./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU --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 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:08:07,359 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:08:07,445 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:08:07,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:08:07,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:08:07,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:08:07,473 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:08:07,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:08:07,474 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:08:07,475 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:08:07,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:08:07,477 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:08:07,478 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:08:07,480 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:08:07,480 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:08:07,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:08:07,481 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:08:07,481 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:08:07,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:08:07,486 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:08:07,486 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:08:07,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:08:07,487 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:08:07,487 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:08:07,488 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:08:07,488 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:08:07,488 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:08:07,489 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:08:07,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:08:07,489 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:08:07,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:08:07,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:08:07,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:08:07,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:08:07,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:08:07,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:08:07,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:08:07,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:08:07,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:08:07,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:08:07,492 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:08:07,494 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:08:07,494 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:08:07,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:08:07,495 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_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 [2024-10-31 22:08:07,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:08:07,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:08:07,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:08:07,838 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:08:07,839 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:08:07,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c Unable to find full path for "g++" [2024-10-31 22:08:09,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:08:10,110 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:08:10,110 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-10-31 22:08:10,121 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/data/53219ee12/51de5e0dd7a2404fb6cece10beded533/FLAG87985188f [2024-10-31 22:08:10,138 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/data/53219ee12/51de5e0dd7a2404fb6cece10beded533 [2024-10-31 22:08:10,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:08:10,142 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:08:10,144 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:08:10,144 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:08:10,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:08:10,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:08:10" (1/1) ... [2024-10-31 22:08:10,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd2ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10, skipping insertion in model container [2024-10-31 22:08:10,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:08:10" (1/1) ... [2024-10-31 22:08:10,180 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:08:10,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:08:10,466 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:08:10,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:08:10,515 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:08:10,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10 WrapperNode [2024-10-31 22:08:10,516 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:08:10,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:08:10,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:08:10,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:08:10,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10" (1/1) ... [2024-10-31 22:08:10,537 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10" (1/1) ... [2024-10-31 22:08:10,572 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 332 [2024-10-31 22:08:10,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:08:10,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:08:10,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:08:10,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:08:10,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10" (1/1) ... [2024-10-31 22:08:10,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10" (1/1) ... [2024-10-31 22:08:10,589 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10" (1/1) ... [2024-10-31 22:08:10,607 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-31 22:08:10,608 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10" (1/1) ... [2024-10-31 22:08:10,608 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10" (1/1) ... [2024-10-31 22:08:10,617 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10" (1/1) ... [2024-10-31 22:08:10,622 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10" (1/1) ... [2024-10-31 22:08:10,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10" (1/1) ... [2024-10-31 22:08:10,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10" (1/1) ... [2024-10-31 22:08:10,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:08:10,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:08:10,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:08:10,632 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:08:10,633 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10" (1/1) ... [2024-10-31 22:08:10,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:08:10,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:08:10,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:08:10,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:08:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:08:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:08:10,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:08:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:08:10,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:08:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:08:10,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:08:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:08:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:08:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:08:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:08:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:08:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:08:10,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:08:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:08:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:08:10,717 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:08:10,870 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:08:10,873 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:08:11,555 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:08:11,555 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:08:12,020 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:08:12,020 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-31 22:08:12,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:08:12 BoogieIcfgContainer [2024-10-31 22:08:12,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:08:12,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:08:12,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:08:12,027 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:08:12,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:08:10" (1/3) ... [2024-10-31 22:08:12,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60db1fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:08:12, skipping insertion in model container [2024-10-31 22:08:12,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:10" (2/3) ... [2024-10-31 22:08:12,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60db1fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:08:12, skipping insertion in model container [2024-10-31 22:08:12,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:08:12" (3/3) ... [2024-10-31 22:08:12,036 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2024-10-31 22:08:12,057 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:08:12,057 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-10-31 22:08:12,057 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:08:12,158 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:08:12,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 128 transitions, 277 flow [2024-10-31 22:08:12,292 INFO L124 PetriNetUnfolderBase]: 15/125 cut-off events. [2024-10-31 22:08:12,292 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:08:12,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 15/125 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 490 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2024-10-31 22:08:12,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 128 transitions, 277 flow [2024-10-31 22:08:12,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 123 transitions, 261 flow [2024-10-31 22:08:12,317 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:08:12,325 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;@389aec66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:08:12,325 INFO L334 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2024-10-31 22:08:12,329 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:08:12,329 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:08:12,329 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:08:12,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:12,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:08:12,331 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-31 22:08:12,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:12,338 INFO L85 PathProgramCache]: Analyzing trace with hash 967357, now seen corresponding path program 1 times [2024-10-31 22:08:12,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:12,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885982810] [2024-10-31 22:08:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:12,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:12,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:12,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885982810] [2024-10-31 22:08:12,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885982810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:12,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:12,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:08:12,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580628448] [2024-10-31 22:08:12,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:12,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:08:12,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:12,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:08:12,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:12,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 128 [2024-10-31 22:08:12,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 123 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:12,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:12,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 128 [2024-10-31 22:08:12,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:15,951 INFO L124 PetriNetUnfolderBase]: 10162/19360 cut-off events. [2024-10-31 22:08:15,951 INFO L125 PetriNetUnfolderBase]: For 458/458 co-relation queries the response was YES. [2024-10-31 22:08:16,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33112 conditions, 19360 events. 10162/19360 cut-off events. For 458/458 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 173874 event pairs, 6776 based on Foata normal form. 3/14956 useless extension candidates. Maximal degree in co-relation 31919. Up to 13364 conditions per place. [2024-10-31 22:08:16,133 INFO L140 encePairwiseOnDemand]: 112/128 looper letters, 62 selfloop transitions, 10 changer transitions 0/132 dead transitions. [2024-10-31 22:08:16,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 132 transitions, 423 flow [2024-10-31 22:08:16,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:08:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:08:16,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2024-10-31 22:08:16,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64453125 [2024-10-31 22:08:16,156 INFO L175 Difference]: Start difference. First operand has 118 places, 123 transitions, 261 flow. Second operand 4 states and 330 transitions. [2024-10-31 22:08:16,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 132 transitions, 423 flow [2024-10-31 22:08:16,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 132 transitions, 414 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:08:16,181 INFO L231 Difference]: Finished difference. Result has 119 places, 132 transitions, 340 flow [2024-10-31 22:08:16,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=119, PETRI_TRANSITIONS=132} [2024-10-31 22:08:16,189 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2024-10-31 22:08:16,189 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 132 transitions, 340 flow [2024-10-31 22:08:16,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:16,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:16,190 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:08:16,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:08:16,192 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-31 22:08:16,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:16,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1245269406, now seen corresponding path program 1 times [2024-10-31 22:08:16,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:16,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617445412] [2024-10-31 22:08:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:16,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:16,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:16,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617445412] [2024-10-31 22:08:16,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617445412] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:08:16,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314981777] [2024-10-31 22:08:16,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:16,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:08:16,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:08:16,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:08:16,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:08:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:16,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:08:16,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:08:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:16,627 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:08:16,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314981777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:16,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:08:16,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:08:16,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183418581] [2024-10-31 22:08:16,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:16,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:08:16,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:16,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:08:16,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:08:16,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 128 [2024-10-31 22:08:16,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 132 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:16,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:16,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 128 [2024-10-31 22:08:16,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:19,440 INFO L124 PetriNetUnfolderBase]: 10162/19357 cut-off events. [2024-10-31 22:08:19,440 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-10-31 22:08:19,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33001 conditions, 19357 events. 10162/19357 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 173866 event pairs, 6776 based on Foata normal form. 3/14958 useless extension candidates. Maximal degree in co-relation 32928. Up to 13349 conditions per place. [2024-10-31 22:08:19,626 INFO L140 encePairwiseOnDemand]: 115/128 looper letters, 52 selfloop transitions, 17 changer transitions 0/129 dead transitions. [2024-10-31 22:08:19,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 129 transitions, 466 flow [2024-10-31 22:08:19,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:08:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:08:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 450 transitions. [2024-10-31 22:08:19,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-10-31 22:08:19,636 INFO L175 Difference]: Start difference. First operand has 119 places, 132 transitions, 340 flow. Second operand 6 states and 450 transitions. [2024-10-31 22:08:19,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 129 transitions, 466 flow [2024-10-31 22:08:19,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 129 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:08:19,644 INFO L231 Difference]: Finished difference. Result has 121 places, 129 transitions, 362 flow [2024-10-31 22:08:19,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=121, PETRI_TRANSITIONS=129} [2024-10-31 22:08:19,645 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 3 predicate places. [2024-10-31 22:08:19,647 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 129 transitions, 362 flow [2024-10-31 22:08:19,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:19,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:19,648 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:08:19,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:08:19,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:08:19,851 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-31 22:08:19,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:19,854 INFO L85 PathProgramCache]: Analyzing trace with hash 51355055, now seen corresponding path program 1 times [2024-10-31 22:08:19,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:19,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053591457] [2024-10-31 22:08:19,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:19,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:20,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:20,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053591457] [2024-10-31 22:08:20,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053591457] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:08:20,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75289440] [2024-10-31 22:08:20,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:20,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:08:20,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:08:20,054 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:08:20,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:08:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:20,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:08:20,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:08:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:20,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:08:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:20,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75289440] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:08:20,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:08:20,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:08:20,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329004455] [2024-10-31 22:08:20,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:08:20,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:08:20,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:20,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:08:20,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:08:20,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 128 [2024-10-31 22:08:20,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 129 transitions, 362 flow. Second operand has 12 states, 12 states have (on average 64.08333333333333) internal successors, (769), 12 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:20,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:20,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 128 [2024-10-31 22:08:20,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:23,012 INFO L124 PetriNetUnfolderBase]: 10171/19393 cut-off events. [2024-10-31 22:08:23,012 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2024-10-31 22:08:23,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33142 conditions, 19393 events. 10171/19393 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 174131 event pairs, 6776 based on Foata normal form. 9/15000 useless extension candidates. Maximal degree in co-relation 32930. Up to 13364 conditions per place. [2024-10-31 22:08:23,148 INFO L140 encePairwiseOnDemand]: 115/128 looper letters, 59 selfloop transitions, 37 changer transitions 0/156 dead transitions. [2024-10-31 22:08:23,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 156 transitions, 728 flow [2024-10-31 22:08:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:08:23,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:08:23,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 735 transitions. [2024-10-31 22:08:23,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57421875 [2024-10-31 22:08:23,152 INFO L175 Difference]: Start difference. First operand has 121 places, 129 transitions, 362 flow. Second operand 10 states and 735 transitions. [2024-10-31 22:08:23,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 156 transitions, 728 flow [2024-10-31 22:08:23,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 156 transitions, 645 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-31 22:08:23,162 INFO L231 Difference]: Finished difference. Result has 128 places, 156 transitions, 577 flow [2024-10-31 22:08:23,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=577, PETRI_PLACES=128, PETRI_TRANSITIONS=156} [2024-10-31 22:08:23,164 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 10 predicate places. [2024-10-31 22:08:23,164 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 156 transitions, 577 flow [2024-10-31 22:08:23,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.08333333333333) internal successors, (769), 12 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:23,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:23,166 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:23,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:08:23,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a3ad68-1ee2-47b9-baaf-0e9fbf9c9270/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:08:23,371 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-31 22:08:23,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:23,372 INFO L85 PathProgramCache]: Analyzing trace with hash 83420374, now seen corresponding path program 1 times [2024-10-31 22:08:23,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:23,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112675301] [2024-10-31 22:08:23,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:23,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:23,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:23,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112675301] [2024-10-31 22:08:23,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112675301] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:23,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:23,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:08:23,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332185387] [2024-10-31 22:08:23,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:23,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:08:23,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:23,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:08:23,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:08:23,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 128 [2024-10-31 22:08:23,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 156 transitions, 577 flow. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:23,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:23,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 128 [2024-10-31 22:08:23,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:27,348 INFO L124 PetriNetUnfolderBase]: 22073/42035 cut-off events. [2024-10-31 22:08:27,348 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES. [2024-10-31 22:08:27,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71724 conditions, 42035 events. 22073/42035 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 1975. Compared 417520 event pairs, 14676 based on Foata normal form. 250/32722 useless extension candidates. Maximal degree in co-relation 71597. Up to 14608 conditions per place. [2024-10-31 22:08:27,596 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 149 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2024-10-31 22:08:27,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 219 transitions, 1098 flow [2024-10-31 22:08:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:08:27,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:08:27,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 449 transitions. [2024-10-31 22:08:27,599 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7015625 [2024-10-31 22:08:27,599 INFO L175 Difference]: Start difference. First operand has 128 places, 156 transitions, 577 flow. Second operand 5 states and 449 transitions. [2024-10-31 22:08:27,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 219 transitions, 1098 flow [2024-10-31 22:08:27,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 219 transitions, 1051 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-10-31 22:08:27,610 INFO L231 Difference]: Finished difference. Result has 132 places, 157 transitions, 574 flow [2024-10-31 22:08:27,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=574, PETRI_PLACES=132, PETRI_TRANSITIONS=157} [2024-10-31 22:08:27,612 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 14 predicate places. [2024-10-31 22:08:27,613 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 157 transitions, 574 flow [2024-10-31 22:08:27,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:27,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:27,614 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:27,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:08:27,614 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-31 22:08:27,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:27,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1708934626, now seen corresponding path program 1 times [2024-10-31 22:08:27,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:27,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962342417] [2024-10-31 22:08:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:27,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:27,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:27,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962342417] [2024-10-31 22:08:27,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962342417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:27,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:27,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:08:27,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199223241] [2024-10-31 22:08:27,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:27,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:08:27,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:27,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:08:27,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:08:27,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 128 [2024-10-31 22:08:27,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 157 transitions, 574 flow. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:27,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:27,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 128 [2024-10-31 22:08:27,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:34,975 INFO L124 PetriNetUnfolderBase]: 42648/80996 cut-off events. [2024-10-31 22:08:34,976 INFO L125 PetriNetUnfolderBase]: For 3111/3111 co-relation queries the response was YES. [2024-10-31 22:08:35,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139496 conditions, 80996 events. 42648/80996 cut-off events. For 3111/3111 co-relation queries the response was YES. Maximal size of possible extension queue 3763. Compared 873547 event pairs, 28228 based on Foata normal form. 498/63945 useless extension candidates. Maximal degree in co-relation 139285. Up to 27997 conditions per place. [2024-10-31 22:08:35,463 INFO L140 encePairwiseOnDemand]: 119/128 looper letters, 165 selfloop transitions, 12 changer transitions 0/238 dead transitions. [2024-10-31 22:08:35,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 238 transitions, 1244 flow [2024-10-31 22:08:35,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:08:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:08:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2024-10-31 22:08:35,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2024-10-31 22:08:35,467 INFO L175 Difference]: Start difference. First operand has 132 places, 157 transitions, 574 flow. Second operand 7 states and 592 transitions. [2024-10-31 22:08:35,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 238 transitions, 1244 flow [2024-10-31 22:08:35,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 238 transitions, 1239 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-31 22:08:35,478 INFO L231 Difference]: Finished difference. Result has 142 places, 166 transitions, 693 flow [2024-10-31 22:08:35,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=693, PETRI_PLACES=142, PETRI_TRANSITIONS=166} [2024-10-31 22:08:35,479 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 24 predicate places. [2024-10-31 22:08:35,480 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 166 transitions, 693 flow [2024-10-31 22:08:35,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:35,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:35,481 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:35,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:08:35,483 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-31 22:08:35,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:35,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1440787923, now seen corresponding path program 1 times [2024-10-31 22:08:35,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:35,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184472872] [2024-10-31 22:08:35,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:35,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:35,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:35,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184472872] [2024-10-31 22:08:35,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184472872] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:35,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:35,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:08:35,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699334159] [2024-10-31 22:08:35,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:35,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:08:35,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:35,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:08:35,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:08:35,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 128 [2024-10-31 22:08:35,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 166 transitions, 693 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:35,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:35,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 128 [2024-10-31 22:08:35,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand