./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.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_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1 --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 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:37:20,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:37:20,810 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 11:37:20,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:37:20,815 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:37:20,839 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:37:20,839 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:37:20,840 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:37:20,840 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:37:20,840 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:37:20,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:37:20,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:37:20,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:37:20,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:37:20,841 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:37:20,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:37:20,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:37:20,841 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:37:20,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:37:20,842 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:37:20,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:37:20,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:37:20,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:37:20,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:37:20,842 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 11:37:20,842 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 11:37:20,842 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:37:20,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:37:20,842 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:37:20,842 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:37:20,843 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:37:20,843 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:37:20,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:37:20,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:37:20,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:37:20,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:37:20,843 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:37:20,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:37:20,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:37:20,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:37:20,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:37:20,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:37:20,844 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:37:20,844 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:37:20,844 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:37:20,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:37:20,844 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:37:20,844 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:37:20,844 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:37:20,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:37:20,845 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_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1 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 -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2024-12-02 11:37:21,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:37:21,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:37:21,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:37:21,092 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:37:21,092 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:37:21,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2024-12-02 11:37:23,710 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/data/83a8e46ac/ee955c03f5f745f0944f9668920cf00c/FLAGff93eb796 [2024-12-02 11:37:23,979 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:37:23,979 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2024-12-02 11:37:23,991 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/data/83a8e46ac/ee955c03f5f745f0944f9668920cf00c/FLAGff93eb796 [2024-12-02 11:37:24,003 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/data/83a8e46ac/ee955c03f5f745f0944f9668920cf00c [2024-12-02 11:37:24,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:37:24,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:37:24,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:37:24,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:37:24,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:37:24,011 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e40a530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24, skipping insertion in model container [2024-12-02 11:37:24,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,036 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:37:24,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:37:24,323 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:37:24,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:37:24,388 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:37:24,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24 WrapperNode [2024-12-02 11:37:24,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:37:24,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:37:24,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:37:24,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:37:24,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,421 INFO L138 Inliner]: procedures = 172, calls = 31, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 100 [2024-12-02 11:37:24,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:37:24,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:37:24,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:37:24,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:37:24,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,429 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,439 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 11:37:24,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,444 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,447 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:37:24,449 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:37:24,449 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:37:24,449 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:37:24,450 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24" (1/1) ... [2024-12-02 11:37:24,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:37:24,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:37:24,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:37:24,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:37:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 11:37:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:37:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-12-02 11:37:24,499 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-12-02 11:37:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:37:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 11:37:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:37:24,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:37:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-12-02 11:37:24,499 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-12-02 11:37:24,501 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 11:37:24,592 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:37:24,594 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:37:24,732 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 11:37:24,732 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:37:24,825 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:37:24,825 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 11:37:24,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:37:24 BoogieIcfgContainer [2024-12-02 11:37:24,826 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:37:24,827 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:37:24,828 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:37:24,832 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:37:24,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:37:24" (1/3) ... [2024-12-02 11:37:24,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60703c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:37:24, skipping insertion in model container [2024-12-02 11:37:24,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:37:24" (2/3) ... [2024-12-02 11:37:24,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60703c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:37:24, skipping insertion in model container [2024-12-02 11:37:24,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:37:24" (3/3) ... [2024-12-02 11:37:24,834 INFO L128 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2024-12-02 11:37:24,845 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:37:24,846 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG read_write_lock-2.i that has 3 procedures, 36 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2024-12-02 11:37:24,846 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 11:37:24,900 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 11:37:24,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 56 transitions, 140 flow [2024-12-02 11:37:24,961 INFO L124 PetriNetUnfolderBase]: 0/52 cut-off events. [2024-12-02 11:37:24,964 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 11:37:24,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 52 events. 0/52 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-12-02 11:37:24,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 56 transitions, 140 flow [2024-12-02 11:37:24,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 121 flow [2024-12-02 11:37:24,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:37:24,987 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;@7f78d63f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:37:24,987 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-12-02 11:37:24,993 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 11:37:24,993 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-12-02 11:37:24,993 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 11:37:24,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:37:24,994 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 11:37:24,994 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-12-02 11:37:24,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:37:24,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1123476844, now seen corresponding path program 1 times [2024-12-02 11:37:25,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:37:25,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951083113] [2024-12-02 11:37:25,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:37:25,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:37:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:37:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:37:25,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:37:25,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951083113] [2024-12-02 11:37:25,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951083113] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:37:25,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:37:25,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 11:37:25,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950312011] [2024-12-02 11:37:25,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:37:25,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:37:25,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:37:25,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:37:25,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:37:25,234 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-12-02 11:37:25,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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) [2024-12-02 11:37:25,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:37:25,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-12-02 11:37:25,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:37:26,711 INFO L124 PetriNetUnfolderBase]: 10434/17352 cut-off events. [2024-12-02 11:37:26,711 INFO L125 PetriNetUnfolderBase]: For 1909/1909 co-relation queries the response was YES. [2024-12-02 11:37:26,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33621 conditions, 17352 events. 10434/17352 cut-off events. For 1909/1909 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 139881 event pairs, 4015 based on Foata normal form. 0/15308 useless extension candidates. Maximal degree in co-relation 28381. Up to 7899 conditions per place. [2024-12-02 11:37:26,807 INFO L140 encePairwiseOnDemand]: 41/56 looper letters, 53 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-12-02 11:37:26,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 304 flow [2024-12-02 11:37:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:37:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 11:37:26,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-12-02 11:37:26,819 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2024-12-02 11:37:26,820 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 121 flow. Second operand 3 states and 122 transitions. [2024-12-02 11:37:26,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 304 flow [2024-12-02 11:37:26,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 282 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-12-02 11:37:26,876 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 176 flow [2024-12-02 11:37:26,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-12-02 11:37:26,881 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2024-12-02 11:37:26,881 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 176 flow [2024-12-02 11:37:26,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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) [2024-12-02 11:37:26,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:37:26,881 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:37:26,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 11:37:26,882 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-12-02 11:37:26,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:37:26,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1117780712, now seen corresponding path program 1 times [2024-12-02 11:37:26,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:37:26,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688779858] [2024-12-02 11:37:26,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:37:26,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:37:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:37:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:37:26,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:37:26,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688779858] [2024-12-02 11:37:26,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688779858] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:37:26,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:37:26,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:37:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690274053] [2024-12-02 11:37:26,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:37:26,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:37:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:37:26,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:37:26,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:37:26,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-12-02 11:37:26,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:26,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:37:26,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-12-02 11:37:26,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:37:28,037 INFO L124 PetriNetUnfolderBase]: 6460/11290 cut-off events. [2024-12-02 11:37:28,037 INFO L125 PetriNetUnfolderBase]: For 3937/3946 co-relation queries the response was YES. [2024-12-02 11:37:28,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25014 conditions, 11290 events. 6460/11290 cut-off events. For 3937/3946 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 89847 event pairs, 1613 based on Foata normal form. 799/11454 useless extension candidates. Maximal degree in co-relation 5371. Up to 3925 conditions per place. [2024-12-02 11:37:28,107 INFO L140 encePairwiseOnDemand]: 41/56 looper letters, 65 selfloop transitions, 11 changer transitions 10/100 dead transitions. [2024-12-02 11:37:28,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 100 transitions, 464 flow [2024-12-02 11:37:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:37:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 11:37:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-12-02 11:37:28,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7321428571428571 [2024-12-02 11:37:28,109 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 176 flow. Second operand 4 states and 164 transitions. [2024-12-02 11:37:28,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 100 transitions, 464 flow [2024-12-02 11:37:28,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 100 transitions, 450 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 11:37:28,124 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 225 flow [2024-12-02 11:37:28,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-12-02 11:37:28,125 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2024-12-02 11:37:28,125 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 225 flow [2024-12-02 11:37:28,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:28,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:37:28,125 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:37:28,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:37:28,126 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-12-02 11:37:28,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:37:28,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1117780711, now seen corresponding path program 1 times [2024-12-02 11:37:28,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:37:28,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958507730] [2024-12-02 11:37:28,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:37:28,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:37:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:37:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:37:28,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:37:28,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958507730] [2024-12-02 11:37:28,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958507730] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:37:28,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:37:28,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:37:28,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258190988] [2024-12-02 11:37:28,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:37:28,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:37:28,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:37:28,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:37:28,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:37:28,209 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-12-02 11:37:28,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:28,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:37:28,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-12-02 11:37:28,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:37:28,942 INFO L124 PetriNetUnfolderBase]: 5319/9645 cut-off events. [2024-12-02 11:37:28,942 INFO L125 PetriNetUnfolderBase]: For 4958/4961 co-relation queries the response was YES. [2024-12-02 11:37:28,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22674 conditions, 9645 events. 5319/9645 cut-off events. For 4958/4961 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 77781 event pairs, 1334 based on Foata normal form. 317/9814 useless extension candidates. Maximal degree in co-relation 4922. Up to 3377 conditions per place. [2024-12-02 11:37:28,978 INFO L140 encePairwiseOnDemand]: 41/56 looper letters, 65 selfloop transitions, 15 changer transitions 4/98 dead transitions. [2024-12-02 11:37:28,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 98 transitions, 503 flow [2024-12-02 11:37:28,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:37:28,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 11:37:28,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-12-02 11:37:28,980 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2024-12-02 11:37:28,980 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 225 flow. Second operand 4 states and 158 transitions. [2024-12-02 11:37:28,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 98 transitions, 503 flow [2024-12-02 11:37:28,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 98 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 11:37:28,988 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 298 flow [2024-12-02 11:37:28,989 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-12-02 11:37:28,989 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2024-12-02 11:37:28,989 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 298 flow [2024-12-02 11:37:28,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:28,990 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:37:28,990 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:37:28,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:37:28,990 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-12-02 11:37:28,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:37:28,991 INFO L85 PathProgramCache]: Analyzing trace with hash -608811136, now seen corresponding path program 1 times [2024-12-02 11:37:28,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:37:28,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630467870] [2024-12-02 11:37:28,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:37:28,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:37:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:37:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:37:29,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:37:29,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630467870] [2024-12-02 11:37:29,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630467870] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:37:29,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:37:29,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:37:29,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111425269] [2024-12-02 11:37:29,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:37:29,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:37:29,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:37:29,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:37:29,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:37:29,059 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-12-02 11:37:29,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:29,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:37:29,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-12-02 11:37:29,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:37:29,630 INFO L124 PetriNetUnfolderBase]: 5389/9686 cut-off events. [2024-12-02 11:37:29,630 INFO L125 PetriNetUnfolderBase]: For 9389/9392 co-relation queries the response was YES. [2024-12-02 11:37:29,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24131 conditions, 9686 events. 5389/9686 cut-off events. For 9389/9392 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 77273 event pairs, 2960 based on Foata normal form. 214/9700 useless extension candidates. Maximal degree in co-relation 5162. Up to 6046 conditions per place. [2024-12-02 11:37:29,655 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 51 selfloop transitions, 11 changer transitions 6/82 dead transitions. [2024-12-02 11:37:29,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 82 transitions, 494 flow [2024-12-02 11:37:29,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:37:29,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 11:37:29,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-12-02 11:37:29,656 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2024-12-02 11:37:29,656 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 298 flow. Second operand 3 states and 116 transitions. [2024-12-02 11:37:29,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 82 transitions, 494 flow [2024-12-02 11:37:29,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 462 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-12-02 11:37:29,665 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 312 flow [2024-12-02 11:37:29,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-12-02 11:37:29,666 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 5 predicate places. [2024-12-02 11:37:29,666 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 312 flow [2024-12-02 11:37:29,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:29,667 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:37:29,667 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:37:29,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:37:29,667 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-12-02 11:37:29,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:37:29,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1661699421, now seen corresponding path program 1 times [2024-12-02 11:37:29,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:37:29,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624439132] [2024-12-02 11:37:29,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:37:29,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:37:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:37:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:37:29,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:37:29,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624439132] [2024-12-02 11:37:29,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624439132] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:37:29,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:37:29,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:37:29,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243629580] [2024-12-02 11:37:29,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:37:29,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:37:29,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:37:29,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:37:29,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:37:29,777 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-12-02 11:37:29,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:29,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:37:29,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-12-02 11:37:29,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:37:30,380 INFO L124 PetriNetUnfolderBase]: 4286/7907 cut-off events. [2024-12-02 11:37:30,380 INFO L125 PetriNetUnfolderBase]: For 9884/9887 co-relation queries the response was YES. [2024-12-02 11:37:30,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20046 conditions, 7907 events. 4286/7907 cut-off events. For 9884/9887 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 62512 event pairs, 772 based on Foata normal form. 95/7883 useless extension candidates. Maximal degree in co-relation 6223. Up to 2687 conditions per place. [2024-12-02 11:37:30,408 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 103 selfloop transitions, 20 changer transitions 5/141 dead transitions. [2024-12-02 11:37:30,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 141 transitions, 801 flow [2024-12-02 11:37:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:37:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 11:37:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 282 transitions. [2024-12-02 11:37:30,410 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-12-02 11:37:30,410 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 312 flow. Second operand 9 states and 282 transitions. [2024-12-02 11:37:30,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 141 transitions, 801 flow [2024-12-02 11:37:30,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 141 transitions, 761 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-12-02 11:37:30,432 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 386 flow [2024-12-02 11:37:30,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=386, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2024-12-02 11:37:30,432 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 14 predicate places. [2024-12-02 11:37:30,432 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 386 flow [2024-12-02 11:37:30,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:30,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:37:30,433 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:37:30,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:37:30,433 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-12-02 11:37:30,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:37:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1693254602, now seen corresponding path program 1 times [2024-12-02 11:37:30,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:37:30,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076263387] [2024-12-02 11:37:30,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:37:30,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:37:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:37:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:37:30,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:37:30,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076263387] [2024-12-02 11:37:30,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076263387] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:37:30,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:37:30,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:37:30,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430728876] [2024-12-02 11:37:30,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:37:30,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:37:30,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:37:30,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:37:30,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:37:30,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-12-02 11:37:30,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:30,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:37:30,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-12-02 11:37:30,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:37:31,156 INFO L124 PetriNetUnfolderBase]: 3813/7102 cut-off events. [2024-12-02 11:37:31,156 INFO L125 PetriNetUnfolderBase]: For 10247/10250 co-relation queries the response was YES. [2024-12-02 11:37:31,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18068 conditions, 7102 events. 3813/7102 cut-off events. For 10247/10250 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 56120 event pairs, 582 based on Foata normal form. 187/7193 useless extension candidates. Maximal degree in co-relation 14712. Up to 1693 conditions per place. [2024-12-02 11:37:31,184 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 61 selfloop transitions, 12 changer transitions 24/110 dead transitions. [2024-12-02 11:37:31,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 110 transitions, 635 flow [2024-12-02 11:37:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:37:31,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 11:37:31,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-12-02 11:37:31,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5459183673469388 [2024-12-02 11:37:31,187 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 386 flow. Second operand 7 states and 214 transitions. [2024-12-02 11:37:31,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 110 transitions, 635 flow [2024-12-02 11:37:31,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 110 transitions, 604 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-12-02 11:37:31,228 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 263 flow [2024-12-02 11:37:31,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=263, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2024-12-02 11:37:31,229 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 14 predicate places. [2024-12-02 11:37:31,229 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 263 flow [2024-12-02 11:37:31,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:31,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:37:31,229 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:37:31,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 11:37:31,229 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-12-02 11:37:31,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:37:31,230 INFO L85 PathProgramCache]: Analyzing trace with hash -742554811, now seen corresponding path program 1 times [2024-12-02 11:37:31,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:37:31,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519257758] [2024-12-02 11:37:31,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:37:31,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:37:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:37:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:37:31,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:37:31,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519257758] [2024-12-02 11:37:31,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519257758] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:37:31,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:37:31,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:37:31,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405111192] [2024-12-02 11:37:31,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:37:31,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:37:31,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:37:31,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:37:31,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:37:31,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-12-02 11:37:31,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:31,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:37:31,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-12-02 11:37:31,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:37:31,846 INFO L124 PetriNetUnfolderBase]: 2906/5447 cut-off events. [2024-12-02 11:37:31,846 INFO L125 PetriNetUnfolderBase]: For 6827/6830 co-relation queries the response was YES. [2024-12-02 11:37:31,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14054 conditions, 5447 events. 2906/5447 cut-off events. For 6827/6830 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 40992 event pairs, 583 based on Foata normal form. 87/5425 useless extension candidates. Maximal degree in co-relation 13614. Up to 1750 conditions per place. [2024-12-02 11:37:31,870 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 79 selfloop transitions, 16 changer transitions 5/113 dead transitions. [2024-12-02 11:37:31,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 113 transitions, 643 flow [2024-12-02 11:37:31,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:37:31,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 11:37:31,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 255 transitions. [2024-12-02 11:37:31,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-12-02 11:37:31,871 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 263 flow. Second operand 9 states and 255 transitions. [2024-12-02 11:37:31,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 113 transitions, 643 flow [2024-12-02 11:37:31,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 113 transitions, 573 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-12-02 11:37:31,892 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 299 flow [2024-12-02 11:37:31,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=299, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2024-12-02 11:37:31,893 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2024-12-02 11:37:31,893 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 299 flow [2024-12-02 11:37:31,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:31,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:37:31,893 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:37:31,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 11:37:31,894 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-12-02 11:37:31,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:37:31,894 INFO L85 PathProgramCache]: Analyzing trace with hash -742554812, now seen corresponding path program 1 times [2024-12-02 11:37:31,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:37:31,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384189265] [2024-12-02 11:37:31,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:37:31,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:37:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:37:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:37:31,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:37:31,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384189265] [2024-12-02 11:37:31,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384189265] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:37:31,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:37:31,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:37:31,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992755631] [2024-12-02 11:37:31,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:37:31,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:37:31,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:37:31,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:37:31,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:37:31,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-12-02 11:37:31,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:31,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:37:31,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-12-02 11:37:31,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:37:32,471 INFO L124 PetriNetUnfolderBase]: 2462/4705 cut-off events. [2024-12-02 11:37:32,471 INFO L125 PetriNetUnfolderBase]: For 5980/5983 co-relation queries the response was YES. [2024-12-02 11:37:32,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11361 conditions, 4705 events. 2462/4705 cut-off events. For 5980/5983 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 35489 event pairs, 367 based on Foata normal form. 171/4769 useless extension candidates. Maximal degree in co-relation 8909. Up to 1393 conditions per place. [2024-12-02 11:37:32,488 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 55 selfloop transitions, 8 changer transitions 17/93 dead transitions. [2024-12-02 11:37:32,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 93 transitions, 486 flow [2024-12-02 11:37:32,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:37:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 11:37:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-12-02 11:37:32,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5076530612244898 [2024-12-02 11:37:32,490 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 299 flow. Second operand 7 states and 199 transitions. [2024-12-02 11:37:32,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 93 transitions, 486 flow [2024-12-02 11:37:32,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 93 transitions, 461 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-12-02 11:37:32,512 INFO L231 Difference]: Finished difference. Result has 72 places, 46 transitions, 171 flow [2024-12-02 11:37:32,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=72, PETRI_TRANSITIONS=46} [2024-12-02 11:37:32,513 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2024-12-02 11:37:32,513 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 46 transitions, 171 flow [2024-12-02 11:37:32,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:32,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:37:32,513 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:37:32,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 11:37:32,513 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-12-02 11:37:32,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:37:32,514 INFO L85 PathProgramCache]: Analyzing trace with hash 272006172, now seen corresponding path program 1 times [2024-12-02 11:37:32,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:37:32,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382953045] [2024-12-02 11:37:32,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:37:32,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:37:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:37:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:37:32,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:37:32,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382953045] [2024-12-02 11:37:32,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382953045] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:37:32,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:37:32,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:37:32,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842731492] [2024-12-02 11:37:32,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:37:32,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:37:32,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:37:32,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:37:32,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:37:32,620 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-12-02 11:37:32,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 46 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:32,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:37:32,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-12-02 11:37:32,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:37:32,883 INFO L124 PetriNetUnfolderBase]: 1669/3241 cut-off events. [2024-12-02 11:37:32,883 INFO L125 PetriNetUnfolderBase]: For 2771/2774 co-relation queries the response was YES. [2024-12-02 11:37:32,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7634 conditions, 3241 events. 1669/3241 cut-off events. For 2771/2774 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 23566 event pairs, 258 based on Foata normal form. 49/3243 useless extension candidates. Maximal degree in co-relation 7230. Up to 751 conditions per place. [2024-12-02 11:37:32,894 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 44 selfloop transitions, 6 changer transitions 16/79 dead transitions. [2024-12-02 11:37:32,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 79 transitions, 378 flow [2024-12-02 11:37:32,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:37:32,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 11:37:32,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-12-02 11:37:32,896 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4744897959183674 [2024-12-02 11:37:32,896 INFO L175 Difference]: Start difference. First operand has 72 places, 46 transitions, 171 flow. Second operand 7 states and 186 transitions. [2024-12-02 11:37:32,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 79 transitions, 378 flow [2024-12-02 11:37:32,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 79 transitions, 344 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-12-02 11:37:32,905 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 128 flow [2024-12-02 11:37:32,905 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2024-12-02 11:37:32,905 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2024-12-02 11:37:32,906 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 128 flow [2024-12-02 11:37:32,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:32,906 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:37:32,906 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:37:32,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 11:37:32,906 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-12-02 11:37:32,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:37:32,907 INFO L85 PathProgramCache]: Analyzing trace with hash 271992298, now seen corresponding path program 1 times [2024-12-02 11:37:32,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:37:32,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331476506] [2024-12-02 11:37:32,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:37:32,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:37:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:37:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:37:32,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:37:32,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331476506] [2024-12-02 11:37:32,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331476506] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:37:32,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:37:32,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:37:32,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140828589] [2024-12-02 11:37:32,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:37:32,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:37:32,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:37:32,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:37:32,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:37:32,986 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-12-02 11:37:32,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:32,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:37:32,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-12-02 11:37:32,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:37:33,172 INFO L124 PetriNetUnfolderBase]: 1157/2343 cut-off events. [2024-12-02 11:37:33,172 INFO L125 PetriNetUnfolderBase]: For 1346/1349 co-relation queries the response was YES. [2024-12-02 11:37:33,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5199 conditions, 2343 events. 1157/2343 cut-off events. For 1346/1349 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16799 event pairs, 237 based on Foata normal form. 45/2344 useless extension candidates. Maximal degree in co-relation 1349. Up to 689 conditions per place. [2024-12-02 11:37:33,175 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2024-12-02 11:37:33,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 291 flow [2024-12-02 11:37:33,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:37:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 11:37:33,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-12-02 11:37:33,176 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4413265306122449 [2024-12-02 11:37:33,176 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 128 flow. Second operand 7 states and 173 transitions. [2024-12-02 11:37:33,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 291 flow [2024-12-02 11:37:33,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 66 transitions, 269 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-12-02 11:37:33,178 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2024-12-02 11:37:33,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2024-12-02 11:37:33,179 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, -10 predicate places. [2024-12-02 11:37:33,179 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2024-12-02 11:37:33,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:37:33,181 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2024-12-02 11:37:33,181 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2024-12-02 11:37:33,181 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2024-12-02 11:37:33,181 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2024-12-02 11:37:33,181 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 16 remaining) [2024-12-02 11:37:33,181 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 16 remaining) [2024-12-02 11:37:33,181 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 16 remaining) [2024-12-02 11:37:33,181 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2024-12-02 11:37:33,181 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2024-12-02 11:37:33,182 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2024-12-02 11:37:33,182 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2024-12-02 11:37:33,182 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2024-12-02 11:37:33,182 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2024-12-02 11:37:33,182 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2024-12-02 11:37:33,182 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2024-12-02 11:37:33,182 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2024-12-02 11:37:33,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 11:37:33,182 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:37:33,187 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-12-02 11:37:33,187 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 11:37:33,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:37:33 BasicIcfg [2024-12-02 11:37:33,192 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 11:37:33,192 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 11:37:33,192 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 11:37:33,192 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 11:37:33,193 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:37:24" (3/4) ... [2024-12-02 11:37:33,194 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 11:37:33,196 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2024-12-02 11:37:33,196 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2024-12-02 11:37:33,199 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2024-12-02 11:37:33,199 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-12-02 11:37:33,199 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-12-02 11:37:33,199 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-12-02 11:37:33,248 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 11:37:33,248 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 11:37:33,248 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 11:37:33,249 INFO L158 Benchmark]: Toolchain (without parser) took 9242.61ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 116.4MB in the beginning and 897.0MB in the end (delta: -780.7MB). Peak memory consumption was 242.8MB. Max. memory is 16.1GB. [2024-12-02 11:37:33,249 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:37:33,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.71ms. Allocated memory is still 142.6MB. Free memory was 116.2MB in the beginning and 96.7MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 11:37:33,249 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.94ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 94.9MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 11:37:33,250 INFO L158 Benchmark]: Boogie Preprocessor took 27.05ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 93.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:37:33,250 INFO L158 Benchmark]: RCFGBuilder took 376.84ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 71.5MB in the end (delta: 21.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 11:37:33,250 INFO L158 Benchmark]: TraceAbstraction took 8364.23ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 70.7MB in the beginning and 901.4MB in the end (delta: -830.7MB). Peak memory consumption was 192.5MB. Max. memory is 16.1GB. [2024-12-02 11:37:33,250 INFO L158 Benchmark]: Witness Printer took 55.95ms. Allocated memory is still 1.2GB. Free memory was 901.4MB in the beginning and 897.0MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 11:37:33,252 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 381.71ms. Allocated memory is still 142.6MB. Free memory was 116.2MB in the beginning and 96.7MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.94ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 94.9MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.05ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 93.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 376.84ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 71.5MB in the end (delta: 21.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8364.23ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 70.7MB in the beginning and 901.4MB in the end (delta: -830.7MB). Peak memory consumption was 192.5MB. Max. memory is 16.1GB. * Witness Printer took 55.95ms. Allocated memory is still 1.2GB. Free memory was 901.4MB in the beginning and 897.0MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: 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 7 procedures, 82 locations, 16 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: 8.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 584 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 550 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1401 IncrementalHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 23 mSDtfsCounter, 1401 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=386occurred in iteration=5, InterpolantAutomatonStates: 60, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 460 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 11:37:33,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db60ebc-e3d4-479c-a3cf-dcd8c77b13dd/bin/uautomizer-verify-84ZbGMXZE1/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