./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:00:53,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:53,629 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 12:00:53,638 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:53,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:53,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:53,679 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:53,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:53,681 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:53,686 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:53,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:53,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:53,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:53,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:53,691 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:53,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:53,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:00:53,692 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:00:53,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:53,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:00:53,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:53,695 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:00:53,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:53,695 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:00:53,696 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 12:00:53,696 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:00:53,697 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:00:53,697 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:00:53,697 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:53,698 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:53,700 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:53,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:53,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:53,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:53,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:53,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:53,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:00:53,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:00:53,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:00:53,702 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:53,702 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:53,702 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:00:53,703 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:53,703 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:53,703 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_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c [2023-11-26 12:00:54,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:54,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:54,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:54,125 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:54,127 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:54,128 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2023-11-26 12:00:57,186 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:57,409 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:57,410 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2023-11-26 12:00:57,420 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/data/d79f489ac/37cec9db84994f09bc97e9be81d6c158/FLAG3dd75a8bd [2023-11-26 12:00:57,436 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/data/d79f489ac/37cec9db84994f09bc97e9be81d6c158 [2023-11-26 12:00:57,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:57,440 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:57,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:57,442 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:57,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:57,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423aee46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57, skipping insertion in model container [2023-11-26 12:00:57,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,484 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:57,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:57,721 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:57,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:57,772 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:57,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57 WrapperNode [2023-11-26 12:00:57,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:57,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:57,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:57,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:57,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,793 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,835 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 342 [2023-11-26 12:00:57,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:57,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:57,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:57,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:57,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,856 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,879 INFO L175 MemorySlicer]: Split 17 memory accesses to 5 slices as follows [2, 2, 2, 9, 2]. 53 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 3, 1]. [2023-11-26 12:00:57,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,880 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,894 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,900 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,904 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:57,914 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:57,914 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:57,914 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:57,915 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:57,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:57,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:57,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:00:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:00:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:00:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:00:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:00:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:00:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:00:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:00:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:00:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 12:00:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 12:00:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 12:00:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 12:00:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 12:00:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 12:00:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 12:00:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 12:00:58,001 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 12:00:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:00:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:00:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:00:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:00:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:00:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:00:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:00:58,005 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:00:58,151 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:58,153 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:58,819 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:59,351 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:59,352 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-26 12:00:59,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:59 BoogieIcfgContainer [2023-11-26 12:00:59,353 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:59,356 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:59,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:59,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:59,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:57" (1/3) ... [2023-11-26 12:00:59,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@963b31e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:59, skipping insertion in model container [2023-11-26 12:00:59,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (2/3) ... [2023-11-26 12:00:59,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@963b31e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:59, skipping insertion in model container [2023-11-26 12:00:59,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:59" (3/3) ... [2023-11-26 12:00:59,365 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2023-11-26 12:00:59,375 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:00:59,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:59,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-26 12:00:59,388 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:00:59,524 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 12:00:59,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 109 transitions, 239 flow [2023-11-26 12:00:59,652 INFO L124 PetriNetUnfolderBase]: 12/106 cut-off events. [2023-11-26 12:00:59,653 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 12:00:59,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 12/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 393 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-11-26 12:00:59,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 109 transitions, 239 flow [2023-11-26 12:00:59,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 104 transitions, 223 flow [2023-11-26 12:00:59,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:59,704 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@434454c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:59,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2023-11-26 12:00:59,709 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:00:59,709 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 12:00:59,709 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:00:59,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:59,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:00:59,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-26 12:00:59,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:59,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1010812, now seen corresponding path program 1 times [2023-11-26 12:00:59,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:59,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637297627] [2023-11-26 12:00:59,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:59,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:00,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:00,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637297627] [2023-11-26 12:01:00,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637297627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:00,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:00,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:00,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056293770] [2023-11-26 12:01:00,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:00,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:00,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:00,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:00,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-26 12:01:00,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 104 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:00,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:00,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-26 12:01:00,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:01,771 INFO L124 PetriNetUnfolderBase]: 4342/8873 cut-off events. [2023-11-26 12:01:01,771 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2023-11-26 12:01:01,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14887 conditions, 8873 events. 4342/8873 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 77358 event pairs, 2884 based on Foata normal form. 3/6993 useless extension candidates. Maximal degree in co-relation 13590. Up to 5788 conditions per place. [2023-11-26 12:01:01,879 INFO L140 encePairwiseOnDemand]: 93/109 looper letters, 52 selfloop transitions, 10 changer transitions 0/113 dead transitions. [2023-11-26 12:01:01,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 113 transitions, 365 flow [2023-11-26 12:01:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:01:01,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:01:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2023-11-26 12:01:01,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6513761467889908 [2023-11-26 12:01:01,897 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 284 transitions. [2023-11-26 12:01:01,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 284 transitions. [2023-11-26 12:01:01,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:01,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 284 transitions. [2023-11-26 12:01:01,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:01,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:01,911 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:01,913 INFO L175 Difference]: Start difference. First operand has 102 places, 104 transitions, 223 flow. Second operand 4 states and 284 transitions. [2023-11-26 12:01:01,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 113 transitions, 365 flow [2023-11-26 12:01:01,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 113 transitions, 356 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:01:01,928 INFO L231 Difference]: Finished difference. Result has 103 places, 113 transitions, 302 flow [2023-11-26 12:01:01,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=103, PETRI_TRANSITIONS=113} [2023-11-26 12:01:01,935 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 1 predicate places. [2023-11-26 12:01:01,935 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 113 transitions, 302 flow [2023-11-26 12:01:01,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:01,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:01,936 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 12:01:01,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:01:01,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-26 12:01:01,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:01,937 INFO L85 PathProgramCache]: Analyzing trace with hash 49343876, now seen corresponding path program 1 times [2023-11-26 12:01:01,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:01,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295182276] [2023-11-26 12:01:01,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:01,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:02,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:02,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295182276] [2023-11-26 12:01:02,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295182276] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:02,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450569911] [2023-11-26 12:01:02,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:02,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:02,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:02,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:02,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:01:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:02,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:01:02,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:02,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:02,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450569911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:02,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:02,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 12:01:02,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684836056] [2023-11-26 12:01:02,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:02,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:02,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:02,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:02,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:01:02,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-26 12:01:02,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 113 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:02,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:02,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-26 12:01:02,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:03,905 INFO L124 PetriNetUnfolderBase]: 4342/8870 cut-off events. [2023-11-26 12:01:03,906 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-11-26 12:01:03,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14833 conditions, 8870 events. 4342/8870 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 77336 event pairs, 2884 based on Foata normal form. 3/6995 useless extension candidates. Maximal degree in co-relation 14760. Up to 5773 conditions per place. [2023-11-26 12:01:04,075 INFO L140 encePairwiseOnDemand]: 96/109 looper letters, 42 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2023-11-26 12:01:04,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 110 transitions, 408 flow [2023-11-26 12:01:04,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:01:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 386 transitions. [2023-11-26 12:01:04,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902140672782875 [2023-11-26 12:01:04,087 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 386 transitions. [2023-11-26 12:01:04,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 386 transitions. [2023-11-26 12:01:04,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:04,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 386 transitions. [2023-11-26 12:01:04,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:04,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:04,097 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:04,097 INFO L175 Difference]: Start difference. First operand has 103 places, 113 transitions, 302 flow. Second operand 6 states and 386 transitions. [2023-11-26 12:01:04,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 110 transitions, 408 flow [2023-11-26 12:01:04,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 110 transitions, 408 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:01:04,104 INFO L231 Difference]: Finished difference. Result has 105 places, 110 transitions, 324 flow [2023-11-26 12:01:04,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=105, PETRI_TRANSITIONS=110} [2023-11-26 12:01:04,105 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 3 predicate places. [2023-11-26 12:01:04,105 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 110 transitions, 324 flow [2023-11-26 12:01:04,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:04,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:04,106 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 12:01:04,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 12:01:04,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:04,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-26 12:01:04,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:04,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1529661176, now seen corresponding path program 1 times [2023-11-26 12:01:04,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:04,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303725996] [2023-11-26 12:01:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:04,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:04,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:04,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303725996] [2023-11-26 12:01:04,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303725996] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:04,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027174752] [2023-11-26 12:01:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:04,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:04,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:04,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:04,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:01:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:04,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:01:04,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:04,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:04,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:04,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:04,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027174752] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:04,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:04,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 12:01:04,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755716117] [2023-11-26 12:01:04,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:04,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 12:01:04,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:04,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 12:01:04,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:01:04,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-26 12:01:04,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 110 transitions, 324 flow. Second operand has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:04,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:04,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-26 12:01:04,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:06,059 INFO L124 PetriNetUnfolderBase]: 4351/8906 cut-off events. [2023-11-26 12:01:06,060 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-11-26 12:01:06,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14974 conditions, 8906 events. 4351/8906 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 77783 event pairs, 2884 based on Foata normal form. 9/7037 useless extension candidates. Maximal degree in co-relation 14762. Up to 5788 conditions per place. [2023-11-26 12:01:06,144 INFO L140 encePairwiseOnDemand]: 96/109 looper letters, 49 selfloop transitions, 37 changer transitions 0/137 dead transitions. [2023-11-26 12:01:06,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 137 transitions, 670 flow [2023-11-26 12:01:06,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:01:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:01:06,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 635 transitions. [2023-11-26 12:01:06,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5825688073394495 [2023-11-26 12:01:06,148 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 635 transitions. [2023-11-26 12:01:06,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 635 transitions. [2023-11-26 12:01:06,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:06,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 635 transitions. [2023-11-26 12:01:06,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.5) internal successors, (635), 10 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:06,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 109.0) internal successors, (1199), 11 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:06,159 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 109.0) internal successors, (1199), 11 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:06,160 INFO L175 Difference]: Start difference. First operand has 105 places, 110 transitions, 324 flow. Second operand 10 states and 635 transitions. [2023-11-26 12:01:06,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 137 transitions, 670 flow [2023-11-26 12:01:06,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 137 transitions, 587 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-26 12:01:06,167 INFO L231 Difference]: Finished difference. Result has 112 places, 137 transitions, 539 flow [2023-11-26 12:01:06,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=539, PETRI_PLACES=112, PETRI_TRANSITIONS=137} [2023-11-26 12:01:06,168 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2023-11-26 12:01:06,168 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 137 transitions, 539 flow [2023-11-26 12:01:06,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:06,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:06,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:06,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:06,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:06,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-26 12:01:06,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:06,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1072124498, now seen corresponding path program 1 times [2023-11-26 12:01:06,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:06,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114300996] [2023-11-26 12:01:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:06,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:06,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:06,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:06,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114300996] [2023-11-26 12:01:06,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114300996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:06,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:06,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:06,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931080972] [2023-11-26 12:01:06,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:06,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:06,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:06,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:06,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:06,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 109 [2023-11-26 12:01:06,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 137 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:06,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:06,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 109 [2023-11-26 12:01:06,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:07,872 INFO L124 PetriNetUnfolderBase]: 4348/8903 cut-off events. [2023-11-26 12:01:07,873 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2023-11-26 12:01:07,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14984 conditions, 8903 events. 4348/8903 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 77553 event pairs, 2884 based on Foata normal form. 3/7029 useless extension candidates. Maximal degree in co-relation 14886. Up to 5802 conditions per place. [2023-11-26 12:01:07,960 INFO L140 encePairwiseOnDemand]: 102/109 looper letters, 68 selfloop transitions, 12 changer transitions 0/134 dead transitions. [2023-11-26 12:01:07,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 134 transitions, 685 flow [2023-11-26 12:01:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-11-26 12:01:07,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7217125382262997 [2023-11-26 12:01:07,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-11-26 12:01:07,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-11-26 12:01:07,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:07,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-11-26 12:01:07,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:07,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:07,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:07,975 INFO L175 Difference]: Start difference. First operand has 112 places, 137 transitions, 539 flow. Second operand 3 states and 236 transitions. [2023-11-26 12:01:07,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 134 transitions, 685 flow [2023-11-26 12:01:07,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 134 transitions, 637 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-26 12:01:07,985 INFO L231 Difference]: Finished difference. Result has 111 places, 134 transitions, 501 flow [2023-11-26 12:01:07,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=501, PETRI_PLACES=111, PETRI_TRANSITIONS=134} [2023-11-26 12:01:07,988 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 9 predicate places. [2023-11-26 12:01:07,988 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 134 transitions, 501 flow [2023-11-26 12:01:07,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:07,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:07,989 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-26 12:01:07,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:01:07,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-26 12:01:07,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:07,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2024464128, now seen corresponding path program 2 times [2023-11-26 12:01:07,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:07,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415236547] [2023-11-26 12:01:07,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:07,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:08,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:08,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415236547] [2023-11-26 12:01:08,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415236547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:08,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180689447] [2023-11-26 12:01:08,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:01:08,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:08,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:08,186 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:08,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:01:08,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 12:01:08,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:08,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:01:08,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 12:01:08,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 12:01:08,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180689447] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:08,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:08,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2023-11-26 12:01:08,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623925452] [2023-11-26 12:01:08,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:08,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 12:01:08,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:08,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 12:01:08,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-26 12:01:08,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-26 12:01:08,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 134 transitions, 501 flow. Second operand has 15 states, 15 states have (on average 55.333333333333336) internal successors, (830), 15 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:08,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:08,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-26 12:01:08,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:09,951 INFO L124 PetriNetUnfolderBase]: 4351/8906 cut-off events. [2023-11-26 12:01:09,952 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2023-11-26 12:01:09,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14975 conditions, 8906 events. 4351/8906 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 77494 event pairs, 2884 based on Foata normal form. 3/7033 useless extension candidates. Maximal degree in co-relation 14873. Up to 5776 conditions per place. [2023-11-26 12:01:10,053 INFO L140 encePairwiseOnDemand]: 96/109 looper letters, 37 selfloop transitions, 49 changer transitions 0/137 dead transitions. [2023-11-26 12:01:10,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 137 transitions, 680 flow [2023-11-26 12:01:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 12:01:10,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-26 12:01:10,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 791 transitions. [2023-11-26 12:01:10,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5582215949188426 [2023-11-26 12:01:10,058 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 791 transitions. [2023-11-26 12:01:10,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 791 transitions. [2023-11-26 12:01:10,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:10,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 791 transitions. [2023-11-26 12:01:10,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.84615384615385) internal successors, (791), 13 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:10,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 109.0) internal successors, (1526), 14 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:10,066 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 109.0) internal successors, (1526), 14 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:10,067 INFO L175 Difference]: Start difference. First operand has 111 places, 134 transitions, 501 flow. Second operand 13 states and 791 transitions. [2023-11-26 12:01:10,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 137 transitions, 680 flow [2023-11-26 12:01:10,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 137 transitions, 622 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-26 12:01:10,073 INFO L231 Difference]: Finished difference. Result has 114 places, 137 transitions, 548 flow [2023-11-26 12:01:10,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=548, PETRI_PLACES=114, PETRI_TRANSITIONS=137} [2023-11-26 12:01:10,076 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 12 predicate places. [2023-11-26 12:01:10,077 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 137 transitions, 548 flow [2023-11-26 12:01:10,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 55.333333333333336) internal successors, (830), 15 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:10,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:10,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:10,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:10,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:10,284 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-26 12:01:10,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1243416907, now seen corresponding path program 1 times [2023-11-26 12:01:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:10,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234649034] [2023-11-26 12:01:10,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:10,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 12:01:10,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:10,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234649034] [2023-11-26 12:01:10,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234649034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:10,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:10,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:10,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916616883] [2023-11-26 12:01:10,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:10,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:10,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:10,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:10,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:10,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-26 12:01:10,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 137 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:10,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:10,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-26 12:01:10,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:12,154 INFO L124 PetriNetUnfolderBase]: 8282/15073 cut-off events. [2023-11-26 12:01:12,154 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-11-26 12:01:12,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26546 conditions, 15073 events. 8282/15073 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 128824 event pairs, 2625 based on Foata normal form. 364/12523 useless extension candidates. Maximal degree in co-relation 26301. Up to 5364 conditions per place. [2023-11-26 12:01:12,276 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 136 selfloop transitions, 5 changer transitions 0/186 dead transitions. [2023-11-26 12:01:12,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 186 transitions, 934 flow [2023-11-26 12:01:12,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:01:12,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:01:12,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-11-26 12:01:12,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7362385321100917 [2023-11-26 12:01:12,279 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-11-26 12:01:12,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-11-26 12:01:12,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:12,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-11-26 12:01:12,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,283 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,284 INFO L175 Difference]: Start difference. First operand has 114 places, 137 transitions, 548 flow. Second operand 4 states and 321 transitions. [2023-11-26 12:01:12,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 186 transitions, 934 flow [2023-11-26 12:01:12,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 186 transitions, 758 flow, removed 11 selfloop flow, removed 12 redundant places. [2023-11-26 12:01:12,290 INFO L231 Difference]: Finished difference. Result has 107 places, 139 transitions, 406 flow [2023-11-26 12:01:12,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=406, PETRI_PLACES=107, PETRI_TRANSITIONS=139} [2023-11-26 12:01:12,292 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 5 predicate places. [2023-11-26 12:01:12,292 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 139 transitions, 406 flow [2023-11-26 12:01:12,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:12,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:12,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:01:12,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-26 12:01:12,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:12,294 INFO L85 PathProgramCache]: Analyzing trace with hash 108782665, now seen corresponding path program 1 times [2023-11-26 12:01:12,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:12,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034337868] [2023-11-26 12:01:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:01:12,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:12,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034337868] [2023-11-26 12:01:12,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034337868] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:12,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422980278] [2023-11-26 12:01:12,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:12,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:12,461 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:12,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:01:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:12,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:01:12,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:01:12,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:01:12,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422980278] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:12,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:12,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2023-11-26 12:01:12,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745493728] [2023-11-26 12:01:12,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:12,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:01:12,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:12,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:01:12,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:12,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-26 12:01:12,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 139 transitions, 406 flow. Second operand has 11 states, 11 states have (on average 56.18181818181818) internal successors, (618), 11 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:12,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-26 12:01:12,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:14,500 INFO L124 PetriNetUnfolderBase]: 5390/11286 cut-off events. [2023-11-26 12:01:14,501 INFO L125 PetriNetUnfolderBase]: For 1873/2139 co-relation queries the response was YES. [2023-11-26 12:01:14,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20225 conditions, 11286 events. 5390/11286 cut-off events. For 1873/2139 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 103930 event pairs, 3656 based on Foata normal form. 135/9204 useless extension candidates. Maximal degree in co-relation 10275. Up to 7192 conditions per place. [2023-11-26 12:01:14,580 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 45 selfloop transitions, 37 changer transitions 0/133 dead transitions. [2023-11-26 12:01:14,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 133 transitions, 548 flow [2023-11-26 12:01:14,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:01:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:01:14,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 446 transitions. [2023-11-26 12:01:14,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5845347313237221 [2023-11-26 12:01:14,583 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 446 transitions. [2023-11-26 12:01:14,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 446 transitions. [2023-11-26 12:01:14,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:14,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 446 transitions. [2023-11-26 12:01:14,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:14,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 109.0) internal successors, (872), 8 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:14,588 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 109.0) internal successors, (872), 8 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:14,588 INFO L175 Difference]: Start difference. First operand has 107 places, 139 transitions, 406 flow. Second operand 7 states and 446 transitions. [2023-11-26 12:01:14,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 133 transitions, 548 flow [2023-11-26 12:01:14,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 133 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:01:14,614 INFO L231 Difference]: Finished difference. Result has 113 places, 133 transitions, 458 flow [2023-11-26 12:01:14,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=458, PETRI_PLACES=113, PETRI_TRANSITIONS=133} [2023-11-26 12:01:14,615 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2023-11-26 12:01:14,616 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 133 transitions, 458 flow [2023-11-26 12:01:14,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 56.18181818181818) internal successors, (618), 11 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:14,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:14,617 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:14,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 12:01:14,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:14,823 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-26 12:01:14,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:14,824 INFO L85 PathProgramCache]: Analyzing trace with hash -41432151, now seen corresponding path program 2 times [2023-11-26 12:01:14,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:14,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659213156] [2023-11-26 12:01:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:14,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 12:01:15,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:15,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659213156] [2023-11-26 12:01:15,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659213156] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:15,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813550011] [2023-11-26 12:01:15,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:01:15,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:15,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:15,122 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:15,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:01:15,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:01:15,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:15,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:01:15,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 12:01:15,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 12:01:15,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813550011] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:15,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:15,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-26 12:01:15,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113377594] [2023-11-26 12:01:15,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:15,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 12:01:15,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:15,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 12:01:15,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2023-11-26 12:01:15,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-26 12:01:15,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 133 transitions, 458 flow. Second operand has 18 states, 18 states have (on average 55.611111111111114) internal successors, (1001), 18 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:15,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:15,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-26 12:01:15,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:17,190 INFO L124 PetriNetUnfolderBase]: 5384/11280 cut-off events. [2023-11-26 12:01:17,191 INFO L125 PetriNetUnfolderBase]: For 1903/2169 co-relation queries the response was YES. [2023-11-26 12:01:17,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20243 conditions, 11280 events. 5384/11280 cut-off events. For 1903/2169 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 103843 event pairs, 3656 based on Foata normal form. 137/9207 useless extension candidates. Maximal degree in co-relation 20081. Up to 7184 conditions per place. [2023-11-26 12:01:17,253 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 43 selfloop transitions, 33 changer transitions 0/127 dead transitions. [2023-11-26 12:01:17,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 127 transitions, 580 flow [2023-11-26 12:01:17,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:01:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:01:17,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 674 transitions. [2023-11-26 12:01:17,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5621351125938282 [2023-11-26 12:01:17,257 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 674 transitions. [2023-11-26 12:01:17,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 674 transitions. [2023-11-26 12:01:17,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:17,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 674 transitions. [2023-11-26 12:01:17,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.27272727272727) internal successors, (674), 11 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:17,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 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) [2023-11-26 12:01:17,263 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 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) [2023-11-26 12:01:17,264 INFO L175 Difference]: Start difference. First operand has 113 places, 133 transitions, 458 flow. Second operand 11 states and 674 transitions. [2023-11-26 12:01:17,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 127 transitions, 580 flow [2023-11-26 12:01:17,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 127 transitions, 514 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 12:01:17,278 INFO L231 Difference]: Finished difference. Result has 117 places, 127 transitions, 428 flow [2023-11-26 12:01:17,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=428, PETRI_PLACES=117, PETRI_TRANSITIONS=127} [2023-11-26 12:01:17,279 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 15 predicate places. [2023-11-26 12:01:17,279 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 127 transitions, 428 flow [2023-11-26 12:01:17,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 55.611111111111114) internal successors, (1001), 18 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:17,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:17,280 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:17,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:17,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:17,486 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-26 12:01:17,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:17,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1394277129, now seen corresponding path program 3 times [2023-11-26 12:01:17,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:17,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395082407] [2023-11-26 12:01:17,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:17,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-26 12:01:19,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:19,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395082407] [2023-11-26 12:01:19,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395082407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:19,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270036761] [2023-11-26 12:01:19,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 12:01:19,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:19,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:19,506 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:19,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2055042f-3ff8-41f3-8804-7f8c0f247109/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:01:19,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-26 12:01:19,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:19,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-26 12:01:19,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:19,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-26 12:01:19,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 12:01:20,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:01:20,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-26 12:01:20,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:01:20,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-26 12:01:20,239 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2023-11-26 12:01:20,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2023-11-26 12:01:20,408 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2023-11-26 12:01:20,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2023-11-26 12:01:20,560 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-26 12:01:20,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-26 12:01:20,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 12:01:20,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 12:01:20,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 12:01:20,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 12:01:20,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 12:01:20,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-26 12:01:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-26 12:01:20,760 INFO L327 TraceCheckSpWp]: Computing backward predicates...