./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2c89f010e0f73e8ba7e81bb150b82b70d39c0827c0d616dd2c3347839d51e01 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:03:49,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:03:50,023 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:03:50,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:03:50,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:03:50,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:03:50,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:03:50,075 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:03:50,076 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:03:50,077 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:03:50,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:03:50,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:03:50,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:03:50,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:03:50,082 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:03:50,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:03:50,086 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:03:50,087 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:03:50,087 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:03:50,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:03:50,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:03:50,089 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:03:50,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:03:50,091 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:03:50,091 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:03:50,091 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:03:50,092 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:03:50,092 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:03:50,093 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:03:50,093 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:03:50,094 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:03:50,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:03:50,095 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:03:50,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:03:50,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:50,096 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:03:50,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:03:50,097 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:03:50,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:03:50,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:03:50,098 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:03:50,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:03:50,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:03:50,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:03:50,100 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_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2c89f010e0f73e8ba7e81bb150b82b70d39c0827c0d616dd2c3347839d51e01 [2024-10-31 22:03:50,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:03:50,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:03:50,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:03:50,436 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:03:50,436 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:03:50,438 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c Unable to find full path for "g++" [2024-10-31 22:03:52,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:03:52,716 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:03:52,719 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2024-10-31 22:03:52,732 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/data/40255f401/128f9240db374b8599b8258e415f34f6/FLAG916ede8df [2024-10-31 22:03:52,752 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/data/40255f401/128f9240db374b8599b8258e415f34f6 [2024-10-31 22:03:52,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:03:52,758 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:03:52,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:52,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:03:52,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:03:52,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:52" (1/1) ... [2024-10-31 22:03:52,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283fbc74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:52, skipping insertion in model container [2024-10-31 22:03:52,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:52" (1/1) ... [2024-10-31 22:03:52,806 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:03:53,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:53,129 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:03:53,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:53,201 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:03:53,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:53 WrapperNode [2024-10-31 22:03:53,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:53,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:53,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:03:53,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:03:53,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:53" (1/1) ... [2024-10-31 22:03:53,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:53" (1/1) ... [2024-10-31 22:03:53,266 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 261 [2024-10-31 22:03:53,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:53,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:03:53,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:03:53,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:03:53,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:53" (1/1) ... [2024-10-31 22:03:53,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:53" (1/1) ... [2024-10-31 22:03:53,285 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:53" (1/1) ... [2024-10-31 22:03:53,303 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-31 22:03:53,303 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:53" (1/1) ... [2024-10-31 22:03:53,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:53" (1/1) ... [2024-10-31 22:03:53,320 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:53" (1/1) ... [2024-10-31 22:03:53,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:53" (1/1) ... [2024-10-31 22:03:53,333 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:53" (1/1) ... [2024-10-31 22:03:53,339 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:53" (1/1) ... [2024-10-31 22:03:53,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:03:53,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:03:53,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:03:53,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:03:53,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:53" (1/1) ... [2024-10-31 22:03:53,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:53,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:53,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:03:53,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:03:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:03:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:03:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:03:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:03:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:03:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:03:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:03:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:03:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:03:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:03:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:03:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:03:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:03:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:03:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:03:53,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:03:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:03:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:03:53,422 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:03:53,546 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:03:53,551 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:03:54,072 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:03:54,072 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:03:54,469 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:03:54,470 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-31 22:03:54,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:54 BoogieIcfgContainer [2024-10-31 22:03:54,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:03:54,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:03:54,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:03:54,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:03:54,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:03:52" (1/3) ... [2024-10-31 22:03:54,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca21897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:54, skipping insertion in model container [2024-10-31 22:03:54,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:53" (2/3) ... [2024-10-31 22:03:54,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca21897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:54, skipping insertion in model container [2024-10-31 22:03:54,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:54" (3/3) ... [2024-10-31 22:03:54,483 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2024-10-31 22:03:54,504 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:03:54,504 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-10-31 22:03:54,505 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:03:54,585 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:03:54,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 70 transitions, 161 flow [2024-10-31 22:03:54,685 INFO L124 PetriNetUnfolderBase]: 7/67 cut-off events. [2024-10-31 22:03:54,685 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:03:54,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 7/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 214 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-10-31 22:03:54,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 70 transitions, 161 flow [2024-10-31 22:03:54,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 65 transitions, 145 flow [2024-10-31 22:03:54,711 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:03:54,718 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5454cde2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:03:54,719 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-10-31 22:03:54,725 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:03:54,725 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:03:54,725 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:03:54,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:54,726 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:03:54,727 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:03:54,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:54,734 INFO L85 PathProgramCache]: Analyzing trace with hash 784264, now seen corresponding path program 1 times [2024-10-31 22:03:54,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:54,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384227883] [2024-10-31 22:03:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:54,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:55,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:55,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384227883] [2024-10-31 22:03:55,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384227883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:55,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:55,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:03:55,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711660680] [2024-10-31 22:03:55,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:55,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:03:55,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:55,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:55,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:55,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2024-10-31 22:03:55,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:55,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:55,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2024-10-31 22:03:55,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:56,017 INFO L124 PetriNetUnfolderBase]: 2220/3991 cut-off events. [2024-10-31 22:03:56,017 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2024-10-31 22:03:56,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7219 conditions, 3991 events. 2220/3991 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 27340 event pairs, 1926 based on Foata normal form. 257/3206 useless extension candidates. Maximal degree in co-relation 6836. Up to 3019 conditions per place. [2024-10-31 22:03:56,061 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 38 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-10-31 22:03:56,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 233 flow [2024-10-31 22:03:56,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:03:56,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:03:56,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-10-31 22:03:56,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-10-31 22:03:56,080 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 145 flow. Second operand 4 states and 144 transitions. [2024-10-31 22:03:56,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 233 flow [2024-10-31 22:03:56,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:03:56,095 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 182 flow [2024-10-31 22:03:56,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-10-31 22:03:56,102 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2024-10-31 22:03:56,103 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 182 flow [2024-10-31 22:03:56,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:56,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:56,104 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:03:56,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:03:56,105 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:03:56,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:56,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1889968140, now seen corresponding path program 1 times [2024-10-31 22:03:56,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:56,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469602572] [2024-10-31 22:03:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:56,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:56,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:56,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469602572] [2024-10-31 22:03:56,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469602572] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:03:56,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308388623] [2024-10-31 22:03:56,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:56,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:03:56,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:56,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:03:56,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:03:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:56,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:03:56,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:03:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:56,517 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:03:56,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308388623] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:56,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:03:56,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:03:56,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200926119] [2024-10-31 22:03:56,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:56,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:03:56,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:56,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:03:56,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:03:56,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2024-10-31 22:03:56,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:56,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:56,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2024-10-31 22:03:56,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:57,238 INFO L124 PetriNetUnfolderBase]: 2220/3989 cut-off events. [2024-10-31 22:03:57,239 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-10-31 22:03:57,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7174 conditions, 3989 events. 2220/3989 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 27310 event pairs, 1926 based on Foata normal form. 2/2952 useless extension candidates. Maximal degree in co-relation 7124. Up to 3009 conditions per place. [2024-10-31 22:03:57,272 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 31 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-10-31 22:03:57,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 260 flow [2024-10-31 22:03:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:03:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:03:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-10-31 22:03:57,275 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-10-31 22:03:57,277 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 182 flow. Second operand 6 states and 177 transitions. [2024-10-31 22:03:57,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 260 flow [2024-10-31 22:03:57,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 62 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:03:57,279 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 198 flow [2024-10-31 22:03:57,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-10-31 22:03:57,281 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2024-10-31 22:03:57,282 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 198 flow [2024-10-31 22:03:57,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:57,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:57,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:57,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:03:57,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-10-31 22:03:57,486 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:03:57,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:57,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1474741086, now seen corresponding path program 1 times [2024-10-31 22:03:57,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:57,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226605581] [2024-10-31 22:03:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:57,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:57,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:57,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226605581] [2024-10-31 22:03:57,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226605581] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:57,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:57,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:03:57,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936120531] [2024-10-31 22:03:57,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:57,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:03:57,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:57,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:57,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:57,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-10-31 22:03:57,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:57,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:57,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-10-31 22:03:57,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:58,372 INFO L124 PetriNetUnfolderBase]: 2360/4295 cut-off events. [2024-10-31 22:03:58,372 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-10-31 22:03:58,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7746 conditions, 4295 events. 2360/4295 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 29163 event pairs, 2053 based on Foata normal form. 98/3365 useless extension candidates. Maximal degree in co-relation 7128. Up to 3017 conditions per place. [2024-10-31 22:03:58,407 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 57 selfloop transitions, 3 changer transitions 1/82 dead transitions. [2024-10-31 22:03:58,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 394 flow [2024-10-31 22:03:58,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:03:58,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:03:58,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-10-31 22:03:58,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-10-31 22:03:58,410 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 198 flow. Second operand 4 states and 165 transitions. [2024-10-31 22:03:58,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 394 flow [2024-10-31 22:03:58,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 82 transitions, 352 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-10-31 22:03:58,413 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 189 flow [2024-10-31 22:03:58,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-10-31 22:03:58,415 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2024-10-31 22:03:58,415 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 189 flow [2024-10-31 22:03:58,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:58,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:58,416 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:03:58,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:03:58,416 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:03:58,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:58,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1540529003, now seen corresponding path program 1 times [2024-10-31 22:03:58,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:58,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872903463] [2024-10-31 22:03:58,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:58,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:58,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:58,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872903463] [2024-10-31 22:03:58,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872903463] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:03:58,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665307575] [2024-10-31 22:03:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:58,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:03:58,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:58,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:03:58,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:03:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:58,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:03:58,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:03:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:58,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:03:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:58,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665307575] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:03:58,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:03:58,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:03:58,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546853418] [2024-10-31 22:03:58,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:03:58,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:03:58,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:58,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:03:58,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:03:58,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2024-10-31 22:03:58,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 189 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:58,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:58,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2024-10-31 22:03:58,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:59,689 INFO L124 PetriNetUnfolderBase]: 2345/4187 cut-off events. [2024-10-31 22:03:59,690 INFO L125 PetriNetUnfolderBase]: For 392/392 co-relation queries the response was YES. [2024-10-31 22:03:59,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8371 conditions, 4187 events. 2345/4187 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 27933 event pairs, 2053 based on Foata normal form. 9/3180 useless extension candidates. Maximal degree in co-relation 7765. Up to 3246 conditions per place. [2024-10-31 22:03:59,722 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 36 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2024-10-31 22:03:59,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 395 flow [2024-10-31 22:03:59,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:03:59,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:03:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 287 transitions. [2024-10-31 22:03:59,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-10-31 22:03:59,725 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 189 flow. Second operand 10 states and 287 transitions. [2024-10-31 22:03:59,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 395 flow [2024-10-31 22:03:59,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 391 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-31 22:03:59,729 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 353 flow [2024-10-31 22:03:59,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=353, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2024-10-31 22:03:59,730 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 9 predicate places. [2024-10-31 22:03:59,730 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 353 flow [2024-10-31 22:03:59,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:59,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:59,731 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:59,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:03:59,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:03:59,933 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:03:59,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:59,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2107374810, now seen corresponding path program 1 times [2024-10-31 22:03:59,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:59,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651374286] [2024-10-31 22:03:59,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:59,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:00,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:00,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651374286] [2024-10-31 22:04:00,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651374286] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:00,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937603645] [2024-10-31 22:04:00,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:00,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:00,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:00,114 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:00,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:04:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:00,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:04:00,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:00,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:04:00,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937603645] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:00,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:04:00,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-31 22:04:00,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818288294] [2024-10-31 22:04:00,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:00,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:00,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:00,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:00,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:04:00,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-10-31 22:04:00,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:00,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:00,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-10-31 22:04:00,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:00,736 INFO L124 PetriNetUnfolderBase]: 1610/2940 cut-off events. [2024-10-31 22:04:00,736 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2024-10-31 22:04:00,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5728 conditions, 2940 events. 1610/2940 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 18209 event pairs, 1376 based on Foata normal form. 0/2465 useless extension candidates. Maximal degree in co-relation 5631. Up to 2260 conditions per place. [2024-10-31 22:04:00,768 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 55 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2024-10-31 22:04:00,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 77 transitions, 453 flow [2024-10-31 22:04:00,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-10-31 22:04:00,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2024-10-31 22:04:00,771 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 353 flow. Second operand 3 states and 113 transitions. [2024-10-31 22:04:00,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 77 transitions, 453 flow [2024-10-31 22:04:00,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 77 transitions, 421 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-31 22:04:00,779 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 311 flow [2024-10-31 22:04:00,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2024-10-31 22:04:00,781 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2024-10-31 22:04:00,783 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 311 flow [2024-10-31 22:04:00,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:00,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:00,783 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:00,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:04:00,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:00,989 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:00,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:00,990 INFO L85 PathProgramCache]: Analyzing trace with hash 519911160, now seen corresponding path program 1 times [2024-10-31 22:04:00,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:00,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164728854] [2024-10-31 22:04:00,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:00,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:01,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:01,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164728854] [2024-10-31 22:04:01,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164728854] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:01,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:01,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:04:01,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69454350] [2024-10-31 22:04:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:01,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:01,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:01,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:01,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:04:01,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-10-31 22:04:01,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:01,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:01,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-10-31 22:04:01,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:01,534 INFO L124 PetriNetUnfolderBase]: 1446/2656 cut-off events. [2024-10-31 22:04:01,534 INFO L125 PetriNetUnfolderBase]: For 400/400 co-relation queries the response was YES. [2024-10-31 22:04:01,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5306 conditions, 2656 events. 1446/2656 cut-off events. For 400/400 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 15760 event pairs, 508 based on Foata normal form. 64/2320 useless extension candidates. Maximal degree in co-relation 5292. Up to 1515 conditions per place. [2024-10-31 22:04:01,551 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 68 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2024-10-31 22:04:01,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 488 flow [2024-10-31 22:04:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:01,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:01,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-10-31 22:04:01,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-31 22:04:01,553 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 311 flow. Second operand 3 states and 126 transitions. [2024-10-31 22:04:01,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 488 flow [2024-10-31 22:04:01,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 91 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:01,559 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 324 flow [2024-10-31 22:04:01,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-10-31 22:04:01,560 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2024-10-31 22:04:01,560 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 324 flow [2024-10-31 22:04:01,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:01,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:01,561 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:01,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:04:01,561 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:01,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:01,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2037397929, now seen corresponding path program 1 times [2024-10-31 22:04:01,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:01,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904816045] [2024-10-31 22:04:01,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:01,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:01,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:01,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904816045] [2024-10-31 22:04:01,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904816045] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:01,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:01,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:04:01,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880660054] [2024-10-31 22:04:01,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:01,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:04:01,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:01,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:04:01,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:04:01,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-10-31 22:04:01,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:01,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:01,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-10-31 22:04:01,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:02,522 INFO L124 PetriNetUnfolderBase]: 2835/4987 cut-off events. [2024-10-31 22:04:02,522 INFO L125 PetriNetUnfolderBase]: For 881/881 co-relation queries the response was YES. [2024-10-31 22:04:02,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10475 conditions, 4987 events. 2835/4987 cut-off events. For 881/881 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 31930 event pairs, 1762 based on Foata normal form. 96/4583 useless extension candidates. Maximal degree in co-relation 10459. Up to 3069 conditions per place. [2024-10-31 22:04:02,562 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 94 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2024-10-31 22:04:02,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 116 transitions, 626 flow [2024-10-31 22:04:02,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-10-31 22:04:02,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-10-31 22:04:02,565 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 324 flow. Second operand 4 states and 165 transitions. [2024-10-31 22:04:02,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 116 transitions, 626 flow [2024-10-31 22:04:02,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 116 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:02,569 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 351 flow [2024-10-31 22:04:02,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-10-31 22:04:02,570 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 11 predicate places. [2024-10-31 22:04:02,574 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 351 flow [2024-10-31 22:04:02,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:02,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:02,575 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:02,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:04:02,576 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:02,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:02,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1564088713, now seen corresponding path program 1 times [2024-10-31 22:04:02,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:02,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477956539] [2024-10-31 22:04:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:02,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:02,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:02,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477956539] [2024-10-31 22:04:02,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477956539] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:02,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:02,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:02,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362325701] [2024-10-31 22:04:02,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:02,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:02,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:04:02,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-10-31 22:04:02,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:02,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:02,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-10-31 22:04:02,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:03,084 INFO L124 PetriNetUnfolderBase]: 1533/2899 cut-off events. [2024-10-31 22:04:03,085 INFO L125 PetriNetUnfolderBase]: For 899/1115 co-relation queries the response was YES. [2024-10-31 22:04:03,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6510 conditions, 2899 events. 1533/2899 cut-off events. For 899/1115 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17686 event pairs, 668 based on Foata normal form. 91/2700 useless extension candidates. Maximal degree in co-relation 6492. Up to 1981 conditions per place. [2024-10-31 22:04:03,105 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 65 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-10-31 22:04:03,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 90 transitions, 512 flow [2024-10-31 22:04:03,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:03,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-10-31 22:04:03,107 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2024-10-31 22:04:03,107 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 351 flow. Second operand 3 states and 121 transitions. [2024-10-31 22:04:03,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 90 transitions, 512 flow [2024-10-31 22:04:03,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 509 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:03,113 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 371 flow [2024-10-31 22:04:03,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-10-31 22:04:03,114 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2024-10-31 22:04:03,115 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 371 flow [2024-10-31 22:04:03,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:03,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:03,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:03,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:04:03,116 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:03,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:03,116 INFO L85 PathProgramCache]: Analyzing trace with hash -825632070, now seen corresponding path program 1 times [2024-10-31 22:04:03,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:03,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958180409] [2024-10-31 22:04:03,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:03,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:03,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:03,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958180409] [2024-10-31 22:04:03,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958180409] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:03,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:03,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:04:03,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818738846] [2024-10-31 22:04:03,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:03,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:04:03,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:03,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:04:03,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:04:03,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-10-31 22:04:03,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:03,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:03,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-10-31 22:04:03,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:03,726 INFO L124 PetriNetUnfolderBase]: 1852/3432 cut-off events. [2024-10-31 22:04:03,726 INFO L125 PetriNetUnfolderBase]: For 1873/2199 co-relation queries the response was YES. [2024-10-31 22:04:03,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8198 conditions, 3432 events. 1852/3432 cut-off events. For 1873/2199 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20771 event pairs, 1453 based on Foata normal form. 186/3330 useless extension candidates. Maximal degree in co-relation 8178. Up to 2196 conditions per place. [2024-10-31 22:04:03,753 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 68 selfloop transitions, 7 changer transitions 6/103 dead transitions. [2024-10-31 22:04:03,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 103 transitions, 610 flow [2024-10-31 22:04:03,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-10-31 22:04:03,755 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5607142857142857 [2024-10-31 22:04:03,755 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 371 flow. Second operand 4 states and 157 transitions. [2024-10-31 22:04:03,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 103 transitions, 610 flow [2024-10-31 22:04:03,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 103 transitions, 593 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:03,760 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 381 flow [2024-10-31 22:04:03,760 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=381, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-10-31 22:04:03,762 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2024-10-31 22:04:03,762 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 381 flow [2024-10-31 22:04:03,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:03,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:03,763 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-31 22:04:03,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:04:03,763 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:03,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:03,764 INFO L85 PathProgramCache]: Analyzing trace with hash 897612185, now seen corresponding path program 2 times [2024-10-31 22:04:03,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:03,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567809258] [2024-10-31 22:04:03,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:03,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:03,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:03,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567809258] [2024-10-31 22:04:03,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567809258] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:03,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395198653] [2024-10-31 22:04:03,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:04:03,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:03,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:03,989 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:03,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:04:04,076 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:04:04,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:04:04,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:04:04,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:04:04,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:04,201 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:04:04,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395198653] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:04,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:04,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-31 22:04:04,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046580079] [2024-10-31 22:04:04,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:04,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:04:04,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:04,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:04:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:04:04,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2024-10-31 22:04:04,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 381 flow. Second operand has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:04,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:04,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2024-10-31 22:04:04,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:05,119 INFO L124 PetriNetUnfolderBase]: 1855/3455 cut-off events. [2024-10-31 22:04:05,119 INFO L125 PetriNetUnfolderBase]: For 1346/1672 co-relation queries the response was YES. [2024-10-31 22:04:05,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7969 conditions, 3455 events. 1855/3455 cut-off events. For 1346/1672 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 21016 event pairs, 1453 based on Foata normal form. 114/3275 useless extension candidates. Maximal degree in co-relation 7948. Up to 2710 conditions per place. [2024-10-31 22:04:05,146 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 34 selfloop transitions, 34 changer transitions 0/88 dead transitions. [2024-10-31 22:04:05,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 88 transitions, 547 flow [2024-10-31 22:04:05,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-31 22:04:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-31 22:04:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 594 transitions. [2024-10-31 22:04:05,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3535714285714286 [2024-10-31 22:04:05,150 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 381 flow. Second operand 24 states and 594 transitions. [2024-10-31 22:04:05,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 88 transitions, 547 flow [2024-10-31 22:04:05,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 88 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:05,155 INFO L231 Difference]: Finished difference. Result has 107 places, 88 transitions, 485 flow [2024-10-31 22:04:05,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=485, PETRI_PLACES=107, PETRI_TRANSITIONS=88} [2024-10-31 22:04:05,157 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 39 predicate places. [2024-10-31 22:04:05,157 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 88 transitions, 485 flow [2024-10-31 22:04:05,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:05,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:05,158 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:05,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:04:05,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 22:04:05,358 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:05,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:05,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2134614333, now seen corresponding path program 1 times [2024-10-31 22:04:05,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:05,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005867969] [2024-10-31 22:04:05,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:05,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:05,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:05,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005867969] [2024-10-31 22:04:05,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005867969] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:05,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859596515] [2024-10-31 22:04:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:05,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:05,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:05,673 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:05,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:04:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:05,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:04:05,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:05,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:06,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859596515] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:06,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:06,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-31 22:04:06,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234572143] [2024-10-31 22:04:06,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:06,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:04:06,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:06,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:04:06,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:04:06,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2024-10-31 22:04:06,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 88 transitions, 485 flow. Second operand has 15 states, 15 states have (on average 23.6) internal successors, (354), 15 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:06,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:06,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2024-10-31 22:04:06,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:07,259 INFO L124 PetriNetUnfolderBase]: 3121/6018 cut-off events. [2024-10-31 22:04:07,259 INFO L125 PetriNetUnfolderBase]: For 2425/2827 co-relation queries the response was YES. [2024-10-31 22:04:07,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13715 conditions, 6018 events. 3121/6018 cut-off events. For 2425/2827 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 42810 event pairs, 2027 based on Foata normal form. 418/5909 useless extension candidates. Maximal degree in co-relation 13691. Up to 2533 conditions per place. [2024-10-31 22:04:07,311 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 102 selfloop transitions, 31 changer transitions 17/170 dead transitions. [2024-10-31 22:04:07,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 170 transitions, 1254 flow [2024-10-31 22:04:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:04:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 22:04:07,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 362 transitions. [2024-10-31 22:04:07,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.430952380952381 [2024-10-31 22:04:07,314 INFO L175 Difference]: Start difference. First operand has 107 places, 88 transitions, 485 flow. Second operand 12 states and 362 transitions. [2024-10-31 22:04:07,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 170 transitions, 1254 flow [2024-10-31 22:04:07,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 170 transitions, 1084 flow, removed 18 selfloop flow, removed 12 redundant places. [2024-10-31 22:04:07,326 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 651 flow [2024-10-31 22:04:07,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=651, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2024-10-31 22:04:07,327 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 44 predicate places. [2024-10-31 22:04:07,327 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 651 flow [2024-10-31 22:04:07,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.6) internal successors, (354), 15 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:07,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:07,329 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:07,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:04:07,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:07,529 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:07,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:07,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1817521894, now seen corresponding path program 1 times [2024-10-31 22:04:07,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:07,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807348227] [2024-10-31 22:04:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:07,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:07,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:07,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807348227] [2024-10-31 22:04:07,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807348227] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:07,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590065636] [2024-10-31 22:04:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:07,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:07,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:07,702 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:07,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:04:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:07,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:04:07,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:04:07,849 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:04:07,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590065636] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:07,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:04:07,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-10-31 22:04:07,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633571994] [2024-10-31 22:04:07,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:07,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:07,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:07,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:07,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:04:07,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-10-31 22:04:07,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 651 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:07,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:07,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-10-31 22:04:07,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:08,393 INFO L124 PetriNetUnfolderBase]: 2355/4714 cut-off events. [2024-10-31 22:04:08,394 INFO L125 PetriNetUnfolderBase]: For 2857/3181 co-relation queries the response was YES. [2024-10-31 22:04:08,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10862 conditions, 4714 events. 2355/4714 cut-off events. For 2857/3181 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 33652 event pairs, 1923 based on Foata normal form. 376/4724 useless extension candidates. Maximal degree in co-relation 10834. Up to 3564 conditions per place. [2024-10-31 22:04:08,433 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 81 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2024-10-31 22:04:08,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 103 transitions, 807 flow [2024-10-31 22:04:08,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:08,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-10-31 22:04:08,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-10-31 22:04:08,435 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 651 flow. Second operand 3 states and 110 transitions. [2024-10-31 22:04:08,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 103 transitions, 807 flow [2024-10-31 22:04:08,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 795 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-31 22:04:08,443 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 633 flow [2024-10-31 22:04:08,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=633, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2024-10-31 22:04:08,444 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 41 predicate places. [2024-10-31 22:04:08,444 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 633 flow [2024-10-31 22:04:08,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:08,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:08,445 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:08,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 22:04:08,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-31 22:04:08,649 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:08,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:08,650 INFO L85 PathProgramCache]: Analyzing trace with hash 784060487, now seen corresponding path program 2 times [2024-10-31 22:04:08,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:08,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520771119] [2024-10-31 22:04:08,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:08,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:04:08,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:08,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520771119] [2024-10-31 22:04:08,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520771119] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:08,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780969759] [2024-10-31 22:04:08,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:04:08,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:08,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:08,866 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:08,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:04:08,965 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:04:08,965 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:04:08,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:04:08,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:04:09,016 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:04:09,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780969759] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:09,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:04:09,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-31 22:04:09,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934722614] [2024-10-31 22:04:09,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:09,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:04:09,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:09,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:04:09,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:04:09,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2024-10-31 22:04:09,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 633 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:09,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:09,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2024-10-31 22:04:09,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:09,714 INFO L124 PetriNetUnfolderBase]: 3601/6603 cut-off events. [2024-10-31 22:04:09,714 INFO L125 PetriNetUnfolderBase]: For 3046/3046 co-relation queries the response was YES. [2024-10-31 22:04:09,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15616 conditions, 6603 events. 3601/6603 cut-off events. For 3046/3046 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 45726 event pairs, 1251 based on Foata normal form. 88/6249 useless extension candidates. Maximal degree in co-relation 15587. Up to 2097 conditions per place. [2024-10-31 22:04:09,758 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 109 selfloop transitions, 7 changer transitions 0/132 dead transitions. [2024-10-31 22:04:09,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 132 transitions, 947 flow [2024-10-31 22:04:09,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:09,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:09,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-10-31 22:04:09,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-10-31 22:04:09,760 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 633 flow. Second operand 4 states and 150 transitions. [2024-10-31 22:04:09,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 132 transitions, 947 flow [2024-10-31 22:04:09,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 132 transitions, 946 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:09,773 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 642 flow [2024-10-31 22:04:09,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=642, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-10-31 22:04:09,774 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 42 predicate places. [2024-10-31 22:04:09,774 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 642 flow [2024-10-31 22:04:09,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:09,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:09,775 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-31 22:04:09,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 22:04:09,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-31 22:04:09,975 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:09,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:09,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1065350139, now seen corresponding path program 1 times [2024-10-31 22:04:09,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:09,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509029935] [2024-10-31 22:04:09,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:09,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:10,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:10,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509029935] [2024-10-31 22:04:10,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509029935] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:10,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178783224] [2024-10-31 22:04:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:10,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:10,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:10,202 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:10,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 22:04:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:10,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:04:10,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:10,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:10,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178783224] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:10,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:10,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-31 22:04:10,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822562847] [2024-10-31 22:04:10,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:10,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-31 22:04:10,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:10,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-31 22:04:10,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-31 22:04:10,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2024-10-31 22:04:10,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 642 flow. Second operand has 28 states, 28 states have (on average 23.071428571428573) internal successors, (646), 28 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:10,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:10,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2024-10-31 22:04:10,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:11,549 INFO L124 PetriNetUnfolderBase]: 2383/4824 cut-off events. [2024-10-31 22:04:11,549 INFO L125 PetriNetUnfolderBase]: For 4509/4751 co-relation queries the response was YES. [2024-10-31 22:04:11,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11887 conditions, 4824 events. 2383/4824 cut-off events. For 4509/4751 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 34738 event pairs, 1923 based on Foata normal form. 185/4643 useless extension candidates. Maximal degree in co-relation 11858. Up to 3546 conditions per place. [2024-10-31 22:04:11,571 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 39 selfloop transitions, 100 changer transitions 0/158 dead transitions. [2024-10-31 22:04:11,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 158 transitions, 1466 flow [2024-10-31 22:04:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-31 22:04:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-31 22:04:11,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 682 transitions. [2024-10-31 22:04:11,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3747252747252747 [2024-10-31 22:04:11,575 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 642 flow. Second operand 26 states and 682 transitions. [2024-10-31 22:04:11,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 158 transitions, 1466 flow [2024-10-31 22:04:11,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 158 transitions, 1452 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:04:11,589 INFO L231 Difference]: Finished difference. Result has 139 places, 158 transitions, 1444 flow [2024-10-31 22:04:11,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1444, PETRI_PLACES=139, PETRI_TRANSITIONS=158} [2024-10-31 22:04:11,589 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 71 predicate places. [2024-10-31 22:04:11,590 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 158 transitions, 1444 flow [2024-10-31 22:04:11,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 23.071428571428573) internal successors, (646), 28 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:11,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:11,590 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:11,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-31 22:04:11,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-31 22:04:11,791 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:11,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1877513131, now seen corresponding path program 1 times [2024-10-31 22:04:11,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:11,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135301665] [2024-10-31 22:04:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:11,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:12,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:12,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135301665] [2024-10-31 22:04:12,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135301665] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:12,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710723208] [2024-10-31 22:04:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:12,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:12,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:12,356 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:12,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-31 22:04:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:12,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-31 22:04:12,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:12,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-31 22:04:12,886 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-31 22:04:12,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-31 22:04:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:12,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:13,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-10-31 22:04:13,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-10-31 22:04:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:13,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710723208] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:13,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:13,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2024-10-31 22:04:13,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708093582] [2024-10-31 22:04:13,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:13,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-31 22:04:13,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:13,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-31 22:04:13,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-10-31 22:04:13,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 70 [2024-10-31 22:04:13,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 158 transitions, 1444 flow. Second operand has 20 states, 20 states have (on average 20.25) internal successors, (405), 20 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:13,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:13,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 70 [2024-10-31 22:04:13,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:16,791 INFO L124 PetriNetUnfolderBase]: 7687/13236 cut-off events. [2024-10-31 22:04:16,791 INFO L125 PetriNetUnfolderBase]: For 7190/8040 co-relation queries the response was YES. [2024-10-31 22:04:16,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31456 conditions, 13236 events. 7687/13236 cut-off events. For 7190/8040 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 97420 event pairs, 2612 based on Foata normal form. 572/12542 useless extension candidates. Maximal degree in co-relation 31419. Up to 3043 conditions per place. [2024-10-31 22:04:16,921 INFO L140 encePairwiseOnDemand]: 59/70 looper letters, 180 selfloop transitions, 104 changer transitions 8/307 dead transitions. [2024-10-31 22:04:16,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 307 transitions, 2578 flow [2024-10-31 22:04:16,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-31 22:04:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-31 22:04:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 442 transitions. [2024-10-31 22:04:16,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42095238095238097 [2024-10-31 22:04:16,923 INFO L175 Difference]: Start difference. First operand has 139 places, 158 transitions, 1444 flow. Second operand 15 states and 442 transitions. [2024-10-31 22:04:16,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 307 transitions, 2578 flow [2024-10-31 22:04:16,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 307 transitions, 2287 flow, removed 92 selfloop flow, removed 12 redundant places. [2024-10-31 22:04:16,969 INFO L231 Difference]: Finished difference. Result has 145 places, 165 transitions, 1486 flow [2024-10-31 22:04:16,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1486, PETRI_PLACES=145, PETRI_TRANSITIONS=165} [2024-10-31 22:04:16,970 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 77 predicate places. [2024-10-31 22:04:16,970 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 165 transitions, 1486 flow [2024-10-31 22:04:16,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 20.25) internal successors, (405), 20 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:16,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:16,975 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:17,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-31 22:04:17,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-31 22:04:17,176 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:17,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:17,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1463927842, now seen corresponding path program 1 times [2024-10-31 22:04:17,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:17,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845599581] [2024-10-31 22:04:17,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:17,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:04:17,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:17,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845599581] [2024-10-31 22:04:17,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845599581] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:17,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859545422] [2024-10-31 22:04:17,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:17,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:17,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:17,268 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:17,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-31 22:04:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:17,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:04:17,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:04:17,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:04:17,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859545422] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:17,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:17,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-31 22:04:17,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588992642] [2024-10-31 22:04:17,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:17,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:04:17,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:17,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:04:17,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:04:17,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-10-31 22:04:17,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 165 transitions, 1486 flow. Second operand has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:17,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:17,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-10-31 22:04:17,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:20,560 INFO L124 PetriNetUnfolderBase]: 9273/17590 cut-off events. [2024-10-31 22:04:20,560 INFO L125 PetriNetUnfolderBase]: For 15860/16304 co-relation queries the response was YES. [2024-10-31 22:04:20,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44783 conditions, 17590 events. 9273/17590 cut-off events. For 15860/16304 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 140314 event pairs, 2814 based on Foata normal form. 0/17038 useless extension candidates. Maximal degree in co-relation 44743. Up to 6630 conditions per place. [2024-10-31 22:04:20,675 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 305 selfloop transitions, 13 changer transitions 0/337 dead transitions. [2024-10-31 22:04:20,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 337 transitions, 2840 flow [2024-10-31 22:04:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:04:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:04:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 393 transitions. [2024-10-31 22:04:20,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5614285714285714 [2024-10-31 22:04:20,678 INFO L175 Difference]: Start difference. First operand has 145 places, 165 transitions, 1486 flow. Second operand 10 states and 393 transitions. [2024-10-31 22:04:20,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 337 transitions, 2840 flow [2024-10-31 22:04:20,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 337 transitions, 2751 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-10-31 22:04:20,761 INFO L231 Difference]: Finished difference. Result has 152 places, 174 transitions, 1525 flow [2024-10-31 22:04:20,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1525, PETRI_PLACES=152, PETRI_TRANSITIONS=174} [2024-10-31 22:04:20,762 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 84 predicate places. [2024-10-31 22:04:20,762 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 174 transitions, 1525 flow [2024-10-31 22:04:20,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:20,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:20,763 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:20,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-31 22:04:20,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-31 22:04:20,967 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:20,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:20,967 INFO L85 PathProgramCache]: Analyzing trace with hash -256890160, now seen corresponding path program 1 times [2024-10-31 22:04:20,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:20,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925030645] [2024-10-31 22:04:20,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:20,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925030645] [2024-10-31 22:04:21,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925030645] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262589288] [2024-10-31 22:04:21,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:21,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:21,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:21,531 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:21,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_016f56bf-11ad-4543-9979-d83f9aa482bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-31 22:04:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-31 22:04:21,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:21,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-31 22:04:22,098 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-31 22:04:22,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-10-31 22:04:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:22,123 INFO L311 TraceCheckSpWp]: Computing backward predicates...