./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-symm.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_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya --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 bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:31:07,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:31:07,887 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:31:07,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:31:07,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:31:07,918 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:31:07,919 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:31:07,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:31:07,921 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:31:07,921 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:31:07,922 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:31:07,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:31:07,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:31:07,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:31:07,924 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:31:07,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:31:07,925 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:31:07,926 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:31:07,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:31:07,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:31:07,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:31:07,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:31:07,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:31:07,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:31:07,930 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:31:07,930 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:31:07,931 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:31:07,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:31:07,932 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:31:07,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:31:07,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:31:07,933 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:31:07,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:31:07,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:31:07,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:31:07,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:31:07,935 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:31:07,935 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:31:07,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:31:07,936 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:31:07,936 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:31:07,936 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:31:07,937 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:31:07,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:31:07,937 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_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e [2023-11-29 01:31:08,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:31:08,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:31:08,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:31:08,193 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:31:08,193 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:31:08,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2023-11-29 01:31:10,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:31:11,165 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:31:11,165 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2023-11-29 01:31:11,172 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/data/c824c73f3/e2f997b56f9944caa4e16e9c1e85716b/FLAG6a0e58831 [2023-11-29 01:31:11,186 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/data/c824c73f3/e2f997b56f9944caa4e16e9c1e85716b [2023-11-29 01:31:11,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:31:11,191 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:31:11,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:31:11,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:31:11,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:31:11,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:31:11" (1/1) ... [2023-11-29 01:31:11,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a14777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11, skipping insertion in model container [2023-11-29 01:31:11,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:31:11" (1/1) ... [2023-11-29 01:31:11,225 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:31:11,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:31:11,418 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:31:11,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:31:11,460 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:31:11,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11 WrapperNode [2023-11-29 01:31:11,461 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:31:11,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:31:11,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:31:11,462 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:31:11,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11" (1/1) ... [2023-11-29 01:31:11,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11" (1/1) ... [2023-11-29 01:31:11,504 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 141 [2023-11-29 01:31:11,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:31:11,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:31:11,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:31:11,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:31:11,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11" (1/1) ... [2023-11-29 01:31:11,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11" (1/1) ... [2023-11-29 01:31:11,523 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11" (1/1) ... [2023-11-29 01:31:11,541 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 2, 2, 10]. 63 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 2]. [2023-11-29 01:31:11,542 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11" (1/1) ... [2023-11-29 01:31:11,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11" (1/1) ... [2023-11-29 01:31:11,551 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11" (1/1) ... [2023-11-29 01:31:11,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11" (1/1) ... [2023-11-29 01:31:11,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11" (1/1) ... [2023-11-29 01:31:11,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11" (1/1) ... [2023-11-29 01:31:11,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:31:11,565 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:31:11,565 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:31:11,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:31:11,566 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11" (1/1) ... [2023-11-29 01:31:11,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:31:11,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:11,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:31:11,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:31:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:31:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 01:31:11,636 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 01:31:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 01:31:11,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 01:31:11,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:31:11,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:31:11,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:31:11,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:31:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:31:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:31:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:31:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:31:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:31:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:31:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:31:11,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:31:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:31:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:31:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:31:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:31:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:31:11,642 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:31:11,762 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:31:11,764 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:31:12,100 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:31:12,397 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:31:12,397 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 01:31:12,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:31:12 BoogieIcfgContainer [2023-11-29 01:31:12,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:31:12,401 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:31:12,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:31:12,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:31:12,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:31:11" (1/3) ... [2023-11-29 01:31:12,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d07b409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:31:12, skipping insertion in model container [2023-11-29 01:31:12,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:11" (2/3) ... [2023-11-29 01:31:12,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d07b409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:31:12, skipping insertion in model container [2023-11-29 01:31:12,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:31:12" (3/3) ... [2023-11-29 01:31:12,407 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2023-11-29 01:31:12,417 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:31:12,428 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:31:12,428 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-29 01:31:12,428 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:31:12,484 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 01:31:12,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 61 transitions, 136 flow [2023-11-29 01:31:12,559 INFO L124 PetriNetUnfolderBase]: 10/59 cut-off events. [2023-11-29 01:31:12,559 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 01:31:12,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 59 events. 10/59 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 159 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2023-11-29 01:31:12,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 61 transitions, 136 flow [2023-11-29 01:31:12,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 57 transitions, 123 flow [2023-11-29 01:31:12,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:31:12,585 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;@77cc8f50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:31:12,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-29 01:31:12,590 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:31:12,590 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 01:31:12,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:31:12,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:12,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 01:31:12,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:12,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:12,598 INFO L85 PathProgramCache]: Analyzing trace with hash 602438, now seen corresponding path program 1 times [2023-11-29 01:31:12,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:12,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916699976] [2023-11-29 01:31:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:12,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:12,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:12,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916699976] [2023-11-29 01:31:12,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916699976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:12,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:12,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:31:12,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520314149] [2023-11-29 01:31:12,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:12,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:12,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:12,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:12,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:31:12,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 01:31:12,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 57 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:12,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:12,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 01:31:12,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:13,164 INFO L124 PetriNetUnfolderBase]: 323/688 cut-off events. [2023-11-29 01:31:13,164 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-29 01:31:13,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 688 events. 323/688 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3663 event pairs, 189 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 1066. Up to 470 conditions per place. [2023-11-29 01:31:13,175 INFO L140 encePairwiseOnDemand]: 50/61 looper letters, 36 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2023-11-29 01:31:13,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 221 flow [2023-11-29 01:31:13,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:31:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2023-11-29 01:31:13,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532786885245902 [2023-11-29 01:31:13,188 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 135 transitions. [2023-11-29 01:31:13,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 135 transitions. [2023-11-29 01:31:13,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:13,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 135 transitions. [2023-11-29 01:31:13,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:13,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:13,198 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:13,200 INFO L175 Difference]: Start difference. First operand has 54 places, 57 transitions, 123 flow. Second operand 4 states and 135 transitions. [2023-11-29 01:31:13,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 221 flow [2023-11-29 01:31:13,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:31:13,207 INFO L231 Difference]: Finished difference. Result has 57 places, 63 transitions, 178 flow [2023-11-29 01:31:13,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=57, PETRI_TRANSITIONS=63} [2023-11-29 01:31:13,212 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-11-29 01:31:13,212 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 63 transitions, 178 flow [2023-11-29 01:31:13,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:13,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:13,212 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 01:31:13,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:31:13,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:13,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:13,214 INFO L85 PathProgramCache]: Analyzing trace with hash 767958907, now seen corresponding path program 1 times [2023-11-29 01:31:13,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:13,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188286058] [2023-11-29 01:31:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:13,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:13,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:13,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188286058] [2023-11-29 01:31:13,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188286058] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:13,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835248703] [2023-11-29 01:31:13,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:13,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:13,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:13,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:13,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:31:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:13,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:31:13,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:13,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:13,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835248703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:13,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:31:13,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 01:31:13,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795894222] [2023-11-29 01:31:13,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:13,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:31:13,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:13,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:31:13,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:31:13,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 01:31:13,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 63 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:13,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:13,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 01:31:13,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:13,802 INFO L124 PetriNetUnfolderBase]: 323/686 cut-off events. [2023-11-29 01:31:13,802 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-29 01:31:13,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 686 events. 323/686 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3660 event pairs, 189 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 1152. Up to 460 conditions per place. [2023-11-29 01:31:13,809 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 29 selfloop transitions, 12 changer transitions 0/61 dead transitions. [2023-11-29 01:31:13,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 252 flow [2023-11-29 01:31:13,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:31:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:31:13,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2023-11-29 01:31:13,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781420765027322 [2023-11-29 01:31:13,813 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 175 transitions. [2023-11-29 01:31:13,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 175 transitions. [2023-11-29 01:31:13,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:13,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 175 transitions. [2023-11-29 01:31:13,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:13,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:13,818 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:13,818 INFO L175 Difference]: Start difference. First operand has 57 places, 63 transitions, 178 flow. Second operand 6 states and 175 transitions. [2023-11-29 01:31:13,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 252 flow [2023-11-29 01:31:13,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 61 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:31:13,821 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 194 flow [2023-11-29 01:31:13,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-11-29 01:31:13,822 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2023-11-29 01:31:13,822 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 194 flow [2023-11-29 01:31:13,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:13,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:13,823 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 01:31:13,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:31:14,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:14,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:14,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1963077058, now seen corresponding path program 1 times [2023-11-29 01:31:14,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:14,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476104991] [2023-11-29 01:31:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:14,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:14,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:14,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476104991] [2023-11-29 01:31:14,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476104991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:14,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946466778] [2023-11-29 01:31:14,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:14,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:14,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:14,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:14,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:31:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:14,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:31:14,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:14,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:14,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946466778] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:14,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:14,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 01:31:14,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981598607] [2023-11-29 01:31:14,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:14,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:31:14,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:14,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:31:14,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:31:14,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 01:31:14,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 194 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:14,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:14,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 01:31:14,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:14,570 INFO L124 PetriNetUnfolderBase]: 329/710 cut-off events. [2023-11-29 01:31:14,570 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-29 01:31:14,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1296 conditions, 710 events. 329/710 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3872 event pairs, 189 based on Foata normal form. 6/513 useless extension candidates. Maximal degree in co-relation 1154. Up to 471 conditions per place. [2023-11-29 01:31:14,576 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 34 selfloop transitions, 25 changer transitions 0/79 dead transitions. [2023-11-29 01:31:14,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 426 flow [2023-11-29 01:31:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:31:14,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:31:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 285 transitions. [2023-11-29 01:31:14,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672131147540984 [2023-11-29 01:31:14,580 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 285 transitions. [2023-11-29 01:31:14,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 285 transitions. [2023-11-29 01:31:14,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:14,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 285 transitions. [2023-11-29 01:31:14,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 28.5) internal successors, (285), 10 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:14,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:14,586 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:14,586 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 194 flow. Second operand 10 states and 285 transitions. [2023-11-29 01:31:14,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 426 flow [2023-11-29 01:31:14,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 368 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-29 01:31:14,604 INFO L231 Difference]: Finished difference. Result has 67 places, 79 transitions, 334 flow [2023-11-29 01:31:14,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=334, PETRI_PLACES=67, PETRI_TRANSITIONS=79} [2023-11-29 01:31:14,605 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2023-11-29 01:31:14,605 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 79 transitions, 334 flow [2023-11-29 01:31:14,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:14,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:14,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:14,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:31:14,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:14,807 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:14,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:14,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1329999336, now seen corresponding path program 1 times [2023-11-29 01:31:14,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:14,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590972114] [2023-11-29 01:31:14,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:14,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:14,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:14,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590972114] [2023-11-29 01:31:14,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590972114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:14,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:14,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:14,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312943091] [2023-11-29 01:31:14,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:14,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:14,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:14,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:14,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:31:14,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2023-11-29 01:31:14,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 79 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:14,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:14,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2023-11-29 01:31:14,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:15,128 INFO L124 PetriNetUnfolderBase]: 568/1031 cut-off events. [2023-11-29 01:31:15,129 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-29 01:31:15,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2014 conditions, 1031 events. 568/1031 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5025 event pairs, 261 based on Foata normal form. 18/783 useless extension candidates. Maximal degree in co-relation 1947. Up to 651 conditions per place. [2023-11-29 01:31:15,138 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 88 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2023-11-29 01:31:15,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 111 transitions, 586 flow [2023-11-29 01:31:15,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:15,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:31:15,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2023-11-29 01:31:15,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6639344262295082 [2023-11-29 01:31:15,140 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 162 transitions. [2023-11-29 01:31:15,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 162 transitions. [2023-11-29 01:31:15,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:15,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 162 transitions. [2023-11-29 01:31:15,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:15,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:15,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:15,148 INFO L175 Difference]: Start difference. First operand has 67 places, 79 transitions, 334 flow. Second operand 4 states and 162 transitions. [2023-11-29 01:31:15,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 111 transitions, 586 flow [2023-11-29 01:31:15,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 111 transitions, 562 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-29 01:31:15,163 INFO L231 Difference]: Finished difference. Result has 70 places, 82 transitions, 339 flow [2023-11-29 01:31:15,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=339, PETRI_PLACES=70, PETRI_TRANSITIONS=82} [2023-11-29 01:31:15,165 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-11-29 01:31:15,166 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 82 transitions, 339 flow [2023-11-29 01:31:15,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:15,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:15,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:15,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:31:15,166 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:15,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:15,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1719661147, now seen corresponding path program 1 times [2023-11-29 01:31:15,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:15,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258132177] [2023-11-29 01:31:15,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:15,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:15,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:15,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258132177] [2023-11-29 01:31:15,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258132177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:15,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:15,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:15,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138957662] [2023-11-29 01:31:15,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:15,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:31:15,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:15,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:31:15,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:15,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 01:31:15,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 82 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:15,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:15,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 01:31:15,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:15,710 INFO L124 PetriNetUnfolderBase]: 1229/2311 cut-off events. [2023-11-29 01:31:15,710 INFO L125 PetriNetUnfolderBase]: For 371/371 co-relation queries the response was YES. [2023-11-29 01:31:15,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4582 conditions, 2311 events. 1229/2311 cut-off events. For 371/371 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 13681 event pairs, 696 based on Foata normal form. 16/1796 useless extension candidates. Maximal degree in co-relation 4515. Up to 883 conditions per place. [2023-11-29 01:31:15,729 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 83 selfloop transitions, 10 changer transitions 0/112 dead transitions. [2023-11-29 01:31:15,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 112 transitions, 603 flow [2023-11-29 01:31:15,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:31:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:31:15,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2023-11-29 01:31:15,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5901639344262295 [2023-11-29 01:31:15,731 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 180 transitions. [2023-11-29 01:31:15,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 180 transitions. [2023-11-29 01:31:15,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:15,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 180 transitions. [2023-11-29 01:31:15,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:15,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:15,734 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:15,734 INFO L175 Difference]: Start difference. First operand has 70 places, 82 transitions, 339 flow. Second operand 5 states and 180 transitions. [2023-11-29 01:31:15,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 112 transitions, 603 flow [2023-11-29 01:31:15,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 598 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:31:15,739 INFO L231 Difference]: Finished difference. Result has 75 places, 84 transitions, 380 flow [2023-11-29 01:31:15,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=75, PETRI_TRANSITIONS=84} [2023-11-29 01:31:15,740 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2023-11-29 01:31:15,740 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 84 transitions, 380 flow [2023-11-29 01:31:15,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:15,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:15,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:15,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:31:15,741 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:15,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:15,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1584814797, now seen corresponding path program 1 times [2023-11-29 01:31:15,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:15,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519504855] [2023-11-29 01:31:15,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:15,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:15,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:15,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519504855] [2023-11-29 01:31:15,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519504855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:15,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:15,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:15,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152544293] [2023-11-29 01:31:15,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:15,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:15,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:15,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:15,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:31:15,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2023-11-29 01:31:15,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 84 transitions, 380 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:15,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:15,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2023-11-29 01:31:15,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:16,226 INFO L124 PetriNetUnfolderBase]: 1741/3003 cut-off events. [2023-11-29 01:31:16,227 INFO L125 PetriNetUnfolderBase]: For 513/553 co-relation queries the response was YES. [2023-11-29 01:31:16,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6247 conditions, 3003 events. 1741/3003 cut-off events. For 513/553 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16453 event pairs, 790 based on Foata normal form. 52/2504 useless extension candidates. Maximal degree in co-relation 6176. Up to 1874 conditions per place. [2023-11-29 01:31:16,251 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 94 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2023-11-29 01:31:16,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 120 transitions, 674 flow [2023-11-29 01:31:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:31:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2023-11-29 01:31:16,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6639344262295082 [2023-11-29 01:31:16,253 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 162 transitions. [2023-11-29 01:31:16,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 162 transitions. [2023-11-29 01:31:16,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:16,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 162 transitions. [2023-11-29 01:31:16,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:16,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:16,255 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:16,255 INFO L175 Difference]: Start difference. First operand has 75 places, 84 transitions, 380 flow. Second operand 4 states and 162 transitions. [2023-11-29 01:31:16,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 120 transitions, 674 flow [2023-11-29 01:31:16,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 120 transitions, 673 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:31:16,261 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 408 flow [2023-11-29 01:31:16,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=408, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2023-11-29 01:31:16,262 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2023-11-29 01:31:16,262 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 408 flow [2023-11-29 01:31:16,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:16,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:16,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:16,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:31:16,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:16,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:16,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1769887350, now seen corresponding path program 1 times [2023-11-29 01:31:16,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:16,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732466169] [2023-11-29 01:31:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:16,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:16,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:16,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732466169] [2023-11-29 01:31:16,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732466169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:16,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:16,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:31:16,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47600152] [2023-11-29 01:31:16,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:16,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:16,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:16,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:16,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:31:16,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 01:31:16,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:16,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:16,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 01:31:16,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:17,090 INFO L124 PetriNetUnfolderBase]: 3262/5918 cut-off events. [2023-11-29 01:31:17,090 INFO L125 PetriNetUnfolderBase]: For 2156/2164 co-relation queries the response was YES. [2023-11-29 01:31:17,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13188 conditions, 5918 events. 3262/5918 cut-off events. For 2156/2164 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 39535 event pairs, 1866 based on Foata normal form. 104/5272 useless extension candidates. Maximal degree in co-relation 13087. Up to 2256 conditions per place. [2023-11-29 01:31:17,184 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 109 selfloop transitions, 5 changer transitions 0/134 dead transitions. [2023-11-29 01:31:17,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 134 transitions, 833 flow [2023-11-29 01:31:17,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:17,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:31:17,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2023-11-29 01:31:17,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6598360655737705 [2023-11-29 01:31:17,185 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 161 transitions. [2023-11-29 01:31:17,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 161 transitions. [2023-11-29 01:31:17,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:17,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 161 transitions. [2023-11-29 01:31:17,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:17,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:17,187 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:17,187 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 408 flow. Second operand 4 states and 161 transitions. [2023-11-29 01:31:17,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 134 transitions, 833 flow [2023-11-29 01:31:17,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 134 transitions, 828 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:31:17,199 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 442 flow [2023-11-29 01:31:17,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=442, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2023-11-29 01:31:17,200 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2023-11-29 01:31:17,200 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 442 flow [2023-11-29 01:31:17,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:17,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:17,200 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:17,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:31:17,201 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:17,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:17,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1000432094, now seen corresponding path program 1 times [2023-11-29 01:31:17,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:17,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732445353] [2023-11-29 01:31:17,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:17,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:17,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:31:17,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:17,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732445353] [2023-11-29 01:31:17,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732445353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:17,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:17,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:31:17,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6949181] [2023-11-29 01:31:17,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:17,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:31:17,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:17,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:31:17,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:17,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2023-11-29 01:31:17,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 442 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:17,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:17,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2023-11-29 01:31:17,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:17,940 INFO L124 PetriNetUnfolderBase]: 2306/4309 cut-off events. [2023-11-29 01:31:17,940 INFO L125 PetriNetUnfolderBase]: For 1208/1230 co-relation queries the response was YES. [2023-11-29 01:31:17,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9568 conditions, 4309 events. 2306/4309 cut-off events. For 1208/1230 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 27822 event pairs, 1288 based on Foata normal form. 0/3877 useless extension candidates. Maximal degree in co-relation 9466. Up to 2167 conditions per place. [2023-11-29 01:31:17,972 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 113 selfloop transitions, 5 changer transitions 0/144 dead transitions. [2023-11-29 01:31:17,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 144 transitions, 891 flow [2023-11-29 01:31:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:31:17,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:31:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 202 transitions. [2023-11-29 01:31:17,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6622950819672131 [2023-11-29 01:31:17,974 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 202 transitions. [2023-11-29 01:31:17,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 202 transitions. [2023-11-29 01:31:17,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:17,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 202 transitions. [2023-11-29 01:31:17,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:17,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:17,977 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:17,977 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 442 flow. Second operand 5 states and 202 transitions. [2023-11-29 01:31:17,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 144 transitions, 891 flow [2023-11-29 01:31:17,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 144 transitions, 879 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 01:31:17,986 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 461 flow [2023-11-29 01:31:17,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=461, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2023-11-29 01:31:17,988 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 34 predicate places. [2023-11-29 01:31:17,988 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 461 flow [2023-11-29 01:31:17,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:17,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:17,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:17,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:31:17,988 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:17,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:17,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1085721822, now seen corresponding path program 1 times [2023-11-29 01:31:17,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:17,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953451379] [2023-11-29 01:31:17,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:17,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:18,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:18,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953451379] [2023-11-29 01:31:18,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953451379] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:18,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924027433] [2023-11-29 01:31:18,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:18,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:18,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:18,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:18,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:31:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:18,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:31:18,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:31:18,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:18,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924027433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:18,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:31:18,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-29 01:31:18,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172034473] [2023-11-29 01:31:18,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:18,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:31:18,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:18,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:31:18,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:31:18,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 61 [2023-11-29 01:31:18,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 461 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:18,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:18,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 61 [2023-11-29 01:31:18,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:18,626 INFO L124 PetriNetUnfolderBase]: 2160/4104 cut-off events. [2023-11-29 01:31:18,627 INFO L125 PetriNetUnfolderBase]: For 2008/2016 co-relation queries the response was YES. [2023-11-29 01:31:18,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9115 conditions, 4104 events. 2160/4104 cut-off events. For 2008/2016 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 26166 event pairs, 1286 based on Foata normal form. 88/3838 useless extension candidates. Maximal degree in co-relation 9011. Up to 2998 conditions per place. [2023-11-29 01:31:18,649 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 61 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-11-29 01:31:18,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 557 flow [2023-11-29 01:31:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:31:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:31:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2023-11-29 01:31:18,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5846994535519126 [2023-11-29 01:31:18,650 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2023-11-29 01:31:18,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2023-11-29 01:31:18,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:18,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2023-11-29 01:31:18,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:18,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:18,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:18,652 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 461 flow. Second operand 3 states and 107 transitions. [2023-11-29 01:31:18,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 557 flow [2023-11-29 01:31:18,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 545 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 01:31:18,662 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 423 flow [2023-11-29 01:31:18,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=423, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2023-11-29 01:31:18,664 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2023-11-29 01:31:18,665 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 423 flow [2023-11-29 01:31:18,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:18,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:18,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:18,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:31:18,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:18,868 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:18,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:18,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1717857601, now seen corresponding path program 1 times [2023-11-29 01:31:18,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:18,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917660823] [2023-11-29 01:31:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:18,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:18,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:18,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917660823] [2023-11-29 01:31:18,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917660823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:18,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068751320] [2023-11-29 01:31:18,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:18,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:18,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:18,969 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:18,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:31:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:19,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:31:19,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:31:19,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:19,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068751320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:19,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:31:19,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-29 01:31:19,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358285169] [2023-11-29 01:31:19,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:19,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:19,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:19,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:19,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:31:19,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 61 [2023-11-29 01:31:19,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 423 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:19,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:19,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 61 [2023-11-29 01:31:19,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:19,549 INFO L124 PetriNetUnfolderBase]: 2112/4016 cut-off events. [2023-11-29 01:31:19,549 INFO L125 PetriNetUnfolderBase]: For 1724/1724 co-relation queries the response was YES. [2023-11-29 01:31:19,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8808 conditions, 4016 events. 2112/4016 cut-off events. For 1724/1724 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 25440 event pairs, 1284 based on Foata normal form. 126/3792 useless extension candidates. Maximal degree in co-relation 8786. Up to 2987 conditions per place. [2023-11-29 01:31:19,568 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 56 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2023-11-29 01:31:19,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 521 flow [2023-11-29 01:31:19,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:19,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:31:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2023-11-29 01:31:19,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368852459016393 [2023-11-29 01:31:19,569 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 131 transitions. [2023-11-29 01:31:19,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 131 transitions. [2023-11-29 01:31:19,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:19,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 131 transitions. [2023-11-29 01:31:19,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:19,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:19,571 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:19,571 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 423 flow. Second operand 4 states and 131 transitions. [2023-11-29 01:31:19,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 521 flow [2023-11-29 01:31:19,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 505 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 01:31:19,576 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 393 flow [2023-11-29 01:31:19,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=393, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2023-11-29 01:31:19,577 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2023-11-29 01:31:19,577 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 393 flow [2023-11-29 01:31:19,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:19,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:19,578 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:19,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 01:31:19,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:19,778 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:19,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:19,779 INFO L85 PathProgramCache]: Analyzing trace with hash -835165972, now seen corresponding path program 1 times [2023-11-29 01:31:19,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:19,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813946638] [2023-11-29 01:31:19,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:19,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:19,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:31:19,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:19,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813946638] [2023-11-29 01:31:19,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813946638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:19,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:19,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:31:19,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603461352] [2023-11-29 01:31:19,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:19,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:31:19,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:19,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:31:19,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:19,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2023-11-29 01:31:19,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 393 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:19,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:19,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2023-11-29 01:31:19,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:20,242 INFO L124 PetriNetUnfolderBase]: 1888/3492 cut-off events. [2023-11-29 01:31:20,242 INFO L125 PetriNetUnfolderBase]: For 1115/1119 co-relation queries the response was YES. [2023-11-29 01:31:20,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7812 conditions, 3492 events. 1888/3492 cut-off events. For 1115/1119 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 20840 event pairs, 1104 based on Foata normal form. 0/3206 useless extension candidates. Maximal degree in co-relation 7792. Up to 2211 conditions per place. [2023-11-29 01:31:20,258 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 70 selfloop transitions, 3 changer transitions 34/125 dead transitions. [2023-11-29 01:31:20,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 125 transitions, 768 flow [2023-11-29 01:31:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:31:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:31:20,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2023-11-29 01:31:20,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6360655737704918 [2023-11-29 01:31:20,260 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2023-11-29 01:31:20,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2023-11-29 01:31:20,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:20,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2023-11-29 01:31:20,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:20,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:20,263 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:20,263 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 393 flow. Second operand 5 states and 194 transitions. [2023-11-29 01:31:20,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 125 transitions, 768 flow [2023-11-29 01:31:20,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 761 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:31:20,272 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 383 flow [2023-11-29 01:31:20,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2023-11-29 01:31:20,273 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2023-11-29 01:31:20,273 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 383 flow [2023-11-29 01:31:20,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:20,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:20,273 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 01:31:20,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:31:20,274 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:20,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:20,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1004317203, now seen corresponding path program 2 times [2023-11-29 01:31:20,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:20,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391550593] [2023-11-29 01:31:20,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:20,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:20,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:20,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:20,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391550593] [2023-11-29 01:31:20,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391550593] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:20,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444606989] [2023-11-29 01:31:20,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:31:20,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:20,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:20,426 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:20,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:31:20,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:31:20,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:31:20,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:31:20,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:20,581 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 01:31:20,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:20,616 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 01:31:20,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444606989] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:20,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:20,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 01:31:20,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424280366] [2023-11-29 01:31:20,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:20,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:31:20,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:20,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:31:20,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:31:20,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 01:31:20,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 383 flow. Second operand has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:20,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:20,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 01:31:20,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:21,187 INFO L124 PetriNetUnfolderBase]: 1551/2967 cut-off events. [2023-11-29 01:31:21,187 INFO L125 PetriNetUnfolderBase]: For 1011/1015 co-relation queries the response was YES. [2023-11-29 01:31:21,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6750 conditions, 2967 events. 1551/2967 cut-off events. For 1011/1015 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 17659 event pairs, 948 based on Foata normal form. 4/2853 useless extension candidates. Maximal degree in co-relation 6728. Up to 2185 conditions per place. [2023-11-29 01:31:21,200 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 34 selfloop transitions, 34 changer transitions 0/86 dead transitions. [2023-11-29 01:31:21,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 86 transitions, 549 flow [2023-11-29 01:31:21,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 01:31:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 01:31:21,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 595 transitions. [2023-11-29 01:31:21,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064207650273224 [2023-11-29 01:31:21,204 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 595 transitions. [2023-11-29 01:31:21,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 595 transitions. [2023-11-29 01:31:21,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:21,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 595 transitions. [2023-11-29 01:31:21,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 24.791666666666668) internal successors, (595), 24 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:21,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 61.0) internal successors, (1525), 25 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:21,209 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 61.0) internal successors, (1525), 25 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:21,210 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 383 flow. Second operand 24 states and 595 transitions. [2023-11-29 01:31:21,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 86 transitions, 549 flow [2023-11-29 01:31:21,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 86 transitions, 536 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-29 01:31:21,217 INFO L231 Difference]: Finished difference. Result has 102 places, 86 transitions, 481 flow [2023-11-29 01:31:21,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=481, PETRI_PLACES=102, PETRI_TRANSITIONS=86} [2023-11-29 01:31:21,218 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2023-11-29 01:31:21,218 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 86 transitions, 481 flow [2023-11-29 01:31:21,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:21,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:21,218 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:21,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:31:21,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:21,420 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:21,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:21,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1755516439, now seen corresponding path program 1 times [2023-11-29 01:31:21,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:21,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504774308] [2023-11-29 01:31:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:21,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:31:21,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:21,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504774308] [2023-11-29 01:31:21,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504774308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:21,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:21,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:31:21,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973619083] [2023-11-29 01:31:21,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:21,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:31:21,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:21,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:31:21,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:21,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2023-11-29 01:31:21,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 86 transitions, 481 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:21,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:21,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2023-11-29 01:31:21,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:21,810 INFO L124 PetriNetUnfolderBase]: 1249/2373 cut-off events. [2023-11-29 01:31:21,810 INFO L125 PetriNetUnfolderBase]: For 746/750 co-relation queries the response was YES. [2023-11-29 01:31:21,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5323 conditions, 2373 events. 1249/2373 cut-off events. For 746/750 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13119 event pairs, 732 based on Foata normal form. 0/2151 useless extension candidates. Maximal degree in co-relation 5301. Up to 1208 conditions per place. [2023-11-29 01:31:21,823 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 95 selfloop transitions, 10 changer transitions 4/126 dead transitions. [2023-11-29 01:31:21,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 126 transitions, 819 flow [2023-11-29 01:31:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:31:21,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:31:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2023-11-29 01:31:21,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6524590163934426 [2023-11-29 01:31:21,825 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 199 transitions. [2023-11-29 01:31:21,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 199 transitions. [2023-11-29 01:31:21,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:21,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 199 transitions. [2023-11-29 01:31:21,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:21,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:21,827 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:21,827 INFO L175 Difference]: Start difference. First operand has 102 places, 86 transitions, 481 flow. Second operand 5 states and 199 transitions. [2023-11-29 01:31:21,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 126 transitions, 819 flow [2023-11-29 01:31:21,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 126 transitions, 719 flow, removed 10 selfloop flow, removed 12 redundant places. [2023-11-29 01:31:21,832 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 422 flow [2023-11-29 01:31:21,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=422, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2023-11-29 01:31:21,833 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2023-11-29 01:31:21,833 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 422 flow [2023-11-29 01:31:21,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:21,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:21,833 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:21,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:31:21,834 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:21,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:21,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1931519905, now seen corresponding path program 1 times [2023-11-29 01:31:21,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:21,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897102652] [2023-11-29 01:31:21,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:21,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:31:21,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:21,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897102652] [2023-11-29 01:31:21,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897102652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:21,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:21,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:31:21,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370608089] [2023-11-29 01:31:21,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:21,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:31:21,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:21,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:31:21,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:21,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2023-11-29 01:31:21,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 422 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:21,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:21,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2023-11-29 01:31:21,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:22,196 INFO L124 PetriNetUnfolderBase]: 1051/2009 cut-off events. [2023-11-29 01:31:22,196 INFO L125 PetriNetUnfolderBase]: For 831/833 co-relation queries the response was YES. [2023-11-29 01:31:22,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4598 conditions, 2009 events. 1051/2009 cut-off events. For 831/833 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 10678 event pairs, 642 based on Foata normal form. 0/1871 useless extension candidates. Maximal degree in co-relation 4577. Up to 1226 conditions per place. [2023-11-29 01:31:22,202 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 61 selfloop transitions, 7 changer transitions 30/115 dead transitions. [2023-11-29 01:31:22,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 115 transitions, 689 flow [2023-11-29 01:31:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:31:22,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:31:22,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2023-11-29 01:31:22,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6262295081967213 [2023-11-29 01:31:22,204 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 191 transitions. [2023-11-29 01:31:22,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 191 transitions. [2023-11-29 01:31:22,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:22,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 191 transitions. [2023-11-29 01:31:22,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:22,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:22,207 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:22,207 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 422 flow. Second operand 5 states and 191 transitions. [2023-11-29 01:31:22,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 115 transitions, 689 flow [2023-11-29 01:31:22,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 115 transitions, 674 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:31:22,214 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 402 flow [2023-11-29 01:31:22,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2023-11-29 01:31:22,214 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2023-11-29 01:31:22,215 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 402 flow [2023-11-29 01:31:22,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:22,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:22,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:22,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:31:22,215 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:22,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:22,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1737099212, now seen corresponding path program 1 times [2023-11-29 01:31:22,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:22,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593241060] [2023-11-29 01:31:22,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:22,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:31:22,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:22,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593241060] [2023-11-29 01:31:22,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593241060] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:22,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301659543] [2023-11-29 01:31:22,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:22,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:22,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:22,295 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:22,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:31:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:22,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:31:22,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:31:22,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:31:22,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301659543] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:22,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:22,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-29 01:31:22,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193665838] [2023-11-29 01:31:22,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:22,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:31:22,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:31:22,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:31:23,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2023-11-29 01:31:23,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 402 flow. Second operand has 19 states, 19 states have (on average 21.0) internal successors, (399), 19 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:23,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:23,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2023-11-29 01:31:23,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:24,152 INFO L124 PetriNetUnfolderBase]: 1485/2617 cut-off events. [2023-11-29 01:31:24,152 INFO L125 PetriNetUnfolderBase]: For 1244/1288 co-relation queries the response was YES. [2023-11-29 01:31:24,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6378 conditions, 2617 events. 1485/2617 cut-off events. For 1244/1288 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 14010 event pairs, 444 based on Foata normal form. 52/2579 useless extension candidates. Maximal degree in co-relation 6355. Up to 551 conditions per place. [2023-11-29 01:31:24,166 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 157 selfloop transitions, 42 changer transitions 10/223 dead transitions. [2023-11-29 01:31:24,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 223 transitions, 1278 flow [2023-11-29 01:31:24,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:31:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 01:31:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 435 transitions. [2023-11-29 01:31:24,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509367681498829 [2023-11-29 01:31:24,169 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 435 transitions. [2023-11-29 01:31:24,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 435 transitions. [2023-11-29 01:31:24,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:24,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 435 transitions. [2023-11-29 01:31:24,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 31.071428571428573) internal successors, (435), 14 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:24,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 61.0) internal successors, (915), 15 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:24,174 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 61.0) internal successors, (915), 15 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:24,174 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 402 flow. Second operand 14 states and 435 transitions. [2023-11-29 01:31:24,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 223 transitions, 1278 flow [2023-11-29 01:31:24,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 223 transitions, 1212 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-11-29 01:31:24,189 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 484 flow [2023-11-29 01:31:24,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=484, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2023-11-29 01:31:24,190 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2023-11-29 01:31:24,191 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 484 flow [2023-11-29 01:31:24,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.0) internal successors, (399), 19 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:24,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:24,191 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2023-11-29 01:31:24,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:31:24,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:24,392 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:24,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:24,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2100858890, now seen corresponding path program 1 times [2023-11-29 01:31:24,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:24,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247691838] [2023-11-29 01:31:24,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:24,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:24,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:24,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247691838] [2023-11-29 01:31:24,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247691838] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:24,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527418741] [2023-11-29 01:31:24,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:24,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:24,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:24,598 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:24,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:31:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:24,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:31:24,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:24,742 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:24,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:24,912 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:24,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527418741] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:24,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:24,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2023-11-29 01:31:24,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24196299] [2023-11-29 01:31:24,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:24,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 01:31:24,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:24,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 01:31:24,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:31:24,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 01:31:24,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 484 flow. Second operand has 28 states, 28 states have (on average 23.071428571428573) internal successors, (646), 28 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:24,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:24,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 01:31:24,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:25,442 INFO L124 PetriNetUnfolderBase]: 1422/2747 cut-off events. [2023-11-29 01:31:25,442 INFO L125 PetriNetUnfolderBase]: For 1921/1921 co-relation queries the response was YES. [2023-11-29 01:31:25,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6548 conditions, 2747 events. 1422/2747 cut-off events. For 1921/1921 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 15885 event pairs, 876 based on Foata normal form. 14/2559 useless extension candidates. Maximal degree in co-relation 6528. Up to 2006 conditions per place. [2023-11-29 01:31:25,453 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 40 selfloop transitions, 72 changer transitions 0/131 dead transitions. [2023-11-29 01:31:25,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 131 transitions, 1065 flow [2023-11-29 01:31:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 01:31:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 01:31:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 684 transitions. [2023-11-29 01:31:25,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312736443883985 [2023-11-29 01:31:25,455 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 684 transitions. [2023-11-29 01:31:25,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 684 transitions. [2023-11-29 01:31:25,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:25,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 684 transitions. [2023-11-29 01:31:25,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 26.307692307692307) internal successors, (684), 26 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:25,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 61.0) internal successors, (1647), 27 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:25,462 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 61.0) internal successors, (1647), 27 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:25,462 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 484 flow. Second operand 26 states and 684 transitions. [2023-11-29 01:31:25,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 131 transitions, 1065 flow [2023-11-29 01:31:25,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 131 transitions, 1024 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-29 01:31:25,472 INFO L231 Difference]: Finished difference. Result has 128 places, 131 transitions, 996 flow [2023-11-29 01:31:25,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=996, PETRI_PLACES=128, PETRI_TRANSITIONS=131} [2023-11-29 01:31:25,472 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2023-11-29 01:31:25,473 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 131 transitions, 996 flow [2023-11-29 01:31:25,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 23.071428571428573) internal successors, (646), 28 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:25,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:25,473 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:25,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:31:25,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:25,674 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:25,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:25,674 INFO L85 PathProgramCache]: Analyzing trace with hash -102662530, now seen corresponding path program 1 times [2023-11-29 01:31:25,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:25,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380320867] [2023-11-29 01:31:25,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:25,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:31:25,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:25,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380320867] [2023-11-29 01:31:25,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380320867] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:25,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548264269] [2023-11-29 01:31:25,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:25,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:25,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:25,755 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:25,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:31:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:25,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:31:25,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:31:25,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:26,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:31:26,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548264269] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:26,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:26,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-29 01:31:26,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383097809] [2023-11-29 01:31:26,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:26,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:31:26,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:26,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:31:26,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:31:26,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2023-11-29 01:31:26,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 131 transitions, 996 flow. Second operand has 19 states, 19 states have (on average 21.210526315789473) internal successors, (403), 19 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:26,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:26,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2023-11-29 01:31:26,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:27,123 INFO L124 PetriNetUnfolderBase]: 1394/2517 cut-off events. [2023-11-29 01:31:27,124 INFO L125 PetriNetUnfolderBase]: For 1568/1584 co-relation queries the response was YES. [2023-11-29 01:31:27,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6190 conditions, 2517 events. 1394/2517 cut-off events. For 1568/1584 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13155 event pairs, 414 based on Foata normal form. 26/2373 useless extension candidates. Maximal degree in co-relation 6162. Up to 587 conditions per place. [2023-11-29 01:31:27,131 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 103 selfloop transitions, 71 changer transitions 71/258 dead transitions. [2023-11-29 01:31:27,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 258 transitions, 1872 flow [2023-11-29 01:31:27,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:31:27,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 01:31:27,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 435 transitions. [2023-11-29 01:31:27,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509367681498829 [2023-11-29 01:31:27,133 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 435 transitions. [2023-11-29 01:31:27,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 435 transitions. [2023-11-29 01:31:27,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:27,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 435 transitions. [2023-11-29 01:31:27,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 31.071428571428573) internal successors, (435), 14 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:27,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 61.0) internal successors, (915), 15 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:27,135 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 61.0) internal successors, (915), 15 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:27,135 INFO L175 Difference]: Start difference. First operand has 128 places, 131 transitions, 996 flow. Second operand 14 states and 435 transitions. [2023-11-29 01:31:27,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 258 transitions, 1872 flow [2023-11-29 01:31:27,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 258 transitions, 1687 flow, removed 54 selfloop flow, removed 12 redundant places. [2023-11-29 01:31:27,145 INFO L231 Difference]: Finished difference. Result has 129 places, 124 transitions, 919 flow [2023-11-29 01:31:27,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=919, PETRI_PLACES=129, PETRI_TRANSITIONS=124} [2023-11-29 01:31:27,145 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2023-11-29 01:31:27,145 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 124 transitions, 919 flow [2023-11-29 01:31:27,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.210526315789473) internal successors, (403), 19 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:27,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:27,146 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:27,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 01:31:27,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:31:27,347 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:27,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:27,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1345299572, now seen corresponding path program 1 times [2023-11-29 01:31:27,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:27,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709352449] [2023-11-29 01:31:27,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:27,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:31:27,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:27,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709352449] [2023-11-29 01:31:27,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709352449] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:27,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634985902] [2023-11-29 01:31:27,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:27,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:27,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:27,432 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:27,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:31:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:27,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:31:27,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:31:27,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:31:27,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634985902] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:27,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:27,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-11-29 01:31:27,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512108652] [2023-11-29 01:31:27,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:27,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:31:27,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:27,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:31:27,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:31:27,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2023-11-29 01:31:27,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 124 transitions, 919 flow. Second operand has 19 states, 19 states have (on average 21.157894736842106) internal successors, (402), 19 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:27,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:27,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2023-11-29 01:31:27,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:28,706 INFO L124 PetriNetUnfolderBase]: 1696/2986 cut-off events. [2023-11-29 01:31:28,706 INFO L125 PetriNetUnfolderBase]: For 2603/2623 co-relation queries the response was YES. [2023-11-29 01:31:28,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7909 conditions, 2986 events. 1696/2986 cut-off events. For 2603/2623 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 15578 event pairs, 579 based on Foata normal form. 52/2975 useless extension candidates. Maximal degree in co-relation 7882. Up to 907 conditions per place. [2023-11-29 01:31:28,717 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 219 selfloop transitions, 69 changer transitions 10/311 dead transitions. [2023-11-29 01:31:28,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 311 transitions, 2448 flow [2023-11-29 01:31:28,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:31:28,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 01:31:28,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 507 transitions. [2023-11-29 01:31:28,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4889103182256509 [2023-11-29 01:31:28,719 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 507 transitions. [2023-11-29 01:31:28,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 507 transitions. [2023-11-29 01:31:28,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:28,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 507 transitions. [2023-11-29 01:31:28,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 29.823529411764707) internal successors, (507), 17 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:28,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 61.0) internal successors, (1098), 18 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:28,722 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 61.0) internal successors, (1098), 18 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:28,722 INFO L175 Difference]: Start difference. First operand has 129 places, 124 transitions, 919 flow. Second operand 17 states and 507 transitions. [2023-11-29 01:31:28,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 311 transitions, 2448 flow [2023-11-29 01:31:28,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 311 transitions, 2248 flow, removed 23 selfloop flow, removed 9 redundant places. [2023-11-29 01:31:28,734 INFO L231 Difference]: Finished difference. Result has 133 places, 161 transitions, 1453 flow [2023-11-29 01:31:28,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1453, PETRI_PLACES=133, PETRI_TRANSITIONS=161} [2023-11-29 01:31:28,735 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 79 predicate places. [2023-11-29 01:31:28,735 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 161 transitions, 1453 flow [2023-11-29 01:31:28,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.157894736842106) internal successors, (402), 19 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:28,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:28,736 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:28,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:31:28,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:31:28,936 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:28,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:28,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1021211709, now seen corresponding path program 1 times [2023-11-29 01:31:28,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:28,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243223240] [2023-11-29 01:31:28,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:28,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:31:29,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:29,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243223240] [2023-11-29 01:31:29,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243223240] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:29,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374298131] [2023-11-29 01:31:29,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:29,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:29,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:29,016 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:29,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:31:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:29,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:31:29,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:29,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:31:29,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:31:29,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374298131] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:29,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:29,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-11-29 01:31:29,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102143209] [2023-11-29 01:31:29,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:29,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:31:29,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:29,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:31:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:31:29,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2023-11-29 01:31:29,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 161 transitions, 1453 flow. Second operand has 19 states, 19 states have (on average 21.36842105263158) internal successors, (406), 19 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:29,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:29,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2023-11-29 01:31:29,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:30,353 INFO L124 PetriNetUnfolderBase]: 1921/3361 cut-off events. [2023-11-29 01:31:30,353 INFO L125 PetriNetUnfolderBase]: For 3763/3817 co-relation queries the response was YES. [2023-11-29 01:31:30,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8964 conditions, 3361 events. 1921/3361 cut-off events. For 3763/3817 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 17239 event pairs, 669 based on Foata normal form. 34/3188 useless extension candidates. Maximal degree in co-relation 8933. Up to 1195 conditions per place. [2023-11-29 01:31:30,368 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 157 selfloop transitions, 64 changer transitions 81/316 dead transitions. [2023-11-29 01:31:30,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 316 transitions, 2695 flow [2023-11-29 01:31:30,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:31:30,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 01:31:30,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 507 transitions. [2023-11-29 01:31:30,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4889103182256509 [2023-11-29 01:31:30,370 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 507 transitions. [2023-11-29 01:31:30,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 507 transitions. [2023-11-29 01:31:30,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:30,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 507 transitions. [2023-11-29 01:31:30,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 29.823529411764707) internal successors, (507), 17 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:30,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 61.0) internal successors, (1098), 18 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:30,374 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 61.0) internal successors, (1098), 18 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:30,374 INFO L175 Difference]: Start difference. First operand has 133 places, 161 transitions, 1453 flow. Second operand 17 states and 507 transitions. [2023-11-29 01:31:30,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 316 transitions, 2695 flow [2023-11-29 01:31:30,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 316 transitions, 2629 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-29 01:31:30,390 INFO L231 Difference]: Finished difference. Result has 147 places, 159 transitions, 1559 flow [2023-11-29 01:31:30,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1559, PETRI_PLACES=147, PETRI_TRANSITIONS=159} [2023-11-29 01:31:30,391 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 93 predicate places. [2023-11-29 01:31:30,391 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 159 transitions, 1559 flow [2023-11-29 01:31:30,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.36842105263158) internal successors, (406), 19 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:30,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:30,392 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:30,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:31:30,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:30,593 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:30,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:30,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1365226961, now seen corresponding path program 2 times [2023-11-29 01:31:30,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:30,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446000582] [2023-11-29 01:31:30,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:30,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:31:30,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:30,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446000582] [2023-11-29 01:31:30,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446000582] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:30,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957536041] [2023-11-29 01:31:30,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:31:30,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:30,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:30,817 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:30,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:31:30,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:31:30,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:31:30,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:31:30,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:31:30,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:31:31,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957536041] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:31,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:31,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 3, 3] total 15 [2023-11-29 01:31:31,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212000020] [2023-11-29 01:31:31,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:31,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:31:31,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:31,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:31:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:31:31,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 61 [2023-11-29 01:31:31,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 159 transitions, 1559 flow. Second operand has 16 states, 16 states have (on average 17.3125) internal successors, (277), 16 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:31,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:31,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 61 [2023-11-29 01:31:31,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:32,344 INFO L124 PetriNetUnfolderBase]: 2645/4576 cut-off events. [2023-11-29 01:31:32,344 INFO L125 PetriNetUnfolderBase]: For 6416/6456 co-relation queries the response was YES. [2023-11-29 01:31:32,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13352 conditions, 4576 events. 2645/4576 cut-off events. For 6416/6456 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 25193 event pairs, 756 based on Foata normal form. 68/4575 useless extension candidates. Maximal degree in co-relation 13317. Up to 1148 conditions per place. [2023-11-29 01:31:32,367 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 300 selfloop transitions, 28 changer transitions 16/358 dead transitions. [2023-11-29 01:31:32,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 358 transitions, 3459 flow [2023-11-29 01:31:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:31:32,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 01:31:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 419 transitions. [2023-11-29 01:31:32,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4293032786885246 [2023-11-29 01:31:32,368 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 419 transitions. [2023-11-29 01:31:32,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 419 transitions. [2023-11-29 01:31:32,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:32,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 419 transitions. [2023-11-29 01:31:32,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 26.1875) internal successors, (419), 16 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:32,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 61.0) internal successors, (1037), 17 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:32,371 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 61.0) internal successors, (1037), 17 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:32,371 INFO L175 Difference]: Start difference. First operand has 147 places, 159 transitions, 1559 flow. Second operand 16 states and 419 transitions. [2023-11-29 01:31:32,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 358 transitions, 3459 flow [2023-11-29 01:31:32,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 358 transitions, 3262 flow, removed 33 selfloop flow, removed 14 redundant places. [2023-11-29 01:31:32,406 INFO L231 Difference]: Finished difference. Result has 143 places, 169 transitions, 1613 flow [2023-11-29 01:31:32,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1613, PETRI_PLACES=143, PETRI_TRANSITIONS=169} [2023-11-29 01:31:32,407 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2023-11-29 01:31:32,407 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 169 transitions, 1613 flow [2023-11-29 01:31:32,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.3125) internal successors, (277), 16 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:32,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:32,408 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:32,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:31:32,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:32,614 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:32,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:32,614 INFO L85 PathProgramCache]: Analyzing trace with hash 2066582681, now seen corresponding path program 2 times [2023-11-29 01:31:32,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:32,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84308008] [2023-11-29 01:31:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:32,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:31:32,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:32,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84308008] [2023-11-29 01:31:32,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84308008] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:32,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342976985] [2023-11-29 01:31:32,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:31:32,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:32,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:32,826 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:32,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:31:32,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:31:32,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:31:32,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:31:32,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:31:32,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:31:33,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342976985] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:33,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:33,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 3, 3] total 15 [2023-11-29 01:31:33,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515973161] [2023-11-29 01:31:33,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:33,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:31:33,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:33,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:31:33,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:31:33,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 61 [2023-11-29 01:31:33,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 169 transitions, 1613 flow. Second operand has 16 states, 16 states have (on average 17.5625) internal successors, (281), 16 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:33,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:33,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 61 [2023-11-29 01:31:33,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:34,250 INFO L124 PetriNetUnfolderBase]: 2580/4497 cut-off events. [2023-11-29 01:31:34,250 INFO L125 PetriNetUnfolderBase]: For 6981/6981 co-relation queries the response was YES. [2023-11-29 01:31:34,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13151 conditions, 4497 events. 2580/4497 cut-off events. For 6981/6981 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 24630 event pairs, 780 based on Foata normal form. 38/4280 useless extension candidates. Maximal degree in co-relation 13118. Up to 1234 conditions per place. [2023-11-29 01:31:34,262 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 114 selfloop transitions, 9 changer transitions 228/353 dead transitions. [2023-11-29 01:31:34,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 353 transitions, 3384 flow [2023-11-29 01:31:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:31:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 01:31:34,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 419 transitions. [2023-11-29 01:31:34,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4293032786885246 [2023-11-29 01:31:34,264 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 419 transitions. [2023-11-29 01:31:34,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 419 transitions. [2023-11-29 01:31:34,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:34,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 419 transitions. [2023-11-29 01:31:34,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 26.1875) internal successors, (419), 16 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:34,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 61.0) internal successors, (1037), 17 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:34,266 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 61.0) internal successors, (1037), 17 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:34,266 INFO L175 Difference]: Start difference. First operand has 143 places, 169 transitions, 1613 flow. Second operand 16 states and 419 transitions. [2023-11-29 01:31:34,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 353 transitions, 3384 flow [2023-11-29 01:31:34,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 353 transitions, 3362 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-29 01:31:34,287 INFO L231 Difference]: Finished difference. Result has 150 places, 98 transitions, 1244 flow [2023-11-29 01:31:34,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1244, PETRI_PLACES=150, PETRI_TRANSITIONS=98} [2023-11-29 01:31:34,287 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2023-11-29 01:31:34,288 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 98 transitions, 1244 flow [2023-11-29 01:31:34,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.5625) internal successors, (281), 16 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:34,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:34,288 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2023-11-29 01:31:34,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:31:34,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 01:31:34,488 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 01:31:34,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:34,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1431694287, now seen corresponding path program 2 times [2023-11-29 01:31:34,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:34,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215170243] [2023-11-29 01:31:34,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:34,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:35,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:35,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215170243] [2023-11-29 01:31:35,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215170243] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:35,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518540846] [2023-11-29 01:31:35,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:31:35,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:35,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:35,077 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:35,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:31:35,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:31:35,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:31:35,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:31:35,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-29 01:31:35,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-29 01:31:35,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518540846] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:35,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:35,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2023-11-29 01:31:35,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686210292] [2023-11-29 01:31:35,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:35,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 01:31:35,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:35,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 01:31:35,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:31:35,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 01:31:35,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 98 transitions, 1244 flow. Second operand has 31 states, 31 states have (on average 23.096774193548388) internal successors, (716), 31 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:35,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:35,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 01:31:35,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:36,092 INFO L124 PetriNetUnfolderBase]: 15/225 cut-off events. [2023-11-29 01:31:36,092 INFO L125 PetriNetUnfolderBase]: For 1677/1677 co-relation queries the response was YES. [2023-11-29 01:31:36,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 225 events. 15/225 cut-off events. For 1677/1677 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 695 event pairs, 0 based on Foata normal form. 8/233 useless extension candidates. Maximal degree in co-relation 1237. Up to 70 conditions per place. [2023-11-29 01:31:36,093 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 0 selfloop transitions, 0 changer transitions 104/104 dead transitions. [2023-11-29 01:31:36,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 104 transitions, 1518 flow [2023-11-29 01:31:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 01:31:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 01:31:36,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 733 transitions. [2023-11-29 01:31:36,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005464480874317 [2023-11-29 01:31:36,095 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 733 transitions. [2023-11-29 01:31:36,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 733 transitions. [2023-11-29 01:31:36,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:36,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 733 transitions. [2023-11-29 01:31:36,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 24.433333333333334) internal successors, (733), 30 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:36,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 61.0) internal successors, (1891), 31 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:36,101 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 61.0) internal successors, (1891), 31 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:36,101 INFO L175 Difference]: Start difference. First operand has 150 places, 98 transitions, 1244 flow. Second operand 30 states and 733 transitions. [2023-11-29 01:31:36,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 104 transitions, 1518 flow [2023-11-29 01:31:36,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 104 transitions, 1267 flow, removed 8 selfloop flow, removed 21 redundant places. [2023-11-29 01:31:36,107 INFO L231 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2023-11-29 01:31:36,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2023-11-29 01:31:36,107 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2023-11-29 01:31:36,107 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2023-11-29 01:31:36,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 23.096774193548388) internal successors, (716), 31 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:36,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2023-11-29 01:31:36,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-11-29 01:31:36,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-11-29 01:31:36,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-11-29 01:31:36,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-11-29 01:31:36,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-11-29 01:31:36,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-11-29 01:31:36,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-11-29 01:31:36,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-11-29 01:31:36,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-11-29 01:31:36,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-11-29 01:31:36,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-11-29 01:31:36,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 22 remaining) [2023-11-29 01:31:36,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2023-11-29 01:31:36,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-11-29 01:31:36,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-11-29 01:31:36,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-11-29 01:31:36,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-11-29 01:31:36,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-11-29 01:31:36,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-11-29 01:31:36,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-11-29 01:31:36,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-11-29 01:31:36,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:31:36,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 01:31:36,313 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:36,318 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 01:31:36,318 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:31:36,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:31:36 BasicIcfg [2023-11-29 01:31:36,323 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:31:36,323 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:31:36,323 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:31:36,323 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:31:36,324 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:31:12" (3/4) ... [2023-11-29 01:31:36,325 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 01:31:36,327 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 01:31:36,328 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 01:31:36,336 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 140 nodes and edges [2023-11-29 01:31:36,336 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2023-11-29 01:31:36,337 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-29 01:31:36,337 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 01:31:36,424 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 01:31:36,424 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 01:31:36,424 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:31:36,425 INFO L158 Benchmark]: Toolchain (without parser) took 25234.59ms. Allocated memory was 172.0MB in the beginning and 484.4MB in the end (delta: 312.5MB). Free memory was 131.9MB in the beginning and 378.2MB in the end (delta: -246.4MB). Peak memory consumption was 67.8MB. Max. memory is 16.1GB. [2023-11-29 01:31:36,425 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 172.0MB. Free memory is still 113.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:31:36,426 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.23ms. Allocated memory is still 172.0MB. Free memory was 131.3MB in the beginning and 119.3MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 01:31:36,426 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.45ms. Allocated memory is still 172.0MB. Free memory was 119.3MB in the beginning and 117.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:31:36,427 INFO L158 Benchmark]: Boogie Preprocessor took 58.78ms. Allocated memory is still 172.0MB. Free memory was 117.2MB in the beginning and 114.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:31:36,427 INFO L158 Benchmark]: RCFGBuilder took 832.34ms. Allocated memory was 172.0MB in the beginning and 226.5MB in the end (delta: 54.5MB). Free memory was 114.6MB in the beginning and 175.7MB in the end (delta: -61.2MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. [2023-11-29 01:31:36,428 INFO L158 Benchmark]: TraceAbstraction took 23921.98ms. Allocated memory was 226.5MB in the beginning and 484.4MB in the end (delta: 257.9MB). Free memory was 174.7MB in the beginning and 384.2MB in the end (delta: -209.5MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. [2023-11-29 01:31:36,428 INFO L158 Benchmark]: Witness Printer took 101.30ms. Allocated memory is still 484.4MB. Free memory was 384.2MB in the beginning and 378.2MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 01:31:36,430 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 172.0MB. Free memory is still 113.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.23ms. Allocated memory is still 172.0MB. Free memory was 131.3MB in the beginning and 119.3MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.45ms. Allocated memory is still 172.0MB. Free memory was 119.3MB in the beginning and 117.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.78ms. Allocated memory is still 172.0MB. Free memory was 117.2MB in the beginning and 114.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 832.34ms. Allocated memory was 172.0MB in the beginning and 226.5MB in the end (delta: 54.5MB). Free memory was 114.6MB in the beginning and 175.7MB in the end (delta: -61.2MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. * TraceAbstraction took 23921.98ms. Allocated memory was 226.5MB in the beginning and 484.4MB in the end (delta: 257.9MB). Free memory was 174.7MB in the beginning and 384.2MB in the end (delta: -209.5MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. * Witness Printer took 101.30ms. Allocated memory is still 484.4MB. Free memory was 384.2MB in the beginning and 378.2MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 86 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.8s, OverallIterations: 22, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3599 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3372 mSDsluCounter, 2916 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2877 mSDsCounter, 279 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12566 IncrementalHoareTripleChecker+Invalid, 12845 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 279 mSolverCounterUnsat, 39 mSDtfsCounter, 12566 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 746 GetRequests, 400 SyntacticMatches, 11 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1944 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1613occurred in iteration=20, InterpolantAutomatonStates: 238, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 640 NumberOfCodeBlocks, 552 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 829 ConstructedInterpolants, 0 QuantifiedInterpolants, 2768 SizeOfPredicates, 50 NumberOfNonLiveVariables, 2023 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 45 InterpolantComputations, 12 PerfectInterpolantSequences, 638/1180 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 01:31:36,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddae982-57e3-4c73-828a-ef2844f34b40/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE