./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd --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 b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:25:49,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:25:49,535 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 14:25:49,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:25:49,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:25:49,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:25:49,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:25:49,595 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:25:49,595 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:25:49,595 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:25:49,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:25:49,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:25:49,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:25:49,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:25:49,596 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:25:49,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:25:49,596 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:25:49,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:25:49,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:25:49,597 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:25:49,597 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:25:49,597 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:25:49,597 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:25:49,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:25:49,597 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:25:49,599 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:25:49,599 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:25:49,600 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:25:49,600 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:25:49,600 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:25:49,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:25:49,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:25:49,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:25:49,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:25:49,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:25:49,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:25:49,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:25:49,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:25:49,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:25:49,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:25:49,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:25:49,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:25:49,601 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_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd 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 -> b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 [2024-11-13 14:25:50,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:25:50,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:25:50,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:25:50,031 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:25:50,032 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:25:50,034 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c Unable to find full path for "g++" [2024-11-13 14:25:52,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:25:52,644 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:25:52,644 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-11-13 14:25:52,669 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/data/a9d1bada1/4717370eaaa344eab06e00fb101c4cd4/FLAGaee0b247a [2024-11-13 14:25:52,689 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/data/a9d1bada1/4717370eaaa344eab06e00fb101c4cd4 [2024-11-13 14:25:52,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:25:52,693 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:25:52,695 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:25:52,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:25:52,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:25:52,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:25:52" (1/1) ... [2024-11-13 14:25:52,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ddca63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:52, skipping insertion in model container [2024-11-13 14:25:52,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:25:52" (1/1) ... [2024-11-13 14:25:52,729 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:25:52,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:25:53,007 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:25:53,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:25:53,065 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:25:53,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:53 WrapperNode [2024-11-13 14:25:53,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:25:53,069 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:25:53,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:25:53,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:25:53,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:53" (1/1) ... [2024-11-13 14:25:53,088 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:53" (1/1) ... [2024-11-13 14:25:53,113 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2024-11-13 14:25:53,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:25:53,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:25:53,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:25:53,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:25:53,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:53" (1/1) ... [2024-11-13 14:25:53,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:53" (1/1) ... [2024-11-13 14:25:53,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:53" (1/1) ... [2024-11-13 14:25:53,160 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]. [2024-11-13 14:25:53,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:53" (1/1) ... [2024-11-13 14:25:53,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:53" (1/1) ... [2024-11-13 14:25:53,165 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:53" (1/1) ... [2024-11-13 14:25:53,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:53" (1/1) ... [2024-11-13 14:25:53,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:53" (1/1) ... [2024-11-13 14:25:53,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:53" (1/1) ... [2024-11-13 14:25:53,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:25:53,175 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:25:53,175 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:25:53,175 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:25:53,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:53" (1/1) ... [2024-11-13 14:25:53,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:25:53,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:53,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:25:53,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:25:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:25:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 14:25:53,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 14:25:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 14:25:53,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 14:25:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:25:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:25:53,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:25:53,268 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 14:25:53,400 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:25:53,405 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:25:53,674 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:25:53,674 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:25:53,850 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:25:53,850 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:25:53,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:25:53 BoogieIcfgContainer [2024-11-13 14:25:53,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:25:53,858 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:25:53,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:25:53,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:25:53,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:25:52" (1/3) ... [2024-11-13 14:25:53,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2537d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:25:53, skipping insertion in model container [2024-11-13 14:25:53,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:25:53" (2/3) ... [2024-11-13 14:25:53,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2537d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:25:53, skipping insertion in model container [2024-11-13 14:25:53,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:25:53" (3/3) ... [2024-11-13 14:25:53,872 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2024-11-13 14:25:53,891 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:25:53,893 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-3.wvr.c that has 3 procedures, 29 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-13 14:25:53,894 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:25:53,988 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 14:25:54,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 32 transitions, 78 flow [2024-11-13 14:25:54,100 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-13 14:25:54,106 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:25:54,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 4/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 64 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-13 14:25:54,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 32 transitions, 78 flow [2024-11-13 14:25:54,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 29 transitions, 70 flow [2024-11-13 14:25:54,133 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:25:54,148 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;@1fd1bb1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:25:54,148 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 14:25:54,172 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:25:54,173 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-11-13 14:25:54,173 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:25:54,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:25:54,174 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:54,174 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:25:54,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:54,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1757560154, now seen corresponding path program 1 times [2024-11-13 14:25:54,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:54,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825139179] [2024-11-13 14:25:54,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:54,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:54,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:54,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825139179] [2024-11-13 14:25:54,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825139179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:25:54,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:25:54,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:25:54,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526988648] [2024-11-13 14:25:54,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:25:54,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:25:54,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:54,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:25:54,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:25:54,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-13 14:25:54,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:54,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:25:54,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-13 14:25:54,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:25:54,782 INFO L124 PetriNetUnfolderBase]: 146/284 cut-off events. [2024-11-13 14:25:54,782 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-13 14:25:54,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 284 events. 146/284 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1128 event pairs, 12 based on Foata normal form. 2/251 useless extension candidates. Maximal degree in co-relation 458. Up to 185 conditions per place. [2024-11-13 14:25:54,788 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 21 selfloop transitions, 5 changer transitions 1/38 dead transitions. [2024-11-13 14:25:54,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 151 flow [2024-11-13 14:25:54,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:25:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:25:54,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-13 14:25:54,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-11-13 14:25:54,808 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 70 flow. Second operand 3 states and 71 transitions. [2024-11-13 14:25:54,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 151 flow [2024-11-13 14:25:54,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 38 transitions, 137 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 14:25:54,817 INFO L231 Difference]: Finished difference. Result has 29 places, 31 transitions, 91 flow [2024-11-13 14:25:54,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=29, PETRI_TRANSITIONS=31} [2024-11-13 14:25:54,826 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2024-11-13 14:25:54,826 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 31 transitions, 91 flow [2024-11-13 14:25:54,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:54,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:25:54,827 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:54,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:25:54,827 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:25:54,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:54,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1443812306, now seen corresponding path program 1 times [2024-11-13 14:25:54,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:54,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565490260] [2024-11-13 14:25:54,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:54,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:55,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:25:55,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:55,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565490260] [2024-11-13 14:25:55,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565490260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:25:55,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:25:55,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:25:55,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514070932] [2024-11-13 14:25:55,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:25:55,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:25:55,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:55,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:25:55,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:25:55,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 32 [2024-11-13 14:25:55,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 31 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:55,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:25:55,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 32 [2024-11-13 14:25:55,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:25:55,183 INFO L124 PetriNetUnfolderBase]: 129/272 cut-off events. [2024-11-13 14:25:55,184 INFO L125 PetriNetUnfolderBase]: For 48/60 co-relation queries the response was YES. [2024-11-13 14:25:55,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 272 events. 129/272 cut-off events. For 48/60 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1198 event pairs, 22 based on Foata normal form. 11/244 useless extension candidates. Maximal degree in co-relation 341. Up to 108 conditions per place. [2024-11-13 14:25:55,188 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 22 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-13 14:25:55,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 39 transitions, 160 flow [2024-11-13 14:25:55,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:25:55,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:25:55,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-13 14:25:55,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-11-13 14:25:55,190 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 91 flow. Second operand 3 states and 71 transitions. [2024-11-13 14:25:55,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 39 transitions, 160 flow [2024-11-13 14:25:55,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 39 transitions, 153 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 14:25:55,195 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 96 flow [2024-11-13 14:25:55,196 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2024-11-13 14:25:55,197 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2024-11-13 14:25:55,197 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 96 flow [2024-11-13 14:25:55,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:55,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:25:55,197 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:55,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:25:55,198 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:25:55,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:55,199 INFO L85 PathProgramCache]: Analyzing trace with hash 240662508, now seen corresponding path program 1 times [2024-11-13 14:25:55,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:55,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719438968] [2024-11-13 14:25:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:55,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:55,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:55,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719438968] [2024-11-13 14:25:55,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719438968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:25:55,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:25:55,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:25:55,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183397934] [2024-11-13 14:25:55,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:25:55,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:25:55,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:55,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:25:55,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:25:55,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 32 [2024-11-13 14:25:55,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 96 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) [2024-11-13 14:25:55,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:25:55,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 32 [2024-11-13 14:25:55,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:25:55,491 INFO L124 PetriNetUnfolderBase]: 128/302 cut-off events. [2024-11-13 14:25:55,492 INFO L125 PetriNetUnfolderBase]: For 77/83 co-relation queries the response was YES. [2024-11-13 14:25:55,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 302 events. 128/302 cut-off events. For 77/83 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1482 event pairs, 22 based on Foata normal form. 9/262 useless extension candidates. Maximal degree in co-relation 330. Up to 107 conditions per place. [2024-11-13 14:25:55,496 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 23 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2024-11-13 14:25:55,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 174 flow [2024-11-13 14:25:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:25:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:25:55,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-13 14:25:55,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-11-13 14:25:55,498 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 96 flow. Second operand 3 states and 70 transitions. [2024-11-13 14:25:55,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 174 flow [2024-11-13 14:25:55,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:25:55,501 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 106 flow [2024-11-13 14:25:55,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2024-11-13 14:25:55,503 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-11-13 14:25:55,503 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 106 flow [2024-11-13 14:25:55,503 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) [2024-11-13 14:25:55,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:25:55,503 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:55,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:25:55,504 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:25:55,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:55,504 INFO L85 PathProgramCache]: Analyzing trace with hash -168404778, now seen corresponding path program 1 times [2024-11-13 14:25:55,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:55,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019646957] [2024-11-13 14:25:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:55,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:25:55,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:55,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019646957] [2024-11-13 14:25:55,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019646957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:25:55,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:25:55,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:25:55,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551925106] [2024-11-13 14:25:55,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:25:55,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:25:55,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:55,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:25:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:25:55,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-13 14:25:55,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:55,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:25:55,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-13 14:25:55,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:25:56,174 INFO L124 PetriNetUnfolderBase]: 218/428 cut-off events. [2024-11-13 14:25:56,175 INFO L125 PetriNetUnfolderBase]: For 135/163 co-relation queries the response was YES. [2024-11-13 14:25:56,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 428 events. 218/428 cut-off events. For 135/163 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1788 event pairs, 50 based on Foata normal form. 16/393 useless extension candidates. Maximal degree in co-relation 379. Up to 139 conditions per place. [2024-11-13 14:25:56,181 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 33 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2024-11-13 14:25:56,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 240 flow [2024-11-13 14:25:56,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:25:56,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:25:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-13 14:25:56,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7109375 [2024-11-13 14:25:56,186 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 106 flow. Second operand 4 states and 91 transitions. [2024-11-13 14:25:56,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 240 flow [2024-11-13 14:25:56,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:25:56,191 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 136 flow [2024-11-13 14:25:56,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-11-13 14:25:56,192 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2024-11-13 14:25:56,193 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 136 flow [2024-11-13 14:25:56,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:56,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:25:56,196 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:56,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:25:56,197 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:25:56,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:56,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1653984849, now seen corresponding path program 1 times [2024-11-13 14:25:56,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:56,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974567547] [2024-11-13 14:25:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:56,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:25:56,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:56,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974567547] [2024-11-13 14:25:56,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974567547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:25:56,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:25:56,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:25:56,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477121295] [2024-11-13 14:25:56,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:25:56,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:25:56,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:56,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:25:56,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:25:56,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-13 14:25:56,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:56,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:25:56,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-13 14:25:56,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:25:56,776 INFO L124 PetriNetUnfolderBase]: 392/744 cut-off events. [2024-11-13 14:25:56,780 INFO L125 PetriNetUnfolderBase]: For 772/806 co-relation queries the response was YES. [2024-11-13 14:25:56,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 744 events. 392/744 cut-off events. For 772/806 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4002 event pairs, 93 based on Foata normal form. 36/691 useless extension candidates. Maximal degree in co-relation 1034. Up to 228 conditions per place. [2024-11-13 14:25:56,790 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-11-13 14:25:56,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 330 flow [2024-11-13 14:25:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:25:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:25:56,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-13 14:25:56,794 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7109375 [2024-11-13 14:25:56,794 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 136 flow. Second operand 4 states and 91 transitions. [2024-11-13 14:25:56,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 330 flow [2024-11-13 14:25:56,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 324 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-13 14:25:56,800 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 166 flow [2024-11-13 14:25:56,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-13 14:25:56,802 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-11-13 14:25:56,802 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 166 flow [2024-11-13 14:25:56,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:56,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:25:56,803 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:56,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:25:56,804 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:25:56,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:56,805 INFO L85 PathProgramCache]: Analyzing trace with hash -847485301, now seen corresponding path program 1 times [2024-11-13 14:25:56,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:56,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182164396] [2024-11-13 14:25:56,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:56,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:25:57,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:57,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182164396] [2024-11-13 14:25:57,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182164396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:57,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402552201] [2024-11-13 14:25:57,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:57,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:57,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:57,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:57,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:25:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:57,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 14:25:57,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:25:57,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:25:57,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402552201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:57,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:57,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-13 14:25:57,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323978572] [2024-11-13 14:25:57,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:57,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:25:57,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:57,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:25:57,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:25:57,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-13 14:25:57,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:57,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:25:57,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-13 14:25:57,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:25:58,065 INFO L124 PetriNetUnfolderBase]: 956/1991 cut-off events. [2024-11-13 14:25:58,066 INFO L125 PetriNetUnfolderBase]: For 2306/2413 co-relation queries the response was YES. [2024-11-13 14:25:58,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5758 conditions, 1991 events. 956/1991 cut-off events. For 2306/2413 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11863 event pairs, 145 based on Foata normal form. 40/1993 useless extension candidates. Maximal degree in co-relation 1528. Up to 658 conditions per place. [2024-11-13 14:25:58,089 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 65 selfloop transitions, 15 changer transitions 1/94 dead transitions. [2024-11-13 14:25:58,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 94 transitions, 607 flow [2024-11-13 14:25:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:25:58,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:25:58,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-13 14:25:58,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8 [2024-11-13 14:25:58,093 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 166 flow. Second operand 5 states and 128 transitions. [2024-11-13 14:25:58,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 94 transitions, 607 flow [2024-11-13 14:25:58,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 94 transitions, 599 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-13 14:25:58,099 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 261 flow [2024-11-13 14:25:58,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2024-11-13 14:25:58,100 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2024-11-13 14:25:58,100 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 261 flow [2024-11-13 14:25:58,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:58,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:25:58,101 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:58,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:25:58,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:58,306 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:25:58,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:58,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1892236575, now seen corresponding path program 2 times [2024-11-13 14:25:58,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:58,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123760526] [2024-11-13 14:25:58,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:58,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:25:58,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:58,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123760526] [2024-11-13 14:25:58,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123760526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:58,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113313458] [2024-11-13 14:25:58,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:25:58,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:58,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:58,595 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:58,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:25:58,712 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:25:58,713 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:25:58,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 14:25:58,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:58,813 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:25:58,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:25:58,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113313458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:58,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:58,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-13 14:25:58,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319777114] [2024-11-13 14:25:58,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:58,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:25:58,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:58,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:25:58,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:25:58,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-13 14:25:58,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:58,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:25:58,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-13 14:25:58,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:25:59,824 INFO L124 PetriNetUnfolderBase]: 1767/3692 cut-off events. [2024-11-13 14:25:59,825 INFO L125 PetriNetUnfolderBase]: For 5885/6121 co-relation queries the response was YES. [2024-11-13 14:25:59,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11654 conditions, 3692 events. 1767/3692 cut-off events. For 5885/6121 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 26093 event pairs, 177 based on Foata normal form. 94/3717 useless extension candidates. Maximal degree in co-relation 3701. Up to 1033 conditions per place. [2024-11-13 14:25:59,866 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 81 selfloop transitions, 31 changer transitions 1/126 dead transitions. [2024-11-13 14:25:59,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 126 transitions, 895 flow [2024-11-13 14:25:59,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:25:59,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:25:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-11-13 14:25:59,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8125 [2024-11-13 14:25:59,868 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 261 flow. Second operand 6 states and 156 transitions. [2024-11-13 14:25:59,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 126 transitions, 895 flow [2024-11-13 14:25:59,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 126 transitions, 839 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-11-13 14:25:59,880 INFO L231 Difference]: Finished difference. Result has 53 places, 65 transitions, 388 flow [2024-11-13 14:25:59,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=388, PETRI_PLACES=53, PETRI_TRANSITIONS=65} [2024-11-13 14:25:59,882 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2024-11-13 14:25:59,882 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 65 transitions, 388 flow [2024-11-13 14:25:59,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:59,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:25:59,884 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:59,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:26:00,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:00,085 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:26:00,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:00,085 INFO L85 PathProgramCache]: Analyzing trace with hash 546600517, now seen corresponding path program 3 times [2024-11-13 14:26:00,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:00,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265151945] [2024-11-13 14:26:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:00,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:26:00,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:00,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265151945] [2024-11-13 14:26:00,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265151945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:00,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333121244] [2024-11-13 14:26:00,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:26:00,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:00,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:00,729 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:00,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:26:00,853 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 14:26:00,854 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:26:00,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:26:00,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:00,957 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:26:00,958 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:26:00,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333121244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:00,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:26:00,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-13 14:26:00,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505374992] [2024-11-13 14:26:00,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:00,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:26:00,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:00,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:26:00,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:26:00,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-13 14:26:00,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 65 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:00,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:26:00,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-13 14:26:00,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:26:02,133 INFO L124 PetriNetUnfolderBase]: 3183/5784 cut-off events. [2024-11-13 14:26:02,133 INFO L125 PetriNetUnfolderBase]: For 10475/10757 co-relation queries the response was YES. [2024-11-13 14:26:02,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18837 conditions, 5784 events. 3183/5784 cut-off events. For 10475/10757 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 40721 event pairs, 740 based on Foata normal form. 194/5863 useless extension candidates. Maximal degree in co-relation 7266. Up to 2151 conditions per place. [2024-11-13 14:26:02,191 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 80 selfloop transitions, 9 changer transitions 0/115 dead transitions. [2024-11-13 14:26:02,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 115 transitions, 874 flow [2024-11-13 14:26:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:26:02,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:26:02,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-13 14:26:02,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.671875 [2024-11-13 14:26:02,193 INFO L175 Difference]: Start difference. First operand has 53 places, 65 transitions, 388 flow. Second operand 4 states and 86 transitions. [2024-11-13 14:26:02,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 115 transitions, 874 flow [2024-11-13 14:26:02,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 115 transitions, 825 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-11-13 14:26:02,210 INFO L231 Difference]: Finished difference. Result has 57 places, 68 transitions, 409 flow [2024-11-13 14:26:02,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=57, PETRI_TRANSITIONS=68} [2024-11-13 14:26:02,211 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2024-11-13 14:26:02,212 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 68 transitions, 409 flow [2024-11-13 14:26:02,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:02,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:02,212 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:02,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 14:26:02,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:02,419 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:26:02,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:02,420 INFO L85 PathProgramCache]: Analyzing trace with hash 988607417, now seen corresponding path program 4 times [2024-11-13 14:26:02,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:02,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911504601] [2024-11-13 14:26:02,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:02,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:26:02,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:02,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911504601] [2024-11-13 14:26:02,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911504601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:02,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:02,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:26:02,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074004026] [2024-11-13 14:26:02,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:02,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:26:02,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:02,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:26:02,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:26:02,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-13 14:26:02,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 68 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:02,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:26:02,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-13 14:26:02,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:26:03,452 INFO L124 PetriNetUnfolderBase]: 1938/4022 cut-off events. [2024-11-13 14:26:03,452 INFO L125 PetriNetUnfolderBase]: For 10867/11070 co-relation queries the response was YES. [2024-11-13 14:26:03,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13454 conditions, 4022 events. 1938/4022 cut-off events. For 10867/11070 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 29745 event pairs, 651 based on Foata normal form. 373/4166 useless extension candidates. Maximal degree in co-relation 5768. Up to 1795 conditions per place. [2024-11-13 14:26:03,499 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 56 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2024-11-13 14:26:03,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 647 flow [2024-11-13 14:26:03,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:26:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:26:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-11-13 14:26:03,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6328125 [2024-11-13 14:26:03,503 INFO L175 Difference]: Start difference. First operand has 57 places, 68 transitions, 409 flow. Second operand 4 states and 81 transitions. [2024-11-13 14:26:03,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 647 flow [2024-11-13 14:26:03,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 639 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-13 14:26:03,518 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 404 flow [2024-11-13 14:26:03,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=404, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2024-11-13 14:26:03,521 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2024-11-13 14:26:03,522 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 404 flow [2024-11-13 14:26:03,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:03,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:03,523 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:03,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:26:03,523 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:26:03,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:03,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1354448885, now seen corresponding path program 5 times [2024-11-13 14:26:03,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:03,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801222168] [2024-11-13 14:26:03,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:03,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:04,230 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:26:04,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:04,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801222168] [2024-11-13 14:26:04,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801222168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:04,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201227995] [2024-11-13 14:26:04,233 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:26:04,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:04,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:04,236 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:04,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:26:04,352 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 14:26:04,353 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:26:04,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:26:04,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:26:04,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:26:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 14:26:05,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201227995] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:05,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:26:05,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 6] total 13 [2024-11-13 14:26:05,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017409938] [2024-11-13 14:26:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:05,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:26:05,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:05,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:26:05,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:26:05,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-13 14:26:05,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 404 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:05,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:26:05,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-13 14:26:05,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:26:06,256 INFO L124 PetriNetUnfolderBase]: 2265/4447 cut-off events. [2024-11-13 14:26:06,257 INFO L125 PetriNetUnfolderBase]: For 17337/17751 co-relation queries the response was YES. [2024-11-13 14:26:06,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16548 conditions, 4447 events. 2265/4447 cut-off events. For 17337/17751 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 29438 event pairs, 435 based on Foata normal form. 127/4508 useless extension candidates. Maximal degree in co-relation 6766. Up to 1942 conditions per place. [2024-11-13 14:26:06,296 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 50 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2024-11-13 14:26:06,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 666 flow [2024-11-13 14:26:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:26:06,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:26:06,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-13 14:26:06,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-13 14:26:06,299 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 404 flow. Second operand 4 states and 84 transitions. [2024-11-13 14:26:06,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 666 flow [2024-11-13 14:26:06,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 638 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-13 14:26:06,317 INFO L231 Difference]: Finished difference. Result has 62 places, 69 transitions, 438 flow [2024-11-13 14:26:06,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=438, PETRI_PLACES=62, PETRI_TRANSITIONS=69} [2024-11-13 14:26:06,318 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2024-11-13 14:26:06,319 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 69 transitions, 438 flow [2024-11-13 14:26:06,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:06,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:06,320 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:06,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:26:06,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:06,522 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:26:06,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:06,523 INFO L85 PathProgramCache]: Analyzing trace with hash 520967345, now seen corresponding path program 6 times [2024-11-13 14:26:06,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:06,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434396305] [2024-11-13 14:26:06,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:06,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:26:06,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:06,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434396305] [2024-11-13 14:26:06,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434396305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:06,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:06,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:26:06,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194950326] [2024-11-13 14:26:06,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:06,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:26:06,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:06,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:26:06,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:26:06,699 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-13 14:26:06,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 69 transitions, 438 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:06,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:26:06,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-13 14:26:06,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:26:06,911 INFO L124 PetriNetUnfolderBase]: 426/974 cut-off events. [2024-11-13 14:26:06,911 INFO L125 PetriNetUnfolderBase]: For 4375/4482 co-relation queries the response was YES. [2024-11-13 14:26:06,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3809 conditions, 974 events. 426/974 cut-off events. For 4375/4482 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5426 event pairs, 132 based on Foata normal form. 83/1024 useless extension candidates. Maximal degree in co-relation 1567. Up to 380 conditions per place. [2024-11-13 14:26:06,916 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2024-11-13 14:26:06,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 438 flow [2024-11-13 14:26:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:26:06,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:26:06,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-13 14:26:06,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-11-13 14:26:06,918 INFO L175 Difference]: Start difference. First operand has 62 places, 69 transitions, 438 flow. Second operand 4 states and 79 transitions. [2024-11-13 14:26:06,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 438 flow [2024-11-13 14:26:06,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 418 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-13 14:26:06,926 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2024-11-13 14:26:06,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2024-11-13 14:26:06,927 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2024-11-13 14:26:06,928 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2024-11-13 14:26:06,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:06,932 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-13 14:26:06,933 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-13 14:26:06,933 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-13 14:26:06,933 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-13 14:26:06,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:26:06,934 INFO L407 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1] [2024-11-13 14:26:06,939 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 14:26:06,939 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:26:06,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:26:06 BasicIcfg [2024-11-13 14:26:06,950 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:26:06,951 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:26:06,951 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:26:06,951 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:26:06,952 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:25:53" (3/4) ... [2024-11-13 14:26:06,956 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 14:26:06,961 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-13 14:26:06,961 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-13 14:26:06,969 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2024-11-13 14:26:06,970 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-13 14:26:06,971 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-13 14:26:06,971 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 14:26:07,078 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 14:26:07,079 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 14:26:07,079 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:26:07,080 INFO L158 Benchmark]: Toolchain (without parser) took 14387.17ms. Allocated memory was 117.4MB in the beginning and 453.0MB in the end (delta: 335.5MB). Free memory was 93.1MB in the beginning and 136.9MB in the end (delta: -43.8MB). Peak memory consumption was 287.1MB. Max. memory is 16.1GB. [2024-11-13 14:26:07,081 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 117.4MB. Free memory was 74.4MB in the beginning and 74.2MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:26:07,082 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.83ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 81.7MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:26:07,083 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.06ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:26:07,084 INFO L158 Benchmark]: Boogie Preprocessor took 60.38ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 79.1MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:26:07,084 INFO L158 Benchmark]: RCFGBuilder took 680.40ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 58.8MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:26:07,085 INFO L158 Benchmark]: TraceAbstraction took 13091.98ms. Allocated memory was 117.4MB in the beginning and 453.0MB in the end (delta: 335.5MB). Free memory was 58.3MB in the beginning and 141.1MB in the end (delta: -82.9MB). Peak memory consumption was 253.5MB. Max. memory is 16.1GB. [2024-11-13 14:26:07,086 INFO L158 Benchmark]: Witness Printer took 128.32ms. Allocated memory is still 453.0MB. Free memory was 141.1MB in the beginning and 136.9MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:26:07,088 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 117.4MB. Free memory was 74.4MB in the beginning and 74.2MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 371.83ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 81.7MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.06ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.38ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 79.1MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 680.40ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 58.8MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 13091.98ms. Allocated memory was 117.4MB in the beginning and 453.0MB in the end (delta: 335.5MB). Free memory was 58.3MB in the beginning and 141.1MB in the end (delta: -82.9MB). Peak memory consumption was 253.5MB. Max. memory is 16.1GB. * Witness Printer took 128.32ms. Allocated memory is still 453.0MB. Free memory was 141.1MB in the beginning and 136.9MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 75]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 4 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: 12.9s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 192 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 172 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 709 IncrementalHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 9 mSDtfsCounter, 709 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=438occurred in iteration=10, InterpolantAutomatonStates: 44, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 434 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 514 ConstructedInterpolants, 0 QuantifiedInterpolants, 1828 SizeOfPredicates, 9 NumberOfNonLiveVariables, 488 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 124/200 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 14:26:07,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b46b2fa-ef71-4198-bc29-c560065879cc/bin/uautomizer-verify-qhAvR1uOyd/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