./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX --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 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:23:03,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:23:03,180 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 19:23:03,186 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:23:03,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:23:03,218 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:23:03,218 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:23:03,219 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:23:03,220 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:23:03,220 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:23:03,221 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:23:03,222 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:23:03,223 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:23:03,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:23:03,224 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:23:03,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:23:03,225 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:23:03,225 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:23:03,226 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:23:03,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:23:03,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:23:03,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:23:03,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:23:03,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:23:03,229 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:23:03,230 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 19:23:03,231 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 19:23:03,231 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:23:03,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:23:03,232 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:23:03,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:23:03,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:23:03,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:23:03,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:23:03,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:23:03,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:23:03,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:23:03,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:23:03,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:23:03,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:23:03,241 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:23:03,242 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:23:03,242 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:23:03,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:23:03,243 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_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 [2024-11-08 19:23:03,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:23:03,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:23:03,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:23:03,619 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:23:03,619 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:23:03,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c Unable to find full path for "g++" [2024-11-08 19:23:06,094 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:23:06,339 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:23:06,340 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-11-08 19:23:06,357 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/data/e4c143ef2/f0cf832da78d40479f04f62e3f41463c/FLAGba06eec04 [2024-11-08 19:23:06,686 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/data/e4c143ef2/f0cf832da78d40479f04f62e3f41463c [2024-11-08 19:23:06,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:23:06,693 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:23:06,694 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:23:06,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:23:06,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:23:06,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:23:06" (1/1) ... [2024-11-08 19:23:06,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d193c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:06, skipping insertion in model container [2024-11-08 19:23:06,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:23:06" (1/1) ... [2024-11-08 19:23:06,754 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:23:07,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:23:07,060 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:23:07,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:23:07,140 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:23:07,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:07 WrapperNode [2024-11-08 19:23:07,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:23:07,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:23:07,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:23:07,144 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:23:07,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:07" (1/1) ... [2024-11-08 19:23:07,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:07" (1/1) ... [2024-11-08 19:23:07,217 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 355 [2024-11-08 19:23:07,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:23:07,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:23:07,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:23:07,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:23:07,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:07" (1/1) ... [2024-11-08 19:23:07,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:07" (1/1) ... [2024-11-08 19:23:07,240 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:07" (1/1) ... [2024-11-08 19:23:07,264 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-08 19:23:07,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:07" (1/1) ... [2024-11-08 19:23:07,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:07" (1/1) ... [2024-11-08 19:23:07,289 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:07" (1/1) ... [2024-11-08 19:23:07,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:07" (1/1) ... [2024-11-08 19:23:07,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:07" (1/1) ... [2024-11-08 19:23:07,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:07" (1/1) ... [2024-11-08 19:23:07,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:23:07,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:23:07,316 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:23:07,316 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:23:07,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:07" (1/1) ... [2024-11-08 19:23:07,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:23:07,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:23:07,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:23:07,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:23:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:23:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 19:23:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 19:23:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 19:23:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 19:23:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 19:23:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 19:23:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:23:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 19:23:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 19:23:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 19:23:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 19:23:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 19:23:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 19:23:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:23:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:23:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 19:23:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 19:23:07,399 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 19:23:07,543 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:23:07,546 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:23:08,636 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 19:23:08,636 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:23:09,962 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:23:09,963 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 19:23:09,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:23:09 BoogieIcfgContainer [2024-11-08 19:23:09,965 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:23:09,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:23:09,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:23:09,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:23:09,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:23:06" (1/3) ... [2024-11-08 19:23:09,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db8d0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:23:09, skipping insertion in model container [2024-11-08 19:23:09,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:23:07" (2/3) ... [2024-11-08 19:23:09,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db8d0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:23:09, skipping insertion in model container [2024-11-08 19:23:09,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:23:09" (3/3) ... [2024-11-08 19:23:09,979 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2024-11-08 19:23:10,010 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:23:10,011 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2024-11-08 19:23:10,011 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 19:23:10,430 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 19:23:10,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 104 transitions, 229 flow [2024-11-08 19:23:10,610 INFO L124 PetriNetUnfolderBase]: 10/101 cut-off events. [2024-11-08 19:23:10,610 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 19:23:10,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 10/101 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 402 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2024-11-08 19:23:10,619 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 104 transitions, 229 flow [2024-11-08 19:23:10,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 99 transitions, 213 flow [2024-11-08 19:23:10,648 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:23:10,661 INFO L333 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, 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;@205e3c4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:23:10,662 INFO L334 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2024-11-08 19:23:10,667 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:23:10,668 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-11-08 19:23:10,668 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:23:10,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:23:10,670 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 19:23:10,670 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-08 19:23:10,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:23:10,679 INFO L85 PathProgramCache]: Analyzing trace with hash 42095053, now seen corresponding path program 1 times [2024-11-08 19:23:10,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:23:10,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197740093] [2024-11-08 19:23:10,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:10,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:23:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:23:11,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:23:11,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197740093] [2024-11-08 19:23:11,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197740093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:23:11,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:23:11,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:23:11,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834554540] [2024-11-08 19:23:11,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:23:11,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:23:11,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:23:11,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:23:11,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:23:11,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 104 [2024-11-08 19:23:11,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:11,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:23:11,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 104 [2024-11-08 19:23:11,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:23:15,020 INFO L124 PetriNetUnfolderBase]: 5751/8890 cut-off events. [2024-11-08 19:23:15,021 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-08 19:23:15,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17205 conditions, 8890 events. 5751/8890 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 1225. Compared 69303 event pairs, 4968 based on Foata normal form. 2/4195 useless extension candidates. Maximal degree in co-relation 16396. Up to 7974 conditions per place. [2024-11-08 19:23:15,132 INFO L140 encePairwiseOnDemand]: 75/104 looper letters, 48 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2024-11-08 19:23:15,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 299 flow [2024-11-08 19:23:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:23:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 19:23:15,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-08 19:23:15,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5216346153846154 [2024-11-08 19:23:15,156 INFO L175 Difference]: Start difference. First operand has 99 places, 99 transitions, 213 flow. Second operand 4 states and 217 transitions. [2024-11-08 19:23:15,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 87 transitions, 299 flow [2024-11-08 19:23:15,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 290 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 19:23:15,176 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 228 flow [2024-11-08 19:23:15,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-11-08 19:23:15,188 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -17 predicate places. [2024-11-08 19:23:15,188 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 228 flow [2024-11-08 19:23:15,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:15,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:23:15,190 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 19:23:15,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:23:15,191 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-08 19:23:15,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:23:15,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1958749107, now seen corresponding path program 1 times [2024-11-08 19:23:15,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:23:15,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704641249] [2024-11-08 19:23:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:15,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:23:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:23:15,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:23:15,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704641249] [2024-11-08 19:23:15,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704641249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:23:15,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275742682] [2024-11-08 19:23:15,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:15,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:23:15,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:23:15,512 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:23:15,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:23:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:15,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:23:15,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:23:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:23:15,946 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:23:15,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275742682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:23:15,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:23:15,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 19:23:15,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728546943] [2024-11-08 19:23:15,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:23:15,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:23:15,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:23:15,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:23:15,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:23:16,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 104 [2024-11-08 19:23:16,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:16,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:23:16,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 104 [2024-11-08 19:23:16,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:23:18,901 INFO L124 PetriNetUnfolderBase]: 5751/8888 cut-off events. [2024-11-08 19:23:18,901 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-08 19:23:18,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17102 conditions, 8888 events. 5751/8888 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 1225. Compared 69336 event pairs, 4968 based on Foata normal form. 2/4193 useless extension candidates. Maximal degree in co-relation 17046. Up to 7964 conditions per place. [2024-11-08 19:23:18,992 INFO L140 encePairwiseOnDemand]: 95/104 looper letters, 41 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2024-11-08 19:23:18,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 326 flow [2024-11-08 19:23:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:23:18,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 19:23:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2024-11-08 19:23:18,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42467948717948717 [2024-11-08 19:23:18,996 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 228 flow. Second operand 6 states and 265 transitions. [2024-11-08 19:23:18,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 326 flow [2024-11-08 19:23:19,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 326 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 19:23:19,005 INFO L231 Difference]: Finished difference. Result has 85 places, 85 transitions, 244 flow [2024-11-08 19:23:19,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=85, PETRI_TRANSITIONS=85} [2024-11-08 19:23:19,007 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -14 predicate places. [2024-11-08 19:23:19,008 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 85 transitions, 244 flow [2024-11-08 19:23:19,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:19,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:23:19,011 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 19:23:19,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 19:23:19,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:23:19,216 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-08 19:23:19,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:23:19,217 INFO L85 PathProgramCache]: Analyzing trace with hash 591681548, now seen corresponding path program 1 times [2024-11-08 19:23:19,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:23:19,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906787657] [2024-11-08 19:23:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:19,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:23:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:19,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:23:19,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:23:19,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906787657] [2024-11-08 19:23:19,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906787657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:23:19,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736335288] [2024-11-08 19:23:19,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:19,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:23:19,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:23:19,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:23:19,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:23:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:19,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:23:19,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:23:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:23:19,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:23:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:23:19,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736335288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:23:19,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:23:19,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 19:23:19,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792693680] [2024-11-08 19:23:19,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:23:19,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 19:23:19,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:23:19,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 19:23:19,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 19:23:19,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 104 [2024-11-08 19:23:19,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 85 transitions, 244 flow. Second operand has 12 states, 12 states have (on average 36.083333333333336) internal successors, (433), 12 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:19,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:23:19,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 104 [2024-11-08 19:23:19,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:23:22,313 INFO L124 PetriNetUnfolderBase]: 5763/8930 cut-off events. [2024-11-08 19:23:22,313 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-11-08 19:23:22,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17214 conditions, 8930 events. 5763/8930 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 1227. Compared 69654 event pairs, 4968 based on Foata normal form. 6/4235 useless extension candidates. Maximal degree in co-relation 17048. Up to 7975 conditions per place. [2024-11-08 19:23:22,386 INFO L140 encePairwiseOnDemand]: 95/104 looper letters, 46 selfloop transitions, 25 changer transitions 0/103 dead transitions. [2024-11-08 19:23:22,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 103 transitions, 500 flow [2024-11-08 19:23:22,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 19:23:22,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 19:23:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 427 transitions. [2024-11-08 19:23:22,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41057692307692306 [2024-11-08 19:23:22,390 INFO L175 Difference]: Start difference. First operand has 85 places, 85 transitions, 244 flow. Second operand 10 states and 427 transitions. [2024-11-08 19:23:22,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 103 transitions, 500 flow [2024-11-08 19:23:22,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 103 transitions, 442 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-08 19:23:22,395 INFO L231 Difference]: Finished difference. Result has 92 places, 103 transitions, 384 flow [2024-11-08 19:23:22,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=384, PETRI_PLACES=92, PETRI_TRANSITIONS=103} [2024-11-08 19:23:22,396 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -7 predicate places. [2024-11-08 19:23:22,397 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 103 transitions, 384 flow [2024-11-08 19:23:22,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.083333333333336) internal successors, (433), 12 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:22,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:23:22,398 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:23:22,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 19:23:22,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:23:22,602 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-08 19:23:22,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:23:22,605 INFO L85 PathProgramCache]: Analyzing trace with hash -318124113, now seen corresponding path program 1 times [2024-11-08 19:23:22,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:23:22,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037185077] [2024-11-08 19:23:22,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:22,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:23:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:23:22,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:23:22,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037185077] [2024-11-08 19:23:22,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037185077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:23:22,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:23:22,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:23:22,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708211272] [2024-11-08 19:23:22,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:23:22,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:23:22,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:23:22,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:23:22,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:23:22,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 104 [2024-11-08 19:23:22,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 103 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:22,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:23:22,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 104 [2024-11-08 19:23:22,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:23:25,559 INFO L124 PetriNetUnfolderBase]: 5763/8932 cut-off events. [2024-11-08 19:23:25,559 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-11-08 19:23:25,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17247 conditions, 8932 events. 5763/8932 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 1225. Compared 69424 event pairs, 4968 based on Foata normal form. 2/4243 useless extension candidates. Maximal degree in co-relation 17170. Up to 8000 conditions per place. [2024-11-08 19:23:25,662 INFO L140 encePairwiseOnDemand]: 94/104 looper letters, 64 selfloop transitions, 7 changer transitions 7/108 dead transitions. [2024-11-08 19:23:25,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 108 transitions, 546 flow [2024-11-08 19:23:25,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:23:25,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 19:23:25,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-11-08 19:23:25,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4855769230769231 [2024-11-08 19:23:25,665 INFO L175 Difference]: Start difference. First operand has 92 places, 103 transitions, 384 flow. Second operand 4 states and 202 transitions. [2024-11-08 19:23:25,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 108 transitions, 546 flow [2024-11-08 19:23:25,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 108 transitions, 523 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-08 19:23:25,675 INFO L231 Difference]: Finished difference. Result has 95 places, 101 transitions, 382 flow [2024-11-08 19:23:25,676 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=382, PETRI_PLACES=95, PETRI_TRANSITIONS=101} [2024-11-08 19:23:25,678 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -4 predicate places. [2024-11-08 19:23:25,680 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 101 transitions, 382 flow [2024-11-08 19:23:25,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:25,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:23:25,681 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:23:25,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:23:25,682 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-08 19:23:25,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:23:25,683 INFO L85 PathProgramCache]: Analyzing trace with hash 188815388, now seen corresponding path program 1 times [2024-11-08 19:23:25,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:23:25,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304280467] [2024-11-08 19:23:25,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:25,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:23:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:23:26,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:23:26,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304280467] [2024-11-08 19:23:26,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304280467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:23:26,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449081089] [2024-11-08 19:23:26,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:26,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:23:26,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:23:26,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:23:26,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:23:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:26,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 19:23:26,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:23:26,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:23:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:23:26,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:23:26,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-08 19:23:27,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-08 19:23:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:23:27,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449081089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:23:27,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:23:27,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-08 19:23:27,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251122278] [2024-11-08 19:23:27,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:23:27,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 19:23:27,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:23:27,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 19:23:27,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-08 19:23:27,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 104 [2024-11-08 19:23:27,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 101 transitions, 382 flow. Second operand has 13 states, 13 states have (on average 40.76923076923077) internal successors, (530), 13 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:27,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:23:27,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 104 [2024-11-08 19:23:27,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:23:30,569 INFO L124 PetriNetUnfolderBase]: 9811/15902 cut-off events. [2024-11-08 19:23:30,569 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-08 19:23:30,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29926 conditions, 15902 events. 9811/15902 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 125813 event pairs, 2936 based on Foata normal form. 0/8096 useless extension candidates. Maximal degree in co-relation 29848. Up to 5348 conditions per place. [2024-11-08 19:23:30,696 INFO L140 encePairwiseOnDemand]: 87/104 looper letters, 102 selfloop transitions, 23 changer transitions 0/159 dead transitions. [2024-11-08 19:23:30,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 159 transitions, 754 flow [2024-11-08 19:23:30,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:23:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 19:23:30,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 420 transitions. [2024-11-08 19:23:30,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5048076923076923 [2024-11-08 19:23:30,701 INFO L175 Difference]: Start difference. First operand has 95 places, 101 transitions, 382 flow. Second operand 8 states and 420 transitions. [2024-11-08 19:23:30,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 159 transitions, 754 flow [2024-11-08 19:23:30,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 159 transitions, 731 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-08 19:23:30,708 INFO L231 Difference]: Finished difference. Result has 99 places, 109 transitions, 454 flow [2024-11-08 19:23:30,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=454, PETRI_PLACES=99, PETRI_TRANSITIONS=109} [2024-11-08 19:23:30,711 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 0 predicate places. [2024-11-08 19:23:30,712 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 109 transitions, 454 flow [2024-11-08 19:23:30,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 40.76923076923077) internal successors, (530), 13 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:30,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:23:30,713 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:23:30,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 19:23:30,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:23:30,914 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-08 19:23:30,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:23:30,914 INFO L85 PathProgramCache]: Analyzing trace with hash 188815389, now seen corresponding path program 1 times [2024-11-08 19:23:30,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:23:30,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326633786] [2024-11-08 19:23:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:30,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:23:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:31,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:23:31,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:23:31,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326633786] [2024-11-08 19:23:31,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326633786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:23:31,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49047377] [2024-11-08 19:23:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:31,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:23:31,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:23:31,322 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:23:31,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 19:23:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:31,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 19:23:31,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:23:31,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:23:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:23:31,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:23:31,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-08 19:23:31,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-08 19:23:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:23:31,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49047377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:23:31,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:23:31,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-08 19:23:31,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513646678] [2024-11-08 19:23:31,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:23:31,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 19:23:31,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:23:31,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 19:23:31,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-08 19:23:31,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 104 [2024-11-08 19:23:31,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 109 transitions, 454 flow. Second operand has 13 states, 13 states have (on average 40.76923076923077) internal successors, (530), 13 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:31,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:23:31,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 104 [2024-11-08 19:23:31,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:23:35,041 INFO L124 PetriNetUnfolderBase]: 9388/15854 cut-off events. [2024-11-08 19:23:35,041 INFO L125 PetriNetUnfolderBase]: For 3716/3716 co-relation queries the response was YES. [2024-11-08 19:23:35,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34866 conditions, 15854 events. 9388/15854 cut-off events. For 3716/3716 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 136346 event pairs, 1968 based on Foata normal form. 0/8489 useless extension candidates. Maximal degree in co-relation 34787. Up to 4584 conditions per place. [2024-11-08 19:23:35,180 INFO L140 encePairwiseOnDemand]: 87/104 looper letters, 101 selfloop transitions, 23 changer transitions 0/158 dead transitions. [2024-11-08 19:23:35,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 158 transitions, 804 flow [2024-11-08 19:23:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:23:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 19:23:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 419 transitions. [2024-11-08 19:23:35,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5036057692307693 [2024-11-08 19:23:35,183 INFO L175 Difference]: Start difference. First operand has 99 places, 109 transitions, 454 flow. Second operand 8 states and 419 transitions. [2024-11-08 19:23:35,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 158 transitions, 804 flow [2024-11-08 19:23:35,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 158 transitions, 782 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 19:23:35,192 INFO L231 Difference]: Finished difference. Result has 102 places, 108 transitions, 474 flow [2024-11-08 19:23:35,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=474, PETRI_PLACES=102, PETRI_TRANSITIONS=108} [2024-11-08 19:23:35,194 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 3 predicate places. [2024-11-08 19:23:35,194 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 108 transitions, 474 flow [2024-11-08 19:23:35,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 40.76923076923077) internal successors, (530), 13 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:35,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:23:35,195 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:23:35,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 19:23:35,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:23:35,400 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-08 19:23:35,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:23:35,402 INFO L85 PathProgramCache]: Analyzing trace with hash 188815397, now seen corresponding path program 1 times [2024-11-08 19:23:35,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:23:35,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282135507] [2024-11-08 19:23:35,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:35,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:23:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 19:23:35,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:23:35,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282135507] [2024-11-08 19:23:35,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282135507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:23:35,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:23:35,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 19:23:35,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380439378] [2024-11-08 19:23:35,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:23:35,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:23:35,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:23:35,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:23:35,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:23:35,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 104 [2024-11-08 19:23:35,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 108 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:35,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:23:35,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 104 [2024-11-08 19:23:35,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:23:38,821 INFO L124 PetriNetUnfolderBase]: 8846/15280 cut-off events. [2024-11-08 19:23:38,821 INFO L125 PetriNetUnfolderBase]: For 7489/7489 co-relation queries the response was YES. [2024-11-08 19:23:38,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35385 conditions, 15280 events. 8846/15280 cut-off events. For 7489/7489 co-relation queries the response was YES. Maximal size of possible extension queue 1379. Compared 134305 event pairs, 2468 based on Foata normal form. 0/8660 useless extension candidates. Maximal degree in co-relation 35305. Up to 8183 conditions per place. [2024-11-08 19:23:38,934 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 97 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-11-08 19:23:38,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 133 transitions, 723 flow [2024-11-08 19:23:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:23:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:23:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2024-11-08 19:23:38,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-08 19:23:38,936 INFO L175 Difference]: Start difference. First operand has 102 places, 108 transitions, 474 flow. Second operand 3 states and 195 transitions. [2024-11-08 19:23:38,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 133 transitions, 723 flow [2024-11-08 19:23:38,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 133 transitions, 698 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 19:23:38,945 INFO L231 Difference]: Finished difference. Result has 99 places, 106 transitions, 445 flow [2024-11-08 19:23:38,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=99, PETRI_TRANSITIONS=106} [2024-11-08 19:23:38,946 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 0 predicate places. [2024-11-08 19:23:38,947 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 106 transitions, 445 flow [2024-11-08 19:23:38,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:38,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:23:38,947 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:23:38,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 19:23:38,948 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-08 19:23:38,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:23:38,948 INFO L85 PathProgramCache]: Analyzing trace with hash 188815391, now seen corresponding path program 1 times [2024-11-08 19:23:38,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:23:38,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656556793] [2024-11-08 19:23:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:38,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:23:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:39,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:23:39,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:23:39,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656556793] [2024-11-08 19:23:39,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656556793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:23:39,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937707622] [2024-11-08 19:23:39,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:39,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:23:39,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:23:39,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:23:39,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 19:23:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:39,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 19:23:39,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:23:39,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 19:23:39,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:23:39,822 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 19:23:39,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 19:23:39,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-08 19:23:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:23:39,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:23:40,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:23:40,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-08 19:23:40,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:23:40,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-11-08 19:23:40,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-08 19:23:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:23:40,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937707622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:23:40,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:23:40,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-11-08 19:23:40,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556836424] [2024-11-08 19:23:40,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:23:40,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 19:23:40,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:23:40,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 19:23:40,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=190, Unknown=2, NotChecked=0, Total=240 [2024-11-08 19:23:40,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 104 [2024-11-08 19:23:40,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 106 transitions, 445 flow. Second operand has 16 states, 16 states have (on average 30.75) internal successors, (492), 16 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:40,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:23:40,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 104 [2024-11-08 19:23:40,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:23:44,054 INFO L124 PetriNetUnfolderBase]: 12838/19556 cut-off events. [2024-11-08 19:23:44,055 INFO L125 PetriNetUnfolderBase]: For 4297/4297 co-relation queries the response was YES. [2024-11-08 19:23:44,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45396 conditions, 19556 events. 12838/19556 cut-off events. For 4297/4297 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 155275 event pairs, 7157 based on Foata normal form. 0/11142 useless extension candidates. Maximal degree in co-relation 45311. Up to 11563 conditions per place. [2024-11-08 19:23:44,205 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 122 selfloop transitions, 17 changer transitions 0/162 dead transitions. [2024-11-08 19:23:44,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 162 transitions, 839 flow [2024-11-08 19:23:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 19:23:44,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 19:23:44,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 430 transitions. [2024-11-08 19:23:44,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3758741258741259 [2024-11-08 19:23:44,208 INFO L175 Difference]: Start difference. First operand has 99 places, 106 transitions, 445 flow. Second operand 11 states and 430 transitions. [2024-11-08 19:23:44,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 162 transitions, 839 flow [2024-11-08 19:23:44,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 162 transitions, 837 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:23:44,221 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 473 flow [2024-11-08 19:23:44,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=473, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2024-11-08 19:23:44,222 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 9 predicate places. [2024-11-08 19:23:44,222 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 473 flow [2024-11-08 19:23:44,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 30.75) internal successors, (492), 16 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:44,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:23:44,223 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:23:44,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 19:23:44,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 19:23:44,424 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-08 19:23:44,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:23:44,424 INFO L85 PathProgramCache]: Analyzing trace with hash 188815392, now seen corresponding path program 1 times [2024-11-08 19:23:44,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:23:44,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301175029] [2024-11-08 19:23:44,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:44,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:23:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:23:44,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:23:44,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301175029] [2024-11-08 19:23:44,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301175029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:23:44,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713854954] [2024-11-08 19:23:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:44,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:23:44,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:23:44,927 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:23:44,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 19:23:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:45,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 19:23:45,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:23:45,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 19:23:45,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:23:45,216 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 19:23:45,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 19:23:45,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-08 19:23:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:23:45,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:23:45,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:23:45,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-08 19:23:45,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:23:45,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-11-08 19:23:45,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-08 19:23:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:23:45,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713854954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:23:45,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:23:45,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-11-08 19:23:45,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168995146] [2024-11-08 19:23:45,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:23:45,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 19:23:45,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:23:45,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 19:23:45,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=189, Unknown=3, NotChecked=0, Total=240 [2024-11-08 19:23:45,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 104 [2024-11-08 19:23:45,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 473 flow. Second operand has 16 states, 16 states have (on average 30.75) internal successors, (492), 16 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:45,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:23:45,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 104 [2024-11-08 19:23:45,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:23:48,604 INFO L124 PetriNetUnfolderBase]: 12296/18792 cut-off events. [2024-11-08 19:23:48,605 INFO L125 PetriNetUnfolderBase]: For 6988/6988 co-relation queries the response was YES. [2024-11-08 19:23:48,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44304 conditions, 18792 events. 12296/18792 cut-off events. For 6988/6988 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 148921 event pairs, 7157 based on Foata normal form. 222/11074 useless extension candidates. Maximal degree in co-relation 44217. Up to 11563 conditions per place. [2024-11-08 19:23:48,706 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 121 selfloop transitions, 17 changer transitions 0/161 dead transitions. [2024-11-08 19:23:48,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 161 transitions, 865 flow [2024-11-08 19:23:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 19:23:48,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 19:23:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 429 transitions. [2024-11-08 19:23:48,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-08 19:23:48,709 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 473 flow. Second operand 11 states and 429 transitions. [2024-11-08 19:23:48,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 161 transitions, 865 flow [2024-11-08 19:23:48,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 161 transitions, 832 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-08 19:23:48,719 INFO L231 Difference]: Finished difference. Result has 111 places, 104 transitions, 470 flow [2024-11-08 19:23:48,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=470, PETRI_PLACES=111, PETRI_TRANSITIONS=104} [2024-11-08 19:23:48,720 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 12 predicate places. [2024-11-08 19:23:48,720 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 104 transitions, 470 flow [2024-11-08 19:23:48,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 30.75) internal successors, (492), 16 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:48,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:23:48,721 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:23:48,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 19:23:48,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:23:48,925 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-08 19:23:48,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:23:48,926 INFO L85 PathProgramCache]: Analyzing trace with hash 213028646, now seen corresponding path program 1 times [2024-11-08 19:23:48,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:23:48,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181940991] [2024-11-08 19:23:48,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:48,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:23:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:23:49,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:23:49,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181940991] [2024-11-08 19:23:49,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181940991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:23:49,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034438097] [2024-11-08 19:23:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:49,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:23:49,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:23:49,137 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:23:49,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 19:23:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:49,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 19:23:49,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:23:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:23:49,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:23:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:23:49,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034438097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:23:49,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:23:49,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-08 19:23:49,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319528366] [2024-11-08 19:23:49,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:23:49,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 19:23:49,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:23:49,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 19:23:49,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-08 19:23:50,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 104 [2024-11-08 19:23:50,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 104 transitions, 470 flow. Second operand has 17 states, 17 states have (on average 27.11764705882353) internal successors, (461), 17 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:50,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:23:50,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 104 [2024-11-08 19:23:50,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:23:53,580 INFO L124 PetriNetUnfolderBase]: 12830/20046 cut-off events. [2024-11-08 19:23:53,580 INFO L125 PetriNetUnfolderBase]: For 17430/17430 co-relation queries the response was YES. [2024-11-08 19:23:53,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52416 conditions, 20046 events. 12830/20046 cut-off events. For 17430/17430 co-relation queries the response was YES. Maximal size of possible extension queue 1471. Compared 159215 event pairs, 9162 based on Foata normal form. 1/12509 useless extension candidates. Maximal degree in co-relation 52277. Up to 12687 conditions per place. [2024-11-08 19:23:53,724 INFO L140 encePairwiseOnDemand]: 85/104 looper letters, 150 selfloop transitions, 55 changer transitions 0/227 dead transitions. [2024-11-08 19:23:53,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 227 transitions, 1498 flow [2024-11-08 19:23:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 19:23:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 19:23:53,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 542 transitions. [2024-11-08 19:23:53,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3474358974358974 [2024-11-08 19:23:53,727 INFO L175 Difference]: Start difference. First operand has 111 places, 104 transitions, 470 flow. Second operand 15 states and 542 transitions. [2024-11-08 19:23:53,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 227 transitions, 1498 flow [2024-11-08 19:23:53,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 227 transitions, 1414 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-08 19:23:53,737 INFO L231 Difference]: Finished difference. Result has 123 places, 138 transitions, 851 flow [2024-11-08 19:23:53,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=851, PETRI_PLACES=123, PETRI_TRANSITIONS=138} [2024-11-08 19:23:53,738 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 24 predicate places. [2024-11-08 19:23:53,739 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 138 transitions, 851 flow [2024-11-08 19:23:53,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 27.11764705882353) internal successors, (461), 17 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:53,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:23:53,740 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:23:53,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 19:23:53,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:23:53,944 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-08 19:23:53,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:23:53,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1063017448, now seen corresponding path program 1 times [2024-11-08 19:23:53,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:23:53,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941629506] [2024-11-08 19:23:53,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:53,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:23:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 19:23:54,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:23:54,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941629506] [2024-11-08 19:23:54,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941629506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:23:54,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:23:54,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:23:54,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807061016] [2024-11-08 19:23:54,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:23:54,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:23:54,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:23:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:23:54,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:23:54,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 104 [2024-11-08 19:23:54,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 138 transitions, 851 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:54,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:23:54,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 104 [2024-11-08 19:23:54,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:23:57,383 INFO L124 PetriNetUnfolderBase]: 12741/20650 cut-off events. [2024-11-08 19:23:57,383 INFO L125 PetriNetUnfolderBase]: For 11943/11943 co-relation queries the response was YES. [2024-11-08 19:23:57,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52149 conditions, 20650 events. 12741/20650 cut-off events. For 11943/11943 co-relation queries the response was YES. Maximal size of possible extension queue 1661. Compared 170232 event pairs, 3958 based on Foata normal form. 580/13856 useless extension candidates. Maximal degree in co-relation 52001. Up to 14531 conditions per place. [2024-11-08 19:23:57,549 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 149 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2024-11-08 19:23:57,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 193 transitions, 1299 flow [2024-11-08 19:23:57,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:23:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 19:23:57,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-11-08 19:23:57,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-11-08 19:23:57,551 INFO L175 Difference]: Start difference. First operand has 123 places, 138 transitions, 851 flow. Second operand 4 states and 248 transitions. [2024-11-08 19:23:57,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 193 transitions, 1299 flow [2024-11-08 19:23:57,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 193 transitions, 1283 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-11-08 19:23:57,610 INFO L231 Difference]: Finished difference. Result has 128 places, 139 transitions, 856 flow [2024-11-08 19:23:57,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=856, PETRI_PLACES=128, PETRI_TRANSITIONS=139} [2024-11-08 19:23:57,611 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 29 predicate places. [2024-11-08 19:23:57,611 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 139 transitions, 856 flow [2024-11-08 19:23:57,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:23:57,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:23:57,611 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-08 19:23:57,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 19:23:57,612 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-08 19:23:57,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:23:57,612 INFO L85 PathProgramCache]: Analyzing trace with hash -973755750, now seen corresponding path program 2 times [2024-11-08 19:23:57,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:23:57,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803683216] [2024-11-08 19:23:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:23:57,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:23:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:23:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:23:57,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:23:57,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803683216] [2024-11-08 19:23:57,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803683216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:23:57,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932594725] [2024-11-08 19:23:57,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 19:23:57,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:23:57,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:23:57,818 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:23:57,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 19:23:57,984 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 19:23:57,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:23:57,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 19:23:57,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:23:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 19:23:58,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:23:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 19:23:58,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932594725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:23:58,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:23:58,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3, 3] total 13 [2024-11-08 19:23:58,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620053348] [2024-11-08 19:23:58,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:23:58,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 19:23:58,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:23:58,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 19:23:58,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 19:23:58,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 104 [2024-11-08 19:23:58,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 139 transitions, 856 flow. Second operand has 15 states, 15 states have (on average 30.533333333333335) internal successors, (458), 15 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) [2024-11-08 19:23:58,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:23:58,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 104 [2024-11-08 19:23:58,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:24:00,873 INFO L124 PetriNetUnfolderBase]: 9834/16600 cut-off events. [2024-11-08 19:24:00,873 INFO L125 PetriNetUnfolderBase]: For 15590/15590 co-relation queries the response was YES. [2024-11-08 19:24:00,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45428 conditions, 16600 events. 9834/16600 cut-off events. For 15590/15590 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 139799 event pairs, 8470 based on Foata normal form. 4/10645 useless extension candidates. Maximal degree in co-relation 45195. Up to 13540 conditions per place. [2024-11-08 19:24:01,020 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 85 selfloop transitions, 82 changer transitions 0/195 dead transitions. [2024-11-08 19:24:01,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 195 transitions, 1573 flow [2024-11-08 19:24:01,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 19:24:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-08 19:24:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 902 transitions. [2024-11-08 19:24:01,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3212250712250712 [2024-11-08 19:24:01,025 INFO L175 Difference]: Start difference. First operand has 128 places, 139 transitions, 856 flow. Second operand 27 states and 902 transitions. [2024-11-08 19:24:01,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 195 transitions, 1573 flow [2024-11-08 19:24:01,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 195 transitions, 1567 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 19:24:01,133 INFO L231 Difference]: Finished difference. Result has 154 places, 174 transitions, 1325 flow [2024-11-08 19:24:01,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1325, PETRI_PLACES=154, PETRI_TRANSITIONS=174} [2024-11-08 19:24:01,134 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 55 predicate places. [2024-11-08 19:24:01,134 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 174 transitions, 1325 flow [2024-11-08 19:24:01,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.533333333333335) internal successors, (458), 15 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) [2024-11-08 19:24:01,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:24:01,135 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:24:01,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 19:24:01,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:24:01,340 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-08 19:24:01,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:24:01,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1356974130, now seen corresponding path program 1 times [2024-11-08 19:24:01,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:24:01,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686877009] [2024-11-08 19:24:01,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:24:01,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:24:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:24:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:24:01,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:24:01,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686877009] [2024-11-08 19:24:01,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686877009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:24:01,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755558110] [2024-11-08 19:24:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:24:01,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:24:01,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:24:01,986 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:24:01,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 19:24:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:24:02,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-08 19:24:02,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:24:02,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 19:24:02,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:24:02,377 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 19:24:02,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 19:24:02,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-08 19:24:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:24:02,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:24:02,977 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_181 (Array Int Int)) (~M~0 Int)) (or (< ~M~0 0) (< c_~N~0 (+ ~M~0 1)) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_181) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) 2147483648))) is different from false [2024-11-08 19:24:03,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:24:03,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-08 19:24:03,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:24:03,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-11-08 19:24:03,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-08 19:24:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-08 19:24:03,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755558110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:24:03,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:24:03,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-11-08 19:24:03,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339687449] [2024-11-08 19:24:03,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:24:03,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 19:24:03,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:24:03,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 19:24:03,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=477, Unknown=1, NotChecked=44, Total=600 [2024-11-08 19:24:03,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 104 [2024-11-08 19:24:03,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 174 transitions, 1325 flow. Second operand has 25 states, 25 states have (on average 16.56) internal successors, (414), 25 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:24:03,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:24:03,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 104 [2024-11-08 19:24:03,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:24:28,695 INFO L124 PetriNetUnfolderBase]: 83430/125815 cut-off events. [2024-11-08 19:24:28,695 INFO L125 PetriNetUnfolderBase]: For 82966/82966 co-relation queries the response was YES. [2024-11-08 19:24:29,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325153 conditions, 125815 events. 83430/125815 cut-off events. For 82966/82966 co-relation queries the response was YES. Maximal size of possible extension queue 3153. Compared 981964 event pairs, 46725 based on Foata normal form. 0/82264 useless extension candidates. Maximal degree in co-relation 324872. Up to 35265 conditions per place. [2024-11-08 19:24:29,865 INFO L140 encePairwiseOnDemand]: 84/104 looper letters, 403 selfloop transitions, 139 changer transitions 12/566 dead transitions. [2024-11-08 19:24:29,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 566 transitions, 4588 flow [2024-11-08 19:24:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 19:24:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-08 19:24:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 817 transitions. [2024-11-08 19:24:29,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2618589743589744 [2024-11-08 19:24:29,871 INFO L175 Difference]: Start difference. First operand has 154 places, 174 transitions, 1325 flow. Second operand 30 states and 817 transitions. [2024-11-08 19:24:29,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 566 transitions, 4588 flow [2024-11-08 19:24:30,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 566 transitions, 4264 flow, removed 90 selfloop flow, removed 11 redundant places. [2024-11-08 19:24:30,291 INFO L231 Difference]: Finished difference. Result has 181 places, 249 transitions, 2207 flow [2024-11-08 19:24:30,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2207, PETRI_PLACES=181, PETRI_TRANSITIONS=249} [2024-11-08 19:24:30,293 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 82 predicate places. [2024-11-08 19:24:30,296 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 249 transitions, 2207 flow [2024-11-08 19:24:30,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 16.56) internal successors, (414), 25 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:24:30,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:24:30,297 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:24:30,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 19:24:30,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87671857-88d7-48e1-bf21-114ea106adba/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 19:24:30,498 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-08 19:24:30,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:24:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1356974135, now seen corresponding path program 1 times [2024-11-08 19:24:30,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:24:30,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060571947] [2024-11-08 19:24:30,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:24:30,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:24:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:24:30,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 19:24:30,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:24:30,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060571947] [2024-11-08 19:24:30,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060571947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:24:30,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:24:30,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 19:24:30,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289069246] [2024-11-08 19:24:30,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:24:30,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:24:30,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:24:30,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:24:30,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:24:30,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 104 [2024-11-08 19:24:30,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 249 transitions, 2207 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:24:30,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:24:30,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 104 [2024-11-08 19:24:30,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand