-06 21:16:28,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 231 flow [2023-11-06 21:16:28,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 226 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 21:16:28,449 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 132 flow [2023-11-06 21:16:28,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2023-11-06 21:16:28,452 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -16 predicate places. [2023-11-06 21:16:28,453 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 132 flow [2023-11-06 21:16:28,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 288.75) internal successors, (1155), 4 states have internal predecessors, (1155), 0 states have call successors, (0), 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 21:16:28,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:28,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:16:28,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 21:16:28,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:28,663 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-06 21:16:28,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1640616, now seen corresponding path program 1 times [2023-11-06 21:16:28,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:28,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613213785] [2023-11-06 21:16:28,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:28,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:28,812 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 21:16:28,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:28,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613213785] [2023-11-06 21:16:28,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613213785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:28,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478746279] [2023-11-06 21:16:28,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:28,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:28,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:28,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:28,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:16:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:29,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:16:29,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:29,186 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 21:16:29,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:29,210 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 21:16:29,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478746279] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:16:29,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:16:29,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 21:16:29,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476463732] [2023-11-06 21:16:29,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:29,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:16:29,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:29,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:16:29,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:16:29,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 695 [2023-11-06 21:16:29,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 132 flow. Second operand has 7 states, 7 states have (on average 289.14285714285717) internal successors, (2024), 7 states have internal predecessors, (2024), 0 states have call successors, (0), 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 21:16:29,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:29,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 695 [2023-11-06 21:16:29,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:35,148 INFO L124 PetriNetUnfolderBase]: 13752/17528 cut-off events. [2023-11-06 21:16:35,148 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-06 21:16:35,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35143 conditions, 17528 events. 13752/17528 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 2058. Compared 93325 event pairs, 7845 based on Foata normal form. 0/4477 useless extension candidates. Maximal degree in co-relation 35097. Up to 17433 conditions per place. [2023-11-06 21:16:35,294 INFO L140 encePairwiseOnDemand]: 691/695 looper letters, 48 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2023-11-06 21:16:35,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 60 transitions, 276 flow [2023-11-06 21:16:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:16:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:16:35,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1788 transitions. [2023-11-06 21:16:35,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4287769784172662 [2023-11-06 21:16:35,306 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1788 transitions. [2023-11-06 21:16:35,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1788 transitions. [2023-11-06 21:16:35,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:35,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1788 transitions. [2023-11-06 21:16:35,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 298.0) internal successors, (1788), 6 states have internal predecessors, (1788), 0 states have call successors, (0), 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 21:16:35,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 695.0) internal successors, (4865), 7 states have internal predecessors, (4865), 0 states have call successors, (0), 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 21:16:35,339 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 695.0) internal successors, (4865), 7 states have internal predecessors, (4865), 0 states have call successors, (0), 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 21:16:35,340 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 132 flow. Second operand 6 states and 1788 transitions. [2023-11-06 21:16:35,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 60 transitions, 276 flow [2023-11-06 21:16:35,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:16:35,344 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 190 flow [2023-11-06 21:16:35,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-11-06 21:16:35,346 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-11-06 21:16:35,346 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 190 flow [2023-11-06 21:16:35,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 289.14285714285717) internal successors, (2024), 7 states have internal predecessors, (2024), 0 states have call successors, (0), 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 21:16:35,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:35,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:16:35,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:35,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:35,568 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-06 21:16:35,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1576981085, now seen corresponding path program 1 times [2023-11-06 21:16:35,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:35,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763631848] [2023-11-06 21:16:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:35,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:35,727 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 21:16:35,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:35,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763631848] [2023-11-06 21:16:35,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763631848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:35,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:35,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:16:35,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652732552] [2023-11-06 21:16:35,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:35,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:16:35,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:35,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:16:35,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:16:35,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 695 [2023-11-06 21:16:35,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 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 21:16:35,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:35,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 695 [2023-11-06 21:16:35,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:44,012 INFO L124 PetriNetUnfolderBase]: 20533/26339 cut-off events. [2023-11-06 21:16:44,012 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-06 21:16:44,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52897 conditions, 26339 events. 20533/26339 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 2840. Compared 150429 event pairs, 4732 based on Foata normal form. 0/6886 useless extension candidates. Maximal degree in co-relation 52861. Up to 16726 conditions per place. [2023-11-06 21:16:44,229 INFO L140 encePairwiseOnDemand]: 689/695 looper letters, 95 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2023-11-06 21:16:44,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 102 transitions, 477 flow [2023-11-06 21:16:44,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:16:44,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:16:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 966 transitions. [2023-11-06 21:16:44,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4633093525179856 [2023-11-06 21:16:44,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 966 transitions. [2023-11-06 21:16:44,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 966 transitions. [2023-11-06 21:16:44,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:44,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 966 transitions. [2023-11-06 21:16:44,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 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 21:16:44,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 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 21:16:44,260 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 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 21:16:44,261 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 190 flow. Second operand 3 states and 966 transitions. [2023-11-06 21:16:44,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 102 transitions, 477 flow [2023-11-06 21:16:44,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 102 transitions, 456 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 21:16:44,269 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 197 flow [2023-11-06 21:16:44,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-11-06 21:16:44,273 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -8 predicate places. [2023-11-06 21:16:44,273 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 197 flow [2023-11-06 21:16:44,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 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 21:16:44,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:44,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:16:44,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:16:44,275 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-06 21:16:44,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:44,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1576981060, now seen corresponding path program 1 times [2023-11-06 21:16:44,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:44,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270359844] [2023-11-06 21:16:44,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:44,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:44,423 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 21:16:44,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:44,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270359844] [2023-11-06 21:16:44,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270359844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:44,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:44,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:16:44,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970077961] [2023-11-06 21:16:44,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:44,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:16:44,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:44,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:16:44,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:16:44,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 695 [2023-11-06 21:16:44,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 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 21:16:44,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:44,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 695 [2023-11-06 21:16:44,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:52,666 INFO L124 PetriNetUnfolderBase]: 19726/25532 cut-off events. [2023-11-06 21:16:52,666 INFO L125 PetriNetUnfolderBase]: For 951/951 co-relation queries the response was YES. [2023-11-06 21:16:52,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54318 conditions, 25532 events. 19726/25532 cut-off events. For 951/951 co-relation queries the response was YES. Maximal size of possible extension queue 2755. Compared 147368 event pairs, 12210 based on Foata normal form. 1/7639 useless extension candidates. Maximal degree in co-relation 54287. Up to 25414 conditions per place. [2023-11-06 21:16:52,844 INFO L140 encePairwiseOnDemand]: 692/695 looper letters, 57 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-06 21:16:52,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 310 flow [2023-11-06 21:16:52,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:16:52,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:16:52,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 909 transitions. [2023-11-06 21:16:52,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597122302158275 [2023-11-06 21:16:52,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 909 transitions. [2023-11-06 21:16:52,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 909 transitions. [2023-11-06 21:16:52,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:52,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 909 transitions. [2023-11-06 21:16:52,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 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 21:16:52,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 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 21:16:52,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 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 21:16:52,866 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 197 flow. Second operand 3 states and 909 transitions. [2023-11-06 21:16:52,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 310 flow [2023-11-06 21:16:52,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 62 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:16:52,873 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 192 flow [2023-11-06 21:16:52,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2023-11-06 21:16:52,875 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2023-11-06 21:16:52,875 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 192 flow [2023-11-06 21:16:52,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 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 21:16:52,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:52,876 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 21:16:52,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:16:52,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-06 21:16:52,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:52,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1633909147, now seen corresponding path program 2 times [2023-11-06 21:16:52,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:52,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349932031] [2023-11-06 21:16:52,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:52,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:52,995 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 21:16:52,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:52,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349932031] [2023-11-06 21:16:52,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349932031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:52,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958827357] [2023-11-06 21:16:52,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:16:52,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:52,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:52,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:53,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7585af6e-321d-4d4d-8db3-82d8deac7c5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:16:53,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 21:16:53,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:16:53,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:16:53,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:53,362 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 21:16:53,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:53,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958827357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:53,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:53,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 21:16:53,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188143790] [2023-11-06 21:16:53,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:53,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:16:53,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:53,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:16:53,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:16:53,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 695 [2023-11-06 21:16:53,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 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 21:16:53,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:53,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 695 [2023-11-06 21:16:53,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand