./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 462fb42b593b74362524fb8209dde3f76380a79de0c48b612eb75bd0eda8df1c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:19:03,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:19:03,969 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 10:19:03,973 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:19:03,973 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:19:03,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:19:03,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:19:03,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:19:03,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:19:03,998 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:19:03,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:19:03,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:19:03,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:19:03,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:19:03,998 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:19:03,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:19:03,999 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:19:03,999 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:19:03,999 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:19:03,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:19:03,999 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 10:19:03,999 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 10:19:04,000 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 10:19:04,000 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:19:04,000 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 10:19:04,000 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 10:19:04,000 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:19:04,000 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:19:04,000 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:19:04,000 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:19:04,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:19:04,001 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:19:04,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:19:04,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:19:04,001 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:19:04,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:19:04,001 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:19:04,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:19:04,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:19:04,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:19:04,002 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:19:04,002 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:19:04,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:19:04,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:19:04,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:19:04,002 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:19:04,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:19:04,002 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_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 462fb42b593b74362524fb8209dde3f76380a79de0c48b612eb75bd0eda8df1c [2024-12-02 10:19:04,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:19:04,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:19:04,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:19:04,244 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:19:04,244 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:19:04,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2024-12-02 10:19:07,079 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/data/0fe58906a/647bf5ca3d724039ba3a197efc959aae/FLAGa5100c383 [2024-12-02 10:19:07,289 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:19:07,290 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2024-12-02 10:19:07,298 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/data/0fe58906a/647bf5ca3d724039ba3a197efc959aae/FLAGa5100c383 [2024-12-02 10:19:07,313 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/data/0fe58906a/647bf5ca3d724039ba3a197efc959aae [2024-12-02 10:19:07,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:19:07,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:19:07,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:19:07,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:19:07,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:19:07,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef70c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07, skipping insertion in model container [2024-12-02 10:19:07,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,341 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:19:07,516 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 10:19:07,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:19:07,531 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:19:07,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:19:07,581 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:19:07,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07 WrapperNode [2024-12-02 10:19:07,582 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:19:07,582 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:19:07,582 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:19:07,582 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:19:07,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,629 INFO L138 Inliner]: procedures = 28, calls = 66, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 296 [2024-12-02 10:19:07,629 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:19:07,630 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:19:07,630 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:19:07,630 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:19:07,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,645 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,667 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-12-02 10:19:07,667 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,667 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,679 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,681 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,687 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,690 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,694 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:19:07,695 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:19:07,695 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:19:07,695 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:19:07,697 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07" (1/1) ... [2024-12-02 10:19:07,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:19:07,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:19:07,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:19:07,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:19:07,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:19:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 10:19:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 10:19:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 10:19:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 10:19:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 10:19:07,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 10:19:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 10:19:07,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 10:19:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 10:19:07,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 10:19:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 10:19:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 10:19:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:19:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 10:19:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-12-02 10:19:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-12-02 10:19:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-12-02 10:19:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-12-02 10:19:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 10:19:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 10:19:07,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 10:19:07,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:19:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:19:07,760 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 10:19:07,907 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:19:07,909 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:19:08,416 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 10:19:08,416 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:19:08,719 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:19:08,719 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-12-02 10:19:08,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:19:08 BoogieIcfgContainer [2024-12-02 10:19:08,719 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:19:08,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:19:08,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:19:08,725 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:19:08,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:19:07" (1/3) ... [2024-12-02 10:19:08,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cc302e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:19:08, skipping insertion in model container [2024-12-02 10:19:08,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:07" (2/3) ... [2024-12-02 10:19:08,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cc302e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:19:08, skipping insertion in model container [2024-12-02 10:19:08,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:19:08" (3/3) ... [2024-12-02 10:19:08,727 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2024-12-02 10:19:08,741 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:19:08,742 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-1-dsl.wvr.c that has 7 procedures, 79 locations, 1 initial locations, 5 loop locations, and 12 error locations. [2024-12-02 10:19:08,742 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 10:19:08,868 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-12-02 10:19:08,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 97 transitions, 260 flow [2024-12-02 10:19:08,955 INFO L124 PetriNetUnfolderBase]: 13/85 cut-off events. [2024-12-02 10:19:08,958 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-02 10:19:08,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 85 events. 13/85 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 246 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 89. Up to 3 conditions per place. [2024-12-02 10:19:08,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 97 transitions, 260 flow [2024-12-02 10:19:08,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 84 transitions, 216 flow [2024-12-02 10:19:08,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:19:08,988 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;@de2e290, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:19:08,988 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-12-02 10:19:08,993 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 10:19:08,993 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-12-02 10:19:08,993 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 10:19:08,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:19:08,994 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 10:19:08,994 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-12-02 10:19:08,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:09,000 INFO L85 PathProgramCache]: Analyzing trace with hash 986338, now seen corresponding path program 1 times [2024-12-02 10:19:09,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:09,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103229585] [2024-12-02 10:19:09,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:09,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:19:09,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:09,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103229585] [2024-12-02 10:19:09,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103229585] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:09,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:09,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:19:09,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002051194] [2024-12-02 10:19:09,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:09,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:19:09,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:09,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:19:09,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:19:09,323 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 101 [2024-12-02 10:19:09,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:19:09,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:19:09,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 101 [2024-12-02 10:19:09,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:19:45,360 INFO L124 PetriNetUnfolderBase]: 489852/601959 cut-off events. [2024-12-02 10:19:45,361 INFO L125 PetriNetUnfolderBase]: For 38485/38485 co-relation queries the response was YES. [2024-12-02 10:19:46,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246073 conditions, 601959 events. 489852/601959 cut-off events. For 38485/38485 co-relation queries the response was YES. Maximal size of possible extension queue 15433. Compared 3385424 event pairs, 438713 based on Foata normal form. 1/469311 useless extension candidates. Maximal degree in co-relation 1244140. Up to 601791 conditions per place. [2024-12-02 10:19:48,604 INFO L140 encePairwiseOnDemand]: 93/101 looper letters, 69 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-12-02 10:19:48,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 77 transitions, 344 flow [2024-12-02 10:19:48,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:19:48,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:19:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-12-02 10:19:48,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38283828382838286 [2024-12-02 10:19:48,619 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 216 flow. Second operand 3 states and 116 transitions. [2024-12-02 10:19:48,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 77 transitions, 344 flow [2024-12-02 10:19:51,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 77 transitions, 312 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-12-02 10:19:51,587 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 174 flow [2024-12-02 10:19:51,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2024-12-02 10:19:51,591 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, -13 predicate places. [2024-12-02 10:19:51,592 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 174 flow [2024-12-02 10:19:51,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:19:51,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:19:51,592 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 10:19:51,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:19:51,592 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-12-02 10:19:51,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:51,593 INFO L85 PathProgramCache]: Analyzing trace with hash 986339, now seen corresponding path program 1 times [2024-12-02 10:19:51,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:51,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313478915] [2024-12-02 10:19:51,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:51,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:51,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:19:51,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:51,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313478915] [2024-12-02 10:19:51,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313478915] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:51,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:51,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:19:51,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237402194] [2024-12-02 10:19:51,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:51,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:19:51,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:51,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:19:51,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:19:51,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 101 [2024-12-02 10:19:51,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:19:51,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:19:51,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 101 [2024-12-02 10:19:51,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:20:21,419 INFO L124 PetriNetUnfolderBase]: 489853/601962 cut-off events. [2024-12-02 10:20:21,419 INFO L125 PetriNetUnfolderBase]: For 8649/8649 co-relation queries the response was YES. [2024-12-02 10:20:22,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214386 conditions, 601962 events. 489853/601962 cut-off events. For 8649/8649 co-relation queries the response was YES. Maximal size of possible extension queue 15433. Compared 3385870 event pairs, 438713 based on Foata normal form. 0/469313 useless extension candidates. Maximal degree in co-relation 1214364. Up to 601796 conditions per place. [2024-12-02 10:20:24,007 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 71 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2024-12-02 10:20:24,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 332 flow [2024-12-02 10:20:24,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:20:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:20:24,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-12-02 10:20:24,008 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31683168316831684 [2024-12-02 10:20:24,008 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 174 flow. Second operand 4 states and 128 transitions. [2024-12-02 10:20:24,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 332 flow [2024-12-02 10:20:24,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 80 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:20:24,013 INFO L231 Difference]: Finished difference. Result has 80 places, 80 transitions, 197 flow [2024-12-02 10:20:24,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=80, PETRI_TRANSITIONS=80} [2024-12-02 10:20:24,014 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, -10 predicate places. [2024-12-02 10:20:24,014 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 80 transitions, 197 flow [2024-12-02 10:20:24,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:20:24,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:20:24,015 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-12-02 10:20:24,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:20:24,015 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-12-02 10:20:24,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash 947902884, now seen corresponding path program 1 times [2024-12-02 10:20:24,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:24,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110230059] [2024-12-02 10:20:24,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:24,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:24,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:20:24,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:24,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110230059] [2024-12-02 10:20:24,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110230059] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:24,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469181675] [2024-12-02 10:20:24,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:24,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:24,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:24,327 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:24,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a8150-61d3-4c50-86e3-421e942b4d96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:20:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:24,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 10:20:24,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:24,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-12-02 10:20:24,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:20:24,707 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:20:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:20:24,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469181675] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:20:24,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:20:24,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-12-02 10:20:24,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118427786] [2024-12-02 10:20:24,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:20:24,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 10:20:24,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:24,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 10:20:24,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:20:24,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 101 [2024-12-02 10:20:24,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 197 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:20:24,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:20:24,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 101 [2024-12-02 10:20:24,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand