./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-max.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_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/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_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/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_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/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 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:29:44,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:29:44,967 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 18:29:44,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:29:44,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:29:44,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:29:44,995 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:29:44,996 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:29:44,996 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:29:44,997 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:29:44,997 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:29:44,997 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:29:44,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:29:44,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:29:44,999 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:29:44,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:29:44,999 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:29:45,000 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:29:45,000 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:29:45,000 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:29:45,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:29:45,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:29:45,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:29:45,002 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:29:45,002 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:29:45,003 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 18:29:45,003 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:29:45,003 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:29:45,004 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:29:45,004 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:29:45,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:29:45,005 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:29:45,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:29:45,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:29:45,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:29:45,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:29:45,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:29:45,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:29:45,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:29:45,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:29:45,012 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:29:45,012 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:29:45,012 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:29:45,013 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:29:45,013 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_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 [2024-11-08 18:29:45,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:29:45,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:29:45,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:29:45,337 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:29:45,338 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:29:45,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c Unable to find full path for "g++" [2024-11-08 18:29:47,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:29:47,628 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:29:47,628 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-11-08 18:29:47,642 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/data/e98e532bb/f3e9ac63d4914d53ab736b20a0300308/FLAG35cceb342 [2024-11-08 18:29:47,657 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/data/e98e532bb/f3e9ac63d4914d53ab736b20a0300308 [2024-11-08 18:29:47,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:29:47,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:29:47,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:29:47,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:29:47,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:29:47,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:29:47" (1/1) ... [2024-11-08 18:29:47,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125f2186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:47, skipping insertion in model container [2024-11-08 18:29:47,674 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:29:47" (1/1) ... [2024-11-08 18:29:47,707 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:29:48,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:29:48,022 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:29:48,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:29:48,098 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:29:48,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:48 WrapperNode [2024-11-08 18:29:48,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:29:48,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:29:48,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:29:48,101 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:29:48,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:48" (1/1) ... [2024-11-08 18:29:48,120 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:48" (1/1) ... [2024-11-08 18:29:48,177 INFO L138 Inliner]: procedures = 25, calls = 43, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 272 [2024-11-08 18:29:48,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:29:48,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:29:48,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:29:48,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:29:48,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:48" (1/1) ... [2024-11-08 18:29:48,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:48" (1/1) ... [2024-11-08 18:29:48,198 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:48" (1/1) ... [2024-11-08 18:29:48,216 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-08 18:29:48,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:48" (1/1) ... [2024-11-08 18:29:48,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:48" (1/1) ... [2024-11-08 18:29:48,228 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:48" (1/1) ... [2024-11-08 18:29:48,233 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:48" (1/1) ... [2024-11-08 18:29:48,235 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:48" (1/1) ... [2024-11-08 18:29:48,237 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:48" (1/1) ... [2024-11-08 18:29:48,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:29:48,242 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:29:48,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:29:48,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:29:48,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:48" (1/1) ... [2024-11-08 18:29:48,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:29:48,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:29:48,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:29:48,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:29:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:29:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 18:29:48,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 18:29:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 18:29:48,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 18:29:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 18:29:48,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 18:29:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:29:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:29:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:29:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:29:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 18:29:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 18:29:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 18:29:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:29:48,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:29:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:29:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:29:48,343 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 18:29:48,477 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:29:48,480 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:29:49,151 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:29:49,151 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:29:49,628 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:29:49,629 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:29:49,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:29:49 BoogieIcfgContainer [2024-11-08 18:29:49,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:29:49,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:29:49,635 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:29:49,639 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:29:49,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:29:47" (1/3) ... [2024-11-08 18:29:49,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7912aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:29:49, skipping insertion in model container [2024-11-08 18:29:49,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:29:48" (2/3) ... [2024-11-08 18:29:49,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7912aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:29:49, skipping insertion in model container [2024-11-08 18:29:49,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:29:49" (3/3) ... [2024-11-08 18:29:49,644 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2024-11-08 18:29:49,663 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:29:49,663 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-08 18:29:49,664 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:29:49,788 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 18:29:49,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 123 transitions, 267 flow [2024-11-08 18:29:49,909 INFO L124 PetriNetUnfolderBase]: 17/120 cut-off events. [2024-11-08 18:29:49,909 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 18:29:49,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 120 events. 17/120 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 282 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2024-11-08 18:29:49,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 123 transitions, 267 flow [2024-11-08 18:29:49,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 119 transitions, 256 flow [2024-11-08 18:29:49,937 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:29:49,946 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;@56bcb62a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:29:49,946 INFO L334 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2024-11-08 18:29:49,951 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:29:49,954 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-11-08 18:29:49,954 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:29:49,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:29:49,955 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 18:29:49,956 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:29:49,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:29:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash 31205073, now seen corresponding path program 1 times [2024-11-08 18:29:49,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:29:49,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751617706] [2024-11-08 18:29:49,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:49,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:29:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:50,361 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 18:29:50,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:29:50,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751617706] [2024-11-08 18:29:50,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751617706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:29:50,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:29:50,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:29:50,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414831549] [2024-11-08 18:29:50,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:29:50,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:29:50,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:29:50,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:29:50,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:29:50,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 123 [2024-11-08 18:29:50,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 119 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 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 18:29:50,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:29:50,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 123 [2024-11-08 18:29:50,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:29:51,264 INFO L124 PetriNetUnfolderBase]: 1245/2616 cut-off events. [2024-11-08 18:29:51,264 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2024-11-08 18:29:51,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4309 conditions, 2616 events. 1245/2616 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19424 event pairs, 826 based on Foata normal form. 3/1949 useless extension candidates. Maximal degree in co-relation 3844. Up to 1545 conditions per place. [2024-11-08 18:29:51,291 INFO L140 encePairwiseOnDemand]: 105/123 looper letters, 52 selfloop transitions, 10 changer transitions 0/126 dead transitions. [2024-11-08 18:29:51,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 126 transitions, 394 flow [2024-11-08 18:29:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:29:51,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:29:51,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2024-11-08 18:29:51,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6869918699186992 [2024-11-08 18:29:51,311 INFO L175 Difference]: Start difference. First operand has 112 places, 119 transitions, 256 flow. Second operand 4 states and 338 transitions. [2024-11-08 18:29:51,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 126 transitions, 394 flow [2024-11-08 18:29:51,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 126 transitions, 382 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 18:29:51,325 INFO L231 Difference]: Finished difference. Result has 110 places, 126 transitions, 328 flow [2024-11-08 18:29:51,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=110, PETRI_TRANSITIONS=126} [2024-11-08 18:29:51,334 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, -2 predicate places. [2024-11-08 18:29:51,335 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 126 transitions, 328 flow [2024-11-08 18:29:51,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 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 18:29:51,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:29:51,336 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 18:29:51,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:29:51,337 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:29:51,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:29:51,338 INFO L85 PathProgramCache]: Analyzing trace with hash -657430967, now seen corresponding path program 1 times [2024-11-08 18:29:51,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:29:51,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956265868] [2024-11-08 18:29:51,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:51,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:29:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:51,544 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 18:29:51,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:29:51,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956265868] [2024-11-08 18:29:51,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956265868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:29:51,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820946850] [2024-11-08 18:29:51,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:51,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:29:51,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:29:51,549 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:29:51,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:29:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:51,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:29:51,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:29:51,739 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 18:29:51,739 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:29:51,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820946850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:29:51,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:29:51,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 18:29:51,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40610420] [2024-11-08 18:29:51,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:29:51,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:29:51,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:29:51,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:29:51,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:29:51,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 123 [2024-11-08 18:29:51,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 126 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 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 18:29:51,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:29:51,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 123 [2024-11-08 18:29:51,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:29:52,501 INFO L124 PetriNetUnfolderBase]: 1245/2613 cut-off events. [2024-11-08 18:29:52,501 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-11-08 18:29:52,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4244 conditions, 2613 events. 1245/2613 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19421 event pairs, 826 based on Foata normal form. 3/1946 useless extension candidates. Maximal degree in co-relation 4162. Up to 1530 conditions per place. [2024-11-08 18:29:52,526 INFO L140 encePairwiseOnDemand]: 110/123 looper letters, 42 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2024-11-08 18:29:52,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 123 transitions, 434 flow [2024-11-08 18:29:52,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:29:52,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:29:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 464 transitions. [2024-11-08 18:29:52,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6287262872628726 [2024-11-08 18:29:52,532 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 328 flow. Second operand 6 states and 464 transitions. [2024-11-08 18:29:52,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 123 transitions, 434 flow [2024-11-08 18:29:52,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 123 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:29:52,540 INFO L231 Difference]: Finished difference. Result has 112 places, 123 transitions, 350 flow [2024-11-08 18:29:52,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=112, PETRI_TRANSITIONS=123} [2024-11-08 18:29:52,543 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 0 predicate places. [2024-11-08 18:29:52,543 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 123 transitions, 350 flow [2024-11-08 18:29:52,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 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 18:29:52,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:29:52,545 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:29:52,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 18:29:52,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:29:52,751 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:29:52,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:29:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1036402347, now seen corresponding path program 1 times [2024-11-08 18:29:52,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:29:52,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586516581] [2024-11-08 18:29:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:52,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:29:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:52,914 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 18:29:52,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:29:52,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586516581] [2024-11-08 18:29:52,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586516581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:29:52,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:29:52,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:29:52,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236130252] [2024-11-08 18:29:52,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:29:52,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:29:52,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:29:52,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:29:52,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:29:52,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 123 [2024-11-08 18:29:52,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 123 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 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 18:29:52,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:29:52,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 123 [2024-11-08 18:29:52,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:29:53,528 INFO L124 PetriNetUnfolderBase]: 1246/2630 cut-off events. [2024-11-08 18:29:53,528 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-11-08 18:29:53,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4293 conditions, 2630 events. 1246/2630 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19457 event pairs, 826 based on Foata normal form. 4/1963 useless extension candidates. Maximal degree in co-relation 4198. Up to 1545 conditions per place. [2024-11-08 18:29:53,548 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 63 selfloop transitions, 10 changer transitions 0/128 dead transitions. [2024-11-08 18:29:53,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 128 transitions, 506 flow [2024-11-08 18:29:53,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:29:53,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:29:53,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2024-11-08 18:29:53,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6382113821138211 [2024-11-08 18:29:53,550 INFO L175 Difference]: Start difference. First operand has 112 places, 123 transitions, 350 flow. Second operand 4 states and 314 transitions. [2024-11-08 18:29:53,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 128 transitions, 506 flow [2024-11-08 18:29:53,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 128 transitions, 468 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-08 18:29:53,555 INFO L231 Difference]: Finished difference. Result has 111 places, 126 transitions, 376 flow [2024-11-08 18:29:53,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=111, PETRI_TRANSITIONS=126} [2024-11-08 18:29:53,556 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, -1 predicate places. [2024-11-08 18:29:53,556 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 126 transitions, 376 flow [2024-11-08 18:29:53,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 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 18:29:53,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:29:53,557 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 18:29:53,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:29:53,557 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:29:53,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:29:53,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1094477574, now seen corresponding path program 1 times [2024-11-08 18:29:53,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:29:53,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754509525] [2024-11-08 18:29:53,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:53,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:29:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:53,647 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 18:29:53,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:29:53,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754509525] [2024-11-08 18:29:53,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754509525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:29:53,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323182353] [2024-11-08 18:29:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:53,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:29:53,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:29:53,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:29:53,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:29:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:53,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:29:53,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:29:53,780 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 18:29:53,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:29:53,836 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 18:29:53,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323182353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:29:53,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:29:53,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 18:29:53,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204235026] [2024-11-08 18:29:53,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:29:53,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 18:29:53,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:29:53,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 18:29:53,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:29:53,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 123 [2024-11-08 18:29:53,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 126 transitions, 376 flow. Second operand has 12 states, 12 states have (on average 68.08333333333333) internal successors, (817), 12 states have internal predecessors, (817), 0 states have call successors, (0), 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 18:29:53,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:29:53,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 123 [2024-11-08 18:29:53,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:29:54,709 INFO L124 PetriNetUnfolderBase]: 1264/2693 cut-off events. [2024-11-08 18:29:54,710 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-08 18:29:54,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4428 conditions, 2693 events. 1264/2693 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19900 event pairs, 826 based on Foata normal form. 9/2028 useless extension candidates. Maximal degree in co-relation 4209. Up to 1550 conditions per place. [2024-11-08 18:29:54,730 INFO L140 encePairwiseOnDemand]: 110/123 looper letters, 52 selfloop transitions, 37 changer transitions 0/153 dead transitions. [2024-11-08 18:29:54,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 153 transitions, 695 flow [2024-11-08 18:29:54,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:29:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 18:29:54,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 765 transitions. [2024-11-08 18:29:54,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-11-08 18:29:54,734 INFO L175 Difference]: Start difference. First operand has 111 places, 126 transitions, 376 flow. Second operand 10 states and 765 transitions. [2024-11-08 18:29:54,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 153 transitions, 695 flow [2024-11-08 18:29:54,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 153 transitions, 695 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:29:54,743 INFO L231 Difference]: Finished difference. Result has 123 places, 153 transitions, 641 flow [2024-11-08 18:29:54,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=641, PETRI_PLACES=123, PETRI_TRANSITIONS=153} [2024-11-08 18:29:54,745 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 11 predicate places. [2024-11-08 18:29:54,745 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 153 transitions, 641 flow [2024-11-08 18:29:54,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.08333333333333) internal successors, (817), 12 states have internal predecessors, (817), 0 states have call successors, (0), 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 18:29:54,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:29:54,746 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:29:54,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 18:29:54,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:29:54,951 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:29:54,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:29:54,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2063700624, now seen corresponding path program 1 times [2024-11-08 18:29:54,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:29:54,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138550145] [2024-11-08 18:29:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:54,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:29:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:55,064 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 18:29:55,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:29:55,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138550145] [2024-11-08 18:29:55,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138550145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:29:55,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:29:55,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:29:55,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689848704] [2024-11-08 18:29:55,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:29:55,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:29:55,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:29:55,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:29:55,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:29:55,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 123 [2024-11-08 18:29:55,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 153 transitions, 641 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 18:29:55,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:29:55,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 123 [2024-11-08 18:29:55,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:29:55,625 INFO L124 PetriNetUnfolderBase]: 1262/2690 cut-off events. [2024-11-08 18:29:55,626 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-11-08 18:29:55,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4514 conditions, 2690 events. 1262/2690 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19796 event pairs, 826 based on Foata normal form. 2/2033 useless extension candidates. Maximal degree in co-relation 4396. Up to 1604 conditions per place. [2024-11-08 18:29:55,651 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 89 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2024-11-08 18:29:55,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 152 transitions, 819 flow [2024-11-08 18:29:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:29:55,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:29:55,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2024-11-08 18:29:55,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6991869918699187 [2024-11-08 18:29:55,653 INFO L175 Difference]: Start difference. First operand has 123 places, 153 transitions, 641 flow. Second operand 3 states and 258 transitions. [2024-11-08 18:29:55,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 152 transitions, 819 flow [2024-11-08 18:29:55,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 152 transitions, 782 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-08 18:29:55,660 INFO L231 Difference]: Finished difference. Result has 124 places, 152 transitions, 610 flow [2024-11-08 18:29:55,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=610, PETRI_PLACES=124, PETRI_TRANSITIONS=152} [2024-11-08 18:29:55,661 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 12 predicate places. [2024-11-08 18:29:55,662 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 152 transitions, 610 flow [2024-11-08 18:29:55,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 18:29:55,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:29:55,662 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:29:55,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:29:55,663 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:29:55,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:29:55,663 INFO L85 PathProgramCache]: Analyzing trace with hash -915197208, now seen corresponding path program 1 times [2024-11-08 18:29:55,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:29:55,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984633620] [2024-11-08 18:29:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:55,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:29:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:29:55,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:29:55,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984633620] [2024-11-08 18:29:55,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984633620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:29:55,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:29:55,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:29:55,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311613742] [2024-11-08 18:29:55,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:29:55,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:29:55,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:29:55,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:29:55,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:29:55,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 123 [2024-11-08 18:29:55,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 152 transitions, 610 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:29:55,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:29:55,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 123 [2024-11-08 18:29:55,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:29:56,392 INFO L124 PetriNetUnfolderBase]: 1258/2684 cut-off events. [2024-11-08 18:29:56,392 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2024-11-08 18:29:56,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4490 conditions, 2684 events. 1258/2684 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19622 event pairs, 826 based on Foata normal form. 4/2029 useless extension candidates. Maximal degree in co-relation 4461. Up to 1587 conditions per place. [2024-11-08 18:29:56,422 INFO L140 encePairwiseOnDemand]: 113/123 looper letters, 77 selfloop transitions, 12 changer transitions 0/150 dead transitions. [2024-11-08 18:29:56,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 150 transitions, 775 flow [2024-11-08 18:29:56,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:29:56,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:29:56,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2024-11-08 18:29:56,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6727642276422764 [2024-11-08 18:29:56,424 INFO L175 Difference]: Start difference. First operand has 124 places, 152 transitions, 610 flow. Second operand 4 states and 331 transitions. [2024-11-08 18:29:56,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 150 transitions, 775 flow [2024-11-08 18:29:56,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 150 transitions, 761 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:29:56,429 INFO L231 Difference]: Finished difference. Result has 126 places, 150 transitions, 627 flow [2024-11-08 18:29:56,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=627, PETRI_PLACES=126, PETRI_TRANSITIONS=150} [2024-11-08 18:29:56,432 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 14 predicate places. [2024-11-08 18:29:56,433 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 150 transitions, 627 flow [2024-11-08 18:29:56,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:29:56,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:29:56,434 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-08 18:29:56,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:29:56,434 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:29:56,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:29:56,435 INFO L85 PathProgramCache]: Analyzing trace with hash -875733602, now seen corresponding path program 2 times [2024-11-08 18:29:56,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:29:56,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909235683] [2024-11-08 18:29:56,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:56,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:29:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:56,675 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 18:29:56,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:29:56,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909235683] [2024-11-08 18:29:56,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909235683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:29:56,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661291006] [2024-11-08 18:29:56,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:29:56,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:29:56,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:29:56,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:29:56,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:29:56,787 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 18:29:56,787 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:29:56,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:29:56,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:29:56,906 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 18:29:56,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:29:56,990 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 18:29:56,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661291006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:29:56,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:29:56,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3, 3] total 13 [2024-11-08 18:29:56,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096908761] [2024-11-08 18:29:56,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:29:56,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:29:56,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:29:56,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:29:56,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:29:57,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 123 [2024-11-08 18:29:57,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 150 transitions, 627 flow. Second operand has 15 states, 15 states have (on average 59.53333333333333) internal successors, (893), 15 states have internal predecessors, (893), 0 states have call successors, (0), 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 18:29:57,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:29:57,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 123 [2024-11-08 18:29:57,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:29:58,301 INFO L124 PetriNetUnfolderBase]: 1269/2721 cut-off events. [2024-11-08 18:29:58,301 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2024-11-08 18:29:58,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4645 conditions, 2721 events. 1269/2721 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19915 event pairs, 826 based on Foata normal form. 6/2068 useless extension candidates. Maximal degree in co-relation 4498. Up to 1553 conditions per place. [2024-11-08 18:29:58,326 INFO L140 encePairwiseOnDemand]: 105/123 looper letters, 82 selfloop transitions, 75 changer transitions 0/212 dead transitions. [2024-11-08 18:29:58,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 212 transitions, 1203 flow [2024-11-08 18:29:58,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 18:29:58,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-08 18:29:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1726 transitions. [2024-11-08 18:29:58,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5197229750075278 [2024-11-08 18:29:58,331 INFO L175 Difference]: Start difference. First operand has 126 places, 150 transitions, 627 flow. Second operand 27 states and 1726 transitions. [2024-11-08 18:29:58,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 212 transitions, 1203 flow [2024-11-08 18:29:58,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 212 transitions, 1171 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:29:58,338 INFO L231 Difference]: Finished difference. Result has 151 places, 186 transitions, 976 flow [2024-11-08 18:29:58,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=976, PETRI_PLACES=151, PETRI_TRANSITIONS=186} [2024-11-08 18:29:58,340 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 39 predicate places. [2024-11-08 18:29:58,340 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 186 transitions, 976 flow [2024-11-08 18:29:58,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 59.53333333333333) internal successors, (893), 15 states have internal predecessors, (893), 0 states have call successors, (0), 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 18:29:58,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:29:58,341 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 18:29:58,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 18:29:58,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 18:29:58,545 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:29:58,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:29:58,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2037253270, now seen corresponding path program 1 times [2024-11-08 18:29:58,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:29:58,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929953891] [2024-11-08 18:29:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:58,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:29:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:29:59,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:29:59,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929953891] [2024-11-08 18:29:59,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929953891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:29:59,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067140442] [2024-11-08 18:29:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:29:59,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:29:59,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:29:59,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:29:59,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:29:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:29:59,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 18:29:59,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:29:59,196 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 18:29:59,229 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 18:29:59,300 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 18:29:59,300 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 18:29:59,328 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 18:29:59,353 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 17 treesize of output 9 [2024-11-08 18:29:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:29:59,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:29:59,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:29:59,522 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 18:29:59,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:29:59,535 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 18:29:59,542 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 18:29:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:29:59,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067140442] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:29:59,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:29:59,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-08 18:29:59,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719075141] [2024-11-08 18:29:59,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:29:59,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 18:29:59,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:29:59,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 18:29:59,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2024-11-08 18:29:59,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 123 [2024-11-08 18:29:59,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 186 transitions, 976 flow. Second operand has 14 states, 14 states have (on average 48.714285714285715) internal successors, (682), 14 states have internal predecessors, (682), 0 states have call successors, (0), 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 18:29:59,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:29:59,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 123 [2024-11-08 18:29:59,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:30:00,821 INFO L124 PetriNetUnfolderBase]: 1267/2724 cut-off events. [2024-11-08 18:30:00,821 INFO L125 PetriNetUnfolderBase]: For 413/413 co-relation queries the response was YES. [2024-11-08 18:30:00,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4762 conditions, 2724 events. 1267/2724 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19928 event pairs, 826 based on Foata normal form. 0/2063 useless extension candidates. Maximal degree in co-relation 4652. Up to 1529 conditions per place. [2024-11-08 18:30:00,847 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 128 selfloop transitions, 30 changer transitions 0/197 dead transitions. [2024-11-08 18:30:00,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 197 transitions, 1316 flow [2024-11-08 18:30:00,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:30:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 18:30:00,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 598 transitions. [2024-11-08 18:30:00,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44198078344419806 [2024-11-08 18:30:00,850 INFO L175 Difference]: Start difference. First operand has 151 places, 186 transitions, 976 flow. Second operand 11 states and 598 transitions. [2024-11-08 18:30:00,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 197 transitions, 1316 flow [2024-11-08 18:30:00,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 197 transitions, 1120 flow, removed 49 selfloop flow, removed 11 redundant places. [2024-11-08 18:30:00,859 INFO L231 Difference]: Finished difference. Result has 149 places, 185 transitions, 838 flow [2024-11-08 18:30:00,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=838, PETRI_PLACES=149, PETRI_TRANSITIONS=185} [2024-11-08 18:30:00,863 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 37 predicate places. [2024-11-08 18:30:00,863 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 185 transitions, 838 flow [2024-11-08 18:30:00,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 48.714285714285715) internal successors, (682), 14 states have internal predecessors, (682), 0 states have call successors, (0), 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 18:30:00,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:30:00,865 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, 1] [2024-11-08 18:30:00,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:30:01,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 18:30:01,069 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:30:01,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:01,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1269727810, now seen corresponding path program 1 times [2024-11-08 18:30:01,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:01,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634174340] [2024-11-08 18:30:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:01,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:30:01,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:01,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634174340] [2024-11-08 18:30:01,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634174340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:01,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691065155] [2024-11-08 18:30:01,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:01,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:01,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:01,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:01,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:30:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:01,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 18:30:01,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:01,684 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 18:30:01,719 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 18:30:01,777 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 18:30:01,779 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 18:30:01,800 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 18:30:01,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 18:30:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:30:01,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:01,874 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_126 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_126) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2024-11-08 18:30:01,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:30:01,960 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 18:30:01,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:30:01,971 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 18:30:01,978 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 18:30:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-11-08 18:30:02,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691065155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:02,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:02,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-08 18:30:02,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114408833] [2024-11-08 18:30:02,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:02,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 18:30:02,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:02,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 18:30:02,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=124, Unknown=1, NotChecked=22, Total=182 [2024-11-08 18:30:02,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 123 [2024-11-08 18:30:02,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 185 transitions, 838 flow. Second operand has 14 states, 14 states have (on average 48.642857142857146) internal successors, (681), 14 states have internal predecessors, (681), 0 states have call successors, (0), 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 18:30:02,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:30:02,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 123 [2024-11-08 18:30:02,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:30:02,944 INFO L124 PetriNetUnfolderBase]: 1267/2723 cut-off events. [2024-11-08 18:30:02,944 INFO L125 PetriNetUnfolderBase]: For 260/260 co-relation queries the response was YES. [2024-11-08 18:30:02,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4695 conditions, 2723 events. 1267/2723 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19901 event pairs, 826 based on Foata normal form. 1/2064 useless extension candidates. Maximal degree in co-relation 4600. Up to 1533 conditions per place. [2024-11-08 18:30:02,970 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 121 selfloop transitions, 31 changer transitions 0/191 dead transitions. [2024-11-08 18:30:02,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 191 transitions, 1154 flow [2024-11-08 18:30:02,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:30:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 18:30:02,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 590 transitions. [2024-11-08 18:30:02,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4360679970436068 [2024-11-08 18:30:02,974 INFO L175 Difference]: Start difference. First operand has 149 places, 185 transitions, 838 flow. Second operand 11 states and 590 transitions. [2024-11-08 18:30:02,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 191 transitions, 1154 flow [2024-11-08 18:30:02,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 191 transitions, 1122 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 18:30:02,981 INFO L231 Difference]: Finished difference. Result has 154 places, 184 transitions, 864 flow [2024-11-08 18:30:02,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=864, PETRI_PLACES=154, PETRI_TRANSITIONS=184} [2024-11-08 18:30:02,982 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 42 predicate places. [2024-11-08 18:30:02,982 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 184 transitions, 864 flow [2024-11-08 18:30:02,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 48.642857142857146) internal successors, (681), 14 states have internal predecessors, (681), 0 states have call successors, (0), 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 18:30:02,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:30:02,983 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, 1, 1] [2024-11-08 18:30:03,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:30:03,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-08 18:30:03,188 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:30:03,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:03,188 INFO L85 PathProgramCache]: Analyzing trace with hash -706855353, now seen corresponding path program 1 times [2024-11-08 18:30:03,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:03,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867788048] [2024-11-08 18:30:03,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:03,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:03,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:30:03,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:03,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867788048] [2024-11-08 18:30:03,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867788048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:30:03,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:30:03,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:30:03,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318277178] [2024-11-08 18:30:03,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:30:03,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:30:03,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:03,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:30:03,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:30:03,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 123 [2024-11-08 18:30:03,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 184 transitions, 864 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 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 18:30:03,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:30:03,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 123 [2024-11-08 18:30:03,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:30:03,812 INFO L124 PetriNetUnfolderBase]: 1266/2721 cut-off events. [2024-11-08 18:30:03,812 INFO L125 PetriNetUnfolderBase]: For 402/402 co-relation queries the response was YES. [2024-11-08 18:30:03,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4634 conditions, 2721 events. 1266/2721 cut-off events. For 402/402 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19982 event pairs, 826 based on Foata normal form. 2/2063 useless extension candidates. Maximal degree in co-relation 4544. Up to 1581 conditions per place. [2024-11-08 18:30:03,838 INFO L140 encePairwiseOnDemand]: 114/123 looper letters, 97 selfloop transitions, 12 changer transitions 0/184 dead transitions. [2024-11-08 18:30:03,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 184 transitions, 1072 flow [2024-11-08 18:30:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:30:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:30:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2024-11-08 18:30:03,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-11-08 18:30:03,840 INFO L175 Difference]: Start difference. First operand has 154 places, 184 transitions, 864 flow. Second operand 4 states and 306 transitions. [2024-11-08 18:30:03,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 184 transitions, 1072 flow [2024-11-08 18:30:03,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 184 transitions, 1002 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-08 18:30:03,847 INFO L231 Difference]: Finished difference. Result has 146 places, 182 transitions, 804 flow [2024-11-08 18:30:03,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=804, PETRI_PLACES=146, PETRI_TRANSITIONS=182} [2024-11-08 18:30:03,848 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 34 predicate places. [2024-11-08 18:30:03,848 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 182 transitions, 804 flow [2024-11-08 18:30:03,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 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 18:30:03,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:30:03,848 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, 1, 1] [2024-11-08 18:30:03,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:30:03,849 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:30:03,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:03,849 INFO L85 PathProgramCache]: Analyzing trace with hash -706856486, now seen corresponding path program 1 times [2024-11-08 18:30:03,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:03,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143838961] [2024-11-08 18:30:03,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:03,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:04,489 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 18:30:04,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:04,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143838961] [2024-11-08 18:30:04,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143838961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:04,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075456897] [2024-11-08 18:30:04,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:04,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:04,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:04,494 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:04,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:30:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:04,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 18:30:04,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:04,625 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 18:30:04,654 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 18:30:04,709 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-08 18:30:04,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-08 18:30:04,743 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 18:30:04,790 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 18:30:04,791 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 18:30:04,869 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 25 treesize of output 13 [2024-11-08 18:30:04,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-08 18:30:05,045 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 18:30:05,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:05,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:30:05,528 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 47 treesize of output 36 [2024-11-08 18:30:05,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:30:05,547 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 235 treesize of output 231 [2024-11-08 18:30:05,570 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 162 treesize of output 154 [2024-11-08 18:30:05,682 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:30:05,683 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 139 treesize of output 133 [2024-11-08 18:30:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:06,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075456897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:06,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:06,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-08 18:30:06,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678330133] [2024-11-08 18:30:06,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:06,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:30:06,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:06,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:30:06,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=305, Unknown=1, NotChecked=0, Total=380 [2024-11-08 18:30:10,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:30:14,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:30:18,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:30:22,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:30:27,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:30:31,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:30:31,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 123 [2024-11-08 18:30:31,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 182 transitions, 804 flow. Second operand has 20 states, 20 states have (on average 44.3) internal successors, (886), 20 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:31,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:30:31,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 123 [2024-11-08 18:30:31,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:30:37,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 18:30:41,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 18:30:43,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 18:30:47,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 18:30:51,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 18:30:55,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 18:30:56,128 INFO L124 PetriNetUnfolderBase]: 2243/4255 cut-off events. [2024-11-08 18:30:56,129 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2024-11-08 18:30:56,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7571 conditions, 4255 events. 2243/4255 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 30093 event pairs, 710 based on Foata normal form. 0/3211 useless extension candidates. Maximal degree in co-relation 7477. Up to 1640 conditions per place. [2024-11-08 18:30:56,157 INFO L140 encePairwiseOnDemand]: 102/123 looper letters, 158 selfloop transitions, 39 changer transitions 0/232 dead transitions. [2024-11-08 18:30:56,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 232 transitions, 1332 flow [2024-11-08 18:30:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 18:30:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-08 18:30:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 893 transitions. [2024-11-08 18:30:56,161 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4033423667570009 [2024-11-08 18:30:56,161 INFO L175 Difference]: Start difference. First operand has 146 places, 182 transitions, 804 flow. Second operand 18 states and 893 transitions. [2024-11-08 18:30:56,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 232 transitions, 1332 flow [2024-11-08 18:30:56,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 232 transitions, 1306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:30:56,168 INFO L231 Difference]: Finished difference. Result has 164 places, 187 transitions, 905 flow [2024-11-08 18:30:56,168 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=905, PETRI_PLACES=164, PETRI_TRANSITIONS=187} [2024-11-08 18:30:56,169 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 52 predicate places. [2024-11-08 18:30:56,169 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 187 transitions, 905 flow [2024-11-08 18:30:56,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 44.3) internal successors, (886), 20 states have internal predecessors, (886), 0 states have call successors, (0), 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 18:30:56,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:30:56,170 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, 1, 1, 1] [2024-11-08 18:30:56,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 18:30:56,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 18:30:56,375 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:30:56,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:56,375 INFO L85 PathProgramCache]: Analyzing trace with hash -437713546, now seen corresponding path program 1 times [2024-11-08 18:30:56,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:56,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136462842] [2024-11-08 18:30:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:56,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:56,966 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 18:30:56,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:56,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136462842] [2024-11-08 18:30:56,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136462842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:56,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715994112] [2024-11-08 18:30:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:56,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:56,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:56,970 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:56,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:30:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:57,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 18:30:57,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:57,135 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 18:30:57,195 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 18:30:57,269 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-08 18:30:57,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-08 18:30:57,329 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 18:30:57,392 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 18:30:57,392 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 18:30:57,463 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 23 treesize of output 11 [2024-11-08 18:30:57,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-08 18:30:57,694 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 18:30:57,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:31:02,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:31:02,188 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 45 treesize of output 34 [2024-11-08 18:31:02,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:31:02,207 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 281 treesize of output 271 [2024-11-08 18:31:02,226 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 142 treesize of output 134 [2024-11-08 18:31:02,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:31:02,319 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 118 treesize of output 112 [2024-11-08 18:31:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:02,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715994112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:31:02,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:31:02,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-08 18:31:02,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009383640] [2024-11-08 18:31:02,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:31:02,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 18:31:02,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:02,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 18:31:02,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=495, Unknown=1, NotChecked=0, Total=600 [2024-11-08 18:31:06,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:31:11,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:31:15,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:31:19,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:31:23,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:31:25,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:31:29,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:31:29,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 123 [2024-11-08 18:31:29,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 187 transitions, 905 flow. Second operand has 25 states, 25 states have (on average 44.32) internal successors, (1108), 25 states have internal predecessors, (1108), 0 states have call successors, (0), 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 18:31:29,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:31:29,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 123 [2024-11-08 18:31:29,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:31:31,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 18:31:36,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 18:31:40,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 18:31:44,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 18:31:48,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 18:31:52,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 18:31:56,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 18:31:57,593 INFO L124 PetriNetUnfolderBase]: 2239/4178 cut-off events. [2024-11-08 18:31:57,593 INFO L125 PetriNetUnfolderBase]: For 521/521 co-relation queries the response was YES. [2024-11-08 18:31:57,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7851 conditions, 4178 events. 2239/4178 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 28852 event pairs, 624 based on Foata normal form. 5/3258 useless extension candidates. Maximal degree in co-relation 7786. Up to 1806 conditions per place. [2024-11-08 18:31:57,631 INFO L140 encePairwiseOnDemand]: 99/123 looper letters, 151 selfloop transitions, 44 changer transitions 2/233 dead transitions. [2024-11-08 18:31:57,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 233 transitions, 1444 flow [2024-11-08 18:31:57,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:31:57,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-08 18:31:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1013 transitions. [2024-11-08 18:31:57,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3921796360820751 [2024-11-08 18:31:57,636 INFO L175 Difference]: Start difference. First operand has 164 places, 187 transitions, 905 flow. Second operand 21 states and 1013 transitions. [2024-11-08 18:31:57,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 233 transitions, 1444 flow [2024-11-08 18:31:57,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 233 transitions, 1352 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-11-08 18:31:57,646 INFO L231 Difference]: Finished difference. Result has 177 places, 194 transitions, 967 flow [2024-11-08 18:31:57,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=967, PETRI_PLACES=177, PETRI_TRANSITIONS=194} [2024-11-08 18:31:57,647 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 65 predicate places. [2024-11-08 18:31:57,647 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 194 transitions, 967 flow [2024-11-08 18:31:57,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 44.32) internal successors, (1108), 25 states have internal predecessors, (1108), 0 states have call successors, (0), 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 18:31:57,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:57,648 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, 1, 1, 1, 1] [2024-11-08 18:31:57,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 18:31:57,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 18:31:57,853 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:31:57,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:57,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1424922212, now seen corresponding path program 1 times [2024-11-08 18:31:57,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:57,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753206324] [2024-11-08 18:31:57,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:57,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:31:57,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:31:57,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753206324] [2024-11-08 18:31:57,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753206324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:31:57,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:31:57,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:31:57,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873127144] [2024-11-08 18:31:57,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:31:57,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:31:57,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:57,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:31:57,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:31:57,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 123 [2024-11-08 18:31:58,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 194 transitions, 967 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 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 18:31:58,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:31:58,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 123 [2024-11-08 18:31:58,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:31:58,860 INFO L124 PetriNetUnfolderBase]: 2166/4535 cut-off events. [2024-11-08 18:31:58,861 INFO L125 PetriNetUnfolderBase]: For 1146/1146 co-relation queries the response was YES. [2024-11-08 18:31:58,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8244 conditions, 4535 events. 2166/4535 cut-off events. For 1146/1146 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 35500 event pairs, 1432 based on Foata normal form. 3/3505 useless extension candidates. Maximal degree in co-relation 8192. Up to 2691 conditions per place. [2024-11-08 18:31:58,900 INFO L140 encePairwiseOnDemand]: 114/123 looper letters, 103 selfloop transitions, 11 changer transitions 0/192 dead transitions. [2024-11-08 18:31:58,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 192 transitions, 1185 flow [2024-11-08 18:31:58,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:31:58,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:31:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2024-11-08 18:31:58,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6138211382113821 [2024-11-08 18:31:58,902 INFO L175 Difference]: Start difference. First operand has 177 places, 194 transitions, 967 flow. Second operand 4 states and 302 transitions. [2024-11-08 18:31:58,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 192 transitions, 1185 flow [2024-11-08 18:31:58,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 192 transitions, 1109 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-11-08 18:31:58,911 INFO L231 Difference]: Finished difference. Result has 166 places, 192 transitions, 903 flow [2024-11-08 18:31:58,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=903, PETRI_PLACES=166, PETRI_TRANSITIONS=192} [2024-11-08 18:31:58,913 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 54 predicate places. [2024-11-08 18:31:58,913 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 192 transitions, 903 flow [2024-11-08 18:31:58,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 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 18:31:58,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:58,914 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:31:58,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 18:31:58,915 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:31:58,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:58,915 INFO L85 PathProgramCache]: Analyzing trace with hash -141969092, now seen corresponding path program 1 times [2024-11-08 18:31:58,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:58,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965571737] [2024-11-08 18:31:58,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:58,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:59,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:31:59,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:31:59,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965571737] [2024-11-08 18:31:59,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965571737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:31:59,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:31:59,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:31:59,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785950027] [2024-11-08 18:31:59,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:31:59,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:31:59,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:59,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:31:59,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:31:59,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 123 [2024-11-08 18:31:59,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 192 transitions, 903 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 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 18:31:59,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:31:59,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 123 [2024-11-08 18:31:59,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:32:00,567 INFO L124 PetriNetUnfolderBase]: 4555/8372 cut-off events. [2024-11-08 18:32:00,567 INFO L125 PetriNetUnfolderBase]: For 1780/1780 co-relation queries the response was YES. [2024-11-08 18:32:00,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15514 conditions, 8372 events. 4555/8372 cut-off events. For 1780/1780 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 66167 event pairs, 2077 based on Foata normal form. 206/6657 useless extension candidates. Maximal degree in co-relation 15463. Up to 4178 conditions per place. [2024-11-08 18:32:00,653 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 152 selfloop transitions, 4 changer transitions 0/239 dead transitions. [2024-11-08 18:32:00,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 239 transitions, 1365 flow [2024-11-08 18:32:00,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:32:00,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:32:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2024-11-08 18:32:00,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7642276422764228 [2024-11-08 18:32:00,655 INFO L175 Difference]: Start difference. First operand has 166 places, 192 transitions, 903 flow. Second operand 4 states and 376 transitions. [2024-11-08 18:32:00,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 239 transitions, 1365 flow [2024-11-08 18:32:00,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 239 transitions, 1345 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-08 18:32:00,665 INFO L231 Difference]: Finished difference. Result has 167 places, 195 transitions, 912 flow [2024-11-08 18:32:00,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=912, PETRI_PLACES=167, PETRI_TRANSITIONS=195} [2024-11-08 18:32:00,666 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 55 predicate places. [2024-11-08 18:32:00,667 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 195 transitions, 912 flow [2024-11-08 18:32:00,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 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 18:32:00,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:00,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:32:00,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 18:32:00,668 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:32:00,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:00,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1911567757, now seen corresponding path program 1 times [2024-11-08 18:32:00,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:00,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143367638] [2024-11-08 18:32:00,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:00,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:32:00,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:00,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143367638] [2024-11-08 18:32:00,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143367638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:32:00,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:32:00,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:32:00,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605532939] [2024-11-08 18:32:00,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:32:00,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:32:00,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:00,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:32:00,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:32:00,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 123 [2024-11-08 18:32:00,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 195 transitions, 912 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 18:32:00,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:32:00,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 123 [2024-11-08 18:32:00,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:32:01,665 INFO L124 PetriNetUnfolderBase]: 3319/6194 cut-off events. [2024-11-08 18:32:01,665 INFO L125 PetriNetUnfolderBase]: For 3540/3900 co-relation queries the response was YES. [2024-11-08 18:32:01,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13141 conditions, 6194 events. 3319/6194 cut-off events. For 3540/3900 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 45432 event pairs, 1313 based on Foata normal form. 77/4966 useless extension candidates. Maximal degree in co-relation 13091. Up to 2654 conditions per place. [2024-11-08 18:32:01,725 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 126 selfloop transitions, 3 changer transitions 0/214 dead transitions. [2024-11-08 18:32:01,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 214 transitions, 1217 flow [2024-11-08 18:32:01,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:32:01,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:32:01,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2024-11-08 18:32:01,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-11-08 18:32:01,727 INFO L175 Difference]: Start difference. First operand has 167 places, 195 transitions, 912 flow. Second operand 3 states and 287 transitions. [2024-11-08 18:32:01,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 214 transitions, 1217 flow [2024-11-08 18:32:01,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 214 transitions, 1211 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:32:01,737 INFO L231 Difference]: Finished difference. Result has 169 places, 195 transitions, 910 flow [2024-11-08 18:32:01,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=910, PETRI_PLACES=169, PETRI_TRANSITIONS=195} [2024-11-08 18:32:01,738 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 57 predicate places. [2024-11-08 18:32:01,738 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 195 transitions, 910 flow [2024-11-08 18:32:01,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 18:32:01,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:01,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:32:01,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:32:01,739 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:32:01,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:01,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1911567752, now seen corresponding path program 1 times [2024-11-08 18:32:01,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:01,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628769442] [2024-11-08 18:32:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:01,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:32:02,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:02,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628769442] [2024-11-08 18:32:02,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628769442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:32:02,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399693135] [2024-11-08 18:32:02,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:02,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:02,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:32:02,042 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:32:02,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:32:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:02,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 18:32:02,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:32:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:32:02,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:32:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:32:02,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399693135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:32:02,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:32:02,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-08 18:32:02,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035970825] [2024-11-08 18:32:02,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:32:02,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:32:02,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:02,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:32:02,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:32:03,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 123 [2024-11-08 18:32:03,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 195 transitions, 910 flow. Second operand has 15 states, 15 states have (on average 56.666666666666664) internal successors, (850), 15 states have internal predecessors, (850), 0 states have call successors, (0), 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 18:32:03,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:32:03,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 123 [2024-11-08 18:32:03,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:32:05,086 INFO L124 PetriNetUnfolderBase]: 5340/9052 cut-off events. [2024-11-08 18:32:05,087 INFO L125 PetriNetUnfolderBase]: For 4559/5174 co-relation queries the response was YES. [2024-11-08 18:32:05,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20626 conditions, 9052 events. 5340/9052 cut-off events. For 4559/5174 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 59784 event pairs, 3308 based on Foata normal form. 0/7618 useless extension candidates. Maximal degree in co-relation 20569. Up to 5370 conditions per place. [2024-11-08 18:32:05,197 INFO L140 encePairwiseOnDemand]: 99/123 looper letters, 206 selfloop transitions, 101 changer transitions 0/356 dead transitions. [2024-11-08 18:32:05,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 356 transitions, 2266 flow [2024-11-08 18:32:05,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:32:05,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 18:32:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 879 transitions. [2024-11-08 18:32:05,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.549718574108818 [2024-11-08 18:32:05,201 INFO L175 Difference]: Start difference. First operand has 169 places, 195 transitions, 910 flow. Second operand 13 states and 879 transitions. [2024-11-08 18:32:05,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 356 transitions, 2266 flow [2024-11-08 18:32:05,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 356 transitions, 2261 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:32:05,219 INFO L231 Difference]: Finished difference. Result has 186 places, 254 transitions, 1606 flow [2024-11-08 18:32:05,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1606, PETRI_PLACES=186, PETRI_TRANSITIONS=254} [2024-11-08 18:32:05,220 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 74 predicate places. [2024-11-08 18:32:05,220 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 254 transitions, 1606 flow [2024-11-08 18:32:05,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 56.666666666666664) internal successors, (850), 15 states have internal predecessors, (850), 0 states have call successors, (0), 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 18:32:05,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:05,222 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:05,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 18:32:05,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 18:32:05,427 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:32:05,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:05,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1063487991, now seen corresponding path program 1 times [2024-11-08 18:32:05,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:05,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435913228] [2024-11-08 18:32:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:05,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:32:05,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:05,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435913228] [2024-11-08 18:32:05,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435913228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:32:05,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049625581] [2024-11-08 18:32:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:05,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:05,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:32:05,662 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:32:05,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:32:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:05,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 18:32:05,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:32:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:32:05,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:32:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:32:06,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049625581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:32:06,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:32:06,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-08 18:32:06,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145188068] [2024-11-08 18:32:06,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:32:06,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:32:06,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:06,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:32:06,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:32:06,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 123 [2024-11-08 18:32:06,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 254 transitions, 1606 flow. Second operand has 15 states, 15 states have (on average 57.6) internal successors, (864), 15 states have internal predecessors, (864), 0 states have call successors, (0), 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 18:32:06,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:32:06,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 123 [2024-11-08 18:32:06,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:32:08,898 INFO L124 PetriNetUnfolderBase]: 5874/11369 cut-off events. [2024-11-08 18:32:08,898 INFO L125 PetriNetUnfolderBase]: For 5853/5921 co-relation queries the response was YES. [2024-11-08 18:32:08,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23728 conditions, 11369 events. 5874/11369 cut-off events. For 5853/5921 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 95860 event pairs, 3059 based on Foata normal form. 0/9010 useless extension candidates. Maximal degree in co-relation 23666. Up to 5287 conditions per place. [2024-11-08 18:32:09,017 INFO L140 encePairwiseOnDemand]: 99/123 looper letters, 203 selfloop transitions, 101 changer transitions 0/355 dead transitions. [2024-11-08 18:32:09,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 355 transitions, 2690 flow [2024-11-08 18:32:09,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:32:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 18:32:09,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 895 transitions. [2024-11-08 18:32:09,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5597248280175109 [2024-11-08 18:32:09,020 INFO L175 Difference]: Start difference. First operand has 186 places, 254 transitions, 1606 flow. Second operand 13 states and 895 transitions. [2024-11-08 18:32:09,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 355 transitions, 2690 flow [2024-11-08 18:32:09,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 355 transitions, 2680 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-08 18:32:09,046 INFO L231 Difference]: Finished difference. Result has 201 places, 257 transitions, 1896 flow [2024-11-08 18:32:09,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1896, PETRI_PLACES=201, PETRI_TRANSITIONS=257} [2024-11-08 18:32:09,047 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 89 predicate places. [2024-11-08 18:32:09,047 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 257 transitions, 1896 flow [2024-11-08 18:32:09,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 57.6) internal successors, (864), 15 states have internal predecessors, (864), 0 states have call successors, (0), 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 18:32:09,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:09,048 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:32:09,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 18:32:09,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 18:32:09,253 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:32:09,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:09,254 INFO L85 PathProgramCache]: Analyzing trace with hash 765322222, now seen corresponding path program 1 times [2024-11-08 18:32:09,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:09,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260411776] [2024-11-08 18:32:09,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:09,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-08 18:32:09,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:09,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260411776] [2024-11-08 18:32:09,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260411776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:32:09,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98921784] [2024-11-08 18:32:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:09,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:09,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:32:09,603 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:32:09,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 18:32:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:09,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 18:32:09,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:32:09,918 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-08 18:32:09,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:32:10,092 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-08 18:32:10,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98921784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:32:10,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:32:10,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-08 18:32:10,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145175349] [2024-11-08 18:32:10,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:32:10,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:32:10,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:10,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:32:10,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:32:10,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 123 [2024-11-08 18:32:10,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 257 transitions, 1896 flow. Second operand has 20 states, 20 states have (on average 59.65) internal successors, (1193), 20 states have internal predecessors, (1193), 0 states have call successors, (0), 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 18:32:10,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:32:10,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 123 [2024-11-08 18:32:10,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:32:12,452 INFO L124 PetriNetUnfolderBase]: 3477/7290 cut-off events. [2024-11-08 18:32:12,453 INFO L125 PetriNetUnfolderBase]: For 7047/7386 co-relation queries the response was YES. [2024-11-08 18:32:12,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15845 conditions, 7290 events. 3477/7290 cut-off events. For 7047/7386 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 59396 event pairs, 2330 based on Foata normal form. 2/5787 useless extension candidates. Maximal degree in co-relation 15780. Up to 3955 conditions per place. [2024-11-08 18:32:12,638 INFO L140 encePairwiseOnDemand]: 104/123 looper letters, 113 selfloop transitions, 94 changer transitions 0/262 dead transitions. [2024-11-08 18:32:12,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 262 transitions, 2146 flow [2024-11-08 18:32:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:32:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 18:32:12,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 881 transitions. [2024-11-08 18:32:12,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5509693558474046 [2024-11-08 18:32:12,641 INFO L175 Difference]: Start difference. First operand has 201 places, 257 transitions, 1896 flow. Second operand 13 states and 881 transitions. [2024-11-08 18:32:12,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 262 transitions, 2146 flow [2024-11-08 18:32:12,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 262 transitions, 1993 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-11-08 18:32:12,661 INFO L231 Difference]: Finished difference. Result has 203 places, 228 transitions, 1635 flow [2024-11-08 18:32:12,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1635, PETRI_PLACES=203, PETRI_TRANSITIONS=228} [2024-11-08 18:32:12,662 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 91 predicate places. [2024-11-08 18:32:12,662 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 228 transitions, 1635 flow [2024-11-08 18:32:12,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 59.65) internal successors, (1193), 20 states have internal predecessors, (1193), 0 states have call successors, (0), 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 18:32:12,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:12,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:32:12,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 18:32:12,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 18:32:12,863 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:32:12,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:12,864 INFO L85 PathProgramCache]: Analyzing trace with hash 166960419, now seen corresponding path program 1 times [2024-11-08 18:32:12,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:12,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364983662] [2024-11-08 18:32:12,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:12,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:32:12,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:12,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364983662] [2024-11-08 18:32:12,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364983662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:32:12,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:32:12,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:32:12,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4528963] [2024-11-08 18:32:12,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:32:12,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:32:12,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:12,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:32:12,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:32:12,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 123 [2024-11-08 18:32:12,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 228 transitions, 1635 flow. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 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 18:32:12,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:32:12,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 123 [2024-11-08 18:32:12,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:32:15,430 INFO L124 PetriNetUnfolderBase]: 8015/14361 cut-off events. [2024-11-08 18:32:15,431 INFO L125 PetriNetUnfolderBase]: For 15344/16110 co-relation queries the response was YES. [2024-11-08 18:32:15,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34245 conditions, 14361 events. 8015/14361 cut-off events. For 15344/16110 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 112272 event pairs, 3923 based on Foata normal form. 245/12198 useless extension candidates. Maximal degree in co-relation 34147. Up to 6901 conditions per place. [2024-11-08 18:32:15,675 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 202 selfloop transitions, 3 changer transitions 0/296 dead transitions. [2024-11-08 18:32:15,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 296 transitions, 2369 flow [2024-11-08 18:32:15,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:32:15,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:32:15,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2024-11-08 18:32:15,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7642276422764228 [2024-11-08 18:32:15,677 INFO L175 Difference]: Start difference. First operand has 203 places, 228 transitions, 1635 flow. Second operand 4 states and 376 transitions. [2024-11-08 18:32:15,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 296 transitions, 2369 flow [2024-11-08 18:32:15,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 296 transitions, 2271 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-11-08 18:32:15,733 INFO L231 Difference]: Finished difference. Result has 200 places, 230 transitions, 1559 flow [2024-11-08 18:32:15,736 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1559, PETRI_PLACES=200, PETRI_TRANSITIONS=230} [2024-11-08 18:32:15,737 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 88 predicate places. [2024-11-08 18:32:15,737 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 230 transitions, 1559 flow [2024-11-08 18:32:15,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 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 18:32:15,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:15,738 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 6, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-08 18:32:15,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 18:32:15,738 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:32:15,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:15,739 INFO L85 PathProgramCache]: Analyzing trace with hash 780121462, now seen corresponding path program 2 times [2024-11-08 18:32:15,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:15,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528453032] [2024-11-08 18:32:15,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:15,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 63 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:32:16,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:16,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528453032] [2024-11-08 18:32:16,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528453032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:32:16,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140952699] [2024-11-08 18:32:16,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:32:16,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:16,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:32:16,427 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:32:16,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 18:32:16,545 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 18:32:16,546 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:32:16,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:32:16,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:32:16,728 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-08 18:32:16,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:32:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-08 18:32:16,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140952699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:32:16,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:32:16,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 4, 4] total 24 [2024-11-08 18:32:16,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576886605] [2024-11-08 18:32:16,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:32:16,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 18:32:16,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:16,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 18:32:16,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2024-11-08 18:32:17,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 123 [2024-11-08 18:32:17,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 230 transitions, 1559 flow. Second operand has 25 states, 25 states have (on average 59.68) internal successors, (1492), 25 states have internal predecessors, (1492), 0 states have call successors, (0), 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 18:32:17,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:32:17,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 123 [2024-11-08 18:32:17,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:32:21,931 INFO L124 PetriNetUnfolderBase]: 10422/18779 cut-off events. [2024-11-08 18:32:21,931 INFO L125 PetriNetUnfolderBase]: For 22259/23983 co-relation queries the response was YES. [2024-11-08 18:32:22,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48246 conditions, 18779 events. 10422/18779 cut-off events. For 22259/23983 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 153345 event pairs, 7846 based on Foata normal form. 245/15829 useless extension candidates. Maximal degree in co-relation 48108. Up to 6856 conditions per place. [2024-11-08 18:32:22,242 INFO L140 encePairwiseOnDemand]: 102/123 looper letters, 128 selfloop transitions, 140 changer transitions 0/324 dead transitions. [2024-11-08 18:32:22,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 324 transitions, 2640 flow [2024-11-08 18:32:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 18:32:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-08 18:32:22,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1624 transitions. [2024-11-08 18:32:22,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.528130081300813 [2024-11-08 18:32:22,245 INFO L175 Difference]: Start difference. First operand has 200 places, 230 transitions, 1559 flow. Second operand 25 states and 1624 transitions. [2024-11-08 18:32:22,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 324 transitions, 2640 flow [2024-11-08 18:32:22,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 324 transitions, 2580 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-08 18:32:22,340 INFO L231 Difference]: Finished difference. Result has 216 places, 259 transitions, 2022 flow [2024-11-08 18:32:22,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2022, PETRI_PLACES=216, PETRI_TRANSITIONS=259} [2024-11-08 18:32:22,341 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 104 predicate places. [2024-11-08 18:32:22,341 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 259 transitions, 2022 flow [2024-11-08 18:32:22,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 59.68) internal successors, (1492), 25 states have internal predecessors, (1492), 0 states have call successors, (0), 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 18:32:22,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:22,342 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:32:22,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 18:32:22,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:22,550 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:32:22,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:22,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1613234993, now seen corresponding path program 1 times [2024-11-08 18:32:22,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:22,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786976860] [2024-11-08 18:32:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:22,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:32:23,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:23,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786976860] [2024-11-08 18:32:23,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786976860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:32:23,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502786034] [2024-11-08 18:32:23,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:23,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:23,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:32:23,591 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:32:23,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 18:32:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:23,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 18:32:23,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:32:23,751 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 18:32:23,899 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 18:32:24,046 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 18:32:24,047 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 18:32:24,083 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 18:32:24,129 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 18:32:24,230 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-08 18:32:24,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2024-11-08 18:32:24,368 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-08 18:32:24,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-08 18:32:24,505 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:32:24,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:32:24,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:32:24,741 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2024-11-08 18:32:24,751 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| Int) (v_arrayElimArr_5 (Array Int Int))) (or (< 0 (+ (select (select (store |c_#memory_int#1| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_arrayElimArr_5) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483649)) (< (+ (select v_arrayElimArr_5 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~3#1|) 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483648) 0))) is different from false [2024-11-08 18:32:24,887 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_5 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_224| Int) (v_ArrVal_419 (Array Int Int))) (or (< (+ (select v_arrayElimArr_5 4) 2147483648) 0) (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_419) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_224| v_arrayElimArr_5) c_~A~0.base) (+ c_~A~0.offset 4)))))) is different from false [2024-11-08 18:32:25,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:32:25,091 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 29 treesize of output 30 [2024-11-08 18:32:25,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:32:25,108 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 159 treesize of output 147 [2024-11-08 18:32:25,118 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 29 treesize of output 25 [2024-11-08 18:32:25,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:32:25,131 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 40 treesize of output 38 [2024-11-08 18:32:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 7 not checked. [2024-11-08 18:32:25,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502786034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:32:25,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:32:25,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 29 [2024-11-08 18:32:25,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935397915] [2024-11-08 18:32:25,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:32:25,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 18:32:25,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:25,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 18:32:25,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=696, Unknown=16, NotChecked=110, Total=930 [2024-11-08 18:32:25,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 123 [2024-11-08 18:32:25,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 259 transitions, 2022 flow. Second operand has 31 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 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 18:32:25,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:32:25,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 123 [2024-11-08 18:32:25,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:32:31,387 INFO L124 PetriNetUnfolderBase]: 14810/23930 cut-off events. [2024-11-08 18:32:31,387 INFO L125 PetriNetUnfolderBase]: For 26167/29110 co-relation queries the response was YES. [2024-11-08 18:32:31,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64921 conditions, 23930 events. 14810/23930 cut-off events. For 26167/29110 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 176343 event pairs, 6522 based on Foata normal form. 554/21389 useless extension candidates. Maximal degree in co-relation 64748. Up to 11372 conditions per place. [2024-11-08 18:32:31,607 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 230 selfloop transitions, 77 changer transitions 0/354 dead transitions. [2024-11-08 18:32:31,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 354 transitions, 3065 flow [2024-11-08 18:32:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:32:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 18:32:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 923 transitions. [2024-11-08 18:32:31,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5002710027100271 [2024-11-08 18:32:31,609 INFO L175 Difference]: Start difference. First operand has 216 places, 259 transitions, 2022 flow. Second operand 15 states and 923 transitions. [2024-11-08 18:32:31,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 354 transitions, 3065 flow [2024-11-08 18:32:31,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 354 transitions, 2867 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-08 18:32:31,717 INFO L231 Difference]: Finished difference. Result has 226 places, 266 transitions, 2074 flow [2024-11-08 18:32:31,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1829, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2074, PETRI_PLACES=226, PETRI_TRANSITIONS=266} [2024-11-08 18:32:31,718 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 114 predicate places. [2024-11-08 18:32:31,718 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 266 transitions, 2074 flow [2024-11-08 18:32:31,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 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 18:32:31,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:31,719 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:32:31,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 18:32:31,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-08 18:32:31,924 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:32:31,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:31,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1613234994, now seen corresponding path program 1 times [2024-11-08 18:32:31,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:31,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168614908] [2024-11-08 18:32:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:31,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:32:33,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:33,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168614908] [2024-11-08 18:32:33,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168614908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:32:33,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96654182] [2024-11-08 18:32:33,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:33,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:33,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:32:33,037 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:32:33,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 18:32:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:33,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 18:32:33,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:32:33,228 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 18:32:33,379 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 18:32:33,460 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 18:32:33,460 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 18:32:33,509 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 18:32:33,556 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 18:32:33,703 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-08 18:32:33,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-08 18:32:33,892 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-08 18:32:33,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-11-08 18:32:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:32:34,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:32:34,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:32:34,334 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2024-11-08 18:32:34,342 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| Int) (v_arrayElimArr_7 (Array Int Int))) (or (< 2147483647 (select v_arrayElimArr_7 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~3#1|) 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (< (select (select (store |c_#memory_int#1| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_arrayElimArr_7) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648))) is different from false [2024-11-08 18:32:34,490 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_228| Int) (v_arrayElimArr_7 (Array Int Int)) (v_ArrVal_463 (Array Int Int))) (or (< (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_463) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_228| v_arrayElimArr_7) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648) (< 2147483647 (select v_arrayElimArr_7 4)))) is different from false [2024-11-08 18:32:34,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:32:34,671 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 27 treesize of output 28 [2024-11-08 18:32:34,683 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:32:34,684 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 141 treesize of output 129 [2024-11-08 18:32:34,697 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 25 treesize of output 21 [2024-11-08 18:32:34,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:32:34,715 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 34 treesize of output 32 [2024-11-08 18:32:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 7 not checked. [2024-11-08 18:32:35,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96654182] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:32:35,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:32:35,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 29 [2024-11-08 18:32:35,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529985981] [2024-11-08 18:32:35,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:32:35,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 18:32:35,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:35,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 18:32:35,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=697, Unknown=15, NotChecked=110, Total=930 [2024-11-08 18:32:35,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 123 [2024-11-08 18:32:35,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 266 transitions, 2074 flow. Second operand has 31 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 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 18:32:35,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:32:35,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 123 [2024-11-08 18:32:35,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:32:40,614 INFO L124 PetriNetUnfolderBase]: 14086/22226 cut-off events. [2024-11-08 18:32:40,614 INFO L125 PetriNetUnfolderBase]: For 30288/33348 co-relation queries the response was YES. [2024-11-08 18:32:40,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64277 conditions, 22226 events. 14086/22226 cut-off events. For 30288/33348 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 162742 event pairs, 6704 based on Foata normal form. 809/21498 useless extension candidates. Maximal degree in co-relation 64102. Up to 11372 conditions per place. [2024-11-08 18:32:40,979 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 229 selfloop transitions, 77 changer transitions 0/353 dead transitions. [2024-11-08 18:32:40,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 353 transitions, 3046 flow [2024-11-08 18:32:40,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:32:40,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 18:32:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 922 transitions. [2024-11-08 18:32:40,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4997289972899729 [2024-11-08 18:32:40,982 INFO L175 Difference]: Start difference. First operand has 226 places, 266 transitions, 2074 flow. Second operand 15 states and 922 transitions. [2024-11-08 18:32:40,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 353 transitions, 3046 flow [2024-11-08 18:32:41,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 353 transitions, 3005 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 18:32:41,070 INFO L231 Difference]: Finished difference. Result has 235 places, 265 transitions, 2183 flow [2024-11-08 18:32:41,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=2029, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2183, PETRI_PLACES=235, PETRI_TRANSITIONS=265} [2024-11-08 18:32:41,071 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 123 predicate places. [2024-11-08 18:32:41,071 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 265 transitions, 2183 flow [2024-11-08 18:32:41,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 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 18:32:41,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:41,072 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:32:41,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 18:32:41,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 18:32:41,277 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:32:41,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:41,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1613234990, now seen corresponding path program 2 times [2024-11-08 18:32:41,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:41,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809581049] [2024-11-08 18:32:41,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:41,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:32:42,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:42,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809581049] [2024-11-08 18:32:42,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809581049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:32:42,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895447645] [2024-11-08 18:32:42,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:32:42,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:42,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:32:42,231 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:32:42,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 18:32:42,387 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:32:42,387 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:32:42,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-08 18:32:42,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:32:42,443 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 18:32:42,616 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 18:32:42,690 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 18:32:42,690 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 18:32:42,714 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 18:32:42,766 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 18:32:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:32:42,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:32:43,025 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_506 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_506) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2024-11-08 18:32:43,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:32:43,126 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 18:32:43,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:32:43,136 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 43 treesize of output 37 [2024-11-08 18:32:43,141 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 9 [2024-11-08 18:32:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 4 not checked. [2024-11-08 18:32:43,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895447645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:32:43,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:32:43,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 8] total 27 [2024-11-08 18:32:43,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891543217] [2024-11-08 18:32:43,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:32:43,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 18:32:43,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:43,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 18:32:43,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=630, Unknown=1, NotChecked=50, Total=756 [2024-11-08 18:32:43,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 123 [2024-11-08 18:32:43,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 265 transitions, 2183 flow. Second operand has 28 states, 28 states have (on average 46.25) internal successors, (1295), 28 states have internal predecessors, (1295), 0 states have call successors, (0), 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 18:32:43,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:32:43,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 123 [2024-11-08 18:32:43,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:32:56,456 INFO L124 PetriNetUnfolderBase]: 43064/65486 cut-off events. [2024-11-08 18:32:56,456 INFO L125 PetriNetUnfolderBase]: For 81716/85501 co-relation queries the response was YES. [2024-11-08 18:32:56,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186506 conditions, 65486 events. 43064/65486 cut-off events. For 81716/85501 co-relation queries the response was YES. Maximal size of possible extension queue 1161. Compared 456502 event pairs, 13028 based on Foata normal form. 685/58590 useless extension candidates. Maximal degree in co-relation 186319. Up to 11950 conditions per place. [2024-11-08 18:32:57,250 INFO L140 encePairwiseOnDemand]: 95/123 looper letters, 377 selfloop transitions, 134 changer transitions 0/550 dead transitions. [2024-11-08 18:32:57,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 550 transitions, 4391 flow [2024-11-08 18:32:57,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 18:32:57,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-08 18:32:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1959 transitions. [2024-11-08 18:32:57,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43045484508899146 [2024-11-08 18:32:57,256 INFO L175 Difference]: Start difference. First operand has 235 places, 265 transitions, 2183 flow. Second operand 37 states and 1959 transitions. [2024-11-08 18:32:57,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 550 transitions, 4391 flow [2024-11-08 18:32:57,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 550 transitions, 4246 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-08 18:32:57,816 INFO L231 Difference]: Finished difference. Result has 263 places, 282 transitions, 2495 flow [2024-11-08 18:32:57,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=2046, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2495, PETRI_PLACES=263, PETRI_TRANSITIONS=282} [2024-11-08 18:32:57,817 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 151 predicate places. [2024-11-08 18:32:57,817 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 282 transitions, 2495 flow [2024-11-08 18:32:57,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 46.25) internal successors, (1295), 28 states have internal predecessors, (1295), 0 states have call successors, (0), 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 18:32:57,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:57,818 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:32:57,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 18:32:58,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 18:32:58,019 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:32:58,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:58,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1613234991, now seen corresponding path program 1 times [2024-11-08 18:32:58,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:58,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836703929] [2024-11-08 18:32:58,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:58,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:58,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:32:58,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:58,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836703929] [2024-11-08 18:32:58,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836703929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:32:58,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24586711] [2024-11-08 18:32:58,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:58,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:58,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:32:58,974 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:32:58,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 18:32:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:59,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 18:32:59,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:32:59,162 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 18:32:59,281 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 19 treesize of output 1 [2024-11-08 18:32:59,346 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 18:32:59,347 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 18:32:59,396 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 18:32:59,429 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 18:32:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:32:59,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:32:59,685 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_547 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_547) c_~B~0.base) (+ 4 c_~B~0.offset)) 4294967296)) is different from false [2024-11-08 18:32:59,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:32:59,795 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 18:32:59,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:32:59,805 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 37 treesize of output 31 [2024-11-08 18:32:59,813 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 7 [2024-11-08 18:32:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 4 not checked. [2024-11-08 18:32:59,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24586711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:32:59,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:32:59,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 25 [2024-11-08 18:32:59,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458263821] [2024-11-08 18:32:59,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:32:59,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 18:32:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:59,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 18:32:59,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=522, Unknown=1, NotChecked=46, Total=650 [2024-11-08 18:33:00,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 123 [2024-11-08 18:33:00,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 282 transitions, 2495 flow. Second operand has 26 states, 26 states have (on average 53.96153846153846) internal successors, (1403), 26 states have internal predecessors, (1403), 0 states have call successors, (0), 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 18:33:00,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:33:00,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 123 [2024-11-08 18:33:00,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:33:05,285 INFO L124 PetriNetUnfolderBase]: 13650/22525 cut-off events. [2024-11-08 18:33:05,286 INFO L125 PetriNetUnfolderBase]: For 43690/46289 co-relation queries the response was YES. [2024-11-08 18:33:05,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70473 conditions, 22525 events. 13650/22525 cut-off events. For 43690/46289 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 166710 event pairs, 4360 based on Foata normal form. 686/20951 useless extension candidates. Maximal degree in co-relation 70282. Up to 6968 conditions per place. [2024-11-08 18:33:05,513 INFO L140 encePairwiseOnDemand]: 103/123 looper letters, 224 selfloop transitions, 93 changer transitions 0/364 dead transitions. [2024-11-08 18:33:05,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 364 transitions, 3475 flow [2024-11-08 18:33:05,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:33:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 18:33:05,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 914 transitions. [2024-11-08 18:33:05,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4953929539295393 [2024-11-08 18:33:05,516 INFO L175 Difference]: Start difference. First operand has 263 places, 282 transitions, 2495 flow. Second operand 15 states and 914 transitions. [2024-11-08 18:33:05,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 364 transitions, 3475 flow [2024-11-08 18:33:05,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 364 transitions, 3320 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-11-08 18:33:05,661 INFO L231 Difference]: Finished difference. Result has 267 places, 281 transitions, 2520 flow [2024-11-08 18:33:05,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2520, PETRI_PLACES=267, PETRI_TRANSITIONS=281} [2024-11-08 18:33:05,662 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 155 predicate places. [2024-11-08 18:33:05,662 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 281 transitions, 2520 flow [2024-11-08 18:33:05,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 53.96153846153846) internal successors, (1403), 26 states have internal predecessors, (1403), 0 states have call successors, (0), 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 18:33:05,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:33:05,663 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:33:05,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 18:33:05,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:33:05,864 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:33:05,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:33:05,865 INFO L85 PathProgramCache]: Analyzing trace with hash -164326154, now seen corresponding path program 1 times [2024-11-08 18:33:05,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:33:05,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098163156] [2024-11-08 18:33:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:33:05,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:33:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:33:05,995 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 18:33:05,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:33:05,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098163156] [2024-11-08 18:33:05,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098163156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:33:05,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:33:05,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:33:05,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778089375] [2024-11-08 18:33:05,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:33:05,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:33:05,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:33:05,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:33:05,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:33:06,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 123 [2024-11-08 18:33:06,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 281 transitions, 2520 flow. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 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 18:33:06,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:33:06,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 123 [2024-11-08 18:33:06,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:33:09,316 INFO L124 PetriNetUnfolderBase]: 10840/18305 cut-off events. [2024-11-08 18:33:09,316 INFO L125 PetriNetUnfolderBase]: For 48996/51344 co-relation queries the response was YES. [2024-11-08 18:33:09,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60425 conditions, 18305 events. 10840/18305 cut-off events. For 48996/51344 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 139068 event pairs, 6660 based on Foata normal form. 875/18552 useless extension candidates. Maximal degree in co-relation 60238. Up to 11931 conditions per place. [2024-11-08 18:33:09,495 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 195 selfloop transitions, 13 changer transitions 0/316 dead transitions. [2024-11-08 18:33:09,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 316 transitions, 3082 flow [2024-11-08 18:33:09,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:33:09,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:33:09,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2024-11-08 18:33:09,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7317073170731707 [2024-11-08 18:33:09,496 INFO L175 Difference]: Start difference. First operand has 267 places, 281 transitions, 2520 flow. Second operand 4 states and 360 transitions. [2024-11-08 18:33:09,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 316 transitions, 3082 flow [2024-11-08 18:33:09,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 316 transitions, 2927 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-08 18:33:09,626 INFO L231 Difference]: Finished difference. Result has 259 places, 282 transitions, 2413 flow [2024-11-08 18:33:09,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2413, PETRI_PLACES=259, PETRI_TRANSITIONS=282} [2024-11-08 18:33:09,627 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 147 predicate places. [2024-11-08 18:33:09,627 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 282 transitions, 2413 flow [2024-11-08 18:33:09,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 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 18:33:09,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:33:09,628 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:33:09,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 18:33:09,628 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 18:33:09,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:33:09,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2128512541, now seen corresponding path program 2 times [2024-11-08 18:33:09,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:33:09,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704259418] [2024-11-08 18:33:09,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:33:09,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:33:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:33:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 18:33:09,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:33:09,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704259418] [2024-11-08 18:33:09,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704259418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:33:09,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584448035] [2024-11-08 18:33:09,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:33:09,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:33:09,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:33:09,754 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:33:09,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2ee34a-3fe7-4234-9b2f-d4f2afd5ff67/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 18:33:09,917 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:33:09,917 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:33:09,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:33:09,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:33:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 18:33:09,950 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:33:09,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584448035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:33:09,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:33:09,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 18:33:09,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041829693] [2024-11-08 18:33:09,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:33:09,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:33:09,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:33:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:33:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:33:09,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 123 [2024-11-08 18:33:09,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 282 transitions, 2413 flow. Second operand has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 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 18:33:09,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:33:09,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 123 [2024-11-08 18:33:09,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand