./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:48:38,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:48:38,322 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:48:38,331 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:48:38,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:48:38,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:48:38,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:48:38,382 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:48:38,383 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:48:38,388 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:48:38,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:48:38,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:48:38,390 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:48:38,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:48:38,393 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:48:38,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:48:38,394 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:48:38,394 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:48:38,395 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:48:38,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:48:38,396 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:48:38,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:48:38,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:48:38,397 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:48:38,398 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:48:38,398 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:48:38,399 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:48:38,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:48:38,399 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:48:38,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:48:38,402 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:48:38,402 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:48:38,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:48:38,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:38,403 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:48:38,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:48:38,403 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:48:38,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:48:38,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:48:38,404 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:48:38,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:48:38,405 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:48:38,405 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:48:38,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:48:38,406 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_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2023-11-26 10:48:38,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:48:38,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:48:38,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:48:38,763 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:48:38,767 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:48:38,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2023-11-26 10:48:41,984 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:48:42,393 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:48:42,396 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2023-11-26 10:48:42,418 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/data/31126967c/2bcbeee2f907437ca194bf92b1fe9069/FLAG036843084 [2023-11-26 10:48:42,430 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/data/31126967c/2bcbeee2f907437ca194bf92b1fe9069 [2023-11-26 10:48:42,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:48:42,435 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:48:42,436 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:42,436 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:48:42,442 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:48:42,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:42" (1/1) ... [2023-11-26 10:48:42,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1d6ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:42, skipping insertion in model container [2023-11-26 10:48:42,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:42" (1/1) ... [2023-11-26 10:48:42,505 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:48:43,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:43,175 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:48:43,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:43,380 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:48:43,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:43 WrapperNode [2023-11-26 10:48:43,381 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:43,383 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:43,383 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:48:43,383 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:48:43,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:43" (1/1) ... [2023-11-26 10:48:43,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:43" (1/1) ... [2023-11-26 10:48:43,485 INFO L138 Inliner]: procedures = 272, calls = 48, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 313 [2023-11-26 10:48:43,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:43,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:48:43,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:48:43,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:48:43,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:43" (1/1) ... [2023-11-26 10:48:43,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:43" (1/1) ... [2023-11-26 10:48:43,508 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:43" (1/1) ... [2023-11-26 10:48:43,528 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 2, 5, 16]. 64 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 8 writes are split as follows [0, 1, 0, 7]. [2023-11-26 10:48:43,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:43" (1/1) ... [2023-11-26 10:48:43,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:43" (1/1) ... [2023-11-26 10:48:43,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:43" (1/1) ... [2023-11-26 10:48:43,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:43" (1/1) ... [2023-11-26 10:48:43,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:43" (1/1) ... [2023-11-26 10:48:43,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:43" (1/1) ... [2023-11-26 10:48:43,589 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:48:43,590 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:48:43,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:48:43,591 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:48:43,592 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:43" (1/1) ... [2023-11-26 10:48:43,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:43,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:43,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:48:43,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:48:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:48:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:48:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 10:48:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:48:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:48:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:48:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:48:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:48:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:48:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:48:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:48:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 10:48:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:48:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 10:48:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 10:48:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:48:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:48:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:48:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:48:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:48:43,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:48:43,728 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:48:43,946 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:48:43,949 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:48:44,544 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:48:44,791 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:48:44,791 INFO L309 CfgBuilder]: Removed 35 assume(true) statements. [2023-11-26 10:48:44,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:44 BoogieIcfgContainer [2023-11-26 10:48:44,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:48:44,795 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:48:44,795 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:48:44,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:48:44,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:48:42" (1/3) ... [2023-11-26 10:48:44,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489c61d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:44, skipping insertion in model container [2023-11-26 10:48:44,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:43" (2/3) ... [2023-11-26 10:48:44,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489c61d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:44, skipping insertion in model container [2023-11-26 10:48:44,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:44" (3/3) ... [2023-11-26 10:48:44,802 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2023-11-26 10:48:44,812 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:48:44,825 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:48:44,825 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-26 10:48:44,825 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:48:44,924 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 10:48:44,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 163 transitions, 333 flow [2023-11-26 10:48:45,100 INFO L124 PetriNetUnfolderBase]: 60/256 cut-off events. [2023-11-26 10:48:45,100 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 10:48:45,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 256 events. 60/256 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1275 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 148. Up to 8 conditions per place. [2023-11-26 10:48:45,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 163 transitions, 333 flow [2023-11-26 10:48:45,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 162 transitions, 331 flow [2023-11-26 10:48:45,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:48:45,141 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;@48e30cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:48:45,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-26 10:48:45,144 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:48:45,144 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 10:48:45,145 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:48:45,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:45,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 10:48:45,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-26 10:48:45,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:45,151 INFO L85 PathProgramCache]: Analyzing trace with hash 824619, now seen corresponding path program 1 times [2023-11-26 10:48:45,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:45,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603459981] [2023-11-26 10:48:45,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:45,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:45,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:45,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603459981] [2023-11-26 10:48:45,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603459981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:45,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:45,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:45,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61836914] [2023-11-26 10:48:45,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:45,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:45,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:45,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:45,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:45,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2023-11-26 10:48:45,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 162 transitions, 331 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:45,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:45,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2023-11-26 10:48:45,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:46,300 INFO L124 PetriNetUnfolderBase]: 942/2936 cut-off events. [2023-11-26 10:48:46,301 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 10:48:46,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4718 conditions, 2936 events. 942/2936 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23891 event pairs, 780 based on Foata normal form. 518/3030 useless extension candidates. Maximal degree in co-relation 4579. Up to 1773 conditions per place. [2023-11-26 10:48:46,362 INFO L140 encePairwiseOnDemand]: 128/163 looper letters, 65 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2023-11-26 10:48:46,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 131 transitions, 407 flow [2023-11-26 10:48:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:46,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:48:46,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2023-11-26 10:48:46,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5337423312883436 [2023-11-26 10:48:46,390 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 348 transitions. [2023-11-26 10:48:46,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 348 transitions. [2023-11-26 10:48:46,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:46,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 348 transitions. [2023-11-26 10:48:46,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:46,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:46,412 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:46,415 INFO L175 Difference]: Start difference. First operand has 129 places, 162 transitions, 331 flow. Second operand 4 states and 348 transitions. [2023-11-26 10:48:46,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 131 transitions, 407 flow [2023-11-26 10:48:46,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 131 transitions, 407 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:48:46,429 INFO L231 Difference]: Finished difference. Result has 131 places, 131 transitions, 277 flow [2023-11-26 10:48:46,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=131, PETRI_TRANSITIONS=131} [2023-11-26 10:48:46,437 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, 2 predicate places. [2023-11-26 10:48:46,438 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 131 transitions, 277 flow [2023-11-26 10:48:46,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:46,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:46,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 10:48:46,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:48:46,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-26 10:48:46,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:46,440 INFO L85 PathProgramCache]: Analyzing trace with hash 25564091, now seen corresponding path program 1 times [2023-11-26 10:48:46,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:46,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976396065] [2023-11-26 10:48:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:46,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:46,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:46,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976396065] [2023-11-26 10:48:46,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976396065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:46,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:46,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:46,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197033603] [2023-11-26 10:48:46,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:46,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:46,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:46,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:46,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:46,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2023-11-26 10:48:46,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 131 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:46,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:46,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2023-11-26 10:48:46,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:47,164 INFO L124 PetriNetUnfolderBase]: 942/2939 cut-off events. [2023-11-26 10:48:47,164 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 10:48:47,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4730 conditions, 2939 events. 942/2939 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23904 event pairs, 780 based on Foata normal form. 1/2517 useless extension candidates. Maximal degree in co-relation 4704. Up to 1777 conditions per place. [2023-11-26 10:48:47,190 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 68 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2023-11-26 10:48:47,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 133 transitions, 427 flow [2023-11-26 10:48:47,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:47,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:48:47,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-11-26 10:48:47,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49233128834355827 [2023-11-26 10:48:47,195 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-11-26 10:48:47,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-11-26 10:48:47,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:47,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-11-26 10:48:47,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:47,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:47,208 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:47,208 INFO L175 Difference]: Start difference. First operand has 131 places, 131 transitions, 277 flow. Second operand 4 states and 321 transitions. [2023-11-26 10:48:47,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 133 transitions, 427 flow [2023-11-26 10:48:47,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 133 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:48:47,217 INFO L231 Difference]: Finished difference. Result has 133 places, 133 transitions, 291 flow [2023-11-26 10:48:47,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=133, PETRI_TRANSITIONS=133} [2023-11-26 10:48:47,219 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, 4 predicate places. [2023-11-26 10:48:47,221 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 133 transitions, 291 flow [2023-11-26 10:48:47,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:47,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:47,228 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 10:48:47,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:48:47,228 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-26 10:48:47,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:47,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1371461150, now seen corresponding path program 1 times [2023-11-26 10:48:47,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:47,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381256138] [2023-11-26 10:48:47,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:47,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:48:47,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:47,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381256138] [2023-11-26 10:48:47,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381256138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:47,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:47,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:47,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760205760] [2023-11-26 10:48:47,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:47,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:47,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:47,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:47,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:47,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2023-11-26 10:48:47,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 133 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:47,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:47,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2023-11-26 10:48:47,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:47,896 INFO L124 PetriNetUnfolderBase]: 942/2938 cut-off events. [2023-11-26 10:48:47,896 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 10:48:47,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 2938 events. 942/2938 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23887 event pairs, 780 based on Foata normal form. 0/2515 useless extension candidates. Maximal degree in co-relation 4714. Up to 1776 conditions per place. [2023-11-26 10:48:47,925 INFO L140 encePairwiseOnDemand]: 160/163 looper letters, 66 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2023-11-26 10:48:47,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 132 transitions, 427 flow [2023-11-26 10:48:47,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:47,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:48:47,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2023-11-26 10:48:47,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214723926380368 [2023-11-26 10:48:47,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2023-11-26 10:48:47,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2023-11-26 10:48:47,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:47,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2023-11-26 10:48:47,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.0) internal successors, (255), 3 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) [2023-11-26 10:48:47,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:47,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:47,936 INFO L175 Difference]: Start difference. First operand has 133 places, 133 transitions, 291 flow. Second operand 3 states and 255 transitions. [2023-11-26 10:48:47,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 132 transitions, 427 flow [2023-11-26 10:48:47,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 132 transitions, 425 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:48:47,947 INFO L231 Difference]: Finished difference. Result has 133 places, 132 transitions, 293 flow [2023-11-26 10:48:47,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=133, PETRI_TRANSITIONS=132} [2023-11-26 10:48:47,950 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, 4 predicate places. [2023-11-26 10:48:47,950 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 132 transitions, 293 flow [2023-11-26 10:48:47,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:47,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:47,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:47,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:48:47,958 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-26 10:48:47,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:47,960 INFO L85 PathProgramCache]: Analyzing trace with hash -577601767, now seen corresponding path program 1 times [2023-11-26 10:48:47,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:47,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671557043] [2023-11-26 10:48:47,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:47,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:48,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:48:48,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:48,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671557043] [2023-11-26 10:48:48,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671557043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:48,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:48,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:48:48,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328337791] [2023-11-26 10:48:48,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:48,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:48,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:48,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:48,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:48,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2023-11-26 10:48:48,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 132 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:48,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:48,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2023-11-26 10:48:48,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:48,776 INFO L124 PetriNetUnfolderBase]: 885/2491 cut-off events. [2023-11-26 10:48:48,777 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 10:48:48,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4201 conditions, 2491 events. 885/2491 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 19374 event pairs, 0 based on Foata normal form. 21/2218 useless extension candidates. Maximal degree in co-relation 4178. Up to 1625 conditions per place. [2023-11-26 10:48:48,797 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 110 selfloop transitions, 3 changer transitions 0/173 dead transitions. [2023-11-26 10:48:48,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 173 transitions, 601 flow [2023-11-26 10:48:48,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:48,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:48:48,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2023-11-26 10:48:48,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5552147239263804 [2023-11-26 10:48:48,800 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 362 transitions. [2023-11-26 10:48:48,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 362 transitions. [2023-11-26 10:48:48,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:48,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 362 transitions. [2023-11-26 10:48:48,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:48,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:48,804 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:48,805 INFO L175 Difference]: Start difference. First operand has 133 places, 132 transitions, 293 flow. Second operand 4 states and 362 transitions. [2023-11-26 10:48:48,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 173 transitions, 601 flow [2023-11-26 10:48:48,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 173 transitions, 593 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:48:48,813 INFO L231 Difference]: Finished difference. Result has 133 places, 130 transitions, 291 flow [2023-11-26 10:48:48,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=133, PETRI_TRANSITIONS=130} [2023-11-26 10:48:48,815 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, 4 predicate places. [2023-11-26 10:48:48,816 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 130 transitions, 291 flow [2023-11-26 10:48:48,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:48,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:48,816 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:48,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:48:48,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-26 10:48:48,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:48,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1694442820, now seen corresponding path program 1 times [2023-11-26 10:48:48,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:48,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757056554] [2023-11-26 10:48:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:48,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:48:48,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:48,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757056554] [2023-11-26 10:48:48,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757056554] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:48,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153176643] [2023-11-26 10:48:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:48,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:48,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:48,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:48,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:48:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:49,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:48:49,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:48:49,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:48:49,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153176643] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:49,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:49,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-26 10:48:49,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707734168] [2023-11-26 10:48:49,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:49,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:48:49,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:48:49,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:48:49,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2023-11-26 10:48:49,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 130 transitions, 291 flow. Second operand has 8 states, 8 states have (on average 63.5) internal successors, (508), 8 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:49,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:49,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2023-11-26 10:48:49,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:49,863 INFO L124 PetriNetUnfolderBase]: 930/2848 cut-off events. [2023-11-26 10:48:49,864 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-26 10:48:49,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4688 conditions, 2848 events. 930/2848 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 22876 event pairs, 780 based on Foata normal form. 2/2478 useless extension candidates. Maximal degree in co-relation 4656. Up to 1729 conditions per place. [2023-11-26 10:48:49,890 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 66 selfloop transitions, 7 changer transitions 0/133 dead transitions. [2023-11-26 10:48:49,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 133 transitions, 449 flow [2023-11-26 10:48:49,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:48:49,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:48:49,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 509 transitions. [2023-11-26 10:48:49,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44609991235758106 [2023-11-26 10:48:49,893 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 509 transitions. [2023-11-26 10:48:49,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 509 transitions. [2023-11-26 10:48:49,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:49,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 509 transitions. [2023-11-26 10:48:49,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:49,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:49,900 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:49,900 INFO L175 Difference]: Start difference. First operand has 133 places, 130 transitions, 291 flow. Second operand 7 states and 509 transitions. [2023-11-26 10:48:49,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 133 transitions, 449 flow [2023-11-26 10:48:49,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 133 transitions, 443 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:48:49,906 INFO L231 Difference]: Finished difference. Result has 138 places, 133 transitions, 322 flow [2023-11-26 10:48:49,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=322, PETRI_PLACES=138, PETRI_TRANSITIONS=133} [2023-11-26 10:48:49,907 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, 9 predicate places. [2023-11-26 10:48:49,907 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 133 transitions, 322 flow [2023-11-26 10:48:49,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 63.5) internal successors, (508), 8 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:49,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:49,908 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:49,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 10:48:50,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:50,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-26 10:48:50,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:50,116 INFO L85 PathProgramCache]: Analyzing trace with hash -610567204, now seen corresponding path program 2 times [2023-11-26 10:48:50,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:50,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993466956] [2023-11-26 10:48:50,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:50,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:48:50,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:50,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993466956] [2023-11-26 10:48:50,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993466956] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:50,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444983801] [2023-11-26 10:48:50,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:48:50,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:50,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:50,376 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:50,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:48:50,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:48:50,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:50,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:48:50,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:48:50,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:48:50,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444983801] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:50,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:50,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-26 10:48:50,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317048740] [2023-11-26 10:48:50,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:50,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 10:48:50,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:50,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 10:48:50,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:48:50,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2023-11-26 10:48:50,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 133 transitions, 322 flow. Second operand has 16 states, 16 states have (on average 63.25) internal successors, (1012), 16 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:50,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:50,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2023-11-26 10:48:50,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:51,378 INFO L124 PetriNetUnfolderBase]: 930/2860 cut-off events. [2023-11-26 10:48:51,378 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-26 10:48:51,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4699 conditions, 2860 events. 930/2860 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 22873 event pairs, 780 based on Foata normal form. 4/2492 useless extension candidates. Maximal degree in co-relation 4616. Up to 1729 conditions per place. [2023-11-26 10:48:51,404 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 66 selfloop transitions, 15 changer transitions 0/141 dead transitions. [2023-11-26 10:48:51,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 141 transitions, 540 flow [2023-11-26 10:48:51,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:48:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:48:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1015 transitions. [2023-11-26 10:48:51,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41513292433537835 [2023-11-26 10:48:51,410 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1015 transitions. [2023-11-26 10:48:51,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1015 transitions. [2023-11-26 10:48:51,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:51,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1015 transitions. [2023-11-26 10:48:51,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 67.66666666666667) internal successors, (1015), 15 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 163.0) internal successors, (2608), 16 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,424 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 163.0) internal successors, (2608), 16 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,424 INFO L175 Difference]: Start difference. First operand has 138 places, 133 transitions, 322 flow. Second operand 15 states and 1015 transitions. [2023-11-26 10:48:51,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 141 transitions, 540 flow [2023-11-26 10:48:51,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 141 transitions, 518 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-26 10:48:51,432 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 405 flow [2023-11-26 10:48:51,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=405, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2023-11-26 10:48:51,436 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, 24 predicate places. [2023-11-26 10:48:51,436 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 405 flow [2023-11-26 10:48:51,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 63.25) internal successors, (1012), 16 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:51,438 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:51,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:51,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 10:48:51,644 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-26 10:48:51,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:51,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1982679524, now seen corresponding path program 3 times [2023-11-26 10:48:51,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:51,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011216881] [2023-11-26 10:48:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:51,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:48:51,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:51,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011216881] [2023-11-26 10:48:51,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011216881] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:51,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090009395] [2023-11-26 10:48:51,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 10:48:51,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:51,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:51,994 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:52,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:48:52,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-26 10:48:52,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:52,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 10:48:52,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:48:52,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:48:52,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090009395] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:52,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:52,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2023-11-26 10:48:52,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299942325] [2023-11-26 10:48:52,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:52,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-26 10:48:52,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:52,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-26 10:48:52,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-11-26 10:48:52,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2023-11-26 10:48:52,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 405 flow. Second operand has 21 states, 21 states have (on average 63.23809523809524) internal successors, (1328), 21 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:52,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2023-11-26 10:48:52,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:53,318 INFO L124 PetriNetUnfolderBase]: 930/2869 cut-off events. [2023-11-26 10:48:53,318 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-11-26 10:48:53,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4752 conditions, 2869 events. 930/2869 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 22840 event pairs, 780 based on Foata normal form. 3/2500 useless extension candidates. Maximal degree in co-relation 4616. Up to 1729 conditions per place. [2023-11-26 10:48:53,350 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 66 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2023-11-26 10:48:53,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 147 transitions, 633 flow [2023-11-26 10:48:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 10:48:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 10:48:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1392 transitions. [2023-11-26 10:48:53,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.406660823838738 [2023-11-26 10:48:53,363 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1392 transitions. [2023-11-26 10:48:53,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1392 transitions. [2023-11-26 10:48:53,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:53,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1392 transitions. [2023-11-26 10:48:53,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 66.28571428571429) internal successors, (1392), 21 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:53,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:53,383 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:53,383 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 405 flow. Second operand 21 states and 1392 transitions. [2023-11-26 10:48:53,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 147 transitions, 633 flow [2023-11-26 10:48:53,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 147 transitions, 615 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-26 10:48:53,393 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 498 flow [2023-11-26 10:48:53,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=498, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2023-11-26 10:48:53,394 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, 43 predicate places. [2023-11-26 10:48:53,394 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 498 flow [2023-11-26 10:48:53,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 63.23809523809524) internal successors, (1328), 21 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:53,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:53,396 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:53,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:53,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00120eb7-9f3b-46f8-b72e-8f6d6971b858/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 10:48:53,604 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-26 10:48:53,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:53,604 INFO L85 PathProgramCache]: Analyzing trace with hash 198296991, now seen corresponding path program 4 times [2023-11-26 10:48:53,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:53,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122283880] [2023-11-26 10:48:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:53,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:48:53,652 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:48:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:48:53,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:48:53,708 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:48:53,710 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-11-26 10:48:53,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-11-26 10:48:53,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-11-26 10:48:53,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-11-26 10:48:53,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-11-26 10:48:53,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-11-26 10:48:53,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-11-26 10:48:53,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-11-26 10:48:53,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-11-26 10:48:53,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-11-26 10:48:53,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-11-26 10:48:53,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-11-26 10:48:53,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-11-26 10:48:53,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-11-26 10:48:53,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-11-26 10:48:53,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-11-26 10:48:53,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-11-26 10:48:53,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-11-26 10:48:53,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-11-26 10:48:53,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-11-26 10:48:53,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-11-26 10:48:53,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-11-26 10:48:53,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-11-26 10:48:53,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-11-26 10:48:53,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-11-26 10:48:53,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-11-26 10:48:53,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-11-26 10:48:53,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-11-26 10:48:53,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-11-26 10:48:53,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:48:53,720 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2023-11-26 10:48:53,723 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:48:53,724 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 10:48:53,783 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 10:48:53,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 215 transitions, 446 flow [2023-11-26 10:48:53,879 INFO L124 PetriNetUnfolderBase]: 97/420 cut-off events. [2023-11-26 10:48:53,879 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 10:48:53,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 420 events. 97/420 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2386 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 258. Up to 12 conditions per place. [2023-11-26 10:48:53,884 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 215 transitions, 446 flow [2023-11-26 10:48:53,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 215 transitions, 446 flow [2023-11-26 10:48:53,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:48:53,894 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;@48e30cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:48:53,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-26 10:48:53,897 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:48:53,897 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 10:48:53,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:48:53,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:53,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 10:48:53,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-26 10:48:53,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:53,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1038114, now seen corresponding path program 1 times [2023-11-26 10:48:53,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:53,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973385687] [2023-11-26 10:48:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:53,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:53,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:53,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973385687] [2023-11-26 10:48:53,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973385687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:53,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:53,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:53,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924429688] [2023-11-26 10:48:53,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:53,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:53,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:53,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:53,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:53,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 215 [2023-11-26 10:48:53,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 215 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:53,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:53,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 215 [2023-11-26 10:48:53,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:03,593 INFO L124 PetriNetUnfolderBase]: 39420/85212 cut-off events. [2023-11-26 10:49:03,594 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2023-11-26 10:49:03,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142525 conditions, 85212 events. 39420/85212 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 2481. Compared 982003 event pairs, 34102 based on Foata normal form. 16895/90200 useless extension candidates. Maximal degree in co-relation 106157. Up to 57197 conditions per place. [2023-11-26 10:49:04,473 INFO L140 encePairwiseOnDemand]: 170/215 looper letters, 89 selfloop transitions, 4 changer transitions 0/174 dead transitions. [2023-11-26 10:49:04,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 174 transitions, 550 flow [2023-11-26 10:49:04,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:49:04,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:49:04,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2023-11-26 10:49:04,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5325581395348837 [2023-11-26 10:49:04,478 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 458 transitions. [2023-11-26 10:49:04,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 458 transitions. [2023-11-26 10:49:04,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:04,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 458 transitions. [2023-11-26 10:49:04,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:04,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:04,484 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:04,484 INFO L175 Difference]: Start difference. First operand has 170 places, 215 transitions, 446 flow. Second operand 4 states and 458 transitions. [2023-11-26 10:49:04,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 174 transitions, 550 flow [2023-11-26 10:49:04,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 174 transitions, 550 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:49:04,491 INFO L231 Difference]: Finished difference. Result has 172 places, 174 transitions, 372 flow [2023-11-26 10:49:04,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=172, PETRI_TRANSITIONS=174} [2023-11-26 10:49:04,495 INFO L281 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2023-11-26 10:49:04,495 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 174 transitions, 372 flow [2023-11-26 10:49:04,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:04,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:04,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 10:49:04,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:49:04,496 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-26 10:49:04,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:04,497 INFO L85 PathProgramCache]: Analyzing trace with hash 32182651, now seen corresponding path program 1 times [2023-11-26 10:49:04,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:04,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844812834] [2023-11-26 10:49:04,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:04,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:04,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:04,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844812834] [2023-11-26 10:49:04,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844812834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:04,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:04,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:04,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745756337] [2023-11-26 10:49:04,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:04,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:49:04,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:04,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:49:04,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:49:04,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 215 [2023-11-26 10:49:04,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 174 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:04,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:04,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 215 [2023-11-26 10:49:04,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:12,737 INFO L124 PetriNetUnfolderBase]: 39420/85215 cut-off events. [2023-11-26 10:49:12,738 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2023-11-26 10:49:12,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142537 conditions, 85215 events. 39420/85215 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 2481. Compared 982034 event pairs, 34102 based on Foata normal form. 1/73310 useless extension candidates. Maximal degree in co-relation 142510. Up to 57201 conditions per place. [2023-11-26 10:49:13,522 INFO L140 encePairwiseOnDemand]: 210/215 looper letters, 92 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2023-11-26 10:49:13,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 176 transitions, 570 flow [2023-11-26 10:49:13,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:49:13,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:49:13,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 421 transitions. [2023-11-26 10:49:13,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48953488372093024 [2023-11-26 10:49:13,526 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 421 transitions. [2023-11-26 10:49:13,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 421 transitions. [2023-11-26 10:49:13,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:13,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 421 transitions. [2023-11-26 10:49:13,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:13,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:13,531 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:13,531 INFO L175 Difference]: Start difference. First operand has 172 places, 174 transitions, 372 flow. Second operand 4 states and 421 transitions. [2023-11-26 10:49:13,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 176 transitions, 570 flow [2023-11-26 10:49:13,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 176 transitions, 558 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:49:13,541 INFO L231 Difference]: Finished difference. Result has 174 places, 176 transitions, 386 flow [2023-11-26 10:49:13,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=174, PETRI_TRANSITIONS=176} [2023-11-26 10:49:13,543 INFO L281 CegarLoopForPetriNet]: 170 programPoint places, 4 predicate places. [2023-11-26 10:49:13,544 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 176 transitions, 386 flow [2023-11-26 10:49:13,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:13,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:13,544 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 10:49:13,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:49:13,545 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-26 10:49:13,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:13,545 INFO L85 PathProgramCache]: Analyzing trace with hash 976699989, now seen corresponding path program 1 times [2023-11-26 10:49:13,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:13,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493329215] [2023-11-26 10:49:13,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:13,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:13,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:49:13,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:13,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493329215] [2023-11-26 10:49:13,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493329215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:13,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:13,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:13,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57824616] [2023-11-26 10:49:13,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:13,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:13,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:13,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:13,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:13,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 215 [2023-11-26 10:49:13,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 176 transitions, 386 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 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) [2023-11-26 10:49:13,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:13,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 215 [2023-11-26 10:49:13,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:21,180 INFO L124 PetriNetUnfolderBase]: 39420/85214 cut-off events. [2023-11-26 10:49:21,180 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2023-11-26 10:49:21,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142539 conditions, 85214 events. 39420/85214 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 2481. Compared 981874 event pairs, 34102 based on Foata normal form. 0/73308 useless extension candidates. Maximal degree in co-relation 142520. Up to 57200 conditions per place. [2023-11-26 10:49:21,748 INFO L140 encePairwiseOnDemand]: 212/215 looper letters, 90 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2023-11-26 10:49:21,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 175 transitions, 570 flow [2023-11-26 10:49:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:21,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:49:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2023-11-26 10:49:21,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209302325581395 [2023-11-26 10:49:21,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2023-11-26 10:49:21,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2023-11-26 10:49:21,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:21,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2023-11-26 10:49:21,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:21,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:21,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:21,757 INFO L175 Difference]: Start difference. First operand has 174 places, 176 transitions, 386 flow. Second operand 3 states and 336 transitions. [2023-11-26 10:49:21,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 175 transitions, 570 flow [2023-11-26 10:49:21,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 175 transitions, 568 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:49:21,764 INFO L231 Difference]: Finished difference. Result has 174 places, 175 transitions, 388 flow [2023-11-26 10:49:21,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=174, PETRI_TRANSITIONS=175} [2023-11-26 10:49:21,765 INFO L281 CegarLoopForPetriNet]: 170 programPoint places, 4 predicate places. [2023-11-26 10:49:21,766 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 175 transitions, 388 flow [2023-11-26 10:49:21,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 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) [2023-11-26 10:49:21,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:21,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:21,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:49:21,767 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-26 10:49:21,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:21,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1985900510, now seen corresponding path program 1 times [2023-11-26 10:49:21,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:21,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19861262] [2023-11-26 10:49:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:21,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:49:21,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:21,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19861262] [2023-11-26 10:49:21,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19861262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:21,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:21,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:21,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885189968] [2023-11-26 10:49:21,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:21,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:49:21,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:21,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:49:21,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:49:21,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 215 [2023-11-26 10:49:21,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 175 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:21,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:21,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 215 [2023-11-26 10:49:21,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand