./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/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_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/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_44a30ce3-3888-4f95-a580-6559641e2ce8/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 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:52:44,528 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:52:44,599 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 04:52:44,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:52:44,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:52:44,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:52:44,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:52:44,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:52:44,633 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:52:44,634 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:52:44,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:52:44,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:52:44,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:52:44,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:52:44,637 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:52:44,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:52:44,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:52:44,639 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:52:44,639 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:52:44,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:52:44,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:52:44,641 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:52:44,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:52:44,642 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:52:44,642 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 04:52:44,643 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:52:44,643 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:52:44,643 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:52:44,658 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:52:44,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:52:44,659 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:52:44,660 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:52:44,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:52:44,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:52:44,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:52:44,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:52:44,661 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:52:44,662 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:52:44,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:52:44,662 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:52:44,662 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:52:44,663 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:52:44,663 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:52:44,663 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:52:44,663 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_44a30ce3-3888-4f95-a580-6559641e2ce8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2023-11-29 04:52:44,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:52:44,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:52:44,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:52:44,947 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:52:44,947 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:52:44,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-29 04:52:47,743 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:52:47,951 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:52:47,952 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-29 04:52:47,960 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/data/ce2190aed/04ce5f4eaf8a4fb5b141a877fefa2d47/FLAG1f9ef9818 [2023-11-29 04:52:47,975 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/data/ce2190aed/04ce5f4eaf8a4fb5b141a877fefa2d47 [2023-11-29 04:52:47,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:52:47,979 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:52:47,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:52:47,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:52:47,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:52:47,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:52:47" (1/1) ... [2023-11-29 04:52:47,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bdf9171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:47, skipping insertion in model container [2023-11-29 04:52:47,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:52:47" (1/1) ... [2023-11-29 04:52:48,022 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:52:48,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:52:48,225 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:52:48,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:52:48,280 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:52:48,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:48 WrapperNode [2023-11-29 04:52:48,281 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:52:48,282 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:52:48,282 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:52:48,282 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:52:48,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:48" (1/1) ... [2023-11-29 04:52:48,299 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:48" (1/1) ... [2023-11-29 04:52:48,330 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 191 [2023-11-29 04:52:48,331 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:52:48,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:52:48,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:52:48,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:52:48,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:48" (1/1) ... [2023-11-29 04:52:48,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:48" (1/1) ... [2023-11-29 04:52:48,348 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:48" (1/1) ... [2023-11-29 04:52:48,370 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 15, 2, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 3, 1, 1, 1]. [2023-11-29 04:52:48,371 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:48" (1/1) ... [2023-11-29 04:52:48,371 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:48" (1/1) ... [2023-11-29 04:52:48,384 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:48" (1/1) ... [2023-11-29 04:52:48,389 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:48" (1/1) ... [2023-11-29 04:52:48,392 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:48" (1/1) ... [2023-11-29 04:52:48,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:48" (1/1) ... [2023-11-29 04:52:48,400 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:52:48,401 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:52:48,401 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:52:48,401 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:52:48,402 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:48" (1/1) ... [2023-11-29 04:52:48,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:52:48,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:52:48,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:52:48,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:52:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:52:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:52:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:52:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:52:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:52:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:52:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 04:52:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:52:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:52:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:52:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:52:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 04:52:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 04:52:48,472 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 04:52:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 04:52:48,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 04:52:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 04:52:48,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 04:52:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:52:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:52:48,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:52:48,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:52:48,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 04:52:48,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:52:48,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:52:48,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:52:48,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:52:48,477 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 04:52:48,615 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:52:48,623 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:52:49,058 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:52:49,466 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:52:49,466 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 04:52:49,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:52:49 BoogieIcfgContainer [2023-11-29 04:52:49,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:52:49,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:52:49,471 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:52:49,474 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:52:49,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:52:47" (1/3) ... [2023-11-29 04:52:49,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560b03d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:52:49, skipping insertion in model container [2023-11-29 04:52:49,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:52:48" (2/3) ... [2023-11-29 04:52:49,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560b03d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:52:49, skipping insertion in model container [2023-11-29 04:52:49,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:52:49" (3/3) ... [2023-11-29 04:52:49,478 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-11-29 04:52:49,488 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:52:49,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:52:49,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-29 04:52:49,501 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:52:49,575 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 04:52:49,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 91 transitions, 203 flow [2023-11-29 04:52:49,665 INFO L124 PetriNetUnfolderBase]: 15/88 cut-off events. [2023-11-29 04:52:49,665 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 04:52:49,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 15/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 263 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2023-11-29 04:52:49,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 91 transitions, 203 flow [2023-11-29 04:52:49,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 86 transitions, 187 flow [2023-11-29 04:52:49,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:52:49,694 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;@4c92acdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:52:49,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-29 04:52:49,700 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:52:49,700 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 04:52:49,700 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:52:49,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:52:49,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 04:52:49,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 04:52:49,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:49,707 INFO L85 PathProgramCache]: Analyzing trace with hash 797623, now seen corresponding path program 1 times [2023-11-29 04:52:49,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:49,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269772914] [2023-11-29 04:52:49,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:49,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:50,028 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 04:52:50,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:50,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269772914] [2023-11-29 04:52:50,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269772914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:52:50,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:52:50,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:52:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365615257] [2023-11-29 04:52:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:52:50,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:52:50,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:52:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:52:50,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2023-11-29 04:52:50,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 187 flow. Second operand has 4 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 04:52:50,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:52:50,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2023-11-29 04:52:50,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:52:51,010 INFO L124 PetriNetUnfolderBase]: 4197/7110 cut-off events. [2023-11-29 04:52:51,010 INFO L125 PetriNetUnfolderBase]: For 259/259 co-relation queries the response was YES. [2023-11-29 04:52:51,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12679 conditions, 7110 events. 4197/7110 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 47594 event pairs, 2653 based on Foata normal form. 3/4933 useless extension candidates. Maximal degree in co-relation 11574. Up to 5339 conditions per place. [2023-11-29 04:52:51,071 INFO L140 encePairwiseOnDemand]: 75/91 looper letters, 55 selfloop transitions, 10 changer transitions 0/95 dead transitions. [2023-11-29 04:52:51,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 95 transitions, 335 flow [2023-11-29 04:52:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:52:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:52:51,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2023-11-29 04:52:51,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2023-11-29 04:52:51,084 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 203 transitions. [2023-11-29 04:52:51,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 203 transitions. [2023-11-29 04:52:51,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:52:51,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 203 transitions. [2023-11-29 04:52:51,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 04:52:51,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:51,097 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:51,099 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 187 flow. Second operand 4 states and 203 transitions. [2023-11-29 04:52:51,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 95 transitions, 335 flow [2023-11-29 04:52:51,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 95 transitions, 326 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 04:52:51,111 INFO L231 Difference]: Finished difference. Result has 82 places, 95 transitions, 266 flow [2023-11-29 04:52:51,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=82, PETRI_TRANSITIONS=95} [2023-11-29 04:52:51,117 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2023-11-29 04:52:51,117 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 95 transitions, 266 flow [2023-11-29 04:52:51,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 04:52:51,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:52:51,118 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 04:52:51,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:52:51,119 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 04:52:51,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:51,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2007025126, now seen corresponding path program 1 times [2023-11-29 04:52:51,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:51,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302129708] [2023-11-29 04:52:51,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:51,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:51,295 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 04:52:51,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:51,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302129708] [2023-11-29 04:52:51,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302129708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:52:51,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747640348] [2023-11-29 04:52:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:51,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:51,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:52:51,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:52:51,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:52:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:51,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:52:51,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:52:51,458 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 04:52:51,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:52:51,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747640348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:52:51,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:52:51,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 04:52:51,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884887228] [2023-11-29 04:52:51,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:52:51,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:52:51,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:51,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:52:51,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:52:51,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2023-11-29 04:52:51,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 04:52:51,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:52:51,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2023-11-29 04:52:51,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:52:52,293 INFO L124 PetriNetUnfolderBase]: 4197/7107 cut-off events. [2023-11-29 04:52:52,294 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-29 04:52:52,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12624 conditions, 7107 events. 4197/7107 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 47549 event pairs, 2653 based on Foata normal form. 3/4935 useless extension candidates. Maximal degree in co-relation 12551. Up to 5324 conditions per place. [2023-11-29 04:52:52,357 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 45 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2023-11-29 04:52:52,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 92 transitions, 378 flow [2023-11-29 04:52:52,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:52:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:52:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 263 transitions. [2023-11-29 04:52:52,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816849816849817 [2023-11-29 04:52:52,361 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 263 transitions. [2023-11-29 04:52:52,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 263 transitions. [2023-11-29 04:52:52,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:52:52,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 263 transitions. [2023-11-29 04:52:52,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 0 states have call successors, (0), 0 states 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 04:52:52,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 04:52:52,366 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 04:52:52,366 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 266 flow. Second operand 6 states and 263 transitions. [2023-11-29 04:52:52,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 92 transitions, 378 flow [2023-11-29 04:52:52,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 92 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:52:52,371 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 288 flow [2023-11-29 04:52:52,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2023-11-29 04:52:52,372 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2023-11-29 04:52:52,372 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 288 flow [2023-11-29 04:52:52,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 04:52:52,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:52:52,373 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 04:52:52,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:52:52,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:52,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 04:52:52,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2088235965, now seen corresponding path program 1 times [2023-11-29 04:52:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:52,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874060118] [2023-11-29 04:52:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:52,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:52,666 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 04:52:52,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:52,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874060118] [2023-11-29 04:52:52,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874060118] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:52:52,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379363374] [2023-11-29 04:52:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:52,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:52,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:52:52,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:52:52,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:52:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:52,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:52:52,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:52:52,795 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 04:52:52,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:52:52,844 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 04:52:52,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379363374] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:52:52,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:52:52,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 04:52:52,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921459970] [2023-11-29 04:52:52,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:52:52,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:52:52,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:52,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:52:52,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:52:52,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2023-11-29 04:52:52,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 288 flow. Second operand has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 12 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 04:52:52,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:52:52,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2023-11-29 04:52:52,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:52:53,933 INFO L124 PetriNetUnfolderBase]: 4206/7143 cut-off events. [2023-11-29 04:52:53,933 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2023-11-29 04:52:53,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12765 conditions, 7143 events. 4206/7143 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 48034 event pairs, 2653 based on Foata normal form. 9/4977 useless extension candidates. Maximal degree in co-relation 12553. Up to 5339 conditions per place. [2023-11-29 04:52:53,997 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 52 selfloop transitions, 37 changer transitions 0/119 dead transitions. [2023-11-29 04:52:53,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 119 transitions, 640 flow [2023-11-29 04:52:53,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:52:53,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:52:54,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 428 transitions. [2023-11-29 04:52:54,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4703296703296703 [2023-11-29 04:52:54,002 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 428 transitions. [2023-11-29 04:52:54,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 428 transitions. [2023-11-29 04:52:54,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:52:54,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 428 transitions. [2023-11-29 04:52:54,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 42.8) internal successors, (428), 10 states have internal predecessors, (428), 0 states have call successors, (0), 0 states 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 04:52:54,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:54,010 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:54,011 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 288 flow. Second operand 10 states and 428 transitions. [2023-11-29 04:52:54,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 119 transitions, 640 flow [2023-11-29 04:52:54,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 557 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-29 04:52:54,019 INFO L231 Difference]: Finished difference. Result has 91 places, 119 transitions, 503 flow [2023-11-29 04:52:54,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=503, PETRI_PLACES=91, PETRI_TRANSITIONS=119} [2023-11-29 04:52:54,020 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 10 predicate places. [2023-11-29 04:52:54,021 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 119 transitions, 503 flow [2023-11-29 04:52:54,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 12 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 04:52:54,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:52:54,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:54,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:52:54,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:54,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 04:52:54,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:54,223 INFO L85 PathProgramCache]: Analyzing trace with hash 452543221, now seen corresponding path program 1 times [2023-11-29 04:52:54,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:54,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429436299] [2023-11-29 04:52:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:54,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:54,312 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 04:52:54,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:54,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429436299] [2023-11-29 04:52:54,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429436299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:52:54,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:52:54,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:52:54,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301128732] [2023-11-29 04:52:54,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:52:54,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:52:54,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:54,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:52:54,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:52:54,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 91 [2023-11-29 04:52:54,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 119 transitions, 503 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 04:52:54,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:52:54,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 91 [2023-11-29 04:52:54,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:52:55,648 INFO L124 PetriNetUnfolderBase]: 7405/11316 cut-off events. [2023-11-29 04:52:55,648 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2023-11-29 04:52:55,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21344 conditions, 11316 events. 7405/11316 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 68211 event pairs, 3613 based on Foata normal form. 146/8160 useless extension candidates. Maximal degree in co-relation 21246. Up to 7218 conditions per place. [2023-11-29 04:52:55,758 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 141 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2023-11-29 04:52:55,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 175 transitions, 911 flow [2023-11-29 04:52:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:52:55,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:52:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-29 04:52:55,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005494505494505 [2023-11-29 04:52:55,761 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-29 04:52:55,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-29 04:52:55,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:52:55,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-29 04:52:55,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 04:52:55,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:55,766 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:55,766 INFO L175 Difference]: Start difference. First operand has 91 places, 119 transitions, 503 flow. Second operand 4 states and 255 transitions. [2023-11-29 04:52:55,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 175 transitions, 911 flow [2023-11-29 04:52:55,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 175 transitions, 874 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-29 04:52:55,774 INFO L231 Difference]: Finished difference. Result has 94 places, 122 transitions, 495 flow [2023-11-29 04:52:55,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=495, PETRI_PLACES=94, PETRI_TRANSITIONS=122} [2023-11-29 04:52:55,775 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2023-11-29 04:52:55,776 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 122 transitions, 495 flow [2023-11-29 04:52:55,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 04:52:55,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:52:55,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:55,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:52:55,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 04:52:55,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:55,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1143970576, now seen corresponding path program 1 times [2023-11-29 04:52:55,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:55,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650710961] [2023-11-29 04:52:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:55,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:55,895 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 04:52:55,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:55,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650710961] [2023-11-29 04:52:55,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650710961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:52:55,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:52:55,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:52:55,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831242732] [2023-11-29 04:52:55,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:52:55,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:52:55,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:55,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:52:55,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:52:55,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-29 04:52:55,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 122 transitions, 495 flow. Second operand has 5 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 04:52:55,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:52:55,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-29 04:52:55,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:52:57,652 INFO L124 PetriNetUnfolderBase]: 13963/23613 cut-off events. [2023-11-29 04:52:57,653 INFO L125 PetriNetUnfolderBase]: For 2786/2786 co-relation queries the response was YES. [2023-11-29 04:52:57,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44410 conditions, 23613 events. 13963/23613 cut-off events. For 2786/2786 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 187496 event pairs, 8506 based on Foata normal form. 230/17454 useless extension candidates. Maximal degree in co-relation 44286. Up to 8889 conditions per place. [2023-11-29 04:52:57,801 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 139 selfloop transitions, 9 changer transitions 0/180 dead transitions. [2023-11-29 04:52:57,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 180 transitions, 990 flow [2023-11-29 04:52:57,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:52:57,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:52:57,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 285 transitions. [2023-11-29 04:52:57,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6263736263736264 [2023-11-29 04:52:57,803 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 285 transitions. [2023-11-29 04:52:57,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 285 transitions. [2023-11-29 04:52:57,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:52:57,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 285 transitions. [2023-11-29 04:52:57,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 57.0) internal successors, (285), 5 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 04:52:57,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 04:52:57,807 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 04:52:57,807 INFO L175 Difference]: Start difference. First operand has 94 places, 122 transitions, 495 flow. Second operand 5 states and 285 transitions. [2023-11-29 04:52:57,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 180 transitions, 990 flow [2023-11-29 04:52:57,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 180 transitions, 985 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:52:57,816 INFO L231 Difference]: Finished difference. Result has 99 places, 123 transitions, 526 flow [2023-11-29 04:52:57,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=526, PETRI_PLACES=99, PETRI_TRANSITIONS=123} [2023-11-29 04:52:57,817 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2023-11-29 04:52:57,818 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 123 transitions, 526 flow [2023-11-29 04:52:57,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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 04:52:57,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:52:57,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:57,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:52:57,819 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 04:52:57,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:57,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1998577639, now seen corresponding path program 1 times [2023-11-29 04:52:57,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:57,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271639275] [2023-11-29 04:52:57,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:57,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:57,889 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 04:52:57,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:57,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271639275] [2023-11-29 04:52:57,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271639275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:52:57,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:52:57,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:52:57,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44125539] [2023-11-29 04:52:57,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:52:57,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:52:57,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:57,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:52:57,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:52:57,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 91 [2023-11-29 04:52:57,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 123 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 04:52:57,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:52:57,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 91 [2023-11-29 04:52:57,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:53:00,868 INFO L124 PetriNetUnfolderBase]: 22842/33986 cut-off events. [2023-11-29 04:53:00,869 INFO L125 PetriNetUnfolderBase]: For 4098/4458 co-relation queries the response was YES. [2023-11-29 04:53:00,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68272 conditions, 33986 events. 22842/33986 cut-off events. For 4098/4458 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 225318 event pairs, 10962 based on Foata normal form. 464/26627 useless extension candidates. Maximal degree in co-relation 68144. Up to 21780 conditions per place. [2023-11-29 04:53:01,062 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 147 selfloop transitions, 4 changer transitions 0/183 dead transitions. [2023-11-29 04:53:01,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 183 transitions, 978 flow [2023-11-29 04:53:01,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:53:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:53:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-29 04:53:01,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005494505494505 [2023-11-29 04:53:01,064 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-29 04:53:01,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-29 04:53:01,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:53:01,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-29 04:53:01,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 04:53:01,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:01,067 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:01,067 INFO L175 Difference]: Start difference. First operand has 99 places, 123 transitions, 526 flow. Second operand 4 states and 255 transitions. [2023-11-29 04:53:01,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 183 transitions, 978 flow [2023-11-29 04:53:01,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 183 transitions, 975 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 04:53:01,074 INFO L231 Difference]: Finished difference. Result has 103 places, 126 transitions, 552 flow [2023-11-29 04:53:01,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=552, PETRI_PLACES=103, PETRI_TRANSITIONS=126} [2023-11-29 04:53:01,075 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 22 predicate places. [2023-11-29 04:53:01,076 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 126 transitions, 552 flow [2023-11-29 04:53:01,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 04:53:01,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:53:01,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:53:01,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:53:01,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 04:53:01,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:53:01,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1103350359, now seen corresponding path program 1 times [2023-11-29 04:53:01,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:53:01,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322273670] [2023-11-29 04:53:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:01,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:53:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:01,211 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 04:53:01,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:53:01,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322273670] [2023-11-29 04:53:01,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322273670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:53:01,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:53:01,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:53:01,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372860409] [2023-11-29 04:53:01,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:53:01,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:53:01,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:53:01,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:53:01,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:53:01,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-29 04:53:01,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 126 transitions, 552 flow. Second operand has 5 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 04:53:01,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:53:01,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-29 04:53:01,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:53:06,421 INFO L124 PetriNetUnfolderBase]: 40860/69080 cut-off events. [2023-11-29 04:53:06,421 INFO L125 PetriNetUnfolderBase]: For 18447/18519 co-relation queries the response was YES. [2023-11-29 04:53:06,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140194 conditions, 69080 events. 40860/69080 cut-off events. For 18447/18519 co-relation queries the response was YES. Maximal size of possible extension queue 2629. Compared 616100 event pairs, 24964 based on Foata normal form. 656/56069 useless extension candidates. Maximal degree in co-relation 139979. Up to 25425 conditions per place. [2023-11-29 04:53:06,848 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 159 selfloop transitions, 12 changer transitions 0/204 dead transitions. [2023-11-29 04:53:06,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 204 transitions, 1228 flow [2023-11-29 04:53:06,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:53:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:53:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 368 transitions. [2023-11-29 04:53:06,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777080062794349 [2023-11-29 04:53:06,851 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 368 transitions. [2023-11-29 04:53:06,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 368 transitions. [2023-11-29 04:53:06,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:53:06,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 368 transitions. [2023-11-29 04:53:06,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 52.57142857142857) internal successors, (368), 7 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 04:53:06,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 04:53:06,855 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 04:53:06,855 INFO L175 Difference]: Start difference. First operand has 103 places, 126 transitions, 552 flow. Second operand 7 states and 368 transitions. [2023-11-29 04:53:06,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 204 transitions, 1228 flow [2023-11-29 04:53:06,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 204 transitions, 1223 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:53:06,902 INFO L231 Difference]: Finished difference. Result has 113 places, 135 transitions, 671 flow [2023-11-29 04:53:06,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=671, PETRI_PLACES=113, PETRI_TRANSITIONS=135} [2023-11-29 04:53:06,903 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 32 predicate places. [2023-11-29 04:53:06,903 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 135 transitions, 671 flow [2023-11-29 04:53:06,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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 04:53:06,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:53:06,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:53:06,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:53:06,904 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 04:53:06,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:53:06,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1826332033, now seen corresponding path program 1 times [2023-11-29 04:53:06,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:53:06,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616623820] [2023-11-29 04:53:06,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:06,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:53:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:06,994 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 04:53:06,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:53:06,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616623820] [2023-11-29 04:53:06,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616623820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:53:06,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:53:06,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:53:06,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304221770] [2023-11-29 04:53:06,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:53:06,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:53:06,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:53:06,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:53:06,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:53:07,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-29 04:53:07,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 135 transitions, 671 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 04:53:07,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:53:07,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-29 04:53:07,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:53:18,387 INFO L124 PetriNetUnfolderBase]: 84892/141180 cut-off events. [2023-11-29 04:53:18,387 INFO L125 PetriNetUnfolderBase]: For 25243/25387 co-relation queries the response was YES. [2023-11-29 04:53:18,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281282 conditions, 141180 events. 84892/141180 cut-off events. For 25243/25387 co-relation queries the response was YES. Maximal size of possible extension queue 5014. Compared 1340408 event pairs, 52104 based on Foata normal form. 644/111548 useless extension candidates. Maximal degree in co-relation 281060. Up to 53568 conditions per place. [2023-11-29 04:53:19,358 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 125 selfloop transitions, 20 changer transitions 0/180 dead transitions. [2023-11-29 04:53:19,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 180 transitions, 1081 flow [2023-11-29 04:53:19,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:53:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:53:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 282 transitions. [2023-11-29 04:53:19,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197802197802198 [2023-11-29 04:53:19,360 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 282 transitions. [2023-11-29 04:53:19,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 282 transitions. [2023-11-29 04:53:19,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:53:19,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 282 transitions. [2023-11-29 04:53:19,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 04:53:19,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 04:53:19,363 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 04:53:19,363 INFO L175 Difference]: Start difference. First operand has 113 places, 135 transitions, 671 flow. Second operand 5 states and 282 transitions. [2023-11-29 04:53:19,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 180 transitions, 1081 flow [2023-11-29 04:53:19,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 180 transitions, 1079 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-29 04:53:19,494 INFO L231 Difference]: Finished difference. Result has 119 places, 136 transitions, 736 flow [2023-11-29 04:53:19,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=736, PETRI_PLACES=119, PETRI_TRANSITIONS=136} [2023-11-29 04:53:19,495 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 38 predicate places. [2023-11-29 04:53:19,495 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 136 transitions, 736 flow [2023-11-29 04:53:19,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 04:53:19,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:53:19,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:53:19,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:53:19,496 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 04:53:19,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:53:19,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1034019953, now seen corresponding path program 1 times [2023-11-29 04:53:19,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:53:19,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27759317] [2023-11-29 04:53:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:19,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:53:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:19,642 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 04:53:19,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:53:19,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27759317] [2023-11-29 04:53:19,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27759317] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:53:19,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532032879] [2023-11-29 04:53:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:19,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:53:19,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:53:19,649 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:53:19,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:53:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:19,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:53:19,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:53:19,835 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 04:53:19,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:53:19,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532032879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:53:19,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:53:19,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-29 04:53:19,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905318158] [2023-11-29 04:53:19,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:53:19,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:53:19,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:53:19,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:53:19,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:53:19,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2023-11-29 04:53:19,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 136 transitions, 736 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 04:53:19,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:53:19,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2023-11-29 04:53:19,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:53:30,407 INFO L124 PetriNetUnfolderBase]: 76856/130300 cut-off events. [2023-11-29 04:53:30,408 INFO L125 PetriNetUnfolderBase]: For 32311/32455 co-relation queries the response was YES. [2023-11-29 04:53:30,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260585 conditions, 130300 events. 76856/130300 cut-off events. For 32311/32455 co-relation queries the response was YES. Maximal size of possible extension queue 4507. Compared 1251228 event pairs, 47976 based on Foata normal form. 1496/105800 useless extension candidates. Maximal degree in co-relation 260355. Up to 95554 conditions per place. [2023-11-29 04:53:31,333 INFO L140 encePairwiseOnDemand]: 89/91 looper letters, 97 selfloop transitions, 1 changer transitions 0/134 dead transitions. [2023-11-29 04:53:31,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 134 transitions, 918 flow [2023-11-29 04:53:31,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:53:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:53:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2023-11-29 04:53:31,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6043956043956044 [2023-11-29 04:53:31,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2023-11-29 04:53:31,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2023-11-29 04:53:31,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:53:31,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2023-11-29 04:53:31,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 04:53:31,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 04:53:31,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 04:53:31,336 INFO L175 Difference]: Start difference. First operand has 119 places, 136 transitions, 736 flow. Second operand 3 states and 165 transitions. [2023-11-29 04:53:31,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 134 transitions, 918 flow [2023-11-29 04:53:31,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 134 transitions, 886 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 04:53:31,453 INFO L231 Difference]: Finished difference. Result has 115 places, 134 transitions, 692 flow [2023-11-29 04:53:31,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=115, PETRI_TRANSITIONS=134} [2023-11-29 04:53:31,454 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 34 predicate places. [2023-11-29 04:53:31,454 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 134 transitions, 692 flow [2023-11-29 04:53:31,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 04:53:31,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:53:31,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:53:31,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:53:31,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:53:31,655 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 04:53:31,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:53:31,655 INFO L85 PathProgramCache]: Analyzing trace with hash -10650625, now seen corresponding path program 1 times [2023-11-29 04:53:31,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:53:31,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437212636] [2023-11-29 04:53:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:31,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:53:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:31,713 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 04:53:31,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:53:31,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437212636] [2023-11-29 04:53:31,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437212636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:53:31,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:53:31,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:53:31,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684523218] [2023-11-29 04:53:31,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:53:31,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:53:31,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:53:31,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:53:31,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:53:31,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 91 [2023-11-29 04:53:31,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 134 transitions, 692 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 04:53:31,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:53:31,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 91 [2023-11-29 04:53:31,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:53:47,820 INFO L124 PetriNetUnfolderBase]: 134928/198980 cut-off events. [2023-11-29 04:53:47,820 INFO L125 PetriNetUnfolderBase]: For 44714/49658 co-relation queries the response was YES. [2023-11-29 04:53:48,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421137 conditions, 198980 events. 134928/198980 cut-off events. For 44714/49658 co-relation queries the response was YES. Maximal size of possible extension queue 5116. Compared 1579341 event pairs, 65256 based on Foata normal form. 2512/166504 useless extension candidates. Maximal degree in co-relation 421112. Up to 128883 conditions per place. [2023-11-29 04:53:49,403 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 161 selfloop transitions, 4 changer transitions 0/198 dead transitions. [2023-11-29 04:53:49,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 198 transitions, 1202 flow [2023-11-29 04:53:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:53:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:53:49,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-29 04:53:49,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005494505494505 [2023-11-29 04:53:49,405 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-29 04:53:49,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-29 04:53:49,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:53:49,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-29 04:53:49,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 04:53:49,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:49,408 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:49,408 INFO L175 Difference]: Start difference. First operand has 115 places, 134 transitions, 692 flow. Second operand 4 states and 255 transitions. [2023-11-29 04:53:49,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 198 transitions, 1202 flow [2023-11-29 04:53:49,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 198 transitions, 1201 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:53:49,637 INFO L231 Difference]: Finished difference. Result has 119 places, 137 transitions, 720 flow [2023-11-29 04:53:49,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=720, PETRI_PLACES=119, PETRI_TRANSITIONS=137} [2023-11-29 04:53:49,638 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 38 predicate places. [2023-11-29 04:53:49,638 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 137 transitions, 720 flow [2023-11-29 04:53:49,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 04:53:49,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:53:49,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:53:49,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:53:49,639 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 04:53:49,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:53:49,639 INFO L85 PathProgramCache]: Analyzing trace with hash -781717285, now seen corresponding path program 1 times [2023-11-29 04:53:49,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:53:49,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394431964] [2023-11-29 04:53:49,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:49,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:53:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:49,743 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 04:53:49,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:53:49,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394431964] [2023-11-29 04:53:49,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394431964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:53:49,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:53:49,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:53:49,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609002740] [2023-11-29 04:53:49,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:53:49,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:53:49,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:53:49,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:53:49,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:53:49,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-29 04:53:49,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 137 transitions, 720 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 04:53:49,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:53:49,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-29 04:53:49,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:05,851 INFO L124 PetriNetUnfolderBase]: 120886/194333 cut-off events. [2023-11-29 04:54:05,851 INFO L125 PetriNetUnfolderBase]: For 64991/65635 co-relation queries the response was YES. [2023-11-29 04:54:06,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426631 conditions, 194333 events. 120886/194333 cut-off events. For 64991/65635 co-relation queries the response was YES. Maximal size of possible extension queue 6094. Compared 1803152 event pairs, 74930 based on Foata normal form. 1304/169101 useless extension candidates. Maximal degree in co-relation 426604. Up to 75928 conditions per place. [2023-11-29 04:54:07,297 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 155 selfloop transitions, 10 changer transitions 0/199 dead transitions. [2023-11-29 04:54:07,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 199 transitions, 1291 flow [2023-11-29 04:54:07,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:54:07,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:54:07,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2023-11-29 04:54:07,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6813186813186813 [2023-11-29 04:54:07,299 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 248 transitions. [2023-11-29 04:54:07,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 248 transitions. [2023-11-29 04:54:07,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:07,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 248 transitions. [2023-11-29 04:54:07,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 04:54:07,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:07,302 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:07,302 INFO L175 Difference]: Start difference. First operand has 119 places, 137 transitions, 720 flow. Second operand 4 states and 248 transitions. [2023-11-29 04:54:07,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 199 transitions, 1291 flow [2023-11-29 04:54:09,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 199 transitions, 1286 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:54:09,646 INFO L231 Difference]: Finished difference. Result has 123 places, 138 transitions, 758 flow [2023-11-29 04:54:09,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=758, PETRI_PLACES=123, PETRI_TRANSITIONS=138} [2023-11-29 04:54:09,646 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 42 predicate places. [2023-11-29 04:54:09,646 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 138 transitions, 758 flow [2023-11-29 04:54:09,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 04:54:09,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:09,647 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:09,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:54:09,647 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 04:54:09,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:09,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1482958161, now seen corresponding path program 1 times [2023-11-29 04:54:09,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:09,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495141622] [2023-11-29 04:54:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:09,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:09,739 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 04:54:09,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:09,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495141622] [2023-11-29 04:54:09,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495141622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:09,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:09,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:54:09,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475214061] [2023-11-29 04:54:09,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:09,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:54:09,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:09,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:54:09,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:54:09,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2023-11-29 04:54:09,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 138 transitions, 758 flow. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 04:54:09,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:09,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2023-11-29 04:54:09,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:21,632 INFO L124 PetriNetUnfolderBase]: 90738/145592 cut-off events. [2023-11-29 04:54:21,632 INFO L125 PetriNetUnfolderBase]: For 39398/39998 co-relation queries the response was YES. [2023-11-29 04:54:22,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316714 conditions, 145592 events. 90738/145592 cut-off events. For 39398/39998 co-relation queries the response was YES. Maximal size of possible extension queue 4161. Compared 1289803 event pairs, 53736 based on Foata normal form. 0/128056 useless extension candidates. Maximal degree in co-relation 316686. Up to 74623 conditions per place. [2023-11-29 04:54:22,916 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 182 selfloop transitions, 14 changer transitions 0/232 dead transitions. [2023-11-29 04:54:22,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 232 transitions, 1513 flow [2023-11-29 04:54:22,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:54:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:54:22,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 357 transitions. [2023-11-29 04:54:22,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2023-11-29 04:54:22,918 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 357 transitions. [2023-11-29 04:54:22,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 357 transitions. [2023-11-29 04:54:22,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:22,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 357 transitions. [2023-11-29 04:54:22,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 04:54:22,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 04:54:22,921 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 04:54:22,921 INFO L175 Difference]: Start difference. First operand has 123 places, 138 transitions, 758 flow. Second operand 6 states and 357 transitions. [2023-11-29 04:54:22,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 232 transitions, 1513 flow [2023-11-29 04:54:24,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 232 transitions, 1504 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:54:24,121 INFO L231 Difference]: Finished difference. Result has 130 places, 142 transitions, 838 flow [2023-11-29 04:54:24,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=838, PETRI_PLACES=130, PETRI_TRANSITIONS=142} [2023-11-29 04:54:24,121 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 49 predicate places. [2023-11-29 04:54:24,121 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 142 transitions, 838 flow [2023-11-29 04:54:24,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 04:54:24,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:24,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:24,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:54:24,122 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 04:54:24,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:24,122 INFO L85 PathProgramCache]: Analyzing trace with hash -330136724, now seen corresponding path program 1 times [2023-11-29 04:54:24,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:24,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057247215] [2023-11-29 04:54:24,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:24,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:24,234 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 04:54:24,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:24,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057247215] [2023-11-29 04:54:24,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057247215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:24,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:24,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:54:24,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342194754] [2023-11-29 04:54:24,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:24,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:54:24,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:24,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:54:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:54:24,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-29 04:54:24,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 142 transitions, 838 flow. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 04:54:24,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:24,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-29 04:54:24,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:37,252 INFO L124 PetriNetUnfolderBase]: 93180/150040 cut-off events. [2023-11-29 04:54:37,253 INFO L125 PetriNetUnfolderBase]: For 49169/49517 co-relation queries the response was YES. [2023-11-29 04:54:37,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330004 conditions, 150040 events. 93180/150040 cut-off events. For 49169/49517 co-relation queries the response was YES. Maximal size of possible extension queue 4276. Compared 1339099 event pairs, 59324 based on Foata normal form. 1004/134368 useless extension candidates. Maximal degree in co-relation 329971. Up to 60324 conditions per place. [2023-11-29 04:54:38,460 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 135 selfloop transitions, 18 changer transitions 0/190 dead transitions. [2023-11-29 04:54:38,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 190 transitions, 1292 flow [2023-11-29 04:54:38,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:54:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:54:38,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 282 transitions. [2023-11-29 04:54:38,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197802197802198 [2023-11-29 04:54:38,462 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 282 transitions. [2023-11-29 04:54:38,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 282 transitions. [2023-11-29 04:54:38,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:38,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 282 transitions. [2023-11-29 04:54:38,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 04:54:38,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 04:54:38,465 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 04:54:38,465 INFO L175 Difference]: Start difference. First operand has 130 places, 142 transitions, 838 flow. Second operand 5 states and 282 transitions. [2023-11-29 04:54:38,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 190 transitions, 1292 flow [2023-11-29 04:54:39,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 190 transitions, 1283 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 04:54:39,202 INFO L231 Difference]: Finished difference. Result has 134 places, 143 transitions, 890 flow [2023-11-29 04:54:39,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=890, PETRI_PLACES=134, PETRI_TRANSITIONS=143} [2023-11-29 04:54:39,203 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 53 predicate places. [2023-11-29 04:54:39,203 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 143 transitions, 890 flow [2023-11-29 04:54:39,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 04:54:39,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:39,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:39,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 04:54:39,204 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 04:54:39,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:39,204 INFO L85 PathProgramCache]: Analyzing trace with hash -479773868, now seen corresponding path program 1 times [2023-11-29 04:54:39,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:39,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91353538] [2023-11-29 04:54:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:39,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:39,342 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 04:54:39,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:39,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91353538] [2023-11-29 04:54:39,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91353538] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:54:39,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872471686] [2023-11-29 04:54:39,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:39,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:54:39,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:54:39,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:54:39,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a30ce3-3888-4f95-a580-6559641e2ce8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:54:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:39,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:54:39,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:54:39,545 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 04:54:39,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:54:39,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872471686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:39,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:54:39,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-11-29 04:54:39,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794324115] [2023-11-29 04:54:39,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:39,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:54:39,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:39,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:54:39,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:54:39,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2023-11-29 04:54:39,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 143 transitions, 890 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 04:54:39,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:39,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2023-11-29 04:54:39,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand