./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.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_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/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_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/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_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/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 dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:38:19,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:38:19,689 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 12:38:19,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:38:19,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:38:19,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:38:19,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:38:19,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:38:19,716 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:38:19,716 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:38:19,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:38:19,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:38:19,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:38:19,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:38:19,717 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:38:19,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:38:19,717 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:38:19,717 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:38:19,717 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:38:19,717 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:38:19,717 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 12:38:19,718 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 12:38:19,718 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 12:38:19,718 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:38:19,718 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 12:38:19,718 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:38:19,718 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:38:19,718 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:38:19,718 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:38:19,718 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:38:19,718 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:38:19,718 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:38:19,718 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:38:19,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:38:19,719 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:38:19,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:38:19,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:38:19,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:38:19,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:38:19,719 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:38:19,719 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:38:19,719 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:38:19,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:38:19,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:38:19,719 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:38:19,719 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:38:19,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:38:19,720 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_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/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 -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2024-12-02 12:38:19,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:38:19,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:38:19,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:38:19,958 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:38:19,958 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:38:19,960 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2024-12-02 12:38:22,634 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/data/e955ad502/12976ca223c34aaebcbbe3c11fd6c296/FLAGcfb45fd84 [2024-12-02 12:38:22,803 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:38:22,804 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2024-12-02 12:38:22,812 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/data/e955ad502/12976ca223c34aaebcbbe3c11fd6c296/FLAGcfb45fd84 [2024-12-02 12:38:22,826 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/data/e955ad502/12976ca223c34aaebcbbe3c11fd6c296 [2024-12-02 12:38:22,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:38:22,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:38:22,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:38:22,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:38:22,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:38:22,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:38:22" (1/1) ... [2024-12-02 12:38:22,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d24fcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:22, skipping insertion in model container [2024-12-02 12:38:22,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:38:22" (1/1) ... [2024-12-02 12:38:22,852 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:38:23,013 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 12:38:23,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:38:23,024 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:38:23,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:38:23,061 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:38:23,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23 WrapperNode [2024-12-02 12:38:23,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:38:23,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:38:23,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:38:23,063 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:38:23,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23" (1/1) ... [2024-12-02 12:38:23,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23" (1/1) ... [2024-12-02 12:38:23,092 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2024-12-02 12:38:23,093 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:38:23,094 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:38:23,094 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:38:23,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:38:23,101 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23" (1/1) ... [2024-12-02 12:38:23,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23" (1/1) ... [2024-12-02 12:38:23,103 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23" (1/1) ... [2024-12-02 12:38:23,117 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 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 12:38:23,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23" (1/1) ... [2024-12-02 12:38:23,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23" (1/1) ... [2024-12-02 12:38:23,123 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23" (1/1) ... [2024-12-02 12:38:23,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23" (1/1) ... [2024-12-02 12:38:23,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23" (1/1) ... [2024-12-02 12:38:23,128 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23" (1/1) ... [2024-12-02 12:38:23,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23" (1/1) ... [2024-12-02 12:38:23,131 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:38:23,132 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:38:23,132 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:38:23,132 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:38:23,133 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23" (1/1) ... [2024-12-02 12:38:23,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:38:23,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:38:23,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:38:23,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:38:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:38:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 12:38:23,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 12:38:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 12:38:23,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 12:38:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 12:38:23,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 12:38:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:38:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 12:38:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 12:38:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 12:38:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 12:38:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 12:38:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 12:38:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:38:23,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:38:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 12:38:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 12:38:23,189 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 12:38:23,277 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:38:23,278 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:38:23,522 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 12:38:23,522 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:38:23,699 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:38:23,699 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 12:38:23,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:38:23 BoogieIcfgContainer [2024-12-02 12:38:23,700 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:38:23,702 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:38:23,702 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:38:23,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:38:23,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:38:22" (1/3) ... [2024-12-02 12:38:23,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30195a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:38:23, skipping insertion in model container [2024-12-02 12:38:23,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:23" (2/3) ... [2024-12-02 12:38:23,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30195a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:38:23, skipping insertion in model container [2024-12-02 12:38:23,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:38:23" (3/3) ... [2024-12-02 12:38:23,708 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2024-12-02 12:38:23,718 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:38:23,719 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-min-le-max.wvr.c that has 4 procedures, 48 locations, 1 initial locations, 3 loop locations, and 16 error locations. [2024-12-02 12:38:23,720 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 12:38:23,767 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 12:38:23,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 50 transitions, 121 flow [2024-12-02 12:38:23,833 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2024-12-02 12:38:23,836 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-12-02 12:38:23,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 3/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 99 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-12-02 12:38:23,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 50 transitions, 121 flow [2024-12-02 12:38:23,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 46 transitions, 110 flow [2024-12-02 12:38:23,848 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:38:23,859 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;@7a82a4da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:38:23,859 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-12-02 12:38:23,862 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 12:38:23,862 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-12-02 12:38:23,862 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:38:23,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:38:23,863 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 12:38:23,863 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-12-02 12:38:23,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:38:23,867 INFO L85 PathProgramCache]: Analyzing trace with hash 442678, now seen corresponding path program 1 times [2024-12-02 12:38:23,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:38:23,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096405035] [2024-12-02 12:38:23,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:23,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:24,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:24,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:24,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096405035] [2024-12-02 12:38:24,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096405035] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:38:24,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:38:24,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 12:38:24,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696212543] [2024-12-02 12:38:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:38:24,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:38:24,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:38:24,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:38:24,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:38:24,087 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-12-02 12:38:24,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:24,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:38:24,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-12-02 12:38:24,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:38:24,290 INFO L124 PetriNetUnfolderBase]: 465/800 cut-off events. [2024-12-02 12:38:24,291 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-12-02 12:38:24,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1620 conditions, 800 events. 465/800 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4112 event pairs, 388 based on Foata normal form. 1/597 useless extension candidates. Maximal degree in co-relation 1508. Up to 712 conditions per place. [2024-12-02 12:38:24,298 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 27 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-12-02 12:38:24,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 154 flow [2024-12-02 12:38:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:38:24,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:38:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-12-02 12:38:24,309 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2024-12-02 12:38:24,310 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 110 flow. Second operand 3 states and 77 transitions. [2024-12-02 12:38:24,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 154 flow [2024-12-02 12:38:24,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 142 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-12-02 12:38:24,335 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 88 flow [2024-12-02 12:38:24,337 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-12-02 12:38:24,339 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2024-12-02 12:38:24,340 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 88 flow [2024-12-02 12:38:24,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:24,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:38:24,340 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 12:38:24,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:38:24,340 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-12-02 12:38:24,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:38:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash 442679, now seen corresponding path program 1 times [2024-12-02 12:38:24,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:38:24,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538902141] [2024-12-02 12:38:24,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:24,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:24,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:24,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538902141] [2024-12-02 12:38:24,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538902141] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:38:24,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:38:24,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:38:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591828650] [2024-12-02 12:38:24,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:38:24,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:38:24,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:38:24,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:38:24,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:38:24,585 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-12-02 12:38:24,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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) [2024-12-02 12:38:24,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:38:24,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-12-02 12:38:24,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:38:24,752 INFO L124 PetriNetUnfolderBase]: 465/799 cut-off events. [2024-12-02 12:38:24,752 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:38:24,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 799 events. 465/799 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4070 event pairs, 388 based on Foata normal form. 0/596 useless extension candidates. Maximal degree in co-relation 1548. Up to 712 conditions per place. [2024-12-02 12:38:24,758 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 25 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-12-02 12:38:24,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 144 flow [2024-12-02 12:38:24,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:38:24,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:38:24,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-12-02 12:38:24,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-12-02 12:38:24,759 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 88 flow. Second operand 4 states and 86 transitions. [2024-12-02 12:38:24,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 144 flow [2024-12-02 12:38:24,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:38:24,761 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 90 flow [2024-12-02 12:38:24,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2024-12-02 12:38:24,762 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2024-12-02 12:38:24,762 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 90 flow [2024-12-02 12:38:24,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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) [2024-12-02 12:38:24,762 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:38:24,762 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 12:38:24,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:38:24,762 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-12-02 12:38:24,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:38:24,763 INFO L85 PathProgramCache]: Analyzing trace with hash 442682, now seen corresponding path program 1 times [2024-12-02 12:38:24,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:38:24,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203696948] [2024-12-02 12:38:24,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:24,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:24,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:24,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203696948] [2024-12-02 12:38:24,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203696948] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:38:24,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:38:24,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:38:24,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130626751] [2024-12-02 12:38:24,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:38:24,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:38:24,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:38:24,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:38:24,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:38:24,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-12-02 12:38:24,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:24,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:38:24,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-12-02 12:38:24,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:38:24,972 INFO L124 PetriNetUnfolderBase]: 328/567 cut-off events. [2024-12-02 12:38:24,973 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:38:24,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1112 conditions, 567 events. 328/567 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2624 event pairs, 263 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 1097. Up to 504 conditions per place. [2024-12-02 12:38:24,977 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 25 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2024-12-02 12:38:24,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 136 flow [2024-12-02 12:38:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:38:24,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:38:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-12-02 12:38:24,978 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.395 [2024-12-02 12:38:24,979 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 90 flow. Second operand 4 states and 79 transitions. [2024-12-02 12:38:24,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 136 flow [2024-12-02 12:38:24,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:38:24,980 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 78 flow [2024-12-02 12:38:24,980 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-12-02 12:38:24,981 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -15 predicate places. [2024-12-02 12:38:24,981 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 78 flow [2024-12-02 12:38:24,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:24,981 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:38:24,982 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 12:38:24,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:38:24,982 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-12-02 12:38:24,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:38:24,982 INFO L85 PathProgramCache]: Analyzing trace with hash 442683, now seen corresponding path program 1 times [2024-12-02 12:38:24,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:38:24,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298051060] [2024-12-02 12:38:24,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:24,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:25,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:25,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298051060] [2024-12-02 12:38:25,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298051060] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:38:25,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:38:25,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:38:25,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861611688] [2024-12-02 12:38:25,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:38:25,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:38:25,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:38:25,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:38:25,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:38:25,037 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-12-02 12:38:25,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:25,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:38:25,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-12-02 12:38:25,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:38:25,161 INFO L124 PetriNetUnfolderBase]: 328/569 cut-off events. [2024-12-02 12:38:25,161 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:38:25,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1114 conditions, 569 events. 328/569 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2627 event pairs, 263 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 1097. Up to 508 conditions per place. [2024-12-02 12:38:25,165 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 27 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-12-02 12:38:25,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 140 flow [2024-12-02 12:38:25,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:38:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:38:25,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-12-02 12:38:25,166 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-12-02 12:38:25,167 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 78 flow. Second operand 3 states and 75 transitions. [2024-12-02 12:38:25,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 140 flow [2024-12-02 12:38:25,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 137 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:38:25,168 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 87 flow [2024-12-02 12:38:25,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-12-02 12:38:25,169 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -14 predicate places. [2024-12-02 12:38:25,169 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 87 flow [2024-12-02 12:38:25,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:25,170 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:38:25,170 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 12:38:25,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:38:25,170 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-12-02 12:38:25,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:38:25,170 INFO L85 PathProgramCache]: Analyzing trace with hash 425428596, now seen corresponding path program 1 times [2024-12-02 12:38:25,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:38:25,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381992355] [2024-12-02 12:38:25,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:25,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:25,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:25,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381992355] [2024-12-02 12:38:25,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381992355] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:38:25,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267991994] [2024-12-02 12:38:25,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:25,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:38:25,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:38:25,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:38:25,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:38:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:25,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 12:38:25,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:38:25,398 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 8 treesize of output 1 [2024-12-02 12:38:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:25,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:38:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:25,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267991994] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 12:38:25,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:38:25,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2024-12-02 12:38:25,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78907837] [2024-12-02 12:38:25,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:38:25,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:38:25,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:38:25,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:38:25,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:38:25,526 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-12-02 12:38:25,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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) [2024-12-02 12:38:25,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:38:25,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-12-02 12:38:25,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:38:25,679 INFO L124 PetriNetUnfolderBase]: 328/567 cut-off events. [2024-12-02 12:38:25,679 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:38:25,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 567 events. 328/567 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2614 event pairs, 263 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 1104. Up to 504 conditions per place. [2024-12-02 12:38:25,683 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 26 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2024-12-02 12:38:25,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 143 flow [2024-12-02 12:38:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:38:25,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:38:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-12-02 12:38:25,684 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.384 [2024-12-02 12:38:25,684 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 87 flow. Second operand 5 states and 96 transitions. [2024-12-02 12:38:25,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 143 flow [2024-12-02 12:38:25,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:38:25,686 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 87 flow [2024-12-02 12:38:25,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=87, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-12-02 12:38:25,686 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -13 predicate places. [2024-12-02 12:38:25,686 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 87 flow [2024-12-02 12:38:25,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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) [2024-12-02 12:38:25,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:38:25,687 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:38:25,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:38:25,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:38:25,888 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-12-02 12:38:25,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:38:25,888 INFO L85 PathProgramCache]: Analyzing trace with hash 264776651, now seen corresponding path program 1 times [2024-12-02 12:38:25,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:38:25,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169325279] [2024-12-02 12:38:25,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:25,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:25,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:38:25,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:25,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169325279] [2024-12-02 12:38:25,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169325279] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:38:25,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:38:25,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:38:25,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416460950] [2024-12-02 12:38:25,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:38:25,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:38:25,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:38:25,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:38:25,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:38:25,984 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-12-02 12:38:25,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:25,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:38:25,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-12-02 12:38:25,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:38:26,112 INFO L124 PetriNetUnfolderBase]: 484/808 cut-off events. [2024-12-02 12:38:26,112 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 12:38:26,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1592 conditions, 808 events. 484/808 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3886 event pairs, 191 based on Foata normal form. 0/693 useless extension candidates. Maximal degree in co-relation 1568. Up to 535 conditions per place. [2024-12-02 12:38:26,116 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 38 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-12-02 12:38:26,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 201 flow [2024-12-02 12:38:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:38:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:38:26,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-12-02 12:38:26,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-12-02 12:38:26,118 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 87 flow. Second operand 4 states and 94 transitions. [2024-12-02 12:38:26,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 201 flow [2024-12-02 12:38:26,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:38:26,120 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 105 flow [2024-12-02 12:38:26,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-12-02 12:38:26,120 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2024-12-02 12:38:26,120 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 105 flow [2024-12-02 12:38:26,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:26,120 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:38:26,121 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:38:26,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:38:26,122 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-12-02 12:38:26,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:38:26,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1023000291, now seen corresponding path program 1 times [2024-12-02 12:38:26,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:38:26,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175547653] [2024-12-02 12:38:26,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:26,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:38:26,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:26,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175547653] [2024-12-02 12:38:26,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175547653] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:38:26,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:38:26,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:38:26,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655744993] [2024-12-02 12:38:26,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:38:26,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:38:26,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:38:26,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:38:26,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:38:26,206 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-12-02 12:38:26,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:26,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:38:26,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-12-02 12:38:26,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:38:26,365 INFO L124 PetriNetUnfolderBase]: 714/1171 cut-off events. [2024-12-02 12:38:26,365 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2024-12-02 12:38:26,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 1171 events. 714/1171 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5781 event pairs, 329 based on Foata normal form. 0/1074 useless extension candidates. Maximal degree in co-relation 2616. Up to 767 conditions per place. [2024-12-02 12:38:26,371 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 41 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-12-02 12:38:26,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 242 flow [2024-12-02 12:38:26,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:38:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:38:26,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-12-02 12:38:26,373 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.465 [2024-12-02 12:38:26,373 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 105 flow. Second operand 4 states and 93 transitions. [2024-12-02 12:38:26,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 242 flow [2024-12-02 12:38:26,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:38:26,375 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 121 flow [2024-12-02 12:38:26,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-12-02 12:38:26,375 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2024-12-02 12:38:26,375 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 121 flow [2024-12-02 12:38:26,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:26,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:38:26,376 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:38:26,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:38:26,376 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-12-02 12:38:26,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:38:26,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1893197662, now seen corresponding path program 1 times [2024-12-02 12:38:26,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:38:26,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321171970] [2024-12-02 12:38:26,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:26,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:26,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:26,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:26,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321171970] [2024-12-02 12:38:26,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321171970] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:38:26,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292934439] [2024-12-02 12:38:26,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:26,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:38:26,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:38:26,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:38:26,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:38:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:26,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:38:26,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:38:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:26,630 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:38:26,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:26,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292934439] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:38:26,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:38:26,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-12-02 12:38:26,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937711144] [2024-12-02 12:38:26,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:38:26,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 12:38:26,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:38:26,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 12:38:26,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:38:26,743 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-12-02 12:38:26,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 121 flow. Second operand has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:26,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:38:26,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-12-02 12:38:26,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:38:27,113 INFO L124 PetriNetUnfolderBase]: 1475/2355 cut-off events. [2024-12-02 12:38:27,113 INFO L125 PetriNetUnfolderBase]: For 901/901 co-relation queries the response was YES. [2024-12-02 12:38:27,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5871 conditions, 2355 events. 1475/2355 cut-off events. For 901/901 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12390 event pairs, 868 based on Foata normal form. 44/2329 useless extension candidates. Maximal degree in co-relation 3536. Up to 1317 conditions per place. [2024-12-02 12:38:27,138 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 79 selfloop transitions, 10 changer transitions 0/93 dead transitions. [2024-12-02 12:38:27,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 93 transitions, 483 flow [2024-12-02 12:38:27,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:38:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 12:38:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-12-02 12:38:27,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-12-02 12:38:27,140 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 121 flow. Second operand 8 states and 192 transitions. [2024-12-02 12:38:27,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 93 transitions, 483 flow [2024-12-02 12:38:27,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 93 transitions, 467 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:38:27,143 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 195 flow [2024-12-02 12:38:27,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=195, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-12-02 12:38:27,144 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2024-12-02 12:38:27,144 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 195 flow [2024-12-02 12:38:27,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:27,144 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:38:27,144 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:38:27,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:38:27,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:38:27,345 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-12-02 12:38:27,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:38:27,345 INFO L85 PathProgramCache]: Analyzing trace with hash -885739149, now seen corresponding path program 1 times [2024-12-02 12:38:27,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:38:27,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88112063] [2024-12-02 12:38:27,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:27,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:27,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:27,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:27,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88112063] [2024-12-02 12:38:27,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88112063] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:38:27,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382986964] [2024-12-02 12:38:27,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:27,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:38:27,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:38:27,442 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:38:27,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:38:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:27,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:38:27,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:38:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:27,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:38:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:27,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382986964] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:38:27,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:38:27,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-12-02 12:38:27,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76383807] [2024-12-02 12:38:27,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:38:27,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 12:38:27,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:38:27,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 12:38:27,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:38:27,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-12-02 12:38:27,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 195 flow. Second operand has 14 states, 14 states have (on average 16.285714285714285) internal successors, (228), 14 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:27,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:38:27,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-12-02 12:38:27,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:38:28,011 INFO L124 PetriNetUnfolderBase]: 1290/2009 cut-off events. [2024-12-02 12:38:28,012 INFO L125 PetriNetUnfolderBase]: For 1880/1930 co-relation queries the response was YES. [2024-12-02 12:38:28,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5489 conditions, 2009 events. 1290/2009 cut-off events. For 1880/1930 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10128 event pairs, 801 based on Foata normal form. 32/1983 useless extension candidates. Maximal degree in co-relation 3604. Up to 1319 conditions per place. [2024-12-02 12:38:28,023 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 71 selfloop transitions, 10 changer transitions 0/85 dead transitions. [2024-12-02 12:38:28,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 507 flow [2024-12-02 12:38:28,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:38:28,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 12:38:28,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-12-02 12:38:28,024 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4675 [2024-12-02 12:38:28,024 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 195 flow. Second operand 8 states and 187 transitions. [2024-12-02 12:38:28,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 507 flow [2024-12-02 12:38:28,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 493 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-12-02 12:38:28,029 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 240 flow [2024-12-02 12:38:28,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=240, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2024-12-02 12:38:28,029 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2024-12-02 12:38:28,029 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 240 flow [2024-12-02 12:38:28,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.285714285714285) internal successors, (228), 14 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:28,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:38:28,030 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:38:28,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:38:28,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:38:28,230 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-12-02 12:38:28,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:38:28,231 INFO L85 PathProgramCache]: Analyzing trace with hash 871787163, now seen corresponding path program 2 times [2024-12-02 12:38:28,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:38:28,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760268883] [2024-12-02 12:38:28,231 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:38:28,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:28,249 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:38:28,249 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:38:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 12:38:28,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:28,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760268883] [2024-12-02 12:38:28,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760268883] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:38:28,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116305053] [2024-12-02 12:38:28,419 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:38:28,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:38:28,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:38:28,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:38:28,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:38:28,476 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:38:28,477 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:38:28,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 12:38:28,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:38:28,623 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:28,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:38:28,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-12-02 12:38:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:38:28,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116305053] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:38:28,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:38:28,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19 [2024-12-02 12:38:28,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662139082] [2024-12-02 12:38:28,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:38:28,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 12:38:28,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:38:28,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 12:38:28,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-12-02 12:38:29,163 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-12-02 12:38:29,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 240 flow. Second operand has 21 states, 21 states have (on average 14.095238095238095) internal successors, (296), 21 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:29,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:38:29,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-12-02 12:38:29,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:38:30,152 INFO L124 PetriNetUnfolderBase]: 1515/2302 cut-off events. [2024-12-02 12:38:30,152 INFO L125 PetriNetUnfolderBase]: For 2269/2310 co-relation queries the response was YES. [2024-12-02 12:38:30,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6914 conditions, 2302 events. 1515/2302 cut-off events. For 2269/2310 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11518 event pairs, 266 based on Foata normal form. 88/2350 useless extension candidates. Maximal degree in co-relation 4770. Up to 455 conditions per place. [2024-12-02 12:38:30,165 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 133 selfloop transitions, 18 changer transitions 0/155 dead transitions. [2024-12-02 12:38:30,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 155 transitions, 940 flow [2024-12-02 12:38:30,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:38:30,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-12-02 12:38:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 307 transitions. [2024-12-02 12:38:30,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43857142857142856 [2024-12-02 12:38:30,167 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 240 flow. Second operand 14 states and 307 transitions. [2024-12-02 12:38:30,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 155 transitions, 940 flow [2024-12-02 12:38:30,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 155 transitions, 917 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-12-02 12:38:30,174 INFO L231 Difference]: Finished difference. Result has 72 places, 51 transitions, 284 flow [2024-12-02 12:38:30,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=284, PETRI_PLACES=72, PETRI_TRANSITIONS=51} [2024-12-02 12:38:30,175 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2024-12-02 12:38:30,175 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 51 transitions, 284 flow [2024-12-02 12:38:30,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.095238095238095) internal successors, (296), 21 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:30,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:38:30,175 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:38:30,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 12:38:30,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:38:30,376 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-12-02 12:38:30,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:38:30,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1974888748, now seen corresponding path program 2 times [2024-12-02 12:38:30,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:38:30,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546088481] [2024-12-02 12:38:30,377 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:38:30,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:30,387 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:38:30,387 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:38:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 12:38:30,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:30,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546088481] [2024-12-02 12:38:30,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546088481] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:38:30,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507926178] [2024-12-02 12:38:30,523 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:38:30,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:38:30,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:38:30,525 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:38:30,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:38:30,588 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:38:30,589 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:38:30,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 12:38:30,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:38:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 12:38:30,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:38:30,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-12-02 12:38:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 12:38:30,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507926178] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:38:30,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:38:30,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-12-02 12:38:30,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826207983] [2024-12-02 12:38:30,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:38:30,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 12:38:30,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:38:30,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 12:38:30,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-12-02 12:38:31,140 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-12-02 12:38:31,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 51 transitions, 284 flow. Second operand has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:31,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:38:31,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-12-02 12:38:31,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:38:31,491 INFO L124 PetriNetUnfolderBase]: 1351/2048 cut-off events. [2024-12-02 12:38:31,491 INFO L125 PetriNetUnfolderBase]: For 3968/4034 co-relation queries the response was YES. [2024-12-02 12:38:31,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6826 conditions, 2048 events. 1351/2048 cut-off events. For 3968/4034 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10240 event pairs, 244 based on Foata normal form. 50/2061 useless extension candidates. Maximal degree in co-relation 4526. Up to 586 conditions per place. [2024-12-02 12:38:31,499 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 96 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2024-12-02 12:38:31,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 116 transitions, 902 flow [2024-12-02 12:38:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:38:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 12:38:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-12-02 12:38:31,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4075 [2024-12-02 12:38:31,500 INFO L175 Difference]: Start difference. First operand has 72 places, 51 transitions, 284 flow. Second operand 8 states and 163 transitions. [2024-12-02 12:38:31,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 116 transitions, 902 flow [2024-12-02 12:38:31,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 116 transitions, 692 flow, removed 43 selfloop flow, removed 12 redundant places. [2024-12-02 12:38:31,507 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 250 flow [2024-12-02 12:38:31,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=250, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2024-12-02 12:38:31,507 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2024-12-02 12:38:31,507 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 250 flow [2024-12-02 12:38:31,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:31,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:38:31,508 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:38:31,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:38:31,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:38:31,708 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-12-02 12:38:31,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:38:31,709 INFO L85 PathProgramCache]: Analyzing trace with hash -819191852, now seen corresponding path program 1 times [2024-12-02 12:38:31,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:38:31,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931163939] [2024-12-02 12:38:31,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:31,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 12:38:31,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:31,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931163939] [2024-12-02 12:38:31,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931163939] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:38:31,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:38:31,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:38:31,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768306904] [2024-12-02 12:38:31,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:38:31,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:38:31,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:38:31,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:38:31,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:38:31,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-12-02 12:38:31,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:31,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:38:31,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-12-02 12:38:31,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:38:31,931 INFO L124 PetriNetUnfolderBase]: 996/1675 cut-off events. [2024-12-02 12:38:31,931 INFO L125 PetriNetUnfolderBase]: For 2629/2683 co-relation queries the response was YES. [2024-12-02 12:38:31,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5247 conditions, 1675 events. 996/1675 cut-off events. For 2629/2683 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9097 event pairs, 539 based on Foata normal form. 70/1697 useless extension candidates. Maximal degree in co-relation 3504. Up to 1071 conditions per place. [2024-12-02 12:38:31,938 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 52 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2024-12-02 12:38:31,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 66 transitions, 451 flow [2024-12-02 12:38:31,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:38:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:38:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-12-02 12:38:31,939 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-12-02 12:38:31,939 INFO L175 Difference]: Start difference. First operand has 66 places, 51 transitions, 250 flow. Second operand 4 states and 98 transitions. [2024-12-02 12:38:31,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 66 transitions, 451 flow [2024-12-02 12:38:31,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 379 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-12-02 12:38:31,944 INFO L231 Difference]: Finished difference. Result has 63 places, 49 transitions, 212 flow [2024-12-02 12:38:31,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=63, PETRI_TRANSITIONS=49} [2024-12-02 12:38:31,944 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2024-12-02 12:38:31,945 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 212 flow [2024-12-02 12:38:31,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:31,945 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:38:31,945 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:38:31,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:38:31,945 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-12-02 12:38:31,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:38:31,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1443970269, now seen corresponding path program 1 times [2024-12-02 12:38:31,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:38:31,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856425137] [2024-12-02 12:38:31,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:31,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:38:31,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:31,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856425137] [2024-12-02 12:38:31,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856425137] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:38:31,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:38:31,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:38:31,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401262525] [2024-12-02 12:38:31,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:38:31,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:38:31,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:38:31,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:38:31,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:38:31,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-12-02 12:38:31,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 49 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:31,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:38:31,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-12-02 12:38:31,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:38:32,122 INFO L124 PetriNetUnfolderBase]: 914/1588 cut-off events. [2024-12-02 12:38:32,122 INFO L125 PetriNetUnfolderBase]: For 1356/1402 co-relation queries the response was YES. [2024-12-02 12:38:32,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4268 conditions, 1588 events. 914/1588 cut-off events. For 1356/1402 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9006 event pairs, 487 based on Foata normal form. 82/1623 useless extension candidates. Maximal degree in co-relation 2850. Up to 925 conditions per place. [2024-12-02 12:38:32,128 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 49 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2024-12-02 12:38:32,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 380 flow [2024-12-02 12:38:32,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:38:32,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:38:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-12-02 12:38:32,129 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.485 [2024-12-02 12:38:32,129 INFO L175 Difference]: Start difference. First operand has 63 places, 49 transitions, 212 flow. Second operand 4 states and 97 transitions. [2024-12-02 12:38:32,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 380 flow [2024-12-02 12:38:32,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 360 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:38:32,133 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 202 flow [2024-12-02 12:38:32,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2024-12-02 12:38:32,133 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2024-12-02 12:38:32,133 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 202 flow [2024-12-02 12:38:32,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:32,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:38:32,134 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:38:32,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:38:32,134 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-12-02 12:38:32,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:38:32,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1797422691, now seen corresponding path program 1 times [2024-12-02 12:38:32,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:38:32,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093203952] [2024-12-02 12:38:32,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:38:32,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:38:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:38:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:38:32,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:38:32,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093203952] [2024-12-02 12:38:32,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093203952] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:38:32,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:38:32,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:38:32,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627169667] [2024-12-02 12:38:32,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:38:32,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:38:32,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:38:32,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:38:32,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:38:32,354 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-12-02 12:38:32,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:32,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:38:32,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-12-02 12:38:32,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:38:32,585 INFO L124 PetriNetUnfolderBase]: 1294/2032 cut-off events. [2024-12-02 12:38:32,585 INFO L125 PetriNetUnfolderBase]: For 2102/2177 co-relation queries the response was YES. [2024-12-02 12:38:32,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5496 conditions, 2032 events. 1294/2032 cut-off events. For 2102/2177 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9654 event pairs, 141 based on Foata normal form. 2/2022 useless extension candidates. Maximal degree in co-relation 3680. Up to 824 conditions per place. [2024-12-02 12:38:32,589 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 0 selfloop transitions, 0 changer transitions 106/106 dead transitions. [2024-12-02 12:38:32,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 648 flow [2024-12-02 12:38:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:38:32,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:38:32,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 207 transitions. [2024-12-02 12:38:32,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.414 [2024-12-02 12:38:32,590 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 202 flow. Second operand 10 states and 207 transitions. [2024-12-02 12:38:32,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 648 flow [2024-12-02 12:38:32,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 106 transitions, 612 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:38:32,594 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2024-12-02 12:38:32,595 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2024-12-02 12:38:32,595 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-12-02 12:38:32,595 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2024-12-02 12:38:32,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:38:32,597 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 27 remaining) [2024-12-02 12:38:32,598 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 27 remaining) [2024-12-02 12:38:32,598 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 27 remaining) [2024-12-02 12:38:32,598 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 27 remaining) [2024-12-02 12:38:32,598 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 27 remaining) [2024-12-02 12:38:32,598 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 27 remaining) [2024-12-02 12:38:32,598 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2024-12-02 12:38:32,598 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2024-12-02 12:38:32,598 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 27 remaining) [2024-12-02 12:38:32,598 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2024-12-02 12:38:32,598 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2024-12-02 12:38:32,598 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2024-12-02 12:38:32,598 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 27 remaining) [2024-12-02 12:38:32,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 27 remaining) [2024-12-02 12:38:32,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (12 of 27 remaining) [2024-12-02 12:38:32,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (11 of 27 remaining) [2024-12-02 12:38:32,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 27 remaining) [2024-12-02 12:38:32,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 27 remaining) [2024-12-02 12:38:32,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 27 remaining) [2024-12-02 12:38:32,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2024-12-02 12:38:32,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2024-12-02 12:38:32,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2024-12-02 12:38:32,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2024-12-02 12:38:32,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2024-12-02 12:38:32,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2024-12-02 12:38:32,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2024-12-02 12:38:32,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 27 remaining) [2024-12-02 12:38:32,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 12:38:32,600 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:38:32,605 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-12-02 12:38:32,605 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 12:38:32,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:38:32 BasicIcfg [2024-12-02 12:38:32,610 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 12:38:32,611 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 12:38:32,611 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 12:38:32,611 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 12:38:32,612 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:38:23" (3/4) ... [2024-12-02 12:38:32,613 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 12:38:32,616 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-12-02 12:38:32,616 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-12-02 12:38:32,616 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-12-02 12:38:32,620 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 91 nodes and edges [2024-12-02 12:38:32,620 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-12-02 12:38:32,620 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-12-02 12:38:32,621 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-12-02 12:38:32,693 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 12:38:32,693 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 12:38:32,694 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 12:38:32,694 INFO L158 Benchmark]: Toolchain (without parser) took 9865.19ms. Allocated memory was 117.4MB in the beginning and 201.3MB in the end (delta: 83.9MB). Free memory was 92.3MB in the beginning and 118.3MB in the end (delta: -26.0MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2024-12-02 12:38:32,695 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 117.4MB. Free memory was 73.4MB in the beginning and 73.3MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:38:32,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.46ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 80.3MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:38:32,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.57ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 79.1MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:38:32,695 INFO L158 Benchmark]: Boogie Preprocessor took 37.62ms. Allocated memory is still 117.4MB. Free memory was 78.8MB in the beginning and 76.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:38:32,695 INFO L158 Benchmark]: RCFGBuilder took 567.97ms. Allocated memory is still 117.4MB. Free memory was 76.9MB in the beginning and 90.7MB in the end (delta: -13.8MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2024-12-02 12:38:32,696 INFO L158 Benchmark]: TraceAbstraction took 8908.70ms. Allocated memory was 117.4MB in the beginning and 201.3MB in the end (delta: 83.9MB). Free memory was 90.1MB in the beginning and 122.3MB in the end (delta: -32.2MB). Peak memory consumption was 116.5MB. Max. memory is 16.1GB. [2024-12-02 12:38:32,696 INFO L158 Benchmark]: Witness Printer took 82.59ms. Allocated memory is still 201.3MB. Free memory was 122.3MB in the beginning and 118.3MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:38:32,698 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 117.4MB. Free memory was 73.4MB in the beginning and 73.3MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.46ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 80.3MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.57ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 79.1MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.62ms. Allocated memory is still 117.4MB. Free memory was 78.8MB in the beginning and 76.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 567.97ms. Allocated memory is still 117.4MB. Free memory was 76.9MB in the beginning and 90.7MB in the end (delta: -13.8MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8908.70ms. Allocated memory was 117.4MB in the beginning and 201.3MB in the end (delta: 83.9MB). Free memory was 90.1MB in the beginning and 122.3MB in the end (delta: -32.2MB). Peak memory consumption was 116.5MB. Max. memory is 16.1GB. * Witness Printer took 82.59ms. Allocated memory is still 201.3MB. Free memory was 122.3MB in the beginning and 118.3MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 78]: 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 7 procedures, 73 locations, 27 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.8s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1017 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 911 mSDsluCounter, 343 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 324 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4046 IncrementalHoareTripleChecker+Invalid, 4074 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 19 mSDtfsCounter, 4046 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=284occurred in iteration=10, InterpolantAutomatonStates: 83, 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, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 2295 SizeOfPredicates, 19 NumberOfNonLiveVariables, 592 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 56/85 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 12:38:32,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57c4b43-5990-43fb-81e8-8c2ce9f9b865/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE