./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/clever.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/clever.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya --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 f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:51:29,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:51:29,306 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 23:51:29,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:51:29,310 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:51:29,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:51:29,336 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:51:29,336 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:51:29,337 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:51:29,338 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:51:29,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:51:29,339 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:51:29,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:51:29,340 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:51:29,341 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:51:29,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:51:29,342 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:51:29,342 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:51:29,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:51:29,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:51:29,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:51:29,345 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:51:29,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:51:29,346 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:51:29,346 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 23:51:29,346 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:51:29,347 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:51:29,347 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:51:29,348 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:51:29,348 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:51:29,349 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:51:29,349 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:51:29,349 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:51:29,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:51:29,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:51:29,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:51:29,351 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:51:29,351 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:51:29,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:51:29,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:51:29,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:51:29,352 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:51:29,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:51:29,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:51:29,353 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_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d [2023-11-28 23:51:29,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:51:29,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:51:29,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:51:29,608 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:51:29,608 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:51:29,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/clever.wvr.c [2023-11-28 23:51:32,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:51:32,587 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:51:32,587 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/sv-benchmarks/c/weaver/clever.wvr.c [2023-11-28 23:51:32,596 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/data/f3077d7d0/f4653215927e46f8b645ab0eb45b8bbd/FLAG76615fa84 [2023-11-28 23:51:32,611 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/data/f3077d7d0/f4653215927e46f8b645ab0eb45b8bbd [2023-11-28 23:51:32,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:51:32,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:51:32,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:51:32,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:51:32,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:51:32,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0e8824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32, skipping insertion in model container [2023-11-28 23:51:32,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,647 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:51:32,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:51:32,836 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:51:32,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:51:32,872 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:51:32,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32 WrapperNode [2023-11-28 23:51:32,873 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:51:32,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:51:32,874 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:51:32,874 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:51:32,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,910 INFO L138 Inliner]: procedures = 19, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 86 [2023-11-28 23:51:32,911 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:51:32,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:51:32,912 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:51:32,912 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:51:32,924 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,927 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,943 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-28 23:51:32,944 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,944 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,950 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,955 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:51:32,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:51:32,960 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:51:32,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:51:32,961 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:51:32,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:32,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:51:32,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:51:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:51:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-28 23:51:33,023 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-28 23:51:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-28 23:51:33,024 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-28 23:51:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:51:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:51:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:51:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:51:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 23:51:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 23:51:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 23:51:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:51:33,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:51:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 23:51:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 23:51:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 23:51:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:51:33,026 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:51:33,136 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:51:33,137 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:51:33,331 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:51:33,551 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:51:33,551 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-28 23:51:33,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:51:33 BoogieIcfgContainer [2023-11-28 23:51:33,551 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:51:33,554 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:51:33,554 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:51:33,557 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:51:33,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:51:32" (1/3) ... [2023-11-28 23:51:33,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a57559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:51:33, skipping insertion in model container [2023-11-28 23:51:33,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (2/3) ... [2023-11-28 23:51:33,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a57559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:51:33, skipping insertion in model container [2023-11-28 23:51:33,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:51:33" (3/3) ... [2023-11-28 23:51:33,559 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2023-11-28 23:51:33,566 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:51:33,575 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:51:33,575 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-28 23:51:33,576 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:51:33,613 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-28 23:51:33,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 76 flow [2023-11-28 23:51:33,716 INFO L124 PetriNetUnfolderBase]: 3/29 cut-off events. [2023-11-28 23:51:33,716 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-28 23:51:33,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 29 events. 3/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 67 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-11-28 23:51:33,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 31 transitions, 76 flow [2023-11-28 23:51:33,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 63 flow [2023-11-28 23:51:33,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:51:33,741 INFO L357 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, mHoare=true, 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;@42d4f46b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:51:33,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-28 23:51:33,749 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:51:33,749 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-28 23:51:33,749 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 23:51:33,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:33,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-28 23:51:33,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:51:33,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:33,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1640462686, now seen corresponding path program 1 times [2023-11-28 23:51:33,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:33,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657996646] [2023-11-28 23:51:33,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:33,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:34,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:34,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:34,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657996646] [2023-11-28 23:51:34,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657996646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:34,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:34,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:51:34,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037839009] [2023-11-28 23:51:34,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:34,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:51:34,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:34,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:51:34,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:51:34,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-28 23:51:34,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2023-11-28 23:51:34,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:34,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-28 23:51:34,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:34,250 INFO L124 PetriNetUnfolderBase]: 247/472 cut-off events. [2023-11-28 23:51:34,250 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-28 23:51:34,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 472 events. 247/472 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2357 event pairs, 88 based on Foata normal form. 10/345 useless extension candidates. Maximal degree in co-relation 812. Up to 225 conditions per place. [2023-11-28 23:51:34,258 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 35 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-11-28 23:51:34,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 47 transitions, 188 flow [2023-11-28 23:51:34,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:51:34,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:51:34,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2023-11-28 23:51:34,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2023-11-28 23:51:34,269 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 84 transitions. [2023-11-28 23:51:34,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 84 transitions. [2023-11-28 23:51:34,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:34,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 84 transitions. [2023-11-28 23:51:34,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2023-11-28 23:51:34,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-28 23:51:34,278 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-28 23:51:34,280 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 63 flow. Second operand 4 states and 84 transitions. [2023-11-28 23:51:34,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 47 transitions, 188 flow [2023-11-28 23:51:34,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 47 transitions, 179 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 23:51:34,285 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 86 flow [2023-11-28 23:51:34,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-11-28 23:51:34,290 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-11-28 23:51:34,290 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 86 flow [2023-11-28 23:51:34,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2023-11-28 23:51:34,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:34,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-28 23:51:34,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:51:34,291 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:51:34,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:34,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1640462719, now seen corresponding path program 1 times [2023-11-28 23:51:34,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:34,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779806219] [2023-11-28 23:51:34,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:34,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:34,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:34,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779806219] [2023-11-28 23:51:34,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779806219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:34,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:34,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:51:34,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306035325] [2023-11-28 23:51:34,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:34,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:51:34,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:34,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:51:34,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:51:34,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-28 23:51:34,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2023-11-28 23:51:34,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:34,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-28 23:51:34,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:34,538 INFO L124 PetriNetUnfolderBase]: 247/451 cut-off events. [2023-11-28 23:51:34,538 INFO L125 PetriNetUnfolderBase]: For 122/126 co-relation queries the response was YES. [2023-11-28 23:51:34,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 451 events. 247/451 cut-off events. For 122/126 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2142 event pairs, 104 based on Foata normal form. 20/383 useless extension candidates. Maximal degree in co-relation 680. Up to 287 conditions per place. [2023-11-28 23:51:34,544 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-11-28 23:51:34,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 150 flow [2023-11-28 23:51:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:51:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:51:34,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2023-11-28 23:51:34,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2023-11-28 23:51:34,547 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 68 transitions. [2023-11-28 23:51:34,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 68 transitions. [2023-11-28 23:51:34,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:34,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 68 transitions. [2023-11-28 23:51:34,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2023-11-28 23:51:34,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-28 23:51:34,550 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-28 23:51:34,550 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 86 flow. Second operand 4 states and 68 transitions. [2023-11-28 23:51:34,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 150 flow [2023-11-28 23:51:34,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 150 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:51:34,553 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 90 flow [2023-11-28 23:51:34,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-11-28 23:51:34,554 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-11-28 23:51:34,555 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 90 flow [2023-11-28 23:51:34,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2023-11-28 23:51:34,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:34,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:34,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:51:34,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:51:34,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:34,556 INFO L85 PathProgramCache]: Analyzing trace with hash -685262903, now seen corresponding path program 1 times [2023-11-28 23:51:34,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:34,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613184700] [2023-11-28 23:51:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:34,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:34,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:34,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613184700] [2023-11-28 23:51:34,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613184700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:34,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:34,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:51:34,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397460618] [2023-11-28 23:51:34,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:34,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:51:34,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:34,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:51:34,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:51:34,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-28 23:51:34,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2023-11-28 23:51:34,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:34,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-28 23:51:34,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:34,783 INFO L124 PetriNetUnfolderBase]: 381/724 cut-off events. [2023-11-28 23:51:34,783 INFO L125 PetriNetUnfolderBase]: For 210/214 co-relation queries the response was YES. [2023-11-28 23:51:34,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 724 events. 381/724 cut-off events. For 210/214 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3772 event pairs, 63 based on Foata normal form. 20/644 useless extension candidates. Maximal degree in co-relation 1215. Up to 389 conditions per place. [2023-11-28 23:51:34,791 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 39 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-11-28 23:51:34,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 51 transitions, 243 flow [2023-11-28 23:51:34,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:51:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:51:34,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2023-11-28 23:51:34,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2023-11-28 23:51:34,793 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 82 transitions. [2023-11-28 23:51:34,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 82 transitions. [2023-11-28 23:51:34,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:34,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 82 transitions. [2023-11-28 23:51:34,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2023-11-28 23:51:34,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-28 23:51:34,796 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-28 23:51:34,796 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 90 flow. Second operand 4 states and 82 transitions. [2023-11-28 23:51:34,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 51 transitions, 243 flow [2023-11-28 23:51:34,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 51 transitions, 233 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 23:51:34,799 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 104 flow [2023-11-28 23:51:34,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-11-28 23:51:34,801 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2023-11-28 23:51:34,801 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 104 flow [2023-11-28 23:51:34,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2023-11-28 23:51:34,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:34,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:34,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:51:34,802 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:51:34,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:34,802 INFO L85 PathProgramCache]: Analyzing trace with hash -700358100, now seen corresponding path program 1 times [2023-11-28 23:51:34,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:34,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052637140] [2023-11-28 23:51:34,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:34,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:34,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:34,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052637140] [2023-11-28 23:51:34,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052637140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:34,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:34,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:51:34,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053376321] [2023-11-28 23:51:34,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:34,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:51:34,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:34,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:51:34,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:51:34,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-28 23:51:34,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2023-11-28 23:51:34,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:34,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-28 23:51:34,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:35,022 INFO L124 PetriNetUnfolderBase]: 417/807 cut-off events. [2023-11-28 23:51:35,022 INFO L125 PetriNetUnfolderBase]: For 351/367 co-relation queries the response was YES. [2023-11-28 23:51:35,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 807 events. 417/807 cut-off events. For 351/367 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4239 event pairs, 160 based on Foata normal form. 42/718 useless extension candidates. Maximal degree in co-relation 1433. Up to 402 conditions per place. [2023-11-28 23:51:35,030 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 33 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-11-28 23:51:35,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 232 flow [2023-11-28 23:51:35,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:51:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:51:35,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2023-11-28 23:51:35,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725806451612904 [2023-11-28 23:51:35,033 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 71 transitions. [2023-11-28 23:51:35,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 71 transitions. [2023-11-28 23:51:35,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:35,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 71 transitions. [2023-11-28 23:51:35,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-11-28 23:51:35,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-28 23:51:35,035 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-28 23:51:35,035 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 104 flow. Second operand 4 states and 71 transitions. [2023-11-28 23:51:35,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 232 flow [2023-11-28 23:51:35,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:51:35,038 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 106 flow [2023-11-28 23:51:35,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2023-11-28 23:51:35,040 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2023-11-28 23:51:35,040 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 106 flow [2023-11-28 23:51:35,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2023-11-28 23:51:35,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:35,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:35,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 23:51:35,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:51:35,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:35,041 INFO L85 PathProgramCache]: Analyzing trace with hash -236264253, now seen corresponding path program 1 times [2023-11-28 23:51:35,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:35,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212950025] [2023-11-28 23:51:35,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:35,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:35,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:35,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212950025] [2023-11-28 23:51:35,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212950025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:35,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:35,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:51:35,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996133672] [2023-11-28 23:51:35,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:35,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:51:35,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:35,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:51:35,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:51:35,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-28 23:51:35,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2023-11-28 23:51:35,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:35,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-28 23:51:35,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:35,308 INFO L124 PetriNetUnfolderBase]: 521/1018 cut-off events. [2023-11-28 23:51:35,309 INFO L125 PetriNetUnfolderBase]: For 642/694 co-relation queries the response was YES. [2023-11-28 23:51:35,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2553 conditions, 1018 events. 521/1018 cut-off events. For 642/694 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5623 event pairs, 109 based on Foata normal form. 42/1050 useless extension candidates. Maximal degree in co-relation 1985. Up to 483 conditions per place. [2023-11-28 23:51:35,319 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 50 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-11-28 23:51:35,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 61 transitions, 336 flow [2023-11-28 23:51:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:51:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:51:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2023-11-28 23:51:35,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6693548387096774 [2023-11-28 23:51:35,321 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 83 transitions. [2023-11-28 23:51:35,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 83 transitions. [2023-11-28 23:51:35,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:35,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 83 transitions. [2023-11-28 23:51:35,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2023-11-28 23:51:35,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-28 23:51:35,323 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-28 23:51:35,323 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 106 flow. Second operand 4 states and 83 transitions. [2023-11-28 23:51:35,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 61 transitions, 336 flow [2023-11-28 23:51:35,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 326 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 23:51:35,328 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 120 flow [2023-11-28 23:51:35,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-11-28 23:51:35,329 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2023-11-28 23:51:35,329 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 120 flow [2023-11-28 23:51:35,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2023-11-28 23:51:35,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:35,329 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:35,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:51:35,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:51:35,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:35,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1408627285, now seen corresponding path program 1 times [2023-11-28 23:51:35,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:35,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459783137] [2023-11-28 23:51:35,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:35,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:35,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:35,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459783137] [2023-11-28 23:51:35,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459783137] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:51:35,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573955815] [2023-11-28 23:51:35,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:35,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:35,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:35,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:51:35,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:51:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:51:35,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:35,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:51:35,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573955815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:35,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:51:35,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-28 23:51:35,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992772425] [2023-11-28 23:51:35,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:35,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:51:35,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:35,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:51:35,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:51:35,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-28 23:51:35,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 120 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2023-11-28 23:51:35,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:35,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-28 23:51:35,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:35,809 INFO L124 PetriNetUnfolderBase]: 493/967 cut-off events. [2023-11-28 23:51:35,809 INFO L125 PetriNetUnfolderBase]: For 542/580 co-relation queries the response was YES. [2023-11-28 23:51:35,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2546 conditions, 967 events. 493/967 cut-off events. For 542/580 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5456 event pairs, 33 based on Foata normal form. 28/965 useless extension candidates. Maximal degree in co-relation 2109. Up to 270 conditions per place. [2023-11-28 23:51:35,818 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 61 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2023-11-28 23:51:35,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 404 flow [2023-11-28 23:51:35,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:51:35,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:51:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2023-11-28 23:51:35,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2023-11-28 23:51:35,820 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 120 transitions. [2023-11-28 23:51:35,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 120 transitions. [2023-11-28 23:51:35,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:35,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 120 transitions. [2023-11-28 23:51:35,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-11-28 23:51:35,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 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) [2023-11-28 23:51:35,823 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 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) [2023-11-28 23:51:35,823 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 120 flow. Second operand 6 states and 120 transitions. [2023-11-28 23:51:35,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 404 flow [2023-11-28 23:51:35,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:51:35,827 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 132 flow [2023-11-28 23:51:35,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-11-28 23:51:35,828 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2023-11-28 23:51:35,828 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 132 flow [2023-11-28 23:51:35,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2023-11-28 23:51:35,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:35,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:35,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:51:36,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-28 23:51:36,030 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:51:36,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:36,031 INFO L85 PathProgramCache]: Analyzing trace with hash -717772517, now seen corresponding path program 1 times [2023-11-28 23:51:36,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:36,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536934187] [2023-11-28 23:51:36,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:36,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:36,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536934187] [2023-11-28 23:51:36,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536934187] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:51:36,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063290726] [2023-11-28 23:51:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:36,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:36,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:36,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:51:36,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:51:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:36,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:51:36,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:36,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:51:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:36,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063290726] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:51:36,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:51:36,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-28 23:51:36,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61662241] [2023-11-28 23:51:36,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:51:36,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:51:36,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:36,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:51:36,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:51:36,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-28 23:51:36,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 132 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 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) [2023-11-28 23:51:36,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:36,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-28 23:51:36,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:36,730 INFO L124 PetriNetUnfolderBase]: 1093/2161 cut-off events. [2023-11-28 23:51:36,730 INFO L125 PetriNetUnfolderBase]: For 1835/1915 co-relation queries the response was YES. [2023-11-28 23:51:36,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5842 conditions, 2161 events. 1093/2161 cut-off events. For 1835/1915 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 13465 event pairs, 223 based on Foata normal form. 84/2241 useless extension candidates. Maximal degree in co-relation 3883. Up to 487 conditions per place. [2023-11-28 23:51:36,751 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 113 selfloop transitions, 13 changer transitions 0/133 dead transitions. [2023-11-28 23:51:36,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 133 transitions, 768 flow [2023-11-28 23:51:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:51:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:51:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2023-11-28 23:51:36,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2023-11-28 23:51:36,754 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 210 transitions. [2023-11-28 23:51:36,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 210 transitions. [2023-11-28 23:51:36,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:36,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 210 transitions. [2023-11-28 23:51:36,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 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) [2023-11-28 23:51:36,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 31.0) internal successors, (341), 11 states have internal predecessors, (341), 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) [2023-11-28 23:51:36,757 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 31.0) internal successors, (341), 11 states have internal predecessors, (341), 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) [2023-11-28 23:51:36,757 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 132 flow. Second operand 10 states and 210 transitions. [2023-11-28 23:51:36,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 133 transitions, 768 flow [2023-11-28 23:51:36,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 133 transitions, 740 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-28 23:51:36,764 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 206 flow [2023-11-28 23:51:36,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=206, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-11-28 23:51:36,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2023-11-28 23:51:36,765 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 206 flow [2023-11-28 23:51:36,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 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) [2023-11-28 23:51:36,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:36,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-28 23:51:36,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:51:36,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:36,967 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:51:36,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:36,967 INFO L85 PathProgramCache]: Analyzing trace with hash 170436272, now seen corresponding path program 1 times [2023-11-28 23:51:36,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:36,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973876515] [2023-11-28 23:51:36,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:36,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:37,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:37,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973876515] [2023-11-28 23:51:37,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973876515] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:51:37,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256636413] [2023-11-28 23:51:37,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:37,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:37,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:37,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:51:37,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:51:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:37,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:51:37,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:51:37,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:51:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:51:37,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256636413] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:51:37,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:51:37,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2023-11-28 23:51:37,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577022399] [2023-11-28 23:51:37,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:51:37,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:51:37,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:37,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:51:37,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:51:37,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-28 23:51:37,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 206 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 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) [2023-11-28 23:51:37,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:37,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-28 23:51:37,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:37,768 INFO L124 PetriNetUnfolderBase]: 1943/3705 cut-off events. [2023-11-28 23:51:37,768 INFO L125 PetriNetUnfolderBase]: For 3385/3547 co-relation queries the response was YES. [2023-11-28 23:51:37,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10456 conditions, 3705 events. 1943/3705 cut-off events. For 3385/3547 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 24344 event pairs, 213 based on Foata normal form. 0/3695 useless extension candidates. Maximal degree in co-relation 8938. Up to 940 conditions per place. [2023-11-28 23:51:37,803 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 110 selfloop transitions, 12 changer transitions 0/129 dead transitions. [2023-11-28 23:51:37,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 129 transitions, 861 flow [2023-11-28 23:51:37,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:51:37,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:51:37,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2023-11-28 23:51:37,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6200716845878136 [2023-11-28 23:51:37,814 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 173 transitions. [2023-11-28 23:51:37,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 173 transitions. [2023-11-28 23:51:37,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:37,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 173 transitions. [2023-11-28 23:51:37,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 19.22222222222222) internal successors, (173), 9 states have internal predecessors, (173), 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) [2023-11-28 23:51:37,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 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) [2023-11-28 23:51:37,817 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 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) [2023-11-28 23:51:37,817 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 206 flow. Second operand 9 states and 173 transitions. [2023-11-28 23:51:37,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 129 transitions, 861 flow [2023-11-28 23:51:37,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 129 transitions, 821 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-28 23:51:37,831 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 264 flow [2023-11-28 23:51:37,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=264, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2023-11-28 23:51:37,832 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2023-11-28 23:51:37,832 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 264 flow [2023-11-28 23:51:37,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 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) [2023-11-28 23:51:37,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:37,833 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:37,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:51:38,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:38,040 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:51:38,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:38,041 INFO L85 PathProgramCache]: Analyzing trace with hash 903396585, now seen corresponding path program 1 times [2023-11-28 23:51:38,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:38,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22973473] [2023-11-28 23:51:38,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:38,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:38,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:38,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22973473] [2023-11-28 23:51:38,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22973473] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:51:38,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8963352] [2023-11-28 23:51:38,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:38,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:38,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:38,110 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:51:38,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:51:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:38,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:51:38,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:51:38,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:51:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:51:38,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8963352] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:51:38,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:51:38,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 6 [2023-11-28 23:51:38,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584925794] [2023-11-28 23:51:38,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:51:38,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:51:38,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:38,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:51:38,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:51:38,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-28 23:51:38,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 264 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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) [2023-11-28 23:51:38,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:38,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-28 23:51:38,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:38,899 INFO L124 PetriNetUnfolderBase]: 2822/5405 cut-off events. [2023-11-28 23:51:38,899 INFO L125 PetriNetUnfolderBase]: For 7058/7094 co-relation queries the response was YES. [2023-11-28 23:51:38,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15322 conditions, 5405 events. 2822/5405 cut-off events. For 7058/7094 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 37902 event pairs, 489 based on Foata normal form. 0/5395 useless extension candidates. Maximal degree in co-relation 13657. Up to 1144 conditions per place. [2023-11-28 23:51:38,935 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 174 selfloop transitions, 7 changer transitions 18/205 dead transitions. [2023-11-28 23:51:38,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 205 transitions, 1685 flow [2023-11-28 23:51:38,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:51:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-28 23:51:38,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2023-11-28 23:51:38,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6330645161290323 [2023-11-28 23:51:38,937 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2023-11-28 23:51:38,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2023-11-28 23:51:38,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:38,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2023-11-28 23:51:38,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 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) [2023-11-28 23:51:38,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 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) [2023-11-28 23:51:38,940 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 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) [2023-11-28 23:51:38,940 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 264 flow. Second operand 8 states and 157 transitions. [2023-11-28 23:51:38,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 205 transitions, 1685 flow [2023-11-28 23:51:38,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 205 transitions, 1598 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-11-28 23:51:38,952 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 258 flow [2023-11-28 23:51:38,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=258, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2023-11-28 23:51:38,953 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2023-11-28 23:51:38,953 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 258 flow [2023-11-28 23:51:38,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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) [2023-11-28 23:51:38,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:38,954 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1] [2023-11-28 23:51:38,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:51:39,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:39,156 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:51:39,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:39,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1403383288, now seen corresponding path program 2 times [2023-11-28 23:51:39,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:39,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320584284] [2023-11-28 23:51:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:39,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:39,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:39,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320584284] [2023-11-28 23:51:39,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320584284] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:51:39,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498743775] [2023-11-28 23:51:39,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:51:39,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:39,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:39,316 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:51:39,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:51:39,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:51:39,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:51:39,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:51:39,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 23:51:39,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:51:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 23:51:39,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498743775] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:51:39,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:51:39,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2023-11-28 23:51:39,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424741571] [2023-11-28 23:51:39,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:51:39,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 23:51:39,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:39,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 23:51:39,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:51:39,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-28 23:51:39,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 258 flow. Second operand has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 14 states have internal predecessors, (174), 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) [2023-11-28 23:51:39,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:39,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-28 23:51:39,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:40,187 INFO L124 PetriNetUnfolderBase]: 2478/4684 cut-off events. [2023-11-28 23:51:40,187 INFO L125 PetriNetUnfolderBase]: For 7338/7338 co-relation queries the response was YES. [2023-11-28 23:51:40,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14323 conditions, 4684 events. 2478/4684 cut-off events. For 7338/7338 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 31047 event pairs, 251 based on Foata normal form. 120/4800 useless extension candidates. Maximal degree in co-relation 10881. Up to 761 conditions per place. [2023-11-28 23:51:40,198 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 0 selfloop transitions, 0 changer transitions 188/188 dead transitions. [2023-11-28 23:51:40,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 188 transitions, 1298 flow [2023-11-28 23:51:40,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:51:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-28 23:51:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 260 transitions. [2023-11-28 23:51:40,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5990783410138248 [2023-11-28 23:51:40,201 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 260 transitions. [2023-11-28 23:51:40,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 260 transitions. [2023-11-28 23:51:40,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:40,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 260 transitions. [2023-11-28 23:51:40,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 18.571428571428573) internal successors, (260), 14 states have internal predecessors, (260), 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) [2023-11-28 23:51:40,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 31.0) internal successors, (465), 15 states have internal predecessors, (465), 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) [2023-11-28 23:51:40,204 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 31.0) internal successors, (465), 15 states have internal predecessors, (465), 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) [2023-11-28 23:51:40,204 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 258 flow. Second operand 14 states and 260 transitions. [2023-11-28 23:51:40,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 188 transitions, 1298 flow [2023-11-28 23:51:40,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 188 transitions, 1115 flow, removed 50 selfloop flow, removed 9 redundant places. [2023-11-28 23:51:40,218 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2023-11-28 23:51:40,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2023-11-28 23:51:40,219 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2023-11-28 23:51:40,219 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2023-11-28 23:51:40,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 14 states have internal predecessors, (174), 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) [2023-11-28 23:51:40,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-11-28 23:51:40,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-11-28 23:51:40,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-11-28 23:51:40,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-11-28 23:51:40,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-11-28 23:51:40,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-11-28 23:51:40,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2023-11-28 23:51:40,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2023-11-28 23:51:40,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-11-28 23:51:40,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-11-28 23:51:40,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-11-28 23:51:40,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-11-28 23:51:40,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-11-28 23:51:40,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-11-28 23:51:40,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:51:40,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-28 23:51:40,427 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:40,431 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-28 23:51:40,431 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 23:51:40,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:51:40 BasicIcfg [2023-11-28 23:51:40,435 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 23:51:40,435 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 23:51:40,435 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 23:51:40,436 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 23:51:40,436 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:51:33" (3/4) ... [2023-11-28 23:51:40,438 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 23:51:40,440 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-28 23:51:40,440 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-28 23:51:40,445 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 82 nodes and edges [2023-11-28 23:51:40,445 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-28 23:51:40,446 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-28 23:51:40,446 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-28 23:51:40,517 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 23:51:40,518 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 23:51:40,518 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 23:51:40,519 INFO L158 Benchmark]: Toolchain (without parser) took 7904.08ms. Allocated memory was 146.8MB in the beginning and 230.7MB in the end (delta: 83.9MB). Free memory was 115.4MB in the beginning and 118.2MB in the end (delta: -2.8MB). Peak memory consumption was 82.7MB. Max. memory is 16.1GB. [2023-11-28 23:51:40,519 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 98.6MB. Free memory was 49.1MB in the beginning and 49.0MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 23:51:40,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.87ms. Allocated memory is still 146.8MB. Free memory was 115.4MB in the beginning and 104.4MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-28 23:51:40,520 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.32ms. Allocated memory is still 146.8MB. Free memory was 104.4MB in the beginning and 103.0MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 23:51:40,520 INFO L158 Benchmark]: Boogie Preprocessor took 48.06ms. Allocated memory is still 146.8MB. Free memory was 103.0MB in the beginning and 100.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 23:51:40,521 INFO L158 Benchmark]: RCFGBuilder took 591.32ms. Allocated memory is still 146.8MB. Free memory was 100.9MB in the beginning and 56.9MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-28 23:51:40,521 INFO L158 Benchmark]: TraceAbstraction took 6881.00ms. Allocated memory was 146.8MB in the beginning and 230.7MB in the end (delta: 83.9MB). Free memory was 56.2MB in the beginning and 123.1MB in the end (delta: -66.9MB). Peak memory consumption was 101.5MB. Max. memory is 16.1GB. [2023-11-28 23:51:40,521 INFO L158 Benchmark]: Witness Printer took 82.66ms. Allocated memory is still 230.7MB. Free memory was 123.1MB in the beginning and 118.2MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 23:51:40,523 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 98.6MB. Free memory was 49.1MB in the beginning and 49.0MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.87ms. Allocated memory is still 146.8MB. Free memory was 115.4MB in the beginning and 104.4MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.32ms. Allocated memory is still 146.8MB. Free memory was 104.4MB in the beginning and 103.0MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.06ms. Allocated memory is still 146.8MB. Free memory was 103.0MB in the beginning and 100.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 591.32ms. Allocated memory is still 146.8MB. Free memory was 100.9MB in the beginning and 56.9MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 6881.00ms. Allocated memory was 146.8MB in the beginning and 230.7MB in the end (delta: 83.9MB). Free memory was 56.2MB in the beginning and 123.1MB in the end (delta: -66.9MB). Peak memory consumption was 101.5MB. Max. memory is 16.1GB. * Witness Printer took 82.66ms. Allocated memory is still 230.7MB. Free memory was 123.1MB in the beginning and 118.2MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.8s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 710 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 680 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1246 IncrementalHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 11 mSDtfsCounter, 1246 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 87 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=264occurred in iteration=8, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 154 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 528 SizeOfPredicates, 13 NumberOfNonLiveVariables, 454 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 50/124 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-28 23:51:40,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2836c-ee37-450d-bb65-a037befcf2b8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE