./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-difference-det.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_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/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_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/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_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/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 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:58:35,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:58:35,322 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 21:58:35,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:58:35,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:58:35,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:58:35,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:58:35,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:58:35,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:58:35,363 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:58:35,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:58:35,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:58:35,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:58:35,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:58:35,365 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:58:35,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:58:35,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:58:35,366 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:58:35,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:58:35,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:58:35,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:58:35,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:58:35,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:58:35,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:58:35,368 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:58:35,369 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 21:58:35,369 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:58:35,369 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:58:35,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:58:35,384 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:58:35,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:58:35,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:58:35,385 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:58:35,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:58:35,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:58:35,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:58:35,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:58:35,387 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:58:35,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:58:35,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:58:35,388 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:58:35,388 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:58:35,389 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:58:35,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:58:35,389 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_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 [2024-10-31 21:58:35,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:58:35,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:58:35,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:58:35,716 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:58:35,717 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:58:35,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c Unable to find full path for "g++" [2024-10-31 21:58:38,045 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:58:38,360 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:58:38,361 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-31 21:58:38,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/data/df7ffa99a/63c41d71be15460ab4296ca54f710a9e/FLAG6c57b223c [2024-10-31 21:58:38,385 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/data/df7ffa99a/63c41d71be15460ab4296ca54f710a9e [2024-10-31 21:58:38,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:58:38,393 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:58:38,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:38,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:58:38,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:58:38,412 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:38" (1/1) ... [2024-10-31 21:58:38,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1acf1473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38, skipping insertion in model container [2024-10-31 21:58:38,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:38" (1/1) ... [2024-10-31 21:58:38,468 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:58:38,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:38,780 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:58:38,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:38,820 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:58:38,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38 WrapperNode [2024-10-31 21:58:38,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:38,821 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:38,821 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:58:38,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:58:38,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38" (1/1) ... [2024-10-31 21:58:38,836 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38" (1/1) ... [2024-10-31 21:58:38,863 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 111 [2024-10-31 21:58:38,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:38,864 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:58:38,864 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:58:38,864 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:58:38,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38" (1/1) ... [2024-10-31 21:58:38,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38" (1/1) ... [2024-10-31 21:58:38,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38" (1/1) ... [2024-10-31 21:58:38,909 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 21:58:38,914 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38" (1/1) ... [2024-10-31 21:58:38,914 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38" (1/1) ... [2024-10-31 21:58:38,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38" (1/1) ... [2024-10-31 21:58:38,924 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38" (1/1) ... [2024-10-31 21:58:38,925 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38" (1/1) ... [2024-10-31 21:58:38,926 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38" (1/1) ... [2024-10-31 21:58:38,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:58:38,930 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:58:38,930 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:58:38,930 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:58:38,931 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38" (1/1) ... [2024-10-31 21:58:38,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:58:38,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:38,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:39,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:58:39,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:58:39,050 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 21:58:39,051 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 21:58:39,051 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 21:58:39,051 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 21:58:39,052 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 21:58:39,052 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 21:58:39,052 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-31 21:58:39,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-31 21:58:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:58:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 21:58:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 21:58:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:58:39,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:58:39,057 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 21:58:39,203 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:58:39,205 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:58:39,602 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 21:58:39,603 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:58:39,850 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:58:39,850 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-31 21:58:39,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:39 BoogieIcfgContainer [2024-10-31 21:58:39,851 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:58:39,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:58:39,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:58:39,863 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:58:39,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:58:38" (1/3) ... [2024-10-31 21:58:39,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5de2d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:58:39, skipping insertion in model container [2024-10-31 21:58:39,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:38" (2/3) ... [2024-10-31 21:58:39,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5de2d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:58:39, skipping insertion in model container [2024-10-31 21:58:39,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:39" (3/3) ... [2024-10-31 21:58:39,867 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-10-31 21:58:39,885 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:58:39,886 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-31 21:58:39,886 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 21:58:39,975 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-31 21:58:40,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-10-31 21:58:40,074 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-10-31 21:58:40,074 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 21:58:40,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 163 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-10-31 21:58:40,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-10-31 21:58:40,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 133 flow [2024-10-31 21:58:40,095 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:58:40,102 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;@3bc5ed44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:58:40,103 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-10-31 21:58:40,109 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:58:40,109 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-31 21:58:40,109 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:58:40,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:40,110 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 21:58:40,111 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 21:58:40,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:40,117 INFO L85 PathProgramCache]: Analyzing trace with hash 384261220, now seen corresponding path program 1 times [2024-10-31 21:58:40,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:40,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457136919] [2024-10-31 21:58:40,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:40,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:40,398 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 21:58:40,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:40,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457136919] [2024-10-31 21:58:40,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457136919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:40,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:40,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 21:58:40,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315412256] [2024-10-31 21:58:40,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:40,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:58:40,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:40,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:58:40,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:58:40,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-31 21:58:40,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 21:58:40,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:40,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-31 21:58:40,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:42,521 INFO L124 PetriNetUnfolderBase]: 9115/14582 cut-off events. [2024-10-31 21:58:42,521 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2024-10-31 21:58:42,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27350 conditions, 14582 events. 9115/14582 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 105856 event pairs, 2507 based on Foata normal form. 249/11312 useless extension candidates. Maximal degree in co-relation 24833. Up to 9045 conditions per place. [2024-10-31 21:58:42,681 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 57 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-10-31 21:58:42,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 79 transitions, 315 flow [2024-10-31 21:58:42,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:58:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:58:42,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-10-31 21:58:42,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7473118279569892 [2024-10-31 21:58:42,699 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 133 flow. Second operand 3 states and 139 transitions. [2024-10-31 21:58:42,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 79 transitions, 315 flow [2024-10-31 21:58:42,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 79 transitions, 291 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-31 21:58:42,760 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 134 flow [2024-10-31 21:58:42,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2024-10-31 21:58:42,769 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -6 predicate places. [2024-10-31 21:58:42,770 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 134 flow [2024-10-31 21:58:42,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 21:58:42,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:42,771 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:42,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:58:42,771 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 21:58:42,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:42,774 INFO L85 PathProgramCache]: Analyzing trace with hash -92139897, now seen corresponding path program 1 times [2024-10-31 21:58:42,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:42,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136727802] [2024-10-31 21:58:42,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:42,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:42,971 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 21:58:42,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:42,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136727802] [2024-10-31 21:58:42,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136727802] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:42,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:42,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:42,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360825834] [2024-10-31 21:58:42,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:42,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:42,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:42,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:42,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:43,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-31 21:58:43,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 21:58:43,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:43,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-31 21:58:43,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:45,550 INFO L124 PetriNetUnfolderBase]: 15375/22262 cut-off events. [2024-10-31 21:58:45,550 INFO L125 PetriNetUnfolderBase]: For 1340/1340 co-relation queries the response was YES. [2024-10-31 21:58:45,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46230 conditions, 22262 events. 15375/22262 cut-off events. For 1340/1340 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 147464 event pairs, 8887 based on Foata normal form. 372/17572 useless extension candidates. Maximal degree in co-relation 20640. Up to 16077 conditions per place. [2024-10-31 21:58:45,844 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 83 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-10-31 21:58:45,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 104 transitions, 422 flow [2024-10-31 21:58:45,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:45,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-10-31 21:58:45,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6975806451612904 [2024-10-31 21:58:45,846 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 134 flow. Second operand 4 states and 173 transitions. [2024-10-31 21:58:45,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 104 transitions, 422 flow [2024-10-31 21:58:45,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 104 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:45,851 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 161 flow [2024-10-31 21:58:45,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-10-31 21:58:45,852 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -2 predicate places. [2024-10-31 21:58:45,853 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 161 flow [2024-10-31 21:58:45,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 21:58:45,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:45,854 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:45,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:58:45,855 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 21:58:45,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:45,858 INFO L85 PathProgramCache]: Analyzing trace with hash -917465738, now seen corresponding path program 1 times [2024-10-31 21:58:45,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:45,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521662334] [2024-10-31 21:58:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:45,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:45,948 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 21:58:45,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:45,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521662334] [2024-10-31 21:58:45,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521662334] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:45,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:45,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 21:58:45,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913696344] [2024-10-31 21:58:45,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:45,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:58:45,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:45,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:58:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:58:45,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-31 21:58:45,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 21:58:45,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:45,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-31 21:58:45,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:47,758 INFO L124 PetriNetUnfolderBase]: 11739/18766 cut-off events. [2024-10-31 21:58:47,758 INFO L125 PetriNetUnfolderBase]: For 3846/5124 co-relation queries the response was YES. [2024-10-31 21:58:47,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40088 conditions, 18766 events. 11739/18766 cut-off events. For 3846/5124 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 136311 event pairs, 3308 based on Foata normal form. 576/15602 useless extension candidates. Maximal degree in co-relation 25685. Up to 11443 conditions per place. [2024-10-31 21:58:48,032 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 58 selfloop transitions, 2 changer transitions 1/82 dead transitions. [2024-10-31 21:58:48,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 82 transitions, 361 flow [2024-10-31 21:58:48,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:58:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:58:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-10-31 21:58:48,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7043010752688172 [2024-10-31 21:58:48,036 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 161 flow. Second operand 3 states and 131 transitions. [2024-10-31 21:58:48,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 82 transitions, 361 flow [2024-10-31 21:58:48,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:48,043 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 176 flow [2024-10-31 21:58:48,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-10-31 21:58:48,044 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 0 predicate places. [2024-10-31 21:58:48,045 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 176 flow [2024-10-31 21:58:48,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 21:58:48,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:48,047 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:48,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:58:48,047 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 21:58:48,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:48,048 INFO L85 PathProgramCache]: Analyzing trace with hash -210445273, now seen corresponding path program 1 times [2024-10-31 21:58:48,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:48,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326612149] [2024-10-31 21:58:48,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:48,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:48,191 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 21:58:48,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:48,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326612149] [2024-10-31 21:58:48,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326612149] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:48,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:48,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:58:48,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609816050] [2024-10-31 21:58:48,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:48,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:48,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:48,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:48,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:48,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-31 21:58:48,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 21:58:48,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:48,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-31 21:58:48,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:51,504 INFO L124 PetriNetUnfolderBase]: 18934/30472 cut-off events. [2024-10-31 21:58:51,505 INFO L125 PetriNetUnfolderBase]: For 6818/7418 co-relation queries the response was YES. [2024-10-31 21:58:51,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70572 conditions, 30472 events. 18934/30472 cut-off events. For 6818/7418 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 240053 event pairs, 5659 based on Foata normal form. 720/26100 useless extension candidates. Maximal degree in co-relation 17661. Up to 8852 conditions per place. [2024-10-31 21:58:51,756 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 91 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2024-10-31 21:58:51,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 118 transitions, 546 flow [2024-10-31 21:58:51,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-10-31 21:58:51,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7741935483870968 [2024-10-31 21:58:51,760 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 176 flow. Second operand 4 states and 192 transitions. [2024-10-31 21:58:51,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 118 transitions, 546 flow [2024-10-31 21:58:51,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 118 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:51,770 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 232 flow [2024-10-31 21:58:51,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-10-31 21:58:51,771 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 5 predicate places. [2024-10-31 21:58:51,773 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 232 flow [2024-10-31 21:58:51,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 21:58:51,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:51,774 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:51,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:58:51,774 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 21:58:51,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:51,775 INFO L85 PathProgramCache]: Analyzing trace with hash -455125797, now seen corresponding path program 1 times [2024-10-31 21:58:51,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:51,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940940177] [2024-10-31 21:58:51,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:51,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:51,856 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 21:58:51,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:51,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940940177] [2024-10-31 21:58:51,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940940177] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:51,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240131432] [2024-10-31 21:58:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:51,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:51,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:51,861 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:51,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:58:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:51,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 21:58:51,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:52,013 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 21:58:52,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:58:52,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240131432] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:52,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:58:52,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-31 21:58:52,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850160148] [2024-10-31 21:58:52,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:52,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:52,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:52,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-31 21:58:52,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 21:58:52,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:52,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-31 21:58:52,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:54,929 INFO L124 PetriNetUnfolderBase]: 20899/32657 cut-off events. [2024-10-31 21:58:54,929 INFO L125 PetriNetUnfolderBase]: For 26743/27854 co-relation queries the response was YES. [2024-10-31 21:58:54,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83848 conditions, 32657 events. 20899/32657 cut-off events. For 26743/27854 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 247729 event pairs, 7245 based on Foata normal form. 1292/29712 useless extension candidates. Maximal degree in co-relation 39589. Up to 14689 conditions per place. [2024-10-31 21:58:55,165 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 64 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2024-10-31 21:58:55,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 471 flow [2024-10-31 21:58:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:55,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-10-31 21:58:55,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6491935483870968 [2024-10-31 21:58:55,169 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 232 flow. Second operand 4 states and 161 transitions. [2024-10-31 21:58:55,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 471 flow [2024-10-31 21:58:55,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 465 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:55,236 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 279 flow [2024-10-31 21:58:55,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2024-10-31 21:58:55,238 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2024-10-31 21:58:55,240 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 279 flow [2024-10-31 21:58:55,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 21:58:55,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:55,241 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:55,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:55,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f07f9c1-fab8-4ec1-a5b7-92eb4bf38abe/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:55,442 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 21:58:55,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:55,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1216262695, now seen corresponding path program 1 times [2024-10-31 21:58:55,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:55,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185371517] [2024-10-31 21:58:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:55,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:55,511 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 21:58:55,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:55,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185371517] [2024-10-31 21:58:55,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185371517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:55,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:55,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:55,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70559576] [2024-10-31 21:58:55,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:55,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:55,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:55,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:55,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:55,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-31 21:58:55,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 21:58:55,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:55,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-31 21:58:55,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:59:00,169 INFO L124 PetriNetUnfolderBase]: 36029/52511 cut-off events. [2024-10-31 21:59:00,169 INFO L125 PetriNetUnfolderBase]: For 83789/87701 co-relation queries the response was YES. [2024-10-31 21:59:00,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143806 conditions, 52511 events. 36029/52511 cut-off events. For 83789/87701 co-relation queries the response was YES. Maximal size of possible extension queue 1726. Compared 382445 event pairs, 20166 based on Foata normal form. 1792/49291 useless extension candidates. Maximal degree in co-relation 63047. Up to 37232 conditions per place. [2024-10-31 21:59:00,817 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 106 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2024-10-31 21:59:00,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 128 transitions, 859 flow [2024-10-31 21:59:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:59:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:59:00,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-10-31 21:59:00,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6693548387096774 [2024-10-31 21:59:00,820 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 279 flow. Second operand 4 states and 166 transitions. [2024-10-31 21:59:00,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 128 transitions, 859 flow [2024-10-31 21:59:00,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 128 transitions, 798 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-10-31 21:59:00,982 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 287 flow [2024-10-31 21:59:00,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=287, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-10-31 21:59:00,983 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2024-10-31 21:59:00,984 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 287 flow [2024-10-31 21:59:00,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 21:59:00,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:59:00,984 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:00,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 21:59:00,985 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-31 21:59:00,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:00,986 INFO L85 PathProgramCache]: Analyzing trace with hash -374429911, now seen corresponding path program 1 times [2024-10-31 21:59:00,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:00,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437442641] [2024-10-31 21:59:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:00,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:01,062 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 21:59:01,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:01,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437442641] [2024-10-31 21:59:01,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437442641] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:01,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:01,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:59:01,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103703485] [2024-10-31 21:59:01,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:01,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:59:01,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:01,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:59:01,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:59:01,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-31 21:59:01,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 21:59:01,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:59:01,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-31 21:59:01,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:59:09,768 INFO L124 PetriNetUnfolderBase]: 52888/78092 cut-off events. [2024-10-31 21:59:09,768 INFO L125 PetriNetUnfolderBase]: For 82162/92631 co-relation queries the response was YES.