./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB --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 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:26:44,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:26:44,569 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:26:44,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:26:44,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:26:44,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:26:44,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:26:44,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:26:44,607 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:26:44,607 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:26:44,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:26:44,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:26:44,608 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:26:44,608 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:26:44,608 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:26:44,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:26:44,609 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:26:44,609 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:26:44,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:26:44,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:26:44,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:26:44,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:26:44,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:26:44,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:26:44,610 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:26:44,610 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:26:44,610 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:26:44,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:26:44,610 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:26:44,610 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:26:44,610 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:26:44,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:26:44,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:26:44,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:26:44,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:26:44,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:26:44,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:26:44,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:26:44,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:26:44,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:26:44,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:26:44,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:26:44,613 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:26:44,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:26:44,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:26:44,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:26:44,614 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:26:44,614 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:26:44,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:26:44,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:26:44,614 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c [2024-11-28 04:26:44,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:26:44,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:26:45,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:26:45,002 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:26:45,002 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:26:45,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2024-11-28 04:26:48,423 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/data/3819b6fa4/df67519279be4f5d8520ea231c2a3863/FLAG0a8eb3167 [2024-11-28 04:26:48,790 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:26:48,792 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2024-11-28 04:26:48,811 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/data/3819b6fa4/df67519279be4f5d8520ea231c2a3863/FLAG0a8eb3167 [2024-11-28 04:26:48,840 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/data/3819b6fa4/df67519279be4f5d8520ea231c2a3863 [2024-11-28 04:26:48,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:26:48,847 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:26:48,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:26:48,849 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:26:48,855 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:26:48,856 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:26:48" (1/1) ... [2024-11-28 04:26:48,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508b877f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:48, skipping insertion in model container [2024-11-28 04:26:48,857 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:26:48" (1/1) ... [2024-11-28 04:26:48,887 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:26:49,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:26:49,199 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:26:49,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:26:49,289 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:26:49,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49 WrapperNode [2024-11-28 04:26:49,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:26:49,292 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:26:49,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:26:49,293 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:26:49,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49" (1/1) ... [2024-11-28 04:26:49,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49" (1/1) ... [2024-11-28 04:26:49,359 INFO L138 Inliner]: procedures = 25, calls = 33, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 321 [2024-11-28 04:26:49,359 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:26:49,360 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:26:49,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:26:49,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:26:49,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49" (1/1) ... [2024-11-28 04:26:49,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49" (1/1) ... [2024-11-28 04:26:49,376 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49" (1/1) ... [2024-11-28 04:26:49,413 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-28 04:26:49,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49" (1/1) ... [2024-11-28 04:26:49,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49" (1/1) ... [2024-11-28 04:26:49,435 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49" (1/1) ... [2024-11-28 04:26:49,436 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49" (1/1) ... [2024-11-28 04:26:49,444 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49" (1/1) ... [2024-11-28 04:26:49,446 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49" (1/1) ... [2024-11-28 04:26:49,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49" (1/1) ... [2024-11-28 04:26:49,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:26:49,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:26:49,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:26:49,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:26:49,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49" (1/1) ... [2024-11-28 04:26:49,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:26:49,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:49,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:26:49,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:26:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:26:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:26:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:26:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:26:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:26:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 04:26:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 04:26:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:26:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:26:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:26:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:26:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:26:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:26:49,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:26:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:26:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:26:49,543 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:26:49,743 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:26:49,748 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:26:50,643 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:26:50,643 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:26:51,244 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:26:51,244 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 04:26:51,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:26:51 BoogieIcfgContainer [2024-11-28 04:26:51,245 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:26:51,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:26:51,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:26:51,253 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:26:51,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:26:48" (1/3) ... [2024-11-28 04:26:51,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff63177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:26:51, skipping insertion in model container [2024-11-28 04:26:51,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:49" (2/3) ... [2024-11-28 04:26:51,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff63177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:26:51, skipping insertion in model container [2024-11-28 04:26:51,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:26:51" (3/3) ... [2024-11-28 04:26:51,257 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2024-11-28 04:26:51,276 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:26:51,278 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-chromosome-subst.wvr.c that has 4 procedures, 96 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2024-11-28 04:26:51,278 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:26:51,387 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 04:26:51,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 107 transitions, 235 flow [2024-11-28 04:26:51,508 INFO L124 PetriNetUnfolderBase]: 12/104 cut-off events. [2024-11-28 04:26:51,510 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 04:26:51,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 104 events. 12/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 387 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2024-11-28 04:26:51,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 107 transitions, 235 flow [2024-11-28 04:26:51,567 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 102 transitions, 219 flow [2024-11-28 04:26:51,576 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:26:51,591 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;@2643a4a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:26:51,591 INFO L334 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-11-28 04:26:51,600 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:26:51,601 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 04:26:51,601 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:26:51,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:26:51,602 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:26:51,602 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-28 04:26:51,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:51,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1017892, now seen corresponding path program 1 times [2024-11-28 04:26:51,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:51,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028986034] [2024-11-28 04:26:51,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:51,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:52,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:52,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028986034] [2024-11-28 04:26:52,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028986034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:52,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:52,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:26:52,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657299709] [2024-11-28 04:26:52,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:52,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:26:52,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:52,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:26:52,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:26:52,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-28 04:26:52,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-11-28 04:26:52,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:26:52,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-28 04:26:52,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:26:54,129 INFO L124 PetriNetUnfolderBase]: 4133/8574 cut-off events. [2024-11-28 04:26:54,130 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-11-28 04:26:54,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14289 conditions, 8574 events. 4133/8574 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 75347 event pairs, 2732 based on Foata normal form. 3/6721 useless extension candidates. Maximal degree in co-relation 13590. Up to 5489 conditions per place. [2024-11-28 04:26:54,227 INFO L140 encePairwiseOnDemand]: 91/107 looper letters, 50 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2024-11-28 04:26:54,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 111 transitions, 357 flow [2024-11-28 04:26:54,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:26:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:26:54,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2024-11-28 04:26:54,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6588785046728972 [2024-11-28 04:26:54,252 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 219 flow. Second operand 4 states and 282 transitions. [2024-11-28 04:26:54,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 111 transitions, 357 flow [2024-11-28 04:26:54,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 111 transitions, 348 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 04:26:54,279 INFO L231 Difference]: Finished difference. Result has 101 places, 111 transitions, 298 flow [2024-11-28 04:26:54,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=101, PETRI_TRANSITIONS=111} [2024-11-28 04:26:54,289 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2024-11-28 04:26:54,290 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 111 transitions, 298 flow [2024-11-28 04:26:54,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-11-28 04:26:54,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:26:54,290 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 04:26:54,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:26:54,292 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-28 04:26:54,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:54,294 INFO L85 PathProgramCache]: Analyzing trace with hash 260256821, now seen corresponding path program 1 times [2024-11-28 04:26:54,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:54,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650552781] [2024-11-28 04:26:54,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:54,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:54,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:54,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650552781] [2024-11-28 04:26:54,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650552781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:54,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927412859] [2024-11-28 04:26:54,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:54,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:54,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:54,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:54,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:26:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:54,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:26:54,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:54,734 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:26:54,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927412859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:54,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:26:54,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:26:54,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905768388] [2024-11-28 04:26:54,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:54,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:26:54,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:54,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:26:54,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:26:54,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-28 04:26:54,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 111 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 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) [2024-11-28 04:26:54,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:26:54,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-28 04:26:54,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:26:56,256 INFO L124 PetriNetUnfolderBase]: 4133/8571 cut-off events. [2024-11-28 04:26:56,257 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-28 04:26:56,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14235 conditions, 8571 events. 4133/8571 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 75253 event pairs, 2732 based on Foata normal form. 3/6723 useless extension candidates. Maximal degree in co-relation 14162. Up to 5474 conditions per place. [2024-11-28 04:26:56,333 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 40 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-11-28 04:26:56,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 108 transitions, 400 flow [2024-11-28 04:26:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:26:56,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:26:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 384 transitions. [2024-11-28 04:26:56,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5981308411214953 [2024-11-28 04:26:56,342 INFO L175 Difference]: Start difference. First operand has 101 places, 111 transitions, 298 flow. Second operand 6 states and 384 transitions. [2024-11-28 04:26:56,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 108 transitions, 400 flow [2024-11-28 04:26:56,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 108 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:26:56,348 INFO L231 Difference]: Finished difference. Result has 103 places, 108 transitions, 320 flow [2024-11-28 04:26:56,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=103, PETRI_TRANSITIONS=108} [2024-11-28 04:26:56,350 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 3 predicate places. [2024-11-28 04:26:56,351 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 108 transitions, 320 flow [2024-11-28 04:26:56,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 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) [2024-11-28 04:26:56,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:26:56,353 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 04:26:56,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:26:56,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:56,557 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-28 04:26:56,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:56,558 INFO L85 PathProgramCache]: Analyzing trace with hash -521972126, now seen corresponding path program 1 times [2024-11-28 04:26:56,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:56,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978774705] [2024-11-28 04:26:56,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:56,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:56,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:56,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978774705] [2024-11-28 04:26:56,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978774705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:56,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085443459] [2024-11-28 04:26:56,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:56,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:56,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:56,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:56,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:26:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:56,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:26:56,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:56,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:26:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:57,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085443459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:26:57,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:26:57,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 04:26:57,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534405302] [2024-11-28 04:26:57,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:26:57,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:26:57,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:57,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:26:57,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:26:57,087 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-28 04:26:57,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 108 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 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) [2024-11-28 04:26:57,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:26:57,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-28 04:26:57,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:26:58,687 INFO L124 PetriNetUnfolderBase]: 4142/8607 cut-off events. [2024-11-28 04:26:58,688 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-28 04:26:58,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14376 conditions, 8607 events. 4142/8607 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 75783 event pairs, 2732 based on Foata normal form. 9/6765 useless extension candidates. Maximal degree in co-relation 14164. Up to 5489 conditions per place. [2024-11-28 04:26:58,755 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 47 selfloop transitions, 37 changer transitions 0/135 dead transitions. [2024-11-28 04:26:58,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 135 transitions, 662 flow [2024-11-28 04:26:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:26:58,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:26:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 633 transitions. [2024-11-28 04:26:58,761 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.591588785046729 [2024-11-28 04:26:58,761 INFO L175 Difference]: Start difference. First operand has 103 places, 108 transitions, 320 flow. Second operand 10 states and 633 transitions. [2024-11-28 04:26:58,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 135 transitions, 662 flow [2024-11-28 04:26:58,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 135 transitions, 579 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-28 04:26:58,769 INFO L231 Difference]: Finished difference. Result has 110 places, 135 transitions, 535 flow [2024-11-28 04:26:58,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=535, PETRI_PLACES=110, PETRI_TRANSITIONS=135} [2024-11-28 04:26:58,771 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 10 predicate places. [2024-11-28 04:26:58,772 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 135 transitions, 535 flow [2024-11-28 04:26:58,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 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) [2024-11-28 04:26:58,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:26:58,773 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:58,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:26:58,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:58,978 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-28 04:26:58,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:58,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1807104636, now seen corresponding path program 1 times [2024-11-28 04:26:58,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:58,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767448049] [2024-11-28 04:26:58,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:58,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:59,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:59,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767448049] [2024-11-28 04:26:59,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767448049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:59,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:59,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:26:59,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451209403] [2024-11-28 04:26:59,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:59,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:26:59,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:59,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:26:59,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:26:59,222 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-28 04:26:59,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 135 transitions, 535 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2024-11-28 04:26:59,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:26:59,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-28 04:26:59,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:27:00,866 INFO L124 PetriNetUnfolderBase]: 8073/14774 cut-off events. [2024-11-28 04:27:00,866 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-11-28 04:27:00,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25950 conditions, 14774 events. 8073/14774 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 126870 event pairs, 2473 based on Foata normal form. 364/12263 useless extension candidates. Maximal degree in co-relation 25852. Up to 5062 conditions per place. [2024-11-28 04:27:00,967 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 131 selfloop transitions, 5 changer transitions 0/184 dead transitions. [2024-11-28 04:27:00,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 184 transitions, 911 flow [2024-11-28 04:27:00,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:27:00,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:27:00,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-11-28 04:27:00,970 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7453271028037384 [2024-11-28 04:27:00,970 INFO L175 Difference]: Start difference. First operand has 110 places, 135 transitions, 535 flow. Second operand 4 states and 319 transitions. [2024-11-28 04:27:00,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 184 transitions, 911 flow [2024-11-28 04:27:00,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 184 transitions, 874 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-28 04:27:00,980 INFO L231 Difference]: Finished difference. Result has 113 places, 137 transitions, 532 flow [2024-11-28 04:27:00,980 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=532, PETRI_PLACES=113, PETRI_TRANSITIONS=137} [2024-11-28 04:27:00,981 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 13 predicate places. [2024-11-28 04:27:00,981 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 137 transitions, 532 flow [2024-11-28 04:27:00,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2024-11-28 04:27:00,981 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:27:00,981 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:27:00,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:27:00,982 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-28 04:27:00,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash -185667768, now seen corresponding path program 1 times [2024-11-28 04:27:00,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:00,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695657025] [2024-11-28 04:27:00,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:00,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:01,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:01,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695657025] [2024-11-28 04:27:01,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695657025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:27:01,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:27:01,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:27:01,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243912231] [2024-11-28 04:27:01,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:27:01,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:27:01,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:01,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:27:01,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:27:01,152 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 107 [2024-11-28 04:27:01,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 137 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-11-28 04:27:01,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:27:01,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 107 [2024-11-28 04:27:01,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:27:02,515 INFO L124 PetriNetUnfolderBase]: 5184/10990 cut-off events. [2024-11-28 04:27:02,516 INFO L125 PetriNetUnfolderBase]: For 1932/2198 co-relation queries the response was YES. [2024-11-28 04:27:02,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19701 conditions, 10990 events. 5184/10990 cut-off events. For 1932/2198 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 102140 event pairs, 3504 based on Foata normal form. 138/8944 useless extension candidates. Maximal degree in co-relation 19605. Up to 6912 conditions per place. [2024-11-28 04:27:02,605 INFO L140 encePairwiseOnDemand]: 100/107 looper letters, 68 selfloop transitions, 12 changer transitions 0/134 dead transitions. [2024-11-28 04:27:02,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 134 transitions, 679 flow [2024-11-28 04:27:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:27:02,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:27:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2024-11-28 04:27:02,608 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7289719626168224 [2024-11-28 04:27:02,608 INFO L175 Difference]: Start difference. First operand has 113 places, 137 transitions, 532 flow. Second operand 3 states and 234 transitions. [2024-11-28 04:27:02,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 134 transitions, 679 flow [2024-11-28 04:27:02,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 134 transitions, 667 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:27:02,648 INFO L231 Difference]: Finished difference. Result has 114 places, 134 transitions, 531 flow [2024-11-28 04:27:02,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=531, PETRI_PLACES=114, PETRI_TRANSITIONS=134} [2024-11-28 04:27:02,649 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 14 predicate places. [2024-11-28 04:27:02,649 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 134 transitions, 531 flow [2024-11-28 04:27:02,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-11-28 04:27:02,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:27:02,649 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-28 04:27:02,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:27:02,650 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-28 04:27:02,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:02,651 INFO L85 PathProgramCache]: Analyzing trace with hash 131328915, now seen corresponding path program 2 times [2024-11-28 04:27:02,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:02,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221684973] [2024-11-28 04:27:02,651 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:27:02,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:02,669 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:27:02,670 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:27:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:27:02,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:02,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221684973] [2024-11-28 04:27:02,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221684973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:27:02,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906354323] [2024-11-28 04:27:02,731 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:27:02,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:27:02,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:27:02,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:27:02,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:27:02,833 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:27:02,833 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:27:02,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:27:02,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:27:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:27:02,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:27:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:27:02,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906354323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:27:02,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:27:02,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-28 04:27:02,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005098742] [2024-11-28 04:27:02,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:27:02,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:27:02,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:02,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:27:02,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:27:02,952 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-28 04:27:02,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 134 transitions, 531 flow. Second operand has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 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) [2024-11-28 04:27:02,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:27:02,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-28 04:27:02,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:27:04,294 INFO L124 PetriNetUnfolderBase]: 5184/10987 cut-off events. [2024-11-28 04:27:04,295 INFO L125 PetriNetUnfolderBase]: For 1944/2210 co-relation queries the response was YES. [2024-11-28 04:27:04,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19690 conditions, 10987 events. 5184/10987 cut-off events. For 1944/2210 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 102156 event pairs, 3504 based on Foata normal form. 138/8943 useless extension candidates. Maximal degree in co-relation 19608. Up to 6885 conditions per place. [2024-11-28 04:27:04,385 INFO L140 encePairwiseOnDemand]: 96/107 looper letters, 45 selfloop transitions, 35 changer transitions 0/131 dead transitions. [2024-11-28 04:27:04,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 131 transitions, 661 flow [2024-11-28 04:27:04,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:27:04,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:27:04,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 264 transitions. [2024-11-28 04:27:04,387 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.616822429906542 [2024-11-28 04:27:04,388 INFO L175 Difference]: Start difference. First operand has 114 places, 134 transitions, 531 flow. Second operand 4 states and 264 transitions. [2024-11-28 04:27:04,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 131 transitions, 661 flow [2024-11-28 04:27:04,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 131 transitions, 607 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-28 04:27:04,435 INFO L231 Difference]: Finished difference. Result has 108 places, 131 transitions, 517 flow [2024-11-28 04:27:04,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=517, PETRI_PLACES=108, PETRI_TRANSITIONS=131} [2024-11-28 04:27:04,436 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 8 predicate places. [2024-11-28 04:27:04,436 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 131 transitions, 517 flow [2024-11-28 04:27:04,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 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) [2024-11-28 04:27:04,437 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:27:04,437 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:27:04,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:27:04,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:27:04,638 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-28 04:27:04,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:04,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1891066044, now seen corresponding path program 1 times [2024-11-28 04:27:04,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:04,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611413610] [2024-11-28 04:27:04,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:04,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:27:04,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:04,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611413610] [2024-11-28 04:27:04,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611413610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:27:04,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032614391] [2024-11-28 04:27:04,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:04,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:27:04,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:27:04,905 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:27:04,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:27:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:05,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:27:05,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:27:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:27:05,100 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:27:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:27:05,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032614391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:27:05,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:27:05,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 04:27:05,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685494070] [2024-11-28 04:27:05,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:27:05,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:27:05,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:05,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:27:05,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:27:05,196 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-28 04:27:05,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 131 transitions, 517 flow. Second operand has 11 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 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) [2024-11-28 04:27:05,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:27:05,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-28 04:27:05,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:27:06,261 INFO L124 PetriNetUnfolderBase]: 5178/10981 cut-off events. [2024-11-28 04:27:06,262 INFO L125 PetriNetUnfolderBase]: For 1941/2207 co-relation queries the response was YES. [2024-11-28 04:27:06,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19674 conditions, 10981 events. 5178/10981 cut-off events. For 1941/2207 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 101925 event pairs, 3504 based on Foata normal form. 139/8937 useless extension candidates. Maximal degree in co-relation 19481. Up to 6892 conditions per place. [2024-11-28 04:27:06,305 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 42 selfloop transitions, 32 changer transitions 0/125 dead transitions. [2024-11-28 04:27:06,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 125 transitions, 631 flow [2024-11-28 04:27:06,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:27:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:27:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 444 transitions. [2024-11-28 04:27:06,308 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5927903871829105 [2024-11-28 04:27:06,308 INFO L175 Difference]: Start difference. First operand has 108 places, 131 transitions, 517 flow. Second operand 7 states and 444 transitions. [2024-11-28 04:27:06,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 125 transitions, 631 flow [2024-11-28 04:27:06,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 125 transitions, 565 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:27:06,337 INFO L231 Difference]: Finished difference. Result has 111 places, 125 transitions, 481 flow [2024-11-28 04:27:06,337 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=481, PETRI_PLACES=111, PETRI_TRANSITIONS=125} [2024-11-28 04:27:06,338 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2024-11-28 04:27:06,338 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 125 transitions, 481 flow [2024-11-28 04:27:06,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 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) [2024-11-28 04:27:06,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:27:06,339 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:27:06,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:27:06,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:27:06,539 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-28 04:27:06,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:06,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1446010556, now seen corresponding path program 2 times [2024-11-28 04:27:06,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:06,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609615717] [2024-11-28 04:27:06,540 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:27:06,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:06,614 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:27:06,614 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:27:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:27:06,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:06,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609615717] [2024-11-28 04:27:06,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609615717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:27:06,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425928016] [2024-11-28 04:27:06,989 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:27:06,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:27:06,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:27:06,994 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:27:06,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:27:07,168 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:27:07,169 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:27:07,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:27:07,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:27:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:27:07,380 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:27:07,504 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:27:07,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425928016] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:27:07,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:27:07,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-28 04:27:07,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573374008] [2024-11-28 04:27:07,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:27:07,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:27:07,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:07,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:27:07,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:27:07,582 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-28 04:27:07,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 125 transitions, 481 flow. Second operand has 18 states, 18 states have (on average 55.611111111111114) internal successors, (1001), 18 states have internal predecessors, (1001), 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) [2024-11-28 04:27:07,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:27:07,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-28 04:27:07,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:27:08,945 INFO L124 PetriNetUnfolderBase]: 5175/10981 cut-off events. [2024-11-28 04:27:08,945 INFO L125 PetriNetUnfolderBase]: For 1941/2207 co-relation queries the response was YES. [2024-11-28 04:27:08,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19677 conditions, 10981 events. 5175/10981 cut-off events. For 1941/2207 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 101963 event pairs, 3504 based on Foata normal form. 137/8935 useless extension candidates. Maximal degree in co-relation 19484. Up to 6885 conditions per place. [2024-11-28 04:27:08,993 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 41 selfloop transitions, 33 changer transitions 0/125 dead transitions. [2024-11-28 04:27:08,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 125 transitions, 634 flow [2024-11-28 04:27:08,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:27:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 04:27:08,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 672 transitions. [2024-11-28 04:27:08,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5709430756159728 [2024-11-28 04:27:08,997 INFO L175 Difference]: Start difference. First operand has 111 places, 125 transitions, 481 flow. Second operand 11 states and 672 transitions. [2024-11-28 04:27:08,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 125 transitions, 634 flow [2024-11-28 04:27:09,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 125 transitions, 610 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:27:09,020 INFO L231 Difference]: Finished difference. Result has 119 places, 125 transitions, 554 flow [2024-11-28 04:27:09,020 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=554, PETRI_PLACES=119, PETRI_TRANSITIONS=125} [2024-11-28 04:27:09,021 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 19 predicate places. [2024-11-28 04:27:09,021 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 125 transitions, 554 flow [2024-11-28 04:27:09,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 55.611111111111114) internal successors, (1001), 18 states have internal predecessors, (1001), 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) [2024-11-28 04:27:09,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:27:09,022 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:27:09,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:27:09,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:27:09,223 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-28 04:27:09,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:09,223 INFO L85 PathProgramCache]: Analyzing trace with hash 677749572, now seen corresponding path program 3 times [2024-11-28 04:27:09,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:09,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455155918] [2024-11-28 04:27:09,223 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:27:09,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:09,475 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 04:27:09,479 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:27:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 04:27:13,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:13,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455155918] [2024-11-28 04:27:13,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455155918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:27:13,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656625127] [2024-11-28 04:27:13,168 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:27:13,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:27:13,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:27:13,171 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:27:13,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:27:13,452 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 04:27:13,452 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:27:13,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:27:13,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:27:13,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 04:27:13,565 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 15 treesize of output 1 [2024-11-28 04:27:13,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:27:13,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 04:27:13,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:27:13,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 04:27:14,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:27:14,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 04:27:14,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:27:14,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 04:27:14,284 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:27:14,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-28 04:27:14,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 04:27:14,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 04:27:14,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 04:27:14,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 04:27:14,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 04:27:14,489 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 15 treesize of output 7 [2024-11-28 04:27:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-28 04:27:14,531 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:27:14,662 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_221 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_221) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2024-11-28 04:28:54,454 INFO L349 Elim1Store]: treesize reduction 244, result has 20.0 percent of original size [2024-11-28 04:28:54,454 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 71 [2024-11-28 04:28:54,476 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:28:54,476 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 33 treesize of output 29 [2024-11-28 04:28:54,483 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 9 treesize of output 7 [2024-11-28 04:28:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 13 proven. 20 refuted. 2 times theorem prover too weak. 57 trivial. 13 not checked. [2024-11-28 04:28:54,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656625127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:28:54,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:28:54,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15] total 44 [2024-11-28 04:28:54,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224322285] [2024-11-28 04:28:54,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:28:54,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 04:28:54,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:28:54,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 04:28:54,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1613, Unknown=23, NotChecked=84, Total=1980 [2024-11-28 04:28:57,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:29:01,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:29:05,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:29:09,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:29:13,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:29:17,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:29:21,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:29:25,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:29:28,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:29:30,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:29:33,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:29:36,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:29:38,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:29:38,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 107 [2024-11-28 04:29:38,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 125 transitions, 554 flow. Second operand has 45 states, 45 states have (on average 44.0) internal successors, (1980), 45 states have internal predecessors, (1980), 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) [2024-11-28 04:29:38,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:38,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 107 [2024-11-28 04:29:38,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:47,782 INFO L124 PetriNetUnfolderBase]: 26090/38625 cut-off events. [2024-11-28 04:29:47,782 INFO L125 PetriNetUnfolderBase]: For 3301/3385 co-relation queries the response was YES. [2024-11-28 04:29:47,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80080 conditions, 38625 events. 26090/38625 cut-off events. For 3301/3385 co-relation queries the response was YES. Maximal size of possible extension queue 1335. Compared 275857 event pairs, 6133 based on Foata normal form. 84/34289 useless extension candidates. Maximal degree in co-relation 79837. Up to 12435 conditions per place. [2024-11-28 04:29:47,941 INFO L140 encePairwiseOnDemand]: 89/107 looper letters, 173 selfloop transitions, 47 changer transitions 0/259 dead transitions. [2024-11-28 04:29:47,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 259 transitions, 1304 flow [2024-11-28 04:29:47,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 04:29:47,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-28 04:29:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1349 transitions. [2024-11-28 04:29:47,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4669435790931118 [2024-11-28 04:29:47,947 INFO L175 Difference]: Start difference. First operand has 119 places, 125 transitions, 554 flow. Second operand 27 states and 1349 transitions. [2024-11-28 04:29:47,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 259 transitions, 1304 flow [2024-11-28 04:29:48,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 259 transitions, 1256 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 04:29:48,037 INFO L231 Difference]: Finished difference. Result has 140 places, 133 transitions, 662 flow [2024-11-28 04:29:48,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=662, PETRI_PLACES=140, PETRI_TRANSITIONS=133} [2024-11-28 04:29:48,038 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 40 predicate places. [2024-11-28 04:29:48,038 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 133 transitions, 662 flow [2024-11-28 04:29:48,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 44.0) internal successors, (1980), 45 states have internal predecessors, (1980), 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) [2024-11-28 04:29:48,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:48,039 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:48,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:29:48,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:48,243 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-28 04:29:48,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1037362072, now seen corresponding path program 1 times [2024-11-28 04:29:48,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:48,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768563987] [2024-11-28 04:29:48,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:48,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:48,434 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 04:29:48,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:48,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768563987] [2024-11-28 04:29:48,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768563987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:48,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:48,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:29:48,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258784995] [2024-11-28 04:29:48,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:48,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:29:48,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:48,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:29:48,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:29:48,470 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-28 04:29:48,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 133 transitions, 662 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2024-11-28 04:29:48,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:29:48,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-28 04:29:48,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:29:53,313 INFO L124 PetriNetUnfolderBase]: 20880/38045 cut-off events. [2024-11-28 04:29:53,313 INFO L125 PetriNetUnfolderBase]: For 23078/24405 co-relation queries the response was YES. [2024-11-28 04:29:53,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80290 conditions, 38045 events. 20880/38045 cut-off events. For 23078/24405 co-relation queries the response was YES. Maximal size of possible extension queue 1416. Compared 355970 event pairs, 7221 based on Foata normal form. 1540/33612 useless extension candidates. Maximal degree in co-relation 80046. Up to 13592 conditions per place. [2024-11-28 04:29:53,800 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 147 selfloop transitions, 5 changer transitions 0/198 dead transitions. [2024-11-28 04:29:53,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 198 transitions, 1250 flow [2024-11-28 04:29:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:29:53,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:29:53,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2024-11-28 04:29:53,802 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7406542056074766 [2024-11-28 04:29:53,802 INFO L175 Difference]: Start difference. First operand has 140 places, 133 transitions, 662 flow. Second operand 4 states and 317 transitions. [2024-11-28 04:29:53,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 198 transitions, 1250 flow [2024-11-28 04:29:53,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 198 transitions, 1045 flow, removed 13 selfloop flow, removed 16 redundant places. [2024-11-28 04:29:53,875 INFO L231 Difference]: Finished difference. Result has 129 places, 135 transitions, 495 flow [2024-11-28 04:29:53,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=495, PETRI_PLACES=129, PETRI_TRANSITIONS=135} [2024-11-28 04:29:53,876 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 29 predicate places. [2024-11-28 04:29:53,876 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 135 transitions, 495 flow [2024-11-28 04:29:53,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2024-11-28 04:29:53,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:29:53,877 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:53,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:29:53,877 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-28 04:29:53,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:53,878 INFO L85 PathProgramCache]: Analyzing trace with hash -464630420, now seen corresponding path program 1 times [2024-11-28 04:29:53,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:53,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82680488] [2024-11-28 04:29:53,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:53,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-28 04:29:55,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:55,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82680488] [2024-11-28 04:29:55,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82680488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:29:55,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358557] [2024-11-28 04:29:55,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:55,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:55,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:55,730 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:55,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:29:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:55,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 04:29:55,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:55,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 04:29:55,970 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 15 treesize of output 1 [2024-11-28 04:29:56,081 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 04:29:56,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-28 04:29:56,209 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 04:29:56,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-28 04:29:56,366 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 04:29:56,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-28 04:29:56,506 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 04:29:56,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-28 04:29:56,558 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:29:56,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-28 04:29:56,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:29:56,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:29:56,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:29:56,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:29:56,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:29:56,849 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 17 treesize of output 9 [2024-11-28 04:29:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-28 04:29:56,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:29:57,040 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_343 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_343) c_~o_2~0.base) c_~o_2~0.offset) 4294967296))) is different from false [2024-11-28 04:30:56,261 INFO L349 Elim1Store]: treesize reduction 139, result has 26.1 percent of original size [2024-11-28 04:30:56,261 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 61 [2024-11-28 04:30:56,278 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:30:56,279 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 39 treesize of output 35 [2024-11-28 04:30:56,287 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 11 treesize of output 9 [2024-11-28 04:30:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 60 trivial. 13 not checked. [2024-11-28 04:30:56,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:56,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:56,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 13] total 41 [2024-11-28 04:30:56,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925291831] [2024-11-28 04:30:56,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:56,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-28 04:30:56,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:56,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-28 04:30:56,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1438, Unknown=14, NotChecked=78, Total=1722 [2024-11-28 04:30:56,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 107 [2024-11-28 04:30:56,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 135 transitions, 495 flow. Second operand has 42 states, 42 states have (on average 44.07142857142857) internal successors, (1851), 42 states have internal predecessors, (1851), 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) [2024-11-28 04:30:56,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:30:56,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 107 [2024-11-28 04:30:56,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:31:06,408 INFO L124 PetriNetUnfolderBase]: 30830/48080 cut-off events. [2024-11-28 04:31:06,408 INFO L125 PetriNetUnfolderBase]: For 23713/25622 co-relation queries the response was YES. [2024-11-28 04:31:06,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110810 conditions, 48080 events. 30830/48080 cut-off events. For 23713/25622 co-relation queries the response was YES. Maximal size of possible extension queue 1720. Compared 383158 event pairs, 9389 based on Foata normal form. 1265/44790 useless extension candidates. Maximal degree in co-relation 110650. Up to 15792 conditions per place. [2024-11-28 04:31:06,677 INFO L140 encePairwiseOnDemand]: 89/107 looper letters, 177 selfloop transitions, 47 changer transitions 0/263 dead transitions. [2024-11-28 04:31:06,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 263 transitions, 1293 flow [2024-11-28 04:31:06,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 04:31:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-28 04:31:06,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1340 transitions. [2024-11-28 04:31:06,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.463828314295604 [2024-11-28 04:31:06,685 INFO L175 Difference]: Start difference. First operand has 129 places, 135 transitions, 495 flow. Second operand 27 states and 1340 transitions. [2024-11-28 04:31:06,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 263 transitions, 1293 flow [2024-11-28 04:31:06,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 263 transitions, 1293 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:31:06,829 INFO L231 Difference]: Finished difference. Result has 157 places, 137 transitions, 611 flow [2024-11-28 04:31:06,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=611, PETRI_PLACES=157, PETRI_TRANSITIONS=137} [2024-11-28 04:31:06,830 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 57 predicate places. [2024-11-28 04:31:06,832 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 137 transitions, 611 flow [2024-11-28 04:31:06,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 44.07142857142857) internal successors, (1851), 42 states have internal predecessors, (1851), 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) [2024-11-28 04:31:06,834 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:31:06,834 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:06,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:31:07,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:07,034 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-28 04:31:07,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:07,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2093454285, now seen corresponding path program 1 times [2024-11-28 04:31:07,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:31:07,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252264989] [2024-11-28 04:31:07,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:07,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:31:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 04:31:09,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:31:09,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252264989] [2024-11-28 04:31:09,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252264989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:31:09,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202601093] [2024-11-28 04:31:09,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:09,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:09,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:09,120 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:09,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:31:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:09,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 04:31:09,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:09,409 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 15 treesize of output 1 [2024-11-28 04:31:09,536 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 04:31:09,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2024-11-28 04:31:09,678 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 04:31:09,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2024-11-28 04:31:09,828 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 04:31:09,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2024-11-28 04:31:09,980 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 04:31:09,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2024-11-28 04:31:10,161 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 15 treesize of output 7 [2024-11-28 04:31:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 04:31:10,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:31:11,579 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 [2024-11-28 04:31:11,585 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 44 treesize of output 42 [2024-11-28 04:31:11,625 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-28 04:31:11,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202601093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:31:11,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:31:11,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 9] total 34 [2024-11-28 04:31:11,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243199944] [2024-11-28 04:31:11,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:31:11,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 04:31:11,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:31:11,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 04:31:11,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:31:16,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:31:16,882 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 107 [2024-11-28 04:31:16,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 137 transitions, 611 flow. Second operand has 35 states, 35 states have (on average 51.57142857142857) internal successors, (1805), 35 states have internal predecessors, (1805), 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) [2024-11-28 04:31:16,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:31:16,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 107 [2024-11-28 04:31:16,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:31:26,181 INFO L124 PetriNetUnfolderBase]: 33044/64331 cut-off events. [2024-11-28 04:31:26,181 INFO L125 PetriNetUnfolderBase]: For 60920/62650 co-relation queries the response was YES. [2024-11-28 04:31:26,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146319 conditions, 64331 events. 33044/64331 cut-off events. For 60920/62650 co-relation queries the response was YES. Maximal size of possible extension queue 2067. Compared 670696 event pairs, 8016 based on Foata normal form. 1362/58404 useless extension candidates. Maximal degree in co-relation 146130. Up to 14668 conditions per place. [2024-11-28 04:31:26,618 INFO L140 encePairwiseOnDemand]: 89/107 looper letters, 182 selfloop transitions, 47 changer transitions 0/280 dead transitions. [2024-11-28 04:31:26,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 280 transitions, 1742 flow [2024-11-28 04:31:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:31:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 04:31:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1030 transitions. [2024-11-28 04:31:26,622 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5662451896646509 [2024-11-28 04:31:26,622 INFO L175 Difference]: Start difference. First operand has 157 places, 137 transitions, 611 flow. Second operand 17 states and 1030 transitions. [2024-11-28 04:31:26,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 280 transitions, 1742 flow [2024-11-28 04:31:27,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 280 transitions, 1612 flow, removed 1 selfloop flow, removed 24 redundant places. [2024-11-28 04:31:27,298 INFO L231 Difference]: Finished difference. Result has 152 places, 145 transitions, 681 flow [2024-11-28 04:31:27,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=681, PETRI_PLACES=152, PETRI_TRANSITIONS=145} [2024-11-28 04:31:27,299 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 52 predicate places. [2024-11-28 04:31:27,299 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 145 transitions, 681 flow [2024-11-28 04:31:27,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 51.57142857142857) internal successors, (1805), 35 states have internal predecessors, (1805), 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) [2024-11-28 04:31:27,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:31:27,300 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:27,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:31:27,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:31:27,502 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-28 04:31:27,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1518641050, now seen corresponding path program 1 times [2024-11-28 04:31:27,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:31:27,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035156914] [2024-11-28 04:31:27,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:27,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:31:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 9 proven. 52 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 04:31:29,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:31:29,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035156914] [2024-11-28 04:31:29,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035156914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:31:29,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833839177] [2024-11-28 04:31:29,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:29,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:29,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:29,879 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:29,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a118fbae-55d5-40c7-85a4-827331a5b82a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:31:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:30,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 04:31:30,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:30,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 04:31:30,172 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 15 treesize of output 1 [2024-11-28 04:31:30,338 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 04:31:30,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-28 04:31:30,509 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 04:31:30,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-28 04:31:30,721 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 04:31:30,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-28 04:31:30,864 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 04:31:30,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-28 04:31:30,935 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 04:31:30,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-28 04:31:30,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:31:31,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:31:31,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:31:31,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:31:31,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:31:31,281 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:31:31,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-28 04:31:31,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:31:31,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:31:31,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:31:31,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:31:31,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 04:31:31,586 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 17 treesize of output 9 [2024-11-28 04:31:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 04:31:31,711 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:32:52,497 INFO L349 Elim1Store]: treesize reduction 139, result has 26.1 percent of original size [2024-11-28 04:32:52,497 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 64 [2024-11-28 04:32:52,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:32:52,523 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 73 treesize of output 69 [2024-11-28 04:32:52,535 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 56 treesize of output 52 [2024-11-28 04:32:52,547 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 26 treesize of output 24 [2024-11-28 04:32:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 10 proven. 46 refuted. 4 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 04:32:52,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833839177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:32:52,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:32:52,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 16] total 48 [2024-11-28 04:32:52,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74228771] [2024-11-28 04:32:52,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:32:52,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-28 04:32:52,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:32:52,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-28 04:32:52,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=2141, Unknown=27, NotChecked=0, Total=2450 [2024-11-28 04:32:56,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:33:01,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:33:05,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:33:09,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:33:10,329 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2024-11-28 04:33:10,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 145 transitions, 681 flow. Second operand has 50 states, 50 states have (on average 42.12) internal successors, (2106), 50 states have internal predecessors, (2106), 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) [2024-11-28 04:33:10,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:33:10,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2024-11-28 04:33:10,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand