./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/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_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:35:54,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:35:54,522 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 12:35:54,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:35:54,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:35:54,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:35:54,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:35:54,551 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:35:54,551 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:35:54,551 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:35:54,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:35:54,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:35:54,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:35:54,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:35:54,552 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:35:54,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:35:54,552 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:35:54,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:35:54,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:35:54,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:35:54,552 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 12:35:54,552 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 12:35:54,552 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 12:35:54,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:35:54,553 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 12:35:54,553 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:35:54,553 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:35:54,553 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:35:54,553 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:35:54,553 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:35:54,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:35:54,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:35:54,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:35:54,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:35:54,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:35:54,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:35:54,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:35:54,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:35:54,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:35:54,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:35:54,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:35:54,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:35:54,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:35:54,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:35:54,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:35:54,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:35:54,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:35:54,555 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_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2024-12-02 12:35:54,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:35:54,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:35:54,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:35:54,806 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:35:54,807 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:35:54,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2024-12-02 12:35:57,464 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/data/de2a80800/e39c3cc6de4a462cb61d3bc967e1c650/FLAG3f02ba25f [2024-12-02 12:35:57,703 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:35:57,703 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2024-12-02 12:35:57,715 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/data/de2a80800/e39c3cc6de4a462cb61d3bc967e1c650/FLAG3f02ba25f [2024-12-02 12:35:58,038 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/data/de2a80800/e39c3cc6de4a462cb61d3bc967e1c650 [2024-12-02 12:35:58,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:35:58,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:35:58,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:35:58,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:35:58,044 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:35:58,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c426da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58, skipping insertion in model container [2024-12-02 12:35:58,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,070 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:35:58,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:35:58,421 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:35:58,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:35:58,520 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:35:58,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58 WrapperNode [2024-12-02 12:35:58,521 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:35:58,522 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:35:58,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:35:58,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:35:58,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,539 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,559 INFO L138 Inliner]: procedures = 265, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 126 [2024-12-02 12:35:58,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:35:58,560 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:35:58,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:35:58,560 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:35:58,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,572 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,585 INFO L175 MemorySlicer]: Split 64 memory accesses to 1 slices as follows [64]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 2 writes are split as follows [2]. [2024-12-02 12:35:58,585 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,585 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,592 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,593 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:35:58,600 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:35:58,600 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:35:58,600 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:35:58,601 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58" (1/1) ... [2024-12-02 12:35:58,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:35:58,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:35:58,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:35:58,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:35:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 12:35:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 12:35:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 12:35:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 12:35:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:35:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-02 12:35:58,648 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-02 12:35:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:35:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:35:58,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:35:58,650 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 12:35:58,742 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:35:58,743 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:35:58,964 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 12:35:58,964 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:35:59,295 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:35:59,295 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 12:35:59,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:35:59 BoogieIcfgContainer [2024-12-02 12:35:59,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:35:59,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:35:59,298 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:35:59,313 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:35:59,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:35:58" (1/3) ... [2024-12-02 12:35:59,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f682cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:35:59, skipping insertion in model container [2024-12-02 12:35:59,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:35:58" (2/3) ... [2024-12-02 12:35:59,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f682cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:35:59, skipping insertion in model container [2024-12-02 12:35:59,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:35:59" (3/3) ... [2024-12-02 12:35:59,315 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2024-12-02 12:35:59,329 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:35:59,330 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_07-tricky_address2.i that has 2 procedures, 29 locations, 1 initial locations, 1 loop locations, and 9 error locations. [2024-12-02 12:35:59,331 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 12:35:59,367 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 12:35:59,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 62 flow [2024-12-02 12:35:59,423 INFO L124 PetriNetUnfolderBase]: 1/28 cut-off events. [2024-12-02 12:35:59,425 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:35:59,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 28 events. 1/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 53 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 3. Up to 2 conditions per place. [2024-12-02 12:35:59,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 62 flow [2024-12-02 12:35:59,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 28 transitions, 59 flow [2024-12-02 12:35:59,437 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:35:59,448 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=None, 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;@5c6fab10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:35:59,449 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-12-02 12:35:59,456 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 12:35:59,456 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-12-02 12:35:59,456 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:35:59,457 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:35:59,457 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:35:59,457 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:35:59,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:35:59,462 INFO L85 PathProgramCache]: Analyzing trace with hash -441241196, now seen corresponding path program 1 times [2024-12-02 12:35:59,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:35:59,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302899481] [2024-12-02 12:35:59,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:35:59,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:35:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:35:59,688 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 12:35:59,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:35:59,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302899481] [2024-12-02 12:35:59,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302899481] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:35:59,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:35:59,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:35:59,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055698633] [2024-12-02 12:35:59,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:35:59,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:35:59,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:35:59,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:35:59,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:35:59,724 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-12-02 12:35:59,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 12:35:59,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:35:59,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-12-02 12:35:59,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:35:59,813 INFO L124 PetriNetUnfolderBase]: 43/138 cut-off events. [2024-12-02 12:35:59,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:35:59,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 138 events. 43/138 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 529 event pairs, 42 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 230. Up to 102 conditions per place. [2024-12-02 12:35:59,816 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 16 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-12-02 12:35:59,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 97 flow [2024-12-02 12:35:59,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:35:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:35:59,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-12-02 12:35:59,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.632183908045977 [2024-12-02 12:35:59,829 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 59 flow. Second operand 3 states and 55 transitions. [2024-12-02 12:35:59,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 97 flow [2024-12-02 12:35:59,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:35:59,836 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 70 flow [2024-12-02 12:35:59,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-12-02 12:35:59,842 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2024-12-02 12:35:59,842 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 70 flow [2024-12-02 12:35:59,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 12:35:59,842 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:35:59,842 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:35:59,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:35:59,842 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:35:59,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:35:59,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2131750341, now seen corresponding path program 1 times [2024-12-02 12:35:59,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:35:59,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882246898] [2024-12-02 12:35:59,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:35:59,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:35:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:35:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:35:59,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:35:59,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882246898] [2024-12-02 12:35:59,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882246898] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:35:59,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351438864] [2024-12-02 12:35:59,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:35:59,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:35:59,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:35:59,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:35:59,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:36:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:00,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:36:00,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:36:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:00,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:36:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:00,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351438864] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:36:00,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:36:00,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-12-02 12:36:00,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706114941] [2024-12-02 12:36:00,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:36:00,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:36:00,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:00,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:36:00,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:36:00,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-12-02 12:36:00,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:00,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:36:00,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-12-02 12:36:00,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:36:00,200 INFO L124 PetriNetUnfolderBase]: 43/141 cut-off events. [2024-12-02 12:36:00,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:36:00,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 141 events. 43/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 529 event pairs, 42 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 249. Up to 102 conditions per place. [2024-12-02 12:36:00,202 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 16 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2024-12-02 12:36:00,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 124 flow [2024-12-02 12:36:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:36:00,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 12:36:00,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-12-02 12:36:00,204 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-12-02 12:36:00,204 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 70 flow. Second operand 6 states and 96 transitions. [2024-12-02 12:36:00,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 124 flow [2024-12-02 12:36:00,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 120 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 12:36:00,205 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 102 flow [2024-12-02 12:36:00,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-12-02 12:36:00,206 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-12-02 12:36:00,206 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 102 flow [2024-12-02 12:36:00,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:00,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:36:00,207 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:00,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:36:00,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-12-02 12:36:00,407 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:36:00,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1043964756, now seen corresponding path program 2 times [2024-12-02 12:36:00,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:00,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163325938] [2024-12-02 12:36:00,408 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:36:00,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:00,432 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:36:00,432 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:36:00,514 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 12:36:00,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:00,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163325938] [2024-12-02 12:36:00,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163325938] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:00,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:00,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 12:36:00,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790991807] [2024-12-02 12:36:00,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:00,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:36:00,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:00,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:36:00,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:00,533 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-12-02 12:36:00,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 12:36:00,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:36:00,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-12-02 12:36:00,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:36:00,601 INFO L124 PetriNetUnfolderBase]: 43/129 cut-off events. [2024-12-02 12:36:00,601 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 12:36:00,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 129 events. 43/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 430 event pairs, 42 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 228. Up to 105 conditions per place. [2024-12-02 12:36:00,602 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 20 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2024-12-02 12:36:00,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 136 flow [2024-12-02 12:36:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:36:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:36:00,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-12-02 12:36:00,604 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2024-12-02 12:36:00,604 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 102 flow. Second operand 3 states and 45 transitions. [2024-12-02 12:36:00,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 136 flow [2024-12-02 12:36:00,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 28 transitions, 122 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-12-02 12:36:00,605 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 82 flow [2024-12-02 12:36:00,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2024-12-02 12:36:00,606 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-12-02 12:36:00,606 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 82 flow [2024-12-02 12:36:00,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 12:36:00,607 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:36:00,607 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:00,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:36:00,607 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:36:00,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:00,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1043964757, now seen corresponding path program 1 times [2024-12-02 12:36:00,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:00,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557271335] [2024-12-02 12:36:00,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:00,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:00,728 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:00,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:00,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557271335] [2024-12-02 12:36:00,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557271335] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:36:00,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302546440] [2024-12-02 12:36:00,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:00,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:36:00,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:36:00,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:36:00,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:36:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:00,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 12:36:00,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:36:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:00,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:36:00,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:00,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302546440] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:36:00,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:36:00,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-12-02 12:36:00,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962151483] [2024-12-02 12:36:00,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:36:00,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:36:00,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:00,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:36:00,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:36:00,892 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-12-02 12:36:00,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 82 flow. Second operand has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:00,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:36:00,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-12-02 12:36:00,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:36:00,975 INFO L124 PetriNetUnfolderBase]: 43/135 cut-off events. [2024-12-02 12:36:00,976 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-12-02 12:36:00,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 135 events. 43/135 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 430 event pairs, 42 based on Foata normal form. 6/140 useless extension candidates. Maximal degree in co-relation 268. Up to 102 conditions per place. [2024-12-02 12:36:00,977 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 16 selfloop transitions, 11 changer transitions 0/34 dead transitions. [2024-12-02 12:36:00,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 34 transitions, 172 flow [2024-12-02 12:36:00,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:36:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 12:36:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-12-02 12:36:00,979 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2024-12-02 12:36:00,979 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 82 flow. Second operand 12 states and 177 transitions. [2024-12-02 12:36:00,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 34 transitions, 172 flow [2024-12-02 12:36:00,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 34 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:36:00,982 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 165 flow [2024-12-02 12:36:00,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=165, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2024-12-02 12:36:00,982 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-12-02 12:36:00,982 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 165 flow [2024-12-02 12:36:00,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:00,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:36:00,983 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:00,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 12:36:01,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:36:01,184 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:36:01,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:01,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1188719093, now seen corresponding path program 2 times [2024-12-02 12:36:01,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:01,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67280566] [2024-12-02 12:36:01,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:36:01,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:01,211 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:36:01,211 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:36:01,337 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 12:36:01,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:01,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67280566] [2024-12-02 12:36:01,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67280566] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:01,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:01,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:36:01,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385691901] [2024-12-02 12:36:01,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:01,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:36:01,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:01,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:36:01,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:36:01,366 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-12-02 12:36:01,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 12:36:01,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:36:01,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-12-02 12:36:01,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:36:01,457 INFO L124 PetriNetUnfolderBase]: 43/131 cut-off events. [2024-12-02 12:36:01,457 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-12-02 12:36:01,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 131 events. 43/131 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 395 event pairs, 36 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 287. Up to 86 conditions per place. [2024-12-02 12:36:01,458 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 3 changer transitions 3/38 dead transitions. [2024-12-02 12:36:01,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 38 transitions, 239 flow [2024-12-02 12:36:01,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:36:01,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:36:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-12-02 12:36:01,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5603448275862069 [2024-12-02 12:36:01,460 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 165 flow. Second operand 4 states and 65 transitions. [2024-12-02 12:36:01,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 38 transitions, 239 flow [2024-12-02 12:36:01,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 38 transitions, 191 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-12-02 12:36:01,464 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 119 flow [2024-12-02 12:36:01,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2024-12-02 12:36:01,465 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-12-02 12:36:01,465 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 119 flow [2024-12-02 12:36:01,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 12:36:01,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:36:01,465 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:01,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:36:01,465 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:36:01,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:01,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1189551503, now seen corresponding path program 1 times [2024-12-02 12:36:01,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:01,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133267044] [2024-12-02 12:36:01,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:01,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 12:36:01,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:01,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133267044] [2024-12-02 12:36:01,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133267044] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:01,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:01,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:36:01,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850470272] [2024-12-02 12:36:01,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:01,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:36:01,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:01,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:36:01,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:36:01,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-12-02 12:36:01,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 12:36:01,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:36:01,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-12-02 12:36:01,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:36:01,804 INFO L124 PetriNetUnfolderBase]: 43/121 cut-off events. [2024-12-02 12:36:01,804 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-12-02 12:36:01,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 121 events. 43/121 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 355 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 262. Up to 90 conditions per place. [2024-12-02 12:36:01,805 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 30 selfloop transitions, 2 changer transitions 2/37 dead transitions. [2024-12-02 12:36:01,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 37 transitions, 199 flow [2024-12-02 12:36:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:36:01,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:36:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-12-02 12:36:01,807 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-12-02 12:36:01,807 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 119 flow. Second operand 4 states and 66 transitions. [2024-12-02 12:36:01,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 37 transitions, 199 flow [2024-12-02 12:36:01,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 191 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:36:01,810 INFO L231 Difference]: Finished difference. Result has 47 places, 29 transitions, 111 flow [2024-12-02 12:36:01,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2024-12-02 12:36:01,811 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-12-02 12:36:01,811 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 111 flow [2024-12-02 12:36:01,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 12:36:01,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:36:01,811 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:01,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:36:01,812 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:36:01,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash 530243780, now seen corresponding path program 1 times [2024-12-02 12:36:01,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:01,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662476431] [2024-12-02 12:36:01,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:01,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 12:36:01,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:01,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662476431] [2024-12-02 12:36:01,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662476431] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:01,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:01,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 12:36:01,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426143739] [2024-12-02 12:36:01,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:01,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:36:01,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:01,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:36:01,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:01,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-12-02 12:36:01,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 29 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 12:36:01,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:36:01,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-12-02 12:36:01,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:36:01,934 INFO L124 PetriNetUnfolderBase]: 37/104 cut-off events. [2024-12-02 12:36:01,934 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-12-02 12:36:01,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 104 events. 37/104 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 255 event pairs, 36 based on Foata normal form. 7/110 useless extension candidates. Maximal degree in co-relation 231. Up to 98 conditions per place. [2024-12-02 12:36:01,935 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2024-12-02 12:36:01,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 28 transitions, 161 flow [2024-12-02 12:36:01,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:36:01,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:36:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-12-02 12:36:01,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-12-02 12:36:01,936 INFO L175 Difference]: Start difference. First operand has 47 places, 29 transitions, 111 flow. Second operand 3 states and 50 transitions. [2024-12-02 12:36:01,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 28 transitions, 161 flow [2024-12-02 12:36:01,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 28 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:36:01,938 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-12-02 12:36:01,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-12-02 12:36:01,939 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-12-02 12:36:01,939 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-12-02 12:36:01,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 12:36:01,942 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2024-12-02 12:36:01,942 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-12-02 12:36:01,942 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-12-02 12:36:01,942 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-12-02 12:36:01,942 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (9 of 14 remaining) [2024-12-02 12:36:01,942 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2024-12-02 12:36:01,943 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-12-02 12:36:01,943 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2024-12-02 12:36:01,943 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-12-02 12:36:01,943 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-12-02 12:36:01,943 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-12-02 12:36:01,943 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-12-02 12:36:01,943 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-12-02 12:36:01,943 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-12-02 12:36:01,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:36:01,944 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-12-02 12:36:01,949 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-12-02 12:36:01,949 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 12:36:01,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:36:01 BasicIcfg [2024-12-02 12:36:01,955 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 12:36:01,955 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 12:36:01,955 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 12:36:01,956 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 12:36:01,956 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:35:59" (3/4) ... [2024-12-02 12:36:01,958 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 12:36:01,961 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-12-02 12:36:01,964 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 88 nodes and edges [2024-12-02 12:36:01,965 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-12-02 12:36:01,965 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-02 12:36:02,039 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 12:36:02,039 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 12:36:02,039 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 12:36:02,040 INFO L158 Benchmark]: Toolchain (without parser) took 3999.35ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 115.6MB in the beginning and 165.4MB in the end (delta: -49.9MB). Peak memory consumption was 118.6MB. Max. memory is 16.1GB. [2024-12-02 12:36:02,040 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 142.6MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:36:02,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 480.27ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 85.7MB in the end (delta: 29.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-02 12:36:02,041 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.09ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 83.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:36:02,041 INFO L158 Benchmark]: Boogie Preprocessor took 39.75ms. Allocated memory is still 142.6MB. Free memory was 83.3MB in the beginning and 81.1MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:36:02,041 INFO L158 Benchmark]: RCFGBuilder took 695.73ms. Allocated memory is still 142.6MB. Free memory was 81.1MB in the beginning and 48.2MB in the end (delta: 32.9MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2024-12-02 12:36:02,042 INFO L158 Benchmark]: TraceAbstraction took 2657.18ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 47.6MB in the beginning and 170.3MB in the end (delta: -122.6MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. [2024-12-02 12:36:02,042 INFO L158 Benchmark]: Witness Printer took 83.82ms. Allocated memory is still 310.4MB. Free memory was 170.3MB in the beginning and 165.4MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:36:02,043 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 142.6MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 480.27ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 85.7MB in the end (delta: 29.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.09ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 83.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.75ms. Allocated memory is still 142.6MB. Free memory was 83.3MB in the beginning and 81.1MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 695.73ms. Allocated memory is still 142.6MB. Free memory was 81.1MB in the beginning and 48.2MB in the end (delta: 32.9MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2657.18ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 47.6MB in the beginning and 170.3MB in the end (delta: -122.6MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. * Witness Printer took 83.82ms. Allocated memory is still 310.4MB. Free memory was 170.3MB in the beginning and 165.4MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 935]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 42 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.6s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 112 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 299 IncrementalHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 5 mSDtfsCounter, 299 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=4, InterpolantAutomatonStates: 35, 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, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 111 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 365 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 175/208 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 12:36:02,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb309bc-f6ae-48ac-b1ed-50f7db88d686/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