./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-match-subst.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_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/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_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/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_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/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 2c931aeff3bd4feb775048ea000220a43a3b08d8a3667f51cb57a0babc9201aa --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:59:36,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:59:36,261 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 21:59:36,267 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:59:36,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:59:36,302 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:59:36,303 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:59:36,304 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:59:36,305 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:59:36,307 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:59:36,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:59:36,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:59:36,308 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:59:36,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:59:36,311 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:59:36,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:59:36,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:59:36,312 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:59:36,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:59:36,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:59:36,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:59:36,317 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:59:36,317 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:59:36,318 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:59:36,318 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:59:36,318 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 21:59:36,319 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:59:36,319 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:59:36,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:59:36,319 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:59:36,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:59:36,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:59:36,320 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:59:36,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:59:36,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:59:36,321 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:59:36,321 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:59:36,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:59:36,322 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:59:36,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:59:36,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:59:36,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:59:36,324 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:59:36,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:59:36,324 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_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c931aeff3bd4feb775048ea000220a43a3b08d8a3667f51cb57a0babc9201aa [2024-10-31 21:59:36,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:59:36,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:59:36,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:59:36,665 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:59:36,667 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:59:36,668 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c Unable to find full path for "g++" [2024-10-31 21:59:38,720 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:59:39,023 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:59:39,024 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2024-10-31 21:59:39,033 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/bin/uautomizer-verify-4GaUIPS5ZU/data/90bf84aa5/72c59572072941088f9fb6582ec35ad3/FLAG784209812 [2024-10-31 21:59:39,055 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/bin/uautomizer-verify-4GaUIPS5ZU/data/90bf84aa5/72c59572072941088f9fb6582ec35ad3 [2024-10-31 21:59:39,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:59:39,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:59:39,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:59:39,066 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:59:39,073 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:59:39,074 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:59:39" (1/1) ... [2024-10-31 21:59:39,075 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@701bf2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39, skipping insertion in model container [2024-10-31 21:59:39,076 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:59:39" (1/1) ... [2024-10-31 21:59:39,109 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:59:39,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:59:39,416 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:59:39,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:59:39,480 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:59:39,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39 WrapperNode [2024-10-31 21:59:39,482 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:59:39,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:59:39,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:59:39,484 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:59:39,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39" (1/1) ... [2024-10-31 21:59:39,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39" (1/1) ... [2024-10-31 21:59:39,562 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 13, calls inlined = 23, statements flattened = 285 [2024-10-31 21:59:39,563 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:59:39,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:59:39,564 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:59:39,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:59:39,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39" (1/1) ... [2024-10-31 21:59:39,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39" (1/1) ... [2024-10-31 21:59:39,604 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39" (1/1) ... [2024-10-31 21:59:39,639 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 21:59:39,639 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39" (1/1) ... [2024-10-31 21:59:39,640 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39" (1/1) ... [2024-10-31 21:59:39,656 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39" (1/1) ... [2024-10-31 21:59:39,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39" (1/1) ... [2024-10-31 21:59:39,665 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39" (1/1) ... [2024-10-31 21:59:39,667 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39" (1/1) ... [2024-10-31 21:59:39,682 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:59:39,683 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:59:39,683 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:59:39,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:59:39,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39" (1/1) ... [2024-10-31 21:59:39,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:59:39,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:39,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:39,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a52790cc-c468-4bc6-b6e9-fa7ddde105cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:59:39,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:59:39,768 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 21:59:39,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 21:59:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 21:59:39,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 21:59:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 21:59:39,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 21:59:39,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:59:39,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:59:39,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:59:39,774 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 21:59:39,953 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:59:39,959 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:59:40,877 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 21:59:40,878 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:59:41,328 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:59:41,329 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 21:59:41,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:59:41 BoogieIcfgContainer [2024-10-31 21:59:41,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:59:41,331 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:59:41,332 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:59:41,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:59:41,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:59:39" (1/3) ... [2024-10-31 21:59:41,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f09822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:59:41, skipping insertion in model container [2024-10-31 21:59:41,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:39" (2/3) ... [2024-10-31 21:59:41,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f09822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:59:41, skipping insertion in model container [2024-10-31 21:59:41,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:59:41" (3/3) ... [2024-10-31 21:59:41,338 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2024-10-31 21:59:41,357 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:59:41,357 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-10-31 21:59:41,357 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 21:59:41,458 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 21:59:41,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 125 transitions, 271 flow [2024-10-31 21:59:41,551 INFO L124 PetriNetUnfolderBase]: 12/122 cut-off events. [2024-10-31 21:59:41,551 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 21:59:41,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 122 events. 12/122 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 491 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2024-10-31 21:59:41,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 125 transitions, 271 flow [2024-10-31 21:59:41,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 120 transitions, 255 flow [2024-10-31 21:59:41,580 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:59:41,586 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;@7a323234, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:59:41,586 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2024-10-31 21:59:41,591 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:59:41,591 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-10-31 21:59:41,591 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:59:41,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:59:41,592 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 21:59:41,592 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-31 21:59:41,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:41,598 INFO L85 PathProgramCache]: Analyzing trace with hash 838780535, now seen corresponding path program 1 times [2024-10-31 21:59:41,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:41,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799755245] [2024-10-31 21:59:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:41,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:41,927 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 21:59:41,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799755245] [2024-10-31 21:59:41,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799755245] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:41,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:41,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:59:41,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099530451] [2024-10-31 21:59:41,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:41,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:59:41,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:41,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:59:41,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:59:42,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2024-10-31 21:59:42,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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 21:59:42,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:59:42,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2024-10-31 21:59:42,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:59:47,503 INFO L124 PetriNetUnfolderBase]: 23015/40632 cut-off events. [2024-10-31 21:59:47,504 INFO L125 PetriNetUnfolderBase]: For 608/608 co-relation queries the response was YES. [2024-10-31 21:59:47,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71837 conditions, 40632 events. 23015/40632 cut-off events. For 608/608 co-relation queries the response was YES. Maximal size of possible extension queue 1562. Compared 371473 event pairs, 5638 based on Foata normal form. 1256/36536 useless extension candidates. Maximal degree in co-relation 70698. Up to 15184 conditions per place. [2024-10-31 21:59:47,877 INFO L140 encePairwiseOnDemand]: 110/125 looper letters, 104 selfloop transitions, 10 changer transitions 0/180 dead transitions. [2024-10-31 21:59:47,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 180 transitions, 615 flow [2024-10-31 21:59:47,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:59:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:59:47,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2024-10-31 21:59:47,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.792 [2024-10-31 21:59:47,894 INFO L175 Difference]: Start difference. First operand has 118 places, 120 transitions, 255 flow. Second operand 4 states and 396 transitions. [2024-10-31 21:59:47,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 180 transitions, 615 flow [2024-10-31 21:59:47,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 180 transitions, 600 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 21:59:47,913 INFO L231 Difference]: Finished difference. Result has 117 places, 124 transitions, 312 flow [2024-10-31 21:59:47,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=117, PETRI_TRANSITIONS=124} [2024-10-31 21:59:47,920 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2024-10-31 21:59:47,920 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 124 transitions, 312 flow [2024-10-31 21:59:47,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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 21:59:47,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:59:47,922 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 21:59:47,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:59:47,923 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-31 21:59:47,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:47,924 INFO L85 PathProgramCache]: Analyzing trace with hash 232393793, now seen corresponding path program 1 times [2024-10-31 21:59:47,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:47,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158685499] [2024-10-31 21:59:47,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:47,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:48,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:48,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158685499] [2024-10-31 21:59:48,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158685499] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:48,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:48,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:59:48,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177106293] [2024-10-31 21:59:48,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:48,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:59:48,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:48,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:59:48,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:59:48,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 125 [2024-10-31 21:59:48,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 124 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 21:59:48,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:59:48,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 125 [2024-10-31 21:59:48,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:59:51,968 INFO L124 PetriNetUnfolderBase]: 16132/32508 cut-off events. [2024-10-31 21:59:51,968 INFO L125 PetriNetUnfolderBase]: For 6540/6983 co-relation queries the response was YES. [2024-10-31 21:59:52,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59590 conditions, 32508 events. 16132/32508 cut-off events. For 6540/6983 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 326542 event pairs, 7199 based on Foata normal form. 443/28360 useless extension candidates. Maximal degree in co-relation 40083. Up to 11150 conditions per place. [2024-10-31 21:59:52,234 INFO L140 encePairwiseOnDemand]: 118/125 looper letters, 71 selfloop transitions, 7 changer transitions 0/152 dead transitions. [2024-10-31 21:59:52,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 152 transitions, 529 flow [2024-10-31 21:59:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:59:52,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:59:52,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2024-10-31 21:59:52,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-31 21:59:52,238 INFO L175 Difference]: Start difference. First operand has 117 places, 124 transitions, 312 flow. Second operand 4 states and 375 transitions. [2024-10-31 21:59:52,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 152 transitions, 529 flow [2024-10-31 21:59:52,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 152 transitions, 529 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:59:52,268 INFO L231 Difference]: Finished difference. Result has 120 places, 124 transitions, 336 flow [2024-10-31 21:59:52,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=120, PETRI_TRANSITIONS=124} [2024-10-31 21:59:52,269 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2024-10-31 21:59:52,269 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 124 transitions, 336 flow [2024-10-31 21:59:52,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 21:59:52,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:59:52,270 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:52,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:59:52,271 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-31 21:59:52,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:52,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1385757797, now seen corresponding path program 1 times [2024-10-31 21:59:52,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:52,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808636705] [2024-10-31 21:59:52,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:52,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:52,369 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 21:59:52,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:52,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808636705] [2024-10-31 21:59:52,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808636705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:52,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:52,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:59:52,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164799660] [2024-10-31 21:59:52,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:52,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:59:52,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:52,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:59:52,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:59:52,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 125 [2024-10-31 21:59:52,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 124 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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 21:59:52,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:59:52,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 125 [2024-10-31 21:59:52,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:59:56,334 INFO L124 PetriNetUnfolderBase]: 17340/34056 cut-off events. [2024-10-31 21:59:56,335 INFO L125 PetriNetUnfolderBase]: For 15002/15445 co-relation queries the response was YES. [2024-10-31 21:59:56,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66158 conditions, 34056 events. 17340/34056 cut-off events. For 15002/15445 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 337306 event pairs, 8097 based on Foata normal form. 681/29866 useless extension candidates. Maximal degree in co-relation 45075. Up to 12342 conditions per place. [2024-10-31 21:59:56,604 INFO L140 encePairwiseOnDemand]: 119/125 looper letters, 73 selfloop transitions, 7 changer transitions 0/150 dead transitions. [2024-10-31 21:59:56,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 150 transitions, 549 flow [2024-10-31 21:59:56,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:59:56,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:59:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2024-10-31 21:59:56,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.732 [2024-10-31 21:59:56,608 INFO L175 Difference]: Start difference. First operand has 120 places, 124 transitions, 336 flow. Second operand 4 states and 366 transitions. [2024-10-31 21:59:56,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 150 transitions, 549 flow [2024-10-31 21:59:56,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 150 transitions, 541 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:59:56,686 INFO L231 Difference]: Finished difference. Result has 120 places, 123 transitions, 338 flow [2024-10-31 21:59:56,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=338, PETRI_PLACES=120, PETRI_TRANSITIONS=123} [2024-10-31 21:59:56,689 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2024-10-31 21:59:56,689 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 123 transitions, 338 flow [2024-10-31 21:59:56,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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 21:59:56,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:59:56,690 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:56,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:59:56,691 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-31 21:59:56,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:56,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1449834333, now seen corresponding path program 1 times [2024-10-31 21:59:56,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:56,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821916453] [2024-10-31 21:59:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:56,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:56,781 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 21:59:56,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:56,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821916453] [2024-10-31 21:59:56,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821916453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:56,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:56,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:59:56,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968383663] [2024-10-31 21:59:56,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:56,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:59:56,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:56,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:59:56,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:59:56,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2024-10-31 21:59:56,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 123 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 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 21:59:56,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:59:56,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2024-10-31 21:59:56,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:02,587 INFO L124 PetriNetUnfolderBase]: 32976/59804 cut-off events. [2024-10-31 22:00:02,587 INFO L125 PetriNetUnfolderBase]: For 32156/33933 co-relation queries the response was YES. [2024-10-31 22:00:02,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121862 conditions, 59804 events. 32976/59804 cut-off events. For 32156/33933 co-relation queries the response was YES. Maximal size of possible extension queue 2229. Compared 596568 event pairs, 7734 based on Foata normal form. 3002/54259 useless extension candidates. Maximal degree in co-relation 62630. Up to 21704 conditions per place. [2024-10-31 22:00:03,059 INFO L140 encePairwiseOnDemand]: 110/125 looper letters, 117 selfloop transitions, 10 changer transitions 0/191 dead transitions. [2024-10-31 22:00:03,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 191 transitions, 842 flow [2024-10-31 22:00:03,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:00:03,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:00:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 394 transitions. [2024-10-31 22:00:03,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.788 [2024-10-31 22:00:03,062 INFO L175 Difference]: Start difference. First operand has 120 places, 123 transitions, 338 flow. Second operand 4 states and 394 transitions. [2024-10-31 22:00:03,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 191 transitions, 842 flow [2024-10-31 22:00:03,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 191 transitions, 816 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:00:03,495 INFO L231 Difference]: Finished difference. Result has 121 places, 127 transitions, 390 flow [2024-10-31 22:00:03,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=121, PETRI_TRANSITIONS=127} [2024-10-31 22:00:03,496 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 3 predicate places. [2024-10-31 22:00:03,496 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 127 transitions, 390 flow [2024-10-31 22:00:03,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 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 22:00:03,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:03,497 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:03,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:00:03,497 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-31 22:00:03,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:03,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1995190342, now seen corresponding path program 1 times [2024-10-31 22:00:03,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:03,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900653327] [2024-10-31 22:00:03,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:03,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:03,571 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 22:00:03,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:03,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900653327] [2024-10-31 22:00:03,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900653327] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:03,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:03,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:00:03,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205558578] [2024-10-31 22:00:03,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:03,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:00:03,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:03,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:00:03,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:00:03,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 125 [2024-10-31 22:00:03,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 127 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 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 22:00:03,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:03,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 125 [2024-10-31 22:00:03,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:08,272 INFO L124 PetriNetUnfolderBase]: 24595/49066 cut-off events. [2024-10-31 22:00:08,272 INFO L125 PetriNetUnfolderBase]: For 29070/30832 co-relation queries the response was YES. [2024-10-31 22:00:08,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103906 conditions, 49066 events. 24595/49066 cut-off events. For 29070/30832 co-relation queries the response was YES. Maximal size of possible extension queue 1899. Compared 518961 event pairs, 7899 based on Foata normal form. 1319/44352 useless extension candidates. Maximal degree in co-relation 38246. Up to 18020 conditions per place. [2024-10-31 22:00:08,595 INFO L140 encePairwiseOnDemand]: 118/125 looper letters, 80 selfloop transitions, 7 changer transitions 0/159 dead transitions. [2024-10-31 22:00:08,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 159 transitions, 681 flow [2024-10-31 22:00:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:00:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:00:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2024-10-31 22:00:08,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.748 [2024-10-31 22:00:08,598 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 390 flow. Second operand 4 states and 374 transitions. [2024-10-31 22:00:08,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 159 transitions, 681 flow