./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i --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_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/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_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/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_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/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 c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:03:53,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:03:53,417 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 03:03:53,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:03:53,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:03:53,452 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:03:53,453 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:03:53,453 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:03:53,454 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:03:53,454 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:03:53,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:03:53,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:03:53,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:03:53,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:03:53,455 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:03:53,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:03:53,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:03:53,456 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:03:53,456 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:03:53,456 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:03:53,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:03:53,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:03:53,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:03:53,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:03:53,457 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 03:03:53,457 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:03:53,457 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:03:53,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:03:53,458 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:03:53,458 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:03:53,458 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:03:53,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:03:53,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:03:53,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:03:53,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:03:53,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:03:53,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:03:53,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:03:53,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:03:53,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:03:53,460 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:03:53,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:03:53,460 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:03:53,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:03:53,461 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:03:53,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:03:53,461 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:03:53,461 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:03:53,461 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:03:53,461 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:03:53,462 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_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/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 -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2024-11-28 03:03:53,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:03:53,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:03:53,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:03:53,847 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:03:53,847 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:03:53,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2024-11-28 03:03:57,362 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/data/d1e4bd808/476588d9e4194845a7230a755a9fff0d/FLAG5c09248b4 [2024-11-28 03:03:57,723 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:03:57,724 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2024-11-28 03:03:57,744 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/data/d1e4bd808/476588d9e4194845a7230a755a9fff0d/FLAG5c09248b4 [2024-11-28 03:03:57,932 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/data/d1e4bd808/476588d9e4194845a7230a755a9fff0d [2024-11-28 03:03:57,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:03:57,938 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:03:57,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:03:57,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:03:57,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:03:57,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:57" (1/1) ... [2024-11-28 03:03:57,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fef4a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:57, skipping insertion in model container [2024-11-28 03:03:57,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:57" (1/1) ... [2024-11-28 03:03:57,995 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:03:58,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:03:58,580 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:03:58,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:03:58,747 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:03:58,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58 WrapperNode [2024-11-28 03:03:58,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:03:58,751 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:03:58,751 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:03:58,751 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:03:58,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58" (1/1) ... [2024-11-28 03:03:58,788 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58" (1/1) ... [2024-11-28 03:03:58,824 INFO L138 Inliner]: procedures = 265, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2024-11-28 03:03:58,825 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:03:58,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:03:58,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:03:58,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:03:58,836 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58" (1/1) ... [2024-11-28 03:03:58,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58" (1/1) ... [2024-11-28 03:03:58,844 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58" (1/1) ... [2024-11-28 03:03:58,861 INFO L175 MemorySlicer]: Split 64 memory accesses to 1 slices as follows [64]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 2 writes are split as follows [2]. [2024-11-28 03:03:58,861 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58" (1/1) ... [2024-11-28 03:03:58,861 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58" (1/1) ... [2024-11-28 03:03:58,871 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58" (1/1) ... [2024-11-28 03:03:58,872 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58" (1/1) ... [2024-11-28 03:03:58,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58" (1/1) ... [2024-11-28 03:03:58,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58" (1/1) ... [2024-11-28 03:03:58,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58" (1/1) ... [2024-11-28 03:03:58,881 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:03:58,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:03:58,883 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:03:58,883 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:03:58,884 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58" (1/1) ... [2024-11-28 03:03:58,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:03:58,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:58,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:03:58,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:03:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 03:03:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:03:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:03:58,969 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 03:03:58,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:03:58,969 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 03:03:58,969 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 03:03:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:03:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:03:58,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:03:58,974 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 03:03:59,188 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:03:59,191 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:03:59,656 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:03:59,657 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:04:00,297 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:04:00,298 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 03:04:00,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:00 BoogieIcfgContainer [2024-11-28 03:04:00,298 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:04:00,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:04:00,303 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:04:00,313 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:04:00,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:03:57" (1/3) ... [2024-11-28 03:04:00,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f69e847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:04:00, skipping insertion in model container [2024-11-28 03:04:00,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:58" (2/3) ... [2024-11-28 03:04:00,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f69e847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:04:00, skipping insertion in model container [2024-11-28 03:04:00,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:00" (3/3) ... [2024-11-28 03:04:00,321 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2024-11-28 03:04:00,339 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:04:00,346 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_07-tricky_address2.i that has 2 procedures, 27 locations, 1 initial locations, 1 loop locations, and 6 error locations. [2024-11-28 03:04:00,347 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:04:00,407 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:04:00,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 58 flow [2024-11-28 03:04:00,506 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-11-28 03:04:00,509 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:04:00,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 26 events. 1/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2024-11-28 03:04:00,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 58 flow [2024-11-28 03:04:00,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 55 flow [2024-11-28 03:04:00,525 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:04:00,547 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;@47cacec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:04:00,547 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-28 03:04:00,555 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:04:00,555 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 03:04:00,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:04:00,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:00,556 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:04:00,557 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:04:00,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:00,565 INFO L85 PathProgramCache]: Analyzing trace with hash 343165, now seen corresponding path program 1 times [2024-11-28 03:04:00,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:00,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700305273] [2024-11-28 03:04:00,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:00,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:01,052 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 03:04:01,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:01,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700305273] [2024-11-28 03:04:01,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700305273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:01,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:04:01,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:04:01,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546758489] [2024-11-28 03:04:01,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:01,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:04:01,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:01,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:04:01,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:04:01,129 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 03:04:01,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 03:04:01,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:04:01,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 03:04:01,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:04:01,318 INFO L124 PetriNetUnfolderBase]: 37/119 cut-off events. [2024-11-28 03:04:01,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:04:01,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 119 events. 37/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 399 event pairs, 36 based on Foata normal form. 1/109 useless extension candidates. Maximal degree in co-relation 192. Up to 92 conditions per place. [2024-11-28 03:04:01,322 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 18 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-11-28 03:04:01,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 101 flow [2024-11-28 03:04:01,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:04:01,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:04:01,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-11-28 03:04:01,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-28 03:04:01,344 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 55 flow. Second operand 4 states and 56 transitions. [2024-11-28 03:04:01,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 101 flow [2024-11-28 03:04:01,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:04:01,357 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 78 flow [2024-11-28 03:04:01,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-11-28 03:04:01,365 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-11-28 03:04:01,366 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 78 flow [2024-11-28 03:04:01,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 03:04:01,366 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:01,366 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 03:04:01,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:04:01,367 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:04:01,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:01,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1633631322, now seen corresponding path program 1 times [2024-11-28 03:04:01,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:01,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601978416] [2024-11-28 03:04:01,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:01,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:01,716 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 03:04:01,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:01,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601978416] [2024-11-28 03:04:01,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601978416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:01,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088139433] [2024-11-28 03:04:01,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:01,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:01,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:01,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:01,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:04:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:01,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:04:01,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:01,960 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 03:04:01,961 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:04:01,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088139433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:01,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:04:01,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 03:04:01,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685829148] [2024-11-28 03:04:01,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:01,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:04:01,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:01,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:04:01,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:01,988 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 03:04:01,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 03:04:01,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:04:01,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 03:04:01,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:04:02,198 INFO L124 PetriNetUnfolderBase]: 37/118 cut-off events. [2024-11-28 03:04:02,198 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:04:02,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 118 events. 37/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 395 event pairs, 36 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 209. Up to 87 conditions per place. [2024-11-28 03:04:02,202 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 14 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2024-11-28 03:04:02,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 114 flow [2024-11-28 03:04:02,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:04:02,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:04:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-11-28 03:04:02,205 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-11-28 03:04:02,205 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 78 flow. Second operand 6 states and 69 transitions. [2024-11-28 03:04:02,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 114 flow [2024-11-28 03:04:02,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:04:02,207 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 84 flow [2024-11-28 03:04:02,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-11-28 03:04:02,209 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-11-28 03:04:02,209 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 84 flow [2024-11-28 03:04:02,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 03:04:02,210 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:02,210 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 03:04:02,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:04:02,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:02,417 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:04:02,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:02,418 INFO L85 PathProgramCache]: Analyzing trace with hash -897036230, now seen corresponding path program 1 times [2024-11-28 03:04:02,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:02,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662328284] [2024-11-28 03:04:02,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:02,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:02,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:04:02,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:02,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662328284] [2024-11-28 03:04:02,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662328284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:02,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:04:02,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:04:02,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211258824] [2024-11-28 03:04:02,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:02,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:04:02,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:02,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:04:02,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:04:02,578 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 03:04:02,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 03:04:02,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:04:02,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 03:04:02,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:04:02,707 INFO L124 PetriNetUnfolderBase]: 37/117 cut-off events. [2024-11-28 03:04:02,707 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 03:04:02,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 117 events. 37/117 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 391 event pairs, 36 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 205. Up to 90 conditions per place. [2024-11-28 03:04:02,712 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 15 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2024-11-28 03:04:02,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 118 flow [2024-11-28 03:04:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:04:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:04:02,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-11-28 03:04:02,715 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-28 03:04:02,715 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 84 flow. Second operand 3 states and 42 transitions. [2024-11-28 03:04:02,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 118 flow [2024-11-28 03:04:02,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 96 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-28 03:04:02,717 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 66 flow [2024-11-28 03:04:02,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-28 03:04:02,722 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2024-11-28 03:04:02,722 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 66 flow [2024-11-28 03:04:02,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 03:04:02,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:02,722 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:02,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:04:02,723 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:04:02,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:02,723 INFO L85 PathProgramCache]: Analyzing trace with hash -266280113, now seen corresponding path program 1 times [2024-11-28 03:04:02,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:02,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471269293] [2024-11-28 03:04:02,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:02,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:02,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:02,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471269293] [2024-11-28 03:04:02,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471269293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:02,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781615578] [2024-11-28 03:04:02,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:02,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:02,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:02,983 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:02,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:04:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:03,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:04:03,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:03,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:04:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:03,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781615578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:04:03,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:04:03,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-28 03:04:03,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861856490] [2024-11-28 03:04:03,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:04:03,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:04:03,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:03,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:04:03,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:04:03,228 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 03:04:03,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 66 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 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 03:04:03,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:04:03,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 03:04:03,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:04:03,431 INFO L124 PetriNetUnfolderBase]: 37/121 cut-off events. [2024-11-28 03:04:03,431 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-28 03:04:03,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 121 events. 37/121 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 388 event pairs, 36 based on Foata normal form. 2/114 useless extension candidates. Maximal degree in co-relation 198. Up to 88 conditions per place. [2024-11-28 03:04:03,433 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 15 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2024-11-28 03:04:03,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 125 flow [2024-11-28 03:04:03,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:04:03,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:04:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-11-28 03:04:03,438 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-11-28 03:04:03,438 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 66 flow. Second operand 7 states and 80 transitions. [2024-11-28 03:04:03,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 125 flow [2024-11-28 03:04:03,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 111 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:04:03,442 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 92 flow [2024-11-28 03:04:03,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-11-28 03:04:03,443 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2024-11-28 03:04:03,444 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 92 flow [2024-11-28 03:04:03,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 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 03:04:03,444 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:03,444 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:03,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:04:03,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:03,645 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:04:03,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:03,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1621929873, now seen corresponding path program 2 times [2024-11-28 03:04:03,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:03,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088212459] [2024-11-28 03:04:03,646 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:04:03,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:03,720 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:04:03,722 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:04:05,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:04:05,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:05,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088212459] [2024-11-28 03:04:05,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088212459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:05,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:04:05,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:04:05,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852986223] [2024-11-28 03:04:05,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:05,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:04:05,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:05,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:04:05,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:04:05,404 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 03:04:05,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:04:05,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:04:05,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 03:04:05,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:04:05,812 INFO L124 PetriNetUnfolderBase]: 43/128 cut-off events. [2024-11-28 03:04:05,813 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-28 03:04:05,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 128 events. 43/128 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 383 event pairs, 18 based on Foata normal form. 7/129 useless extension candidates. Maximal degree in co-relation 222. Up to 73 conditions per place. [2024-11-28 03:04:05,814 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 28 selfloop transitions, 5 changer transitions 6/44 dead transitions. [2024-11-28 03:04:05,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 200 flow [2024-11-28 03:04:05,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:04:05,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:04:05,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-11-28 03:04:05,817 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2024-11-28 03:04:05,817 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 92 flow. Second operand 6 states and 86 transitions. [2024-11-28 03:04:05,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 200 flow [2024-11-28 03:04:05,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:04:05,820 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 115 flow [2024-11-28 03:04:05,820 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2024-11-28 03:04:05,821 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-11-28 03:04:05,821 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 115 flow [2024-11-28 03:04:05,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:04:05,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:05,822 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:05,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:04:05,822 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:04:05,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:05,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1621158921, now seen corresponding path program 1 times [2024-11-28 03:04:05,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:05,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419008988] [2024-11-28 03:04:05,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:05,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:06,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:06,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419008988] [2024-11-28 03:04:06,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419008988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:06,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463058013] [2024-11-28 03:04:06,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:06,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:06,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:06,085 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:06,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:04:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:06,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:04:06,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:06,278 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:04:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:06,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463058013] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:04:06,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:04:06,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-28 03:04:06,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818715159] [2024-11-28 03:04:06,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:04:06,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:04:06,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:06,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:04:06,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:04:06,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 03:04:06,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 115 flow. Second operand has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 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 03:04:06,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:04:06,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 03:04:06,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:04:06,779 INFO L124 PetriNetUnfolderBase]: 27/117 cut-off events. [2024-11-28 03:04:06,779 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-11-28 03:04:06,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 117 events. 27/117 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 326 event pairs, 26 based on Foata normal form. 4/115 useless extension candidates. Maximal degree in co-relation 253. Up to 69 conditions per place. [2024-11-28 03:04:06,781 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 16 selfloop transitions, 15 changer transitions 0/38 dead transitions. [2024-11-28 03:04:06,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 38 transitions, 225 flow [2024-11-28 03:04:06,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:04:06,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 03:04:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 154 transitions. [2024-11-28 03:04:06,783 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3802469135802469 [2024-11-28 03:04:06,784 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 115 flow. Second operand 15 states and 154 transitions. [2024-11-28 03:04:06,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 38 transitions, 225 flow [2024-11-28 03:04:06,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 38 transitions, 216 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-28 03:04:06,787 INFO L231 Difference]: Finished difference. Result has 57 places, 38 transitions, 203 flow [2024-11-28 03:04:06,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=203, PETRI_PLACES=57, PETRI_TRANSITIONS=38} [2024-11-28 03:04:06,788 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-11-28 03:04:06,789 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 38 transitions, 203 flow [2024-11-28 03:04:06,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 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 03:04:06,789 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:06,789 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:06,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:04:06,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:06,991 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:04:06,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:06,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1399514679, now seen corresponding path program 2 times [2024-11-28 03:04:06,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:06,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962259866] [2024-11-28 03:04:06,992 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:04:06,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:07,055 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:04:07,056 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:04:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 03:04:08,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:08,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962259866] [2024-11-28 03:04:08,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962259866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:08,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:04:08,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:04:08,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756937240] [2024-11-28 03:04:08,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:08,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:04:08,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:08,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:04:08,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:04:08,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 03:04:08,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 38 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:04:08,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:04:08,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 03:04:08,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:04:08,593 INFO L124 PetriNetUnfolderBase]: 30/119 cut-off events. [2024-11-28 03:04:08,593 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-11-28 03:04:08,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 119 events. 30/119 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 319 event pairs, 8 based on Foata normal form. 14/133 useless extension candidates. Maximal degree in co-relation 208. Up to 51 conditions per place. [2024-11-28 03:04:08,595 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 38 selfloop transitions, 6 changer transitions 4/53 dead transitions. [2024-11-28 03:04:08,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 341 flow [2024-11-28 03:04:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:04:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:04:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-11-28 03:04:08,597 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-28 03:04:08,597 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 203 flow. Second operand 6 states and 87 transitions. [2024-11-28 03:04:08,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 341 flow [2024-11-28 03:04:08,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 331 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 03:04:08,608 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 233 flow [2024-11-28 03:04:08,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2024-11-28 03:04:08,610 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-11-28 03:04:08,612 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 233 flow [2024-11-28 03:04:08,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:04:08,613 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:08,613 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:08,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:04:08,614 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:04:08,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:08,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1121964422, now seen corresponding path program 1 times [2024-11-28 03:04:08,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:08,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041999795] [2024-11-28 03:04:08,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:08,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:09,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:09,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041999795] [2024-11-28 03:04:09,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041999795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:09,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850219516] [2024-11-28 03:04:09,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:09,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:09,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:09,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:09,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:04:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:09,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:04:09,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:09,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:04:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:04:09,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850219516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:04:09,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:04:09,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-28 03:04:09,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079472731] [2024-11-28 03:04:09,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:04:09,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:04:09,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:09,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:04:09,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:04:09,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 03:04:09,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 233 flow. Second operand has 23 states, 23 states have (on average 9.434782608695652) internal successors, (217), 23 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:04:09,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:04:09,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 03:04:09,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:04:10,103 INFO L124 PetriNetUnfolderBase]: 26/123 cut-off events. [2024-11-28 03:04:10,103 INFO L125 PetriNetUnfolderBase]: For 168/169 co-relation queries the response was YES. [2024-11-28 03:04:10,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 123 events. 26/123 cut-off events. For 168/169 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 296 event pairs, 22 based on Foata normal form. 3/126 useless extension candidates. Maximal degree in co-relation 336. Up to 68 conditions per place. [2024-11-28 03:04:10,107 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 19 selfloop transitions, 21 changer transitions 0/47 dead transitions. [2024-11-28 03:04:10,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 47 transitions, 367 flow [2024-11-28 03:04:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:04:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 03:04:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 207 transitions. [2024-11-28 03:04:10,110 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-11-28 03:04:10,110 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 233 flow. Second operand 21 states and 207 transitions. [2024-11-28 03:04:10,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 47 transitions, 367 flow [2024-11-28 03:04:10,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 47 transitions, 359 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 03:04:10,117 INFO L231 Difference]: Finished difference. Result has 82 places, 47 transitions, 336 flow [2024-11-28 03:04:10,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=336, PETRI_PLACES=82, PETRI_TRANSITIONS=47} [2024-11-28 03:04:10,119 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-11-28 03:04:10,121 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 47 transitions, 336 flow [2024-11-28 03:04:10,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.434782608695652) internal successors, (217), 23 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:04:10,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:10,122 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:10,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:04:10,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:10,327 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:04:10,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:10,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1992772691, now seen corresponding path program 2 times [2024-11-28 03:04:10,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:10,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414681935] [2024-11-28 03:04:10,328 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:04:10,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:10,431 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:04:10,431 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:04:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:04:15,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:15,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414681935] [2024-11-28 03:04:15,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414681935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:15,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:04:15,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:04:15,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674249661] [2024-11-28 03:04:15,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:15,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:04:15,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:15,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:04:15,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:04:15,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-28 03:04:15,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 47 transitions, 336 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 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 03:04:15,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:04:15,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-28 03:04:15,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:04:17,433 INFO L124 PetriNetUnfolderBase]: 58/184 cut-off events. [2024-11-28 03:04:17,433 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-11-28 03:04:17,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 184 events. 58/184 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 577 event pairs, 12 based on Foata normal form. 3/187 useless extension candidates. Maximal degree in co-relation 409. Up to 64 conditions per place. [2024-11-28 03:04:17,435 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 60 selfloop transitions, 19 changer transitions 6/86 dead transitions. [2024-11-28 03:04:17,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 86 transitions, 632 flow [2024-11-28 03:04:17,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:04:17,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 03:04:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 119 transitions. [2024-11-28 03:04:17,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33903133903133903 [2024-11-28 03:04:17,439 INFO L175 Difference]: Start difference. First operand has 82 places, 47 transitions, 336 flow. Second operand 13 states and 119 transitions. [2024-11-28 03:04:17,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 86 transitions, 632 flow [2024-11-28 03:04:17,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 589 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-28 03:04:17,445 INFO L231 Difference]: Finished difference. Result has 86 places, 61 transitions, 416 flow [2024-11-28 03:04:17,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=416, PETRI_PLACES=86, PETRI_TRANSITIONS=61} [2024-11-28 03:04:17,447 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-11-28 03:04:17,447 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 61 transitions, 416 flow [2024-11-28 03:04:17,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 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 03:04:17,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:17,447 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:17,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:04:17,448 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:04:17,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:17,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1115130977, now seen corresponding path program 3 times [2024-11-28 03:04:17,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:17,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832687711] [2024-11-28 03:04:17,449 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:04:17,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:17,502 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 03:04:17,503 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:04:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:04:20,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:20,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832687711] [2024-11-28 03:04:20,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832687711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:20,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:04:20,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:04:20,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775200732] [2024-11-28 03:04:20,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:20,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:04:20,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:20,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:04:20,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:04:20,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-28 03:04:20,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 61 transitions, 416 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 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 03:04:20,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:04:20,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-28 03:04:20,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:04:22,487 INFO L124 PetriNetUnfolderBase]: 62/202 cut-off events. [2024-11-28 03:04:22,487 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-11-28 03:04:22,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 202 events. 62/202 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 690 event pairs, 16 based on Foata normal form. 3/205 useless extension candidates. Maximal degree in co-relation 629. Up to 73 conditions per place. [2024-11-28 03:04:22,489 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 59 selfloop transitions, 28 changer transitions 7/95 dead transitions. [2024-11-28 03:04:22,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 777 flow [2024-11-28 03:04:22,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:04:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:04:22,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 132 transitions. [2024-11-28 03:04:22,495 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2875816993464052 [2024-11-28 03:04:22,495 INFO L175 Difference]: Start difference. First operand has 86 places, 61 transitions, 416 flow. Second operand 17 states and 132 transitions. [2024-11-28 03:04:22,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 777 flow [2024-11-28 03:04:22,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 746 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-28 03:04:22,507 INFO L231 Difference]: Finished difference. Result has 102 places, 73 transitions, 559 flow [2024-11-28 03:04:22,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=559, PETRI_PLACES=102, PETRI_TRANSITIONS=73} [2024-11-28 03:04:22,510 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-11-28 03:04:22,511 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 73 transitions, 559 flow [2024-11-28 03:04:22,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 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 03:04:22,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:22,512 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:22,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:04:22,512 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:04:22,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:22,513 INFO L85 PathProgramCache]: Analyzing trace with hash 531444560, now seen corresponding path program 1 times [2024-11-28 03:04:22,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:22,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303538232] [2024-11-28 03:04:22,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:22,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:25,122 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:04:25,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:25,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303538232] [2024-11-28 03:04:25,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303538232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:25,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:04:25,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:04:25,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691317197] [2024-11-28 03:04:25,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:25,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:04:25,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:25,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:04:25,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:04:25,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-28 03:04:25,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 73 transitions, 559 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 03:04:25,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:04:25,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-28 03:04:25,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:04:25,658 INFO L124 PetriNetUnfolderBase]: 58/189 cut-off events. [2024-11-28 03:04:25,658 INFO L125 PetriNetUnfolderBase]: For 388/388 co-relation queries the response was YES. [2024-11-28 03:04:25,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 189 events. 58/189 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 13 based on Foata normal form. 3/192 useless extension candidates. Maximal degree in co-relation 641. Up to 63 conditions per place. [2024-11-28 03:04:25,660 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 73 selfloop transitions, 16 changer transitions 4/94 dead transitions. [2024-11-28 03:04:25,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 94 transitions, 871 flow [2024-11-28 03:04:25,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:04:25,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 03:04:25,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-11-28 03:04:25,664 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3374485596707819 [2024-11-28 03:04:25,664 INFO L175 Difference]: Start difference. First operand has 102 places, 73 transitions, 559 flow. Second operand 9 states and 82 transitions. [2024-11-28 03:04:25,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 94 transitions, 871 flow [2024-11-28 03:04:25,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 94 transitions, 831 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-28 03:04:25,677 INFO L231 Difference]: Finished difference. Result has 104 places, 72 transitions, 555 flow [2024-11-28 03:04:25,677 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=555, PETRI_PLACES=104, PETRI_TRANSITIONS=72} [2024-11-28 03:04:25,678 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2024-11-28 03:04:25,678 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 72 transitions, 555 flow [2024-11-28 03:04:25,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 03:04:25,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:04:25,678 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:25,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:04:25,681 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:04:25,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:25,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2127023525, now seen corresponding path program 4 times [2024-11-28 03:04:25,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:25,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717432000] [2024-11-28 03:04:25,682 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:04:25,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:25,803 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:04:25,803 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:04:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:04:50,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:50,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717432000] [2024-11-28 03:04:50,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717432000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:50,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:04:50,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:04:50,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899706229] [2024-11-28 03:04:50,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:50,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:04:50,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:50,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:04:50,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:04:50,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 03:04:50,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 72 transitions, 555 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 03:04:50,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:04:50,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 03:04:50,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:05:11,571 INFO L124 PetriNetUnfolderBase]: 46/179 cut-off events. [2024-11-28 03:05:11,572 INFO L125 PetriNetUnfolderBase]: For 421/427 co-relation queries the response was YES. [2024-11-28 03:05:11,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 179 events. 46/179 cut-off events. For 421/427 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 637 event pairs, 2 based on Foata normal form. 13/192 useless extension candidates. Maximal degree in co-relation 630. Up to 42 conditions per place. [2024-11-28 03:05:11,574 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 51 selfloop transitions, 28 changer transitions 18/105 dead transitions. [2024-11-28 03:05:11,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 105 transitions, 912 flow [2024-11-28 03:05:11,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:05:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 03:05:11,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 212 transitions. [2024-11-28 03:05:11,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43621399176954734 [2024-11-28 03:05:11,576 INFO L175 Difference]: Start difference. First operand has 104 places, 72 transitions, 555 flow. Second operand 18 states and 212 transitions. [2024-11-28 03:05:11,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 105 transitions, 912 flow [2024-11-28 03:05:11,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 105 transitions, 865 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-28 03:05:11,584 INFO L231 Difference]: Finished difference. Result has 124 places, 72 transitions, 600 flow [2024-11-28 03:05:11,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=600, PETRI_PLACES=124, PETRI_TRANSITIONS=72} [2024-11-28 03:05:11,585 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2024-11-28 03:05:11,585 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 72 transitions, 600 flow [2024-11-28 03:05:11,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 03:05:11,585 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:05:11,586 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:11,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:05:11,586 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:05:11,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1373418947, now seen corresponding path program 5 times [2024-11-28 03:05:11,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:11,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525730656] [2024-11-28 03:05:11,587 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:05:11,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:11,658 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 03:05:11,658 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:05:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:05:16,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:16,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525730656] [2024-11-28 03:05:16,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525730656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:16,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174121419] [2024-11-28 03:05:16,590 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:05:16,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:16,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:16,595 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:16,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:05:16,840 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 03:05:16,840 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:05:16,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 03:05:16,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:20,016 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 11 [2024-11-28 03:05:20,495 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:05:20,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:05:20,918 INFO L349 Elim1Store]: treesize reduction 180, result has 38.1 percent of original size [2024-11-28 03:05:20,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 90 treesize of output 141 [2024-11-28 03:05:21,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:05:21,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 455 treesize of output 313 [2024-11-28 03:05:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:05:24,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:05:25,094 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 03:05:25,104 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 15 treesize of output 8 [2024-11-28 03:05:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:05:27,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174121419] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:27,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:05:27,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [26, 24] total 55 [2024-11-28 03:05:27,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168860288] [2024-11-28 03:05:27,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:27,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:05:27,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:27,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:05:27,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=426, Invalid=2766, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 03:05:27,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-28 03:05:27,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 72 transitions, 600 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 03:05:27,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:05:27,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-28 03:05:27,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:05:29,326 INFO L124 PetriNetUnfolderBase]: 45/185 cut-off events. [2024-11-28 03:05:29,326 INFO L125 PetriNetUnfolderBase]: For 664/668 co-relation queries the response was YES. [2024-11-28 03:05:29,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 185 events. 45/185 cut-off events. For 664/668 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 664 event pairs, 0 based on Foata normal form. 7/192 useless extension candidates. Maximal degree in co-relation 772. Up to 25 conditions per place. [2024-11-28 03:05:29,329 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 61 selfloop transitions, 50 changer transitions 2/118 dead transitions. [2024-11-28 03:05:29,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 118 transitions, 1132 flow [2024-11-28 03:05:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:05:29,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 03:05:29,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 246 transitions. [2024-11-28 03:05:29,331 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37962962962962965 [2024-11-28 03:05:29,331 INFO L175 Difference]: Start difference. First operand has 124 places, 72 transitions, 600 flow. Second operand 24 states and 246 transitions. [2024-11-28 03:05:29,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 118 transitions, 1132 flow [2024-11-28 03:05:29,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 118 transitions, 981 flow, removed 45 selfloop flow, removed 14 redundant places. [2024-11-28 03:05:29,344 INFO L231 Difference]: Finished difference. Result has 130 places, 93 transitions, 798 flow [2024-11-28 03:05:29,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=798, PETRI_PLACES=130, PETRI_TRANSITIONS=93} [2024-11-28 03:05:29,345 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-11-28 03:05:29,345 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 93 transitions, 798 flow [2024-11-28 03:05:29,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 03:05:29,346 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:05:29,346 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:29,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:05:29,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 03:05:29,547 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:05:29,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:29,548 INFO L85 PathProgramCache]: Analyzing trace with hash -705087486, now seen corresponding path program 1 times [2024-11-28 03:05:29,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:29,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907142667] [2024-11-28 03:05:29,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:29,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:05:34,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:34,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907142667] [2024-11-28 03:05:34,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907142667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:34,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:34,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:05:34,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883511328] [2024-11-28 03:05:34,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:34,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:05:34,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:34,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:05:34,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:05:34,268 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-28 03:05:34,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 93 transitions, 798 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:05:34,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:05:34,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-28 03:05:34,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:05:36,256 INFO L124 PetriNetUnfolderBase]: 45/199 cut-off events. [2024-11-28 03:05:36,256 INFO L125 PetriNetUnfolderBase]: For 559/559 co-relation queries the response was YES. [2024-11-28 03:05:36,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 199 events. 45/199 cut-off events. For 559/559 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 830 event pairs, 13 based on Foata normal form. 3/200 useless extension candidates. Maximal degree in co-relation 796. Up to 101 conditions per place. [2024-11-28 03:05:36,258 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 64 selfloop transitions, 27 changer transitions 12/112 dead transitions. [2024-11-28 03:05:36,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 112 transitions, 1102 flow [2024-11-28 03:05:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:05:36,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 03:05:36,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 147 transitions. [2024-11-28 03:05:36,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-11-28 03:05:36,261 INFO L175 Difference]: Start difference. First operand has 130 places, 93 transitions, 798 flow. Second operand 16 states and 147 transitions. [2024-11-28 03:05:36,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 112 transitions, 1102 flow [2024-11-28 03:05:36,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 112 transitions, 1013 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-11-28 03:05:36,274 INFO L231 Difference]: Finished difference. Result has 137 places, 96 transitions, 797 flow [2024-11-28 03:05:36,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=797, PETRI_PLACES=137, PETRI_TRANSITIONS=96} [2024-11-28 03:05:36,275 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 108 predicate places. [2024-11-28 03:05:36,276 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 96 transitions, 797 flow [2024-11-28 03:05:36,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:05:36,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:05:36,276 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:36,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:05:36,277 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:05:36,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:36,278 INFO L85 PathProgramCache]: Analyzing trace with hash -676488126, now seen corresponding path program 2 times [2024-11-28 03:05:36,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:36,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621565173] [2024-11-28 03:05:36,278 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:05:36,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:36,315 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:05:36,316 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:05:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:05:39,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:39,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621565173] [2024-11-28 03:05:39,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621565173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:39,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:39,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:05:39,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458213402] [2024-11-28 03:05:39,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:39,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:05:39,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:39,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:05:39,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:05:39,883 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-28 03:05:39,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 96 transitions, 797 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:05:39,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:05:39,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-28 03:05:39,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:05:41,206 INFO L124 PetriNetUnfolderBase]: 42/192 cut-off events. [2024-11-28 03:05:41,206 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2024-11-28 03:05:41,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 192 events. 42/192 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 775 event pairs, 7 based on Foata normal form. 3/195 useless extension candidates. Maximal degree in co-relation 765. Up to 91 conditions per place. [2024-11-28 03:05:41,208 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 63 selfloop transitions, 30 changer transitions 7/109 dead transitions. [2024-11-28 03:05:41,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 109 transitions, 1044 flow [2024-11-28 03:05:41,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:05:41,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 03:05:41,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 134 transitions. [2024-11-28 03:05:41,210 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3544973544973545 [2024-11-28 03:05:41,210 INFO L175 Difference]: Start difference. First operand has 137 places, 96 transitions, 797 flow. Second operand 14 states and 134 transitions. [2024-11-28 03:05:41,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 109 transitions, 1044 flow [2024-11-28 03:05:41,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 109 transitions, 994 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-28 03:05:41,219 INFO L231 Difference]: Finished difference. Result has 139 places, 95 transitions, 811 flow [2024-11-28 03:05:41,219 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=811, PETRI_PLACES=139, PETRI_TRANSITIONS=95} [2024-11-28 03:05:41,220 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 110 predicate places. [2024-11-28 03:05:41,220 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 95 transitions, 811 flow [2024-11-28 03:05:41,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:05:41,220 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:05:41,220 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:41,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:05:41,221 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:05:41,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:41,222 INFO L85 PathProgramCache]: Analyzing trace with hash 185060550, now seen corresponding path program 3 times [2024-11-28 03:05:41,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:41,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075902902] [2024-11-28 03:05:41,222 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:05:41,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:41,254 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 03:05:41,255 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:05:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:05:44,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:44,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075902902] [2024-11-28 03:05:44,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075902902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:44,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:44,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:05:44,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634682575] [2024-11-28 03:05:44,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:44,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:05:44,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:44,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:05:44,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:05:44,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-28 03:05:44,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 95 transitions, 811 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:05:44,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:05:44,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-28 03:05:44,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:05:46,257 INFO L124 PetriNetUnfolderBase]: 38/180 cut-off events. [2024-11-28 03:05:46,257 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2024-11-28 03:05:46,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 180 events. 38/180 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 672 event pairs, 9 based on Foata normal form. 3/183 useless extension candidates. Maximal degree in co-relation 745. Up to 87 conditions per place. [2024-11-28 03:05:46,259 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 61 selfloop transitions, 23 changer transitions 11/104 dead transitions. [2024-11-28 03:05:46,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 104 transitions, 1038 flow [2024-11-28 03:05:46,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:05:46,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 03:05:46,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 138 transitions. [2024-11-28 03:05:46,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-11-28 03:05:46,262 INFO L175 Difference]: Start difference. First operand has 139 places, 95 transitions, 811 flow. Second operand 15 states and 138 transitions. [2024-11-28 03:05:46,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 104 transitions, 1038 flow [2024-11-28 03:05:46,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 104 transitions, 968 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-11-28 03:05:46,273 INFO L231 Difference]: Finished difference. Result has 140 places, 90 transitions, 758 flow [2024-11-28 03:05:46,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=758, PETRI_PLACES=140, PETRI_TRANSITIONS=90} [2024-11-28 03:05:46,274 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2024-11-28 03:05:46,274 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 90 transitions, 758 flow [2024-11-28 03:05:46,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:05:46,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:05:46,274 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:46,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:05:46,275 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:05:46,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:46,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1498174714, now seen corresponding path program 1 times [2024-11-28 03:05:46,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:46,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964590161] [2024-11-28 03:05:46,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:46,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:05:50,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:50,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964590161] [2024-11-28 03:05:50,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964590161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:50,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:50,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:05:50,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267164430] [2024-11-28 03:05:50,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:50,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:05:50,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:50,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:05:50,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:05:50,259 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 03:05:50,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 90 transitions, 758 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 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 03:05:50,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:05:50,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 03:05:50,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:05:51,450 INFO L124 PetriNetUnfolderBase]: 44/199 cut-off events. [2024-11-28 03:05:51,450 INFO L125 PetriNetUnfolderBase]: For 555/555 co-relation queries the response was YES. [2024-11-28 03:05:51,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 199 events. 44/199 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 813 event pairs, 11 based on Foata normal form. 3/202 useless extension candidates. Maximal degree in co-relation 839. Up to 43 conditions per place. [2024-11-28 03:05:51,452 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 82 selfloop transitions, 29 changer transitions 0/117 dead transitions. [2024-11-28 03:05:51,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 117 transitions, 1157 flow [2024-11-28 03:05:51,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:05:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:05:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-11-28 03:05:51,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-11-28 03:05:51,454 INFO L175 Difference]: Start difference. First operand has 140 places, 90 transitions, 758 flow. Second operand 11 states and 105 transitions. [2024-11-28 03:05:51,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 117 transitions, 1157 flow [2024-11-28 03:05:51,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 117 transitions, 1092 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-11-28 03:05:51,464 INFO L231 Difference]: Finished difference. Result has 135 places, 103 transitions, 899 flow [2024-11-28 03:05:51,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=899, PETRI_PLACES=135, PETRI_TRANSITIONS=103} [2024-11-28 03:05:51,465 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2024-11-28 03:05:51,465 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 103 transitions, 899 flow [2024-11-28 03:05:51,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 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 03:05:51,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:05:51,466 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:51,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:05:51,466 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:05:51,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash -373685244, now seen corresponding path program 1 times [2024-11-28 03:05:51,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:51,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629511273] [2024-11-28 03:05:51,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:51,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:05:59,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:59,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629511273] [2024-11-28 03:05:59,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629511273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:59,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:59,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:05:59,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255690729] [2024-11-28 03:05:59,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:59,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:05:59,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:59,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:05:59,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:05:59,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-28 03:05:59,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 103 transitions, 899 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:05:59,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:05:59,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-28 03:05:59,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:01,923 INFO L124 PetriNetUnfolderBase]: 40/201 cut-off events. [2024-11-28 03:06:01,923 INFO L125 PetriNetUnfolderBase]: For 795/795 co-relation queries the response was YES. [2024-11-28 03:06:01,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 201 events. 40/201 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 884 event pairs, 10 based on Foata normal form. 6/206 useless extension candidates. Maximal degree in co-relation 910. Up to 98 conditions per place. [2024-11-28 03:06:01,926 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 72 selfloop transitions, 22 changer transitions 17/119 dead transitions. [2024-11-28 03:06:01,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 119 transitions, 1267 flow [2024-11-28 03:06:01,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:06:01,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 03:06:01,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 143 transitions. [2024-11-28 03:06:01,928 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33101851851851855 [2024-11-28 03:06:01,928 INFO L175 Difference]: Start difference. First operand has 135 places, 103 transitions, 899 flow. Second operand 16 states and 143 transitions. [2024-11-28 03:06:01,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 119 transitions, 1267 flow [2024-11-28 03:06:01,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 119 transitions, 1230 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-28 03:06:01,938 INFO L231 Difference]: Finished difference. Result has 149 places, 98 transitions, 888 flow [2024-11-28 03:06:01,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=888, PETRI_PLACES=149, PETRI_TRANSITIONS=98} [2024-11-28 03:06:01,940 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places. [2024-11-28 03:06:01,940 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 98 transitions, 888 flow [2024-11-28 03:06:01,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:01,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:01,940 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:01,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:06:01,941 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:06:01,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:01,941 INFO L85 PathProgramCache]: Analyzing trace with hash 195022598, now seen corresponding path program 2 times [2024-11-28 03:06:01,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:01,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240454625] [2024-11-28 03:06:01,942 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:06:01,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:01,973 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:06:01,973 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:06:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:06:04,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:04,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240454625] [2024-11-28 03:06:04,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240454625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:04,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:04,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:06:04,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140340206] [2024-11-28 03:06:04,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:04,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:06:04,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:04,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:06:04,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:06:04,312 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-28 03:06:04,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 98 transitions, 888 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:04,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:04,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-28 03:06:04,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:05,898 INFO L124 PetriNetUnfolderBase]: 40/200 cut-off events. [2024-11-28 03:06:05,898 INFO L125 PetriNetUnfolderBase]: For 895/895 co-relation queries the response was YES. [2024-11-28 03:06:05,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 200 events. 40/200 cut-off events. For 895/895 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 865 event pairs, 10 based on Foata normal form. 6/205 useless extension candidates. Maximal degree in co-relation 928. Up to 98 conditions per place. [2024-11-28 03:06:05,901 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 73 selfloop transitions, 22 changer transitions 13/116 dead transitions. [2024-11-28 03:06:05,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 116 transitions, 1253 flow [2024-11-28 03:06:05,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:06:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 03:06:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 137 transitions. [2024-11-28 03:06:05,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33827160493827163 [2024-11-28 03:06:05,904 INFO L175 Difference]: Start difference. First operand has 149 places, 98 transitions, 888 flow. Second operand 15 states and 137 transitions. [2024-11-28 03:06:05,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 116 transitions, 1253 flow [2024-11-28 03:06:05,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 116 transitions, 1188 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-11-28 03:06:05,915 INFO L231 Difference]: Finished difference. Result has 147 places, 99 transitions, 906 flow [2024-11-28 03:06:05,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=906, PETRI_PLACES=147, PETRI_TRANSITIONS=99} [2024-11-28 03:06:05,917 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 118 predicate places. [2024-11-28 03:06:05,917 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 99 transitions, 906 flow [2024-11-28 03:06:05,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:05,917 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:05,917 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:05,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:06:05,918 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:06:05,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:05,919 INFO L85 PathProgramCache]: Analyzing trace with hash -220561852, now seen corresponding path program 3 times [2024-11-28 03:06:05,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:05,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428696298] [2024-11-28 03:06:05,919 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:06:05,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:05,964 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 03:06:05,964 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:06:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:06:08,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:08,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428696298] [2024-11-28 03:06:08,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428696298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:08,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:08,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:06:08,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275540918] [2024-11-28 03:06:08,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:08,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:06:08,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:08,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:06:08,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:06:08,610 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-28 03:06:08,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 99 transitions, 906 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:08,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:08,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-28 03:06:08,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:10,669 INFO L124 PetriNetUnfolderBase]: 34/175 cut-off events. [2024-11-28 03:06:10,669 INFO L125 PetriNetUnfolderBase]: For 732/732 co-relation queries the response was YES. [2024-11-28 03:06:10,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 175 events. 34/175 cut-off events. For 732/732 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 665 event pairs, 9 based on Foata normal form. 3/177 useless extension candidates. Maximal degree in co-relation 759. Up to 77 conditions per place. [2024-11-28 03:06:10,672 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 63 selfloop transitions, 29 changer transitions 8/108 dead transitions. [2024-11-28 03:06:10,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 108 transitions, 1163 flow [2024-11-28 03:06:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:06:10,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:06:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 154 transitions. [2024-11-28 03:06:10,674 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3355119825708061 [2024-11-28 03:06:10,674 INFO L175 Difference]: Start difference. First operand has 147 places, 99 transitions, 906 flow. Second operand 17 states and 154 transitions. [2024-11-28 03:06:10,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 108 transitions, 1163 flow [2024-11-28 03:06:10,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 108 transitions, 1104 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-11-28 03:06:10,685 INFO L231 Difference]: Finished difference. Result has 152 places, 95 transitions, 880 flow [2024-11-28 03:06:10,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=880, PETRI_PLACES=152, PETRI_TRANSITIONS=95} [2024-11-28 03:06:10,686 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2024-11-28 03:06:10,687 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 95 transitions, 880 flow [2024-11-28 03:06:10,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:10,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:10,687 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:10,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:06:10,688 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:06:10,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:10,688 INFO L85 PathProgramCache]: Analyzing trace with hash 194276798, now seen corresponding path program 2 times [2024-11-28 03:06:10,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:10,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206248994] [2024-11-28 03:06:10,689 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:06:10,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:10,727 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:06:10,727 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:06:13,290 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:06:13,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:13,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206248994] [2024-11-28 03:06:13,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206248994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:13,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:13,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:06:13,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50043578] [2024-11-28 03:06:13,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:13,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:06:13,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:13,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:06:13,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:06:13,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-28 03:06:13,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 95 transitions, 880 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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 03:06:13,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:13,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-28 03:06:13,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:14,445 INFO L124 PetriNetUnfolderBase]: 41/191 cut-off events. [2024-11-28 03:06:14,445 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-11-28 03:06:14,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 191 events. 41/191 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 743 event pairs, 12 based on Foata normal form. 3/194 useless extension candidates. Maximal degree in co-relation 915. Up to 82 conditions per place. [2024-11-28 03:06:14,447 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 85 selfloop transitions, 30 changer transitions 0/116 dead transitions. [2024-11-28 03:06:14,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 116 transitions, 1282 flow [2024-11-28 03:06:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:06:14,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 03:06:14,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 116 transitions. [2024-11-28 03:06:14,449 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28641975308641976 [2024-11-28 03:06:14,449 INFO L175 Difference]: Start difference. First operand has 152 places, 95 transitions, 880 flow. Second operand 15 states and 116 transitions. [2024-11-28 03:06:14,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 116 transitions, 1282 flow [2024-11-28 03:06:14,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 116 transitions, 1210 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-11-28 03:06:14,461 INFO L231 Difference]: Finished difference. Result has 153 places, 104 transitions, 1001 flow [2024-11-28 03:06:14,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1001, PETRI_PLACES=153, PETRI_TRANSITIONS=104} [2024-11-28 03:06:14,462 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 124 predicate places. [2024-11-28 03:06:14,462 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 104 transitions, 1001 flow [2024-11-28 03:06:14,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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 03:06:14,462 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:14,463 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:14,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 03:06:14,463 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:06:14,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:14,464 INFO L85 PathProgramCache]: Analyzing trace with hash -242757172, now seen corresponding path program 3 times [2024-11-28 03:06:14,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:14,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567605066] [2024-11-28 03:06:14,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:06:14,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:14,513 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 03:06:14,514 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:06:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:06:16,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:16,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567605066] [2024-11-28 03:06:16,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567605066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:16,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:16,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:06:16,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326976497] [2024-11-28 03:06:16,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:16,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:06:16,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:16,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:06:16,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:06:16,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-28 03:06:16,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 104 transitions, 1001 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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 03:06:16,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:16,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-28 03:06:16,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:18,365 INFO L124 PetriNetUnfolderBase]: 40/187 cut-off events. [2024-11-28 03:06:18,365 INFO L125 PetriNetUnfolderBase]: For 676/676 co-relation queries the response was YES. [2024-11-28 03:06:18,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 187 events. 40/187 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 716 event pairs, 10 based on Foata normal form. 3/190 useless extension candidates. Maximal degree in co-relation 907. Up to 40 conditions per place. [2024-11-28 03:06:18,367 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 72 selfloop transitions, 50 changer transitions 0/123 dead transitions. [2024-11-28 03:06:18,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 123 transitions, 1401 flow [2024-11-28 03:06:18,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:06:18,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:06:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 127 transitions. [2024-11-28 03:06:18,368 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2766884531590414 [2024-11-28 03:06:18,368 INFO L175 Difference]: Start difference. First operand has 153 places, 104 transitions, 1001 flow. Second operand 17 states and 127 transitions. [2024-11-28 03:06:18,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 123 transitions, 1401 flow [2024-11-28 03:06:18,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 123 transitions, 1322 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-11-28 03:06:18,380 INFO L231 Difference]: Finished difference. Result has 155 places, 111 transitions, 1146 flow [2024-11-28 03:06:18,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1146, PETRI_PLACES=155, PETRI_TRANSITIONS=111} [2024-11-28 03:06:18,381 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-11-28 03:06:18,381 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 111 transitions, 1146 flow [2024-11-28 03:06:18,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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 03:06:18,381 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:18,381 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:18,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 03:06:18,382 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:06:18,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:18,382 INFO L85 PathProgramCache]: Analyzing trace with hash 466160614, now seen corresponding path program 4 times [2024-11-28 03:06:18,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:18,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613365680] [2024-11-28 03:06:18,383 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:06:18,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:18,429 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:06:18,430 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:06:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:06:22,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:22,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613365680] [2024-11-28 03:06:22,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613365680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:22,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:22,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:06:22,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449029996] [2024-11-28 03:06:22,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:22,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:06:22,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:22,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:06:22,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:06:22,111 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 03:06:22,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 111 transitions, 1146 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:22,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:22,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 03:06:22,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:24,023 INFO L124 PetriNetUnfolderBase]: 33/186 cut-off events. [2024-11-28 03:06:24,023 INFO L125 PetriNetUnfolderBase]: For 925/925 co-relation queries the response was YES. [2024-11-28 03:06:24,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 186 events. 33/186 cut-off events. For 925/925 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 766 event pairs, 5 based on Foata normal form. 3/189 useless extension candidates. Maximal degree in co-relation 930. Up to 93 conditions per place. [2024-11-28 03:06:24,025 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 78 selfloop transitions, 20 changer transitions 10/124 dead transitions. [2024-11-28 03:06:24,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 124 transitions, 1479 flow [2024-11-28 03:06:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:06:24,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 03:06:24,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 156 transitions. [2024-11-28 03:06:24,028 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-11-28 03:06:24,028 INFO L175 Difference]: Start difference. First operand has 155 places, 111 transitions, 1146 flow. Second operand 14 states and 156 transitions. [2024-11-28 03:06:24,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 124 transitions, 1479 flow [2024-11-28 03:06:24,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 124 transitions, 1358 flow, removed 14 selfloop flow, removed 16 redundant places. [2024-11-28 03:06:24,042 INFO L231 Difference]: Finished difference. Result has 155 places, 111 transitions, 1092 flow [2024-11-28 03:06:24,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1092, PETRI_PLACES=155, PETRI_TRANSITIONS=111} [2024-11-28 03:06:24,043 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-11-28 03:06:24,043 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 111 transitions, 1092 flow [2024-11-28 03:06:24,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:24,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:24,044 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:24,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 03:06:24,044 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:06:24,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:24,046 INFO L85 PathProgramCache]: Analyzing trace with hash -392119270, now seen corresponding path program 5 times [2024-11-28 03:06:24,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:24,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426521127] [2024-11-28 03:06:24,047 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:06:24,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:24,095 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 03:06:24,095 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:06:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:28,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:28,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426521127] [2024-11-28 03:06:28,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426521127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:28,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675499426] [2024-11-28 03:06:28,275 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:06:28,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:28,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:28,277 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:28,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:06:28,494 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 03:06:28,495 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:06:28,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-28 03:06:28,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:31,238 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 11 [2024-11-28 03:06:31,766 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:06:31,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:06:32,160 INFO L349 Elim1Store]: treesize reduction 180, result has 38.1 percent of original size [2024-11-28 03:06:32,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 90 treesize of output 141 [2024-11-28 03:06:33,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:06:33,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 455 treesize of output 313 [2024-11-28 03:06:35,244 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:06:35,244 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:06:35,857 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 03:06:35,866 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 15 treesize of output 8 [2024-11-28 03:06:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:06:36,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675499426] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:36,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:06:36,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [24, 25] total 55 [2024-11-28 03:06:36,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110018601] [2024-11-28 03:06:36,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:36,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:06:36,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:36,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:06:36,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=2756, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 03:06:36,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 03:06:36,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 111 transitions, 1092 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 03:06:36,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:36,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 03:06:36,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:37,622 INFO L124 PetriNetUnfolderBase]: 28/166 cut-off events. [2024-11-28 03:06:37,622 INFO L125 PetriNetUnfolderBase]: For 700/701 co-relation queries the response was YES. [2024-11-28 03:06:37,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 166 events. 28/166 cut-off events. For 700/701 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 622 event pairs, 4 based on Foata normal form. 4/170 useless extension candidates. Maximal degree in co-relation 809. Up to 47 conditions per place. [2024-11-28 03:06:37,623 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 53 selfloop transitions, 39 changer transitions 13/119 dead transitions. [2024-11-28 03:06:37,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 119 transitions, 1332 flow [2024-11-28 03:06:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:06:37,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 03:06:37,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 233 transitions. [2024-11-28 03:06:37,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39225589225589225 [2024-11-28 03:06:37,625 INFO L175 Difference]: Start difference. First operand has 155 places, 111 transitions, 1092 flow. Second operand 22 states and 233 transitions. [2024-11-28 03:06:37,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 119 transitions, 1332 flow [2024-11-28 03:06:37,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 119 transitions, 1283 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-11-28 03:06:37,633 INFO L231 Difference]: Finished difference. Result has 165 places, 98 transitions, 986 flow [2024-11-28 03:06:37,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=986, PETRI_PLACES=165, PETRI_TRANSITIONS=98} [2024-11-28 03:06:37,634 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 136 predicate places. [2024-11-28 03:06:37,634 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 98 transitions, 986 flow [2024-11-28 03:06:37,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 03:06:37,635 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:37,635 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:37,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:06:37,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 03:06:37,836 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:06:37,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:37,836 INFO L85 PathProgramCache]: Analyzing trace with hash 679188904, now seen corresponding path program 4 times [2024-11-28 03:06:37,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:37,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859356783] [2024-11-28 03:06:37,836 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:06:37,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:37,880 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:06:37,881 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:06:50,683 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:06:50,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:50,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859356783] [2024-11-28 03:06:50,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859356783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:50,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:50,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:06:50,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952752008] [2024-11-28 03:06:50,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:50,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:06:50,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:50,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:06:50,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:06:50,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 03:06:50,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 98 transitions, 986 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 03:06:50,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:50,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 03:06:50,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:55,813 INFO L124 PetriNetUnfolderBase]: 22/150 cut-off events. [2024-11-28 03:06:55,813 INFO L125 PetriNetUnfolderBase]: For 581/581 co-relation queries the response was YES. [2024-11-28 03:06:55,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 150 events. 22/150 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 527 event pairs, 6 based on Foata normal form. 3/153 useless extension candidates. Maximal degree in co-relation 731. Up to 61 conditions per place. [2024-11-28 03:06:55,815 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 64 selfloop transitions, 16 changer transitions 9/104 dead transitions. [2024-11-28 03:06:55,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 104 transitions, 1182 flow [2024-11-28 03:06:55,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:06:55,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 03:06:55,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-11-28 03:06:55,819 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-11-28 03:06:55,819 INFO L175 Difference]: Start difference. First operand has 165 places, 98 transitions, 986 flow. Second operand 13 states and 143 transitions. [2024-11-28 03:06:55,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 104 transitions, 1182 flow [2024-11-28 03:06:55,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 104 transitions, 1064 flow, removed 7 selfloop flow, removed 20 redundant places. [2024-11-28 03:06:55,829 INFO L231 Difference]: Finished difference. Result has 149 places, 94 transitions, 874 flow [2024-11-28 03:06:55,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=874, PETRI_PLACES=149, PETRI_TRANSITIONS=94} [2024-11-28 03:06:55,830 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places. [2024-11-28 03:06:55,830 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 94 transitions, 874 flow [2024-11-28 03:06:55,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 03:06:55,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:55,830 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:55,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 03:06:55,831 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:06:55,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:55,831 INFO L85 PathProgramCache]: Analyzing trace with hash 533559524, now seen corresponding path program 1 times [2024-11-28 03:06:55,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:55,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270569493] [2024-11-28 03:06:55,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:55,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:06:58,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:58,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270569493] [2024-11-28 03:06:58,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270569493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:58,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:58,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:06:58,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063256633] [2024-11-28 03:06:58,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:58,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:06:58,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:58,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:06:58,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:06:58,336 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-28 03:06:58,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 94 transitions, 874 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 03:06:58,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:58,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-28 03:06:58,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:58,915 INFO L124 PetriNetUnfolderBase]: 22/138 cut-off events. [2024-11-28 03:06:58,915 INFO L125 PetriNetUnfolderBase]: For 502/502 co-relation queries the response was YES. [2024-11-28 03:06:58,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 138 events. 22/138 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 421 event pairs, 3 based on Foata normal form. 2/140 useless extension candidates. Maximal degree in co-relation 678. Up to 55 conditions per place. [2024-11-28 03:06:58,917 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 63 selfloop transitions, 10 changer transitions 12/96 dead transitions. [2024-11-28 03:06:58,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 96 transitions, 1038 flow [2024-11-28 03:06:58,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:06:58,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 03:06:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2024-11-28 03:06:58,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-11-28 03:06:58,921 INFO L175 Difference]: Start difference. First operand has 149 places, 94 transitions, 874 flow. Second operand 8 states and 76 transitions. [2024-11-28 03:06:58,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 96 transitions, 1038 flow [2024-11-28 03:06:58,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 96 transitions, 974 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-11-28 03:06:58,925 INFO L231 Difference]: Finished difference. Result has 132 places, 84 transitions, 779 flow [2024-11-28 03:06:58,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=779, PETRI_PLACES=132, PETRI_TRANSITIONS=84} [2024-11-28 03:06:58,926 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 103 predicate places. [2024-11-28 03:06:58,926 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 84 transitions, 779 flow [2024-11-28 03:06:58,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 03:06:58,926 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:58,926 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:58,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 03:06:58,927 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:06:58,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:58,928 INFO L85 PathProgramCache]: Analyzing trace with hash -801223763, now seen corresponding path program 1 times [2024-11-28 03:06:58,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:58,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894531131] [2024-11-28 03:06:58,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:58,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:07:03,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:03,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894531131] [2024-11-28 03:07:03,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894531131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:03,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242642652] [2024-11-28 03:07:03,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:03,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:03,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:03,051 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:03,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:07:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:03,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-28 03:07:03,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:06,912 INFO L349 Elim1Store]: treesize reduction 257, result has 30.7 percent of original size [2024-11-28 03:07:06,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 65 case distinctions, treesize of input 107 treesize of output 155 [2024-11-28 03:07:08,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:07:08,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 485 treesize of output 303 [2024-11-28 03:07:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:07:13,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:07:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-28 03:07:20,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242642652] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:20,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:07:20,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 24] total 34 [2024-11-28 03:07:20,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480968336] [2024-11-28 03:07:20,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:20,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:07:20,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:20,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:07:20,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1092, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:07:20,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-28 03:07:20,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 84 transitions, 779 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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 03:07:20,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:07:20,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-28 03:07:20,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:07:21,148 INFO L124 PetriNetUnfolderBase]: 16/125 cut-off events. [2024-11-28 03:07:21,148 INFO L125 PetriNetUnfolderBase]: For 516/516 co-relation queries the response was YES. [2024-11-28 03:07:21,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 125 events. 16/125 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 373 event pairs, 0 based on Foata normal form. 3/128 useless extension candidates. Maximal degree in co-relation 648. Up to 51 conditions per place. [2024-11-28 03:07:21,150 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 58 selfloop transitions, 6 changer transitions 19/94 dead transitions. [2024-11-28 03:07:21,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 94 transitions, 1031 flow [2024-11-28 03:07:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:07:21,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:07:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-11-28 03:07:21,153 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-11-28 03:07:21,153 INFO L175 Difference]: Start difference. First operand has 132 places, 84 transitions, 779 flow. Second operand 7 states and 69 transitions. [2024-11-28 03:07:21,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 94 transitions, 1031 flow [2024-11-28 03:07:21,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 94 transitions, 934 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-11-28 03:07:21,159 INFO L231 Difference]: Finished difference. Result has 117 places, 75 transitions, 649 flow [2024-11-28 03:07:21,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=649, PETRI_PLACES=117, PETRI_TRANSITIONS=75} [2024-11-28 03:07:21,160 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2024-11-28 03:07:21,160 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 75 transitions, 649 flow [2024-11-28 03:07:21,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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 03:07:21,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:07:21,160 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:07:21,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:07:21,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 03:07:21,361 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:07:21,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:21,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1729397739, now seen corresponding path program 2 times [2024-11-28 03:07:21,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:21,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598577299] [2024-11-28 03:07:21,362 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:07:21,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:21,407 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:07:21,407 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:07:27,897 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:07:27,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:27,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598577299] [2024-11-28 03:07:27,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598577299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:27,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286720032] [2024-11-28 03:07:27,897 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:07:27,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:27,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:27,900 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:27,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:07:28,148 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:07:28,148 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:07:28,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-28 03:07:28,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:32,170 INFO L349 Elim1Store]: treesize reduction 257, result has 30.7 percent of original size [2024-11-28 03:07:32,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 65 case distinctions, treesize of input 107 treesize of output 155 [2024-11-28 03:07:35,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:07:35,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 485 treesize of output 303 [2024-11-28 03:07:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:07:39,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:08:05,839 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-28 03:08:05,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286720032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:08:05,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:08:05,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 24, 6] total 34 [2024-11-28 03:08:05,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852747005] [2024-11-28 03:08:05,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:08:05,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 03:08:05,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:05,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 03:08:05,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1062, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:08:08,360 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-28 03:08:08,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 75 transitions, 649 flow. Second operand has 36 states, 36 states have (on average 5.472222222222222) internal successors, (197), 36 states have internal predecessors, (197), 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 03:08:08,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:08:08,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-28 03:08:08,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:08:17,009 INFO L124 PetriNetUnfolderBase]: 9/88 cut-off events. [2024-11-28 03:08:17,009 INFO L125 PetriNetUnfolderBase]: For 270/270 co-relation queries the response was YES. [2024-11-28 03:08:17,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 88 events. 9/88 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 180 event pairs, 0 based on Foata normal form. 9/97 useless extension candidates. Maximal degree in co-relation 443. Up to 14 conditions per place. [2024-11-28 03:08:17,010 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2024-11-28 03:08:17,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 73 transitions, 762 flow [2024-11-28 03:08:17,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 03:08:17,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-28 03:08:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 162 transitions. [2024-11-28 03:08:17,011 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2 [2024-11-28 03:08:17,012 INFO L175 Difference]: Start difference. First operand has 117 places, 75 transitions, 649 flow. Second operand 30 states and 162 transitions. [2024-11-28 03:08:17,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 73 transitions, 762 flow [2024-11-28 03:08:17,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 73 transitions, 688 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-11-28 03:08:17,014 INFO L231 Difference]: Finished difference. Result has 122 places, 0 transitions, 0 flow [2024-11-28 03:08:17,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=0, PETRI_PLACES=122, PETRI_TRANSITIONS=0} [2024-11-28 03:08:17,015 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 93 predicate places. [2024-11-28 03:08:17,015 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 0 transitions, 0 flow [2024-11-28 03:08:17,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.472222222222222) internal successors, (197), 36 states have internal predecessors, (197), 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 03:08:17,019 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2024-11-28 03:08:17,020 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2024-11-28 03:08:17,020 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2024-11-28 03:08:17,020 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2024-11-28 03:08:17,020 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2024-11-28 03:08:17,021 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2024-11-28 03:08:17,021 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2024-11-28 03:08:17,021 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2024-11-28 03:08:17,021 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2024-11-28 03:08:17,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:08:17,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:08:17,222 INFO L422 BasicCegarLoop]: Path program histogram: [5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 03:08:17,229 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 03:08:17,229 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:08:17,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:08:17 BasicIcfg [2024-11-28 03:08:17,235 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:08:17,236 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:08:17,236 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:08:17,236 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:08:17,237 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:00" (3/4) ... [2024-11-28 03:08:17,239 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 03:08:17,243 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-28 03:08:17,248 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 87 nodes and edges [2024-11-28 03:08:17,249 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-28 03:08:17,249 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 03:08:17,342 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:08:17,342 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:08:17,342 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:08:17,343 INFO L158 Benchmark]: Toolchain (without parser) took 259405.65ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 91.5MB in the beginning and 765.6MB in the end (delta: -674.1MB). Peak memory consumption was 409.3MB. Max. memory is 16.1GB. [2024-11-28 03:08:17,344 INFO L158 Benchmark]: CDTParser took 1.72ms. Allocated memory is still 117.4MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:08:17,344 INFO L158 Benchmark]: CACSL2BoogieTranslator took 810.85ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 61.8MB in the end (delta: 29.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-28 03:08:17,344 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.01ms. Allocated memory is still 117.4MB. Free memory was 61.5MB in the beginning and 59.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:08:17,345 INFO L158 Benchmark]: Boogie Preprocessor took 56.03ms. Allocated memory is still 117.4MB. Free memory was 59.1MB in the beginning and 57.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:08:17,345 INFO L158 Benchmark]: RCFGBuilder took 1416.00ms. Allocated memory is still 117.4MB. Free memory was 57.2MB in the beginning and 73.6MB in the end (delta: -16.4MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2024-11-28 03:08:17,345 INFO L158 Benchmark]: TraceAbstraction took 256932.60ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 73.6MB in the beginning and 770.4MB in the end (delta: -696.8MB). Peak memory consumption was 385.3MB. Max. memory is 16.1GB. [2024-11-28 03:08:17,346 INFO L158 Benchmark]: Witness Printer took 106.36ms. Allocated memory is still 1.2GB. Free memory was 770.4MB in the beginning and 765.6MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:08:17,347 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.72ms. Allocated memory is still 117.4MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 810.85ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 61.8MB in the end (delta: 29.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.01ms. Allocated memory is still 117.4MB. Free memory was 61.5MB in the beginning and 59.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.03ms. Allocated memory is still 117.4MB. Free memory was 59.1MB in the beginning and 57.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1416.00ms. Allocated memory is still 117.4MB. Free memory was 57.2MB in the beginning and 73.6MB in the end (delta: -16.4MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. * TraceAbstraction took 256932.60ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 73.6MB in the beginning and 770.4MB in the end (delta: -696.8MB). Peak memory consumption was 385.3MB. Max. memory is 16.1GB. * Witness Printer took 106.36ms. Allocated memory is still 1.2GB. Free memory was 770.4MB in the beginning and 765.6MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 38 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 256.8s, OverallIterations: 28, TraceHistogramMax: 10, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 67.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1495 SdHoareTripleChecker+Valid, 15.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1348 mSDsluCounter, 2891 SdHoareTripleChecker+Invalid, 14.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2810 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6014 IncrementalHoareTripleChecker+Invalid, 6179 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 81 mSDtfsCounter, 6014 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 906 GetRequests, 243 SyntacticMatches, 85 SemanticMatches, 578 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10309 ImplicationChecksByTransitivity, 114.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1146occurred in iteration=22, InterpolantAutomatonStates: 379, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 184.3s InterpolantComputationTime, 1215 NumberOfCodeBlocks, 945 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 1404 ConstructedInterpolants, 152 QuantifiedInterpolants, 110798 SizeOfPredicates, 90 NumberOfNonLiveVariables, 2054 ConjunctsInSsa, 324 ConjunctsInUnsatCore, 43 InterpolantComputations, 24 PerfectInterpolantSequences, 3519/4407 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 03:08:17,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc2fb5-f948-44bf-a5e6-7c46e5335b74/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE