./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.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_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/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_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/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_5db57fa3-198a-4fcc-9ed2-866389ff2153/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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:38:25,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:38:25,561 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 13:38:25,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:38:25,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:38:25,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:38:25,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:38:25,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:38:25,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:38:25,592 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:38:25,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:38:25,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:38:25,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:38:25,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:38:25,593 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:38:25,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:38:25,593 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:38:25,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:38:25,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:38:25,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:38:25,594 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 13:38:25,594 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 13:38:25,594 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 13:38:25,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:38:25,594 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 13:38:25,594 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 13:38:25,594 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:38:25,594 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:38:25,594 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:38:25,594 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:38:25,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:38:25,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:38:25,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:38:25,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:38:25,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:38:25,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:38:25,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:38:25,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:38:25,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:38:25,595 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:38:25,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:38:25,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:38:25,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:38:25,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:38:25,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:38:25,596 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:38:25,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:38:25,596 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_5db57fa3-198a-4fcc-9ed2-866389ff2153/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 -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-12-02 13:38:25,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:38:25,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:38:25,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:38:25,858 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:38:25,859 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:38:25,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-12-02 13:38:28,634 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/data/39474b56a/ca44399e78734999b1bda877316b90d2/FLAG42fdd793d [2024-12-02 13:38:28,830 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:38:28,830 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-12-02 13:38:28,839 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/data/39474b56a/ca44399e78734999b1bda877316b90d2/FLAG42fdd793d [2024-12-02 13:38:28,852 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/data/39474b56a/ca44399e78734999b1bda877316b90d2 [2024-12-02 13:38:28,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:38:28,855 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:38:28,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:38:28,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:38:28,860 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:38:28,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:38:28" (1/1) ... [2024-12-02 13:38:28,862 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f73435b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:28, skipping insertion in model container [2024-12-02 13:38:28,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:38:28" (1/1) ... [2024-12-02 13:38:28,880 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:38:29,073 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 13:38:29,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:38:29,088 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:38:29,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:38:29,140 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:38:29,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29 WrapperNode [2024-12-02 13:38:29,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:38:29,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:38:29,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:38:29,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:38:29,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29" (1/1) ... [2024-12-02 13:38:29,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29" (1/1) ... [2024-12-02 13:38:29,185 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 249 [2024-12-02 13:38:29,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:38:29,185 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:38:29,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:38:29,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:38:29,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29" (1/1) ... [2024-12-02 13:38:29,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29" (1/1) ... [2024-12-02 13:38:29,200 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29" (1/1) ... [2024-12-02 13:38:29,219 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 2 writes are split as follows [0, 2]. [2024-12-02 13:38:29,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29" (1/1) ... [2024-12-02 13:38:29,219 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29" (1/1) ... [2024-12-02 13:38:29,228 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29" (1/1) ... [2024-12-02 13:38:29,230 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29" (1/1) ... [2024-12-02 13:38:29,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29" (1/1) ... [2024-12-02 13:38:29,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29" (1/1) ... [2024-12-02 13:38:29,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29" (1/1) ... [2024-12-02 13:38:29,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:38:29,242 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:38:29,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:38:29,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:38:29,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29" (1/1) ... [2024-12-02 13:38:29,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:38:29,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:29,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:38:29,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:38:29,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:38:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 13:38:29,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 13:38:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 13:38:29,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 13:38:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 13:38:29,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 13:38:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:38:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 13:38:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 13:38:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 13:38:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 13:38:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 13:38:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 13:38:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:38:29,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:38:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 13:38:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 13:38:29,299 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 13:38:29,401 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:38:29,403 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:38:29,857 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 13:38:29,857 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:38:30,198 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:38:30,199 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-12-02 13:38:30,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:38:30 BoogieIcfgContainer [2024-12-02 13:38:30,199 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:38:30,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:38:30,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:38:30,206 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:38:30,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:38:28" (1/3) ... [2024-12-02 13:38:30,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61fd2630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:38:30, skipping insertion in model container [2024-12-02 13:38:30,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:29" (2/3) ... [2024-12-02 13:38:30,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61fd2630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:38:30, skipping insertion in model container [2024-12-02 13:38:30,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:38:30" (3/3) ... [2024-12-02 13:38:30,208 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-12-02 13:38:30,226 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:38:30,228 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-queue-add-3-nl.wvr.c that has 4 procedures, 54 locations, 1 initial locations, 5 loop locations, and 16 error locations. [2024-12-02 13:38:30,228 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 13:38:30,295 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 13:38:30,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 62 transitions, 145 flow [2024-12-02 13:38:30,372 INFO L124 PetriNetUnfolderBase]: 9/59 cut-off events. [2024-12-02 13:38:30,375 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-12-02 13:38:30,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 9/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 144 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2024-12-02 13:38:30,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 62 transitions, 145 flow [2024-12-02 13:38:30,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 58 transitions, 134 flow [2024-12-02 13:38:30,392 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:38:30,423 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;@277a3515, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:38:30,423 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-12-02 13:38:30,429 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 13:38:30,429 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-12-02 13:38:30,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 13:38:30,430 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:30,430 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 13:38:30,431 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:30,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:30,436 INFO L85 PathProgramCache]: Analyzing trace with hash 750207, now seen corresponding path program 1 times [2024-12-02 13:38:30,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:30,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577998311] [2024-12-02 13:38:30,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:30,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:30,681 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 13:38:30,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:30,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577998311] [2024-12-02 13:38:30,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577998311] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:30,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:30,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 13:38:30,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681093628] [2024-12-02 13:38:30,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:30,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:38:30,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:30,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:38:30,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:38:30,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:38:30,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 13:38:30,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:30,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:38:30,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:31,581 INFO L124 PetriNetUnfolderBase]: 4012/6041 cut-off events. [2024-12-02 13:38:31,582 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2024-12-02 13:38:31,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11742 conditions, 6041 events. 4012/6041 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 33701 event pairs, 3528 based on Foata normal form. 1/3961 useless extension candidates. Maximal degree in co-relation 11222. Up to 5391 conditions per place. [2024-12-02 13:38:31,617 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 40 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-12-02 13:38:31,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 202 flow [2024-12-02 13:38:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:38:31,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:38:31,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-12-02 13:38:31,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45698924731182794 [2024-12-02 13:38:31,630 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 134 flow. Second operand 3 states and 85 transitions. [2024-12-02 13:38:31,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 202 flow [2024-12-02 13:38:31,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 190 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-12-02 13:38:31,641 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 110 flow [2024-12-02 13:38:31,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2024-12-02 13:38:31,646 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -8 predicate places. [2024-12-02 13:38:31,646 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 110 flow [2024-12-02 13:38:31,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 13:38:31,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:31,647 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 13:38:31,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 13:38:31,647 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:31,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:31,648 INFO L85 PathProgramCache]: Analyzing trace with hash 750208, now seen corresponding path program 1 times [2024-12-02 13:38:31,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:31,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63494281] [2024-12-02 13:38:31,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:31,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:31,932 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 13:38:31,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:31,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63494281] [2024-12-02 13:38:31,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63494281] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:31,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:31,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:38:31,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692574302] [2024-12-02 13:38:31,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:31,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:38:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:31,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:38:31,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:38:31,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:38:31,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 110 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 13:38:31,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:31,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:38:31,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:32,695 INFO L124 PetriNetUnfolderBase]: 4013/6044 cut-off events. [2024-12-02 13:38:32,695 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-12-02 13:38:32,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11561 conditions, 6044 events. 4013/6044 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 33663 event pairs, 3528 based on Foata normal form. 0/3961 useless extension candidates. Maximal degree in co-relation 11532. Up to 5400 conditions per place. [2024-12-02 13:38:32,737 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-12-02 13:38:32,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 210 flow [2024-12-02 13:38:32,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:38:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 13:38:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-12-02 13:38:32,739 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-12-02 13:38:32,739 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 110 flow. Second operand 4 states and 96 transitions. [2024-12-02 13:38:32,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 210 flow [2024-12-02 13:38:32,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 13:38:32,742 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 133 flow [2024-12-02 13:38:32,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2024-12-02 13:38:32,743 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2024-12-02 13:38:32,743 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 133 flow [2024-12-02 13:38:32,743 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 13:38:32,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:32,743 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-12-02 13:38:32,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:38:32,744 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:32,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:32,744 INFO L85 PathProgramCache]: Analyzing trace with hash 23258047, now seen corresponding path program 1 times [2024-12-02 13:38:32,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:32,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263378026] [2024-12-02 13:38:32,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:32,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:33,009 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 13:38:33,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:33,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263378026] [2024-12-02 13:38:33,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263378026] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:33,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:33,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:38:33,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60956269] [2024-12-02 13:38:33,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:33,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:38:33,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:33,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:38:33,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:38:33,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:38:33,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 13:38:33,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:33,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:38:33,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:33,616 INFO L124 PetriNetUnfolderBase]: 4014/6047 cut-off events. [2024-12-02 13:38:33,616 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-12-02 13:38:33,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11578 conditions, 6047 events. 4014/6047 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 33717 event pairs, 3528 based on Foata normal form. 0/3963 useless extension candidates. Maximal degree in co-relation 11553. Up to 5399 conditions per place. [2024-12-02 13:38:33,647 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 43 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-12-02 13:38:33,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 239 flow [2024-12-02 13:38:33,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:38:33,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 13:38:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-12-02 13:38:33,649 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-12-02 13:38:33,649 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 133 flow. Second operand 5 states and 111 transitions. [2024-12-02 13:38:33,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 239 flow [2024-12-02 13:38:33,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 13:38:33,651 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 167 flow [2024-12-02 13:38:33,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-12-02 13:38:33,652 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2024-12-02 13:38:33,652 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 167 flow [2024-12-02 13:38:33,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 13:38:33,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:33,653 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-12-02 13:38:33,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:38:33,653 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:33,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:33,654 INFO L85 PathProgramCache]: Analyzing trace with hash 720974541, now seen corresponding path program 1 times [2024-12-02 13:38:33,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:33,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916476422] [2024-12-02 13:38:33,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:33,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:38:33,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:33,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916476422] [2024-12-02 13:38:33,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916476422] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:33,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666755801] [2024-12-02 13:38:33,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:33,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:33,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:33,912 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:33,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:38:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:33,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 13:38:33,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:34,049 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 13:38:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:38:34,181 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:38:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:38:34,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666755801] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:38:34,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:38:34,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-12-02 13:38:34,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270495101] [2024-12-02 13:38:34,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:38:34,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:34,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:34,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:34,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:34,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:38:34,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 167 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 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 13:38:34,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:34,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:38:34,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:34,995 INFO L124 PetriNetUnfolderBase]: 4015/6049 cut-off events. [2024-12-02 13:38:34,995 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-12-02 13:38:35,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11601 conditions, 6049 events. 4015/6049 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 33748 event pairs, 3528 based on Foata normal form. 0/3968 useless extension candidates. Maximal degree in co-relation 11563. Up to 5400 conditions per place. [2024-12-02 13:38:35,023 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 42 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2024-12-02 13:38:35,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 282 flow [2024-12-02 13:38:35,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 13:38:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 13:38:35,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-12-02 13:38:35,026 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2963709677419355 [2024-12-02 13:38:35,026 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 167 flow. Second operand 8 states and 147 transitions. [2024-12-02 13:38:35,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 282 flow [2024-12-02 13:38:35,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 58 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 13:38:35,028 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 197 flow [2024-12-02 13:38:35,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=197, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-12-02 13:38:35,029 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2024-12-02 13:38:35,030 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 197 flow [2024-12-02 13:38:35,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 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 13:38:35,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:35,030 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 13:38:35,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:38:35,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-12-02 13:38:35,231 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:35,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:35,231 INFO L85 PathProgramCache]: Analyzing trace with hash 876170637, now seen corresponding path program 1 times [2024-12-02 13:38:35,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:35,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958168118] [2024-12-02 13:38:35,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:35,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:38:35,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:35,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958168118] [2024-12-02 13:38:35,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958168118] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:35,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534315239] [2024-12-02 13:38:35,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:35,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:35,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:35,465 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:35,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:38:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:35,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 13:38:35,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:35,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-12-02 13:38:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:38:35,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:38:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:38:35,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534315239] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:38:35,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:38:35,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-12-02 13:38:35,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660675267] [2024-12-02 13:38:35,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:38:35,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 13:38:35,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:35,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 13:38:35,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:38:36,106 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:38:36,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 197 flow. Second operand has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:36,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:36,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:38:36,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:36,786 INFO L124 PetriNetUnfolderBase]: 4015/6048 cut-off events. [2024-12-02 13:38:36,786 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-12-02 13:38:36,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11608 conditions, 6048 events. 4015/6048 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 33761 event pairs, 3528 based on Foata normal form. 0/3968 useless extension candidates. Maximal degree in co-relation 11562. Up to 5391 conditions per place. [2024-12-02 13:38:36,815 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 36 selfloop transitions, 15 changer transitions 0/57 dead transitions. [2024-12-02 13:38:36,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 57 transitions, 295 flow [2024-12-02 13:38:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:38:36,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 13:38:36,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-12-02 13:38:36,817 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-12-02 13:38:36,817 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 197 flow. Second operand 7 states and 133 transitions. [2024-12-02 13:38:36,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 57 transitions, 295 flow [2024-12-02 13:38:36,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 248 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-12-02 13:38:36,820 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 176 flow [2024-12-02 13:38:36,820 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=176, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-12-02 13:38:36,821 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2024-12-02 13:38:36,821 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 176 flow [2024-12-02 13:38:36,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:36,821 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:36,821 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:36,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:38:37,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:37,022 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:37,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:37,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1394634234, now seen corresponding path program 1 times [2024-12-02 13:38:37,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:37,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705260957] [2024-12-02 13:38:37,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:37,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:37,094 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 13:38:37,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:37,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705260957] [2024-12-02 13:38:37,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705260957] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:37,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:37,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:38:37,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684730827] [2024-12-02 13:38:37,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:37,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:38:37,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:37,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:38:37,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:38:37,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-12-02 13:38:37,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 13:38:37,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:37,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-12-02 13:38:37,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:37,520 INFO L124 PetriNetUnfolderBase]: 4175/6329 cut-off events. [2024-12-02 13:38:37,520 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-12-02 13:38:37,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12156 conditions, 6329 events. 4175/6329 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 35391 event pairs, 3675 based on Foata normal form. 115/4328 useless extension candidates. Maximal degree in co-relation 11556. Up to 5403 conditions per place. [2024-12-02 13:38:37,543 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 66 selfloop transitions, 5 changer transitions 1/78 dead transitions. [2024-12-02 13:38:37,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 391 flow [2024-12-02 13:38:37,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:38:37,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 13:38:37,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-12-02 13:38:37,545 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-12-02 13:38:37,545 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 176 flow. Second operand 5 states and 145 transitions. [2024-12-02 13:38:37,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 391 flow [2024-12-02 13:38:37,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 350 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-12-02 13:38:37,547 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 194 flow [2024-12-02 13:38:37,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-12-02 13:38:37,548 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 3 predicate places. [2024-12-02 13:38:37,548 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 194 flow [2024-12-02 13:38:37,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 13:38:37,548 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:37,548 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:37,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:38:37,549 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:37,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:37,549 INFO L85 PathProgramCache]: Analyzing trace with hash -714391609, now seen corresponding path program 1 times [2024-12-02 13:38:37,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:37,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905415504] [2024-12-02 13:38:37,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:37,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 13:38:37,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:37,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905415504] [2024-12-02 13:38:37,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905415504] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:37,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:37,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:38:37,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525750997] [2024-12-02 13:38:37,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:37,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:38:37,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:37,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:38:37,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:38:37,668 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:38:37,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 13:38:37,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:37,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:38:37,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:38,033 INFO L124 PetriNetUnfolderBase]: 3026/4593 cut-off events. [2024-12-02 13:38:38,033 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2024-12-02 13:38:38,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9753 conditions, 4593 events. 3026/4593 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 24114 event pairs, 2670 based on Foata normal form. 0/3307 useless extension candidates. Maximal degree in co-relation 9178. Up to 4162 conditions per place. [2024-12-02 13:38:38,053 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 43 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-12-02 13:38:38,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 282 flow [2024-12-02 13:38:38,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:38:38,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 13:38:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-12-02 13:38:38,055 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-12-02 13:38:38,055 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 194 flow. Second operand 5 states and 102 transitions. [2024-12-02 13:38:38,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 282 flow [2024-12-02 13:38:38,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 277 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 13:38:38,058 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 191 flow [2024-12-02 13:38:38,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-12-02 13:38:38,059 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2024-12-02 13:38:38,059 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 191 flow [2024-12-02 13:38:38,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 13:38:38,059 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:38,059 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:38,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:38:38,059 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:38,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:38,060 INFO L85 PathProgramCache]: Analyzing trace with hash -714391608, now seen corresponding path program 1 times [2024-12-02 13:38:38,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:38,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64087907] [2024-12-02 13:38:38,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:38,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:38,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 13:38:38,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:38,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64087907] [2024-12-02 13:38:38,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64087907] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:38,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:38,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:38:38,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885005358] [2024-12-02 13:38:38,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:38,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:38:38,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:38,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:38:38,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:38:38,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:38:38,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:38,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:38,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:38:38,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:38,629 INFO L124 PetriNetUnfolderBase]: 2129/3277 cut-off events. [2024-12-02 13:38:38,629 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2024-12-02 13:38:38,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6658 conditions, 3277 events. 2129/3277 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16048 event pairs, 1813 based on Foata normal form. 0/2644 useless extension candidates. Maximal degree in co-relation 6039. Up to 2905 conditions per place. [2024-12-02 13:38:38,641 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-12-02 13:38:38,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 273 flow [2024-12-02 13:38:38,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:38:38,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 13:38:38,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-12-02 13:38:38,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-12-02 13:38:38,642 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 191 flow. Second operand 4 states and 87 transitions. [2024-12-02 13:38:38,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 273 flow [2024-12-02 13:38:38,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 262 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 13:38:38,661 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 176 flow [2024-12-02 13:38:38,661 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-12-02 13:38:38,661 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2024-12-02 13:38:38,662 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 176 flow [2024-12-02 13:38:38,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:38,662 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:38,662 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:38,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:38:38,662 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:38,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:38,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1562834264, now seen corresponding path program 1 times [2024-12-02 13:38:38,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:38,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446170414] [2024-12-02 13:38:38,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:38,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:38,699 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 13:38:38,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:38,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446170414] [2024-12-02 13:38:38,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446170414] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:38,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:38,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 13:38:38,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304620631] [2024-12-02 13:38:38,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:38,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:38:38,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:38,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:38:38,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:38:38,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-12-02 13:38:38,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:38,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:38,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-12-02 13:38:38,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:38,928 INFO L124 PetriNetUnfolderBase]: 1935/2981 cut-off events. [2024-12-02 13:38:38,928 INFO L125 PetriNetUnfolderBase]: For 412/412 co-relation queries the response was YES. [2024-12-02 13:38:38,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6246 conditions, 2981 events. 1935/2981 cut-off events. For 412/412 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14272 event pairs, 695 based on Foata normal form. 77/2499 useless extension candidates. Maximal degree in co-relation 5993. Up to 2082 conditions per place. [2024-12-02 13:38:38,938 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 57 selfloop transitions, 2 changer transitions 3/68 dead transitions. [2024-12-02 13:38:38,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 68 transitions, 338 flow [2024-12-02 13:38:38,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:38:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:38:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-12-02 13:38:38,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-12-02 13:38:38,940 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 176 flow. Second operand 3 states and 96 transitions. [2024-12-02 13:38:38,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 68 transitions, 338 flow [2024-12-02 13:38:38,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 13:38:38,943 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 165 flow [2024-12-02 13:38:38,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-12-02 13:38:38,944 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2024-12-02 13:38:38,944 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 165 flow [2024-12-02 13:38:38,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:38,944 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:38,944 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:38,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 13:38:38,944 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:38,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:38,945 INFO L85 PathProgramCache]: Analyzing trace with hash 639737360, now seen corresponding path program 1 times [2024-12-02 13:38:38,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:38,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431680378] [2024-12-02 13:38:38,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:38,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 13:38:38,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:38,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431680378] [2024-12-02 13:38:38,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431680378] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:38,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:38,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:38:38,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241404168] [2024-12-02 13:38:38,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:38,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:38:38,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:38,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:38:38,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:38:38,988 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-12-02 13:38:38,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 13:38:38,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:38,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-12-02 13:38:38,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:39,191 INFO L124 PetriNetUnfolderBase]: 1664/2561 cut-off events. [2024-12-02 13:38:39,191 INFO L125 PetriNetUnfolderBase]: For 498/498 co-relation queries the response was YES. [2024-12-02 13:38:39,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5766 conditions, 2561 events. 1664/2561 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11708 event pairs, 717 based on Foata normal form. 18/2226 useless extension candidates. Maximal degree in co-relation 5730. Up to 2249 conditions per place. [2024-12-02 13:38:39,201 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 52 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2024-12-02 13:38:39,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 301 flow [2024-12-02 13:38:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:38:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:38:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-12-02 13:38:39,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-12-02 13:38:39,203 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 165 flow. Second operand 3 states and 89 transitions. [2024-12-02 13:38:39,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 301 flow [2024-12-02 13:38:39,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 295 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-12-02 13:38:39,204 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 182 flow [2024-12-02 13:38:39,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-12-02 13:38:39,205 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2024-12-02 13:38:39,205 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 182 flow [2024-12-02 13:38:39,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 13:38:39,206 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:39,206 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:39,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 13:38:39,206 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:39,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:39,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2104842751, now seen corresponding path program 1 times [2024-12-02 13:38:39,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:39,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516539140] [2024-12-02 13:38:39,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:39,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:38:39,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:39,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516539140] [2024-12-02 13:38:39,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516539140] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:39,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:39,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:38:39,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183677556] [2024-12-02 13:38:39,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:39,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:38:39,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:39,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:38:39,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:38:39,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:38:39,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 182 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 13:38:39,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:39,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:38:39,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:39,469 INFO L124 PetriNetUnfolderBase]: 1256/1961 cut-off events. [2024-12-02 13:38:39,470 INFO L125 PetriNetUnfolderBase]: For 990/990 co-relation queries the response was YES. [2024-12-02 13:38:39,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 1961 events. 1256/1961 cut-off events. For 990/990 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8603 event pairs, 929 based on Foata normal form. 0/1815 useless extension candidates. Maximal degree in co-relation 4695. Up to 1767 conditions per place. [2024-12-02 13:38:39,477 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 42 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2024-12-02 13:38:39,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 266 flow [2024-12-02 13:38:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:38:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 13:38:39,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-12-02 13:38:39,478 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-12-02 13:38:39,478 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 182 flow. Second operand 4 states and 84 transitions. [2024-12-02 13:38:39,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 266 flow [2024-12-02 13:38:39,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 253 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-12-02 13:38:39,480 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 169 flow [2024-12-02 13:38:39,480 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-12-02 13:38:39,480 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2024-12-02 13:38:39,481 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 169 flow [2024-12-02 13:38:39,481 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 13:38:39,481 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:39,481 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:39,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:38:39,481 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:39,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:39,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1097813506, now seen corresponding path program 1 times [2024-12-02 13:38:39,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:39,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919560515] [2024-12-02 13:38:39,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:39,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:38:39,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:39,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919560515] [2024-12-02 13:38:39,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919560515] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:39,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:39,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:38:39,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257845625] [2024-12-02 13:38:39,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:39,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:38:39,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:39,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:38:39,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:38:39,563 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-12-02 13:38:39,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 13:38:39,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:39,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-12-02 13:38:39,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:39,786 INFO L124 PetriNetUnfolderBase]: 1497/2359 cut-off events. [2024-12-02 13:38:39,786 INFO L125 PetriNetUnfolderBase]: For 478/478 co-relation queries the response was YES. [2024-12-02 13:38:39,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5296 conditions, 2359 events. 1497/2359 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 10593 event pairs, 1131 based on Foata normal form. 64/2279 useless extension candidates. Maximal degree in co-relation 5259. Up to 1777 conditions per place. [2024-12-02 13:38:39,794 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 41 selfloop transitions, 3 changer transitions 19/69 dead transitions. [2024-12-02 13:38:39,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 345 flow [2024-12-02 13:38:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:38:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 13:38:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-12-02 13:38:39,795 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4475806451612903 [2024-12-02 13:38:39,795 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 169 flow. Second operand 4 states and 111 transitions. [2024-12-02 13:38:39,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 345 flow [2024-12-02 13:38:39,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 13:38:39,797 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 169 flow [2024-12-02 13:38:39,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-12-02 13:38:39,798 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2024-12-02 13:38:39,798 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 169 flow [2024-12-02 13:38:39,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 13:38:39,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:39,798 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:39,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 13:38:39,798 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:39,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:39,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2074460432, now seen corresponding path program 1 times [2024-12-02 13:38:39,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:39,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378428453] [2024-12-02 13:38:39,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:39,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:38:39,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:39,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378428453] [2024-12-02 13:38:39,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378428453] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:39,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455882054] [2024-12-02 13:38:39,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:39,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:39,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:39,998 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:39,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:38:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:40,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 13:38:40,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:38:40,175 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:38:40,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455882054] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:40,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:38:40,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-12-02 13:38:40,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366218097] [2024-12-02 13:38:40,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:40,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:38:40,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:40,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:38:40,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:38:40,193 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-12-02 13:38:40,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 13:38:40,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:40,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-12-02 13:38:40,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:40,362 INFO L124 PetriNetUnfolderBase]: 901/1442 cut-off events. [2024-12-02 13:38:40,362 INFO L125 PetriNetUnfolderBase]: For 379/379 co-relation queries the response was YES. [2024-12-02 13:38:40,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3239 conditions, 1442 events. 901/1442 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6076 event pairs, 653 based on Foata normal form. 97/1463 useless extension candidates. Maximal degree in co-relation 3200. Up to 1270 conditions per place. [2024-12-02 13:38:40,367 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 39 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-12-02 13:38:40,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 48 transitions, 245 flow [2024-12-02 13:38:40,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:38:40,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 13:38:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-12-02 13:38:40,368 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-12-02 13:38:40,368 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 169 flow. Second operand 4 states and 90 transitions. [2024-12-02 13:38:40,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 48 transitions, 245 flow [2024-12-02 13:38:40,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 48 transitions, 240 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-12-02 13:38:40,369 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 162 flow [2024-12-02 13:38:40,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-12-02 13:38:40,370 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2024-12-02 13:38:40,370 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 162 flow [2024-12-02 13:38:40,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 13:38:40,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:40,370 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, 1, 1, 1] [2024-12-02 13:38:40,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 13:38:40,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:40,571 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:40,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:40,571 INFO L85 PathProgramCache]: Analyzing trace with hash 154104667, now seen corresponding path program 1 times [2024-12-02 13:38:40,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:40,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118653614] [2024-12-02 13:38:40,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:40,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:38:41,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:41,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118653614] [2024-12-02 13:38:41,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118653614] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:41,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:41,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:38:41,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561326278] [2024-12-02 13:38:41,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:41,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:41,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:41,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:41,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:41,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:38:41,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 162 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:41,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:41,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:38:41,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:42,087 INFO L124 PetriNetUnfolderBase]: 1303/2122 cut-off events. [2024-12-02 13:38:42,087 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-12-02 13:38:42,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 2122 events. 1303/2122 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 10331 event pairs, 135 based on Foata normal form. 1/2071 useless extension candidates. Maximal degree in co-relation 4667. Up to 1406 conditions per place. [2024-12-02 13:38:42,093 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 106 selfloop transitions, 25 changer transitions 3/139 dead transitions. [2024-12-02 13:38:42,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 139 transitions, 677 flow [2024-12-02 13:38:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:38:42,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 13:38:42,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 283 transitions. [2024-12-02 13:38:42,095 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3803763440860215 [2024-12-02 13:38:42,095 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 162 flow. Second operand 12 states and 283 transitions. [2024-12-02 13:38:42,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 139 transitions, 677 flow [2024-12-02 13:38:42,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 139 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 13:38:42,097 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 293 flow [2024-12-02 13:38:42,097 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=293, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2024-12-02 13:38:42,098 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 12 predicate places. [2024-12-02 13:38:42,098 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 293 flow [2024-12-02 13:38:42,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:42,098 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:42,098 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, 1, 1, 1] [2024-12-02 13:38:42,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 13:38:42,098 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:42,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:42,099 INFO L85 PathProgramCache]: Analyzing trace with hash 987067271, now seen corresponding path program 2 times [2024-12-02 13:38:42,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:42,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936209471] [2024-12-02 13:38:42,099 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:38:42,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:42,147 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:38:42,147 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:38:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:38:42,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:42,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936209471] [2024-12-02 13:38:42,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936209471] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:42,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:42,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:38:42,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707338792] [2024-12-02 13:38:42,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:42,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:42,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:42,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:42,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:42,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:38:42,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 293 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:42,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:42,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:38:42,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:43,555 INFO L124 PetriNetUnfolderBase]: 1494/2431 cut-off events. [2024-12-02 13:38:43,555 INFO L125 PetriNetUnfolderBase]: For 1515/1515 co-relation queries the response was YES. [2024-12-02 13:38:43,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6636 conditions, 2431 events. 1494/2431 cut-off events. For 1515/1515 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 12084 event pairs, 367 based on Foata normal form. 1/2371 useless extension candidates. Maximal degree in co-relation 6592. Up to 1744 conditions per place. [2024-12-02 13:38:43,564 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 111 selfloop transitions, 35 changer transitions 3/154 dead transitions. [2024-12-02 13:38:43,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 154 transitions, 904 flow [2024-12-02 13:38:43,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:38:43,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:38:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 267 transitions. [2024-12-02 13:38:43,566 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3914956011730205 [2024-12-02 13:38:43,566 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 293 flow. Second operand 11 states and 267 transitions. [2024-12-02 13:38:43,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 154 transitions, 904 flow [2024-12-02 13:38:43,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 154 transitions, 899 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 13:38:43,572 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 536 flow [2024-12-02 13:38:43,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=536, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2024-12-02 13:38:43,573 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 28 predicate places. [2024-12-02 13:38:43,573 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 536 flow [2024-12-02 13:38:43,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:43,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:43,573 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, 1, 1, 1] [2024-12-02 13:38:43,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 13:38:43,573 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:43,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:43,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1570957239, now seen corresponding path program 3 times [2024-12-02 13:38:43,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:43,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941558677] [2024-12-02 13:38:43,574 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 13:38:43,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:43,618 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 13:38:43,618 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:38:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:38:44,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:44,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941558677] [2024-12-02 13:38:44,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941558677] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:44,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:44,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:38:44,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67389249] [2024-12-02 13:38:44,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:44,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:44,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:44,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:44,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:44,434 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:38:44,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 536 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:44,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:44,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:38:44,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:45,031 INFO L124 PetriNetUnfolderBase]: 1661/2741 cut-off events. [2024-12-02 13:38:45,031 INFO L125 PetriNetUnfolderBase]: For 3653/3653 co-relation queries the response was YES. [2024-12-02 13:38:45,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8527 conditions, 2741 events. 1661/2741 cut-off events. For 3653/3653 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14418 event pairs, 302 based on Foata normal form. 1/2663 useless extension candidates. Maximal degree in co-relation 8474. Up to 1784 conditions per place. [2024-12-02 13:38:45,046 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 122 selfloop transitions, 43 changer transitions 3/173 dead transitions. [2024-12-02 13:38:45,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 173 transitions, 1183 flow [2024-12-02 13:38:45,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:38:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 13:38:45,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 287 transitions. [2024-12-02 13:38:45,048 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.385752688172043 [2024-12-02 13:38:45,048 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 536 flow. Second operand 12 states and 287 transitions. [2024-12-02 13:38:45,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 173 transitions, 1183 flow [2024-12-02 13:38:45,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 173 transitions, 1167 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-12-02 13:38:45,062 INFO L231 Difference]: Finished difference. Result has 101 places, 102 transitions, 694 flow [2024-12-02 13:38:45,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=694, PETRI_PLACES=101, PETRI_TRANSITIONS=102} [2024-12-02 13:38:45,063 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 42 predicate places. [2024-12-02 13:38:45,063 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 102 transitions, 694 flow [2024-12-02 13:38:45,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:45,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:45,063 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, 1, 1, 1] [2024-12-02 13:38:45,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 13:38:45,063 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:45,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:45,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1541366859, now seen corresponding path program 4 times [2024-12-02 13:38:45,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:45,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988568172] [2024-12-02 13:38:45,064 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 13:38:45,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:45,093 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 13:38:45,093 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:38:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:38:45,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:45,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988568172] [2024-12-02 13:38:45,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988568172] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:45,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:45,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:38:45,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277871117] [2024-12-02 13:38:45,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:45,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:45,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:45,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:45,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:45,705 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:38:45,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 102 transitions, 694 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 13:38:45,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:45,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:38:45,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:46,355 INFO L124 PetriNetUnfolderBase]: 1963/3216 cut-off events. [2024-12-02 13:38:46,355 INFO L125 PetriNetUnfolderBase]: For 6245/6245 co-relation queries the response was YES. [2024-12-02 13:38:46,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10642 conditions, 3216 events. 1963/3216 cut-off events. For 6245/6245 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 17391 event pairs, 492 based on Foata normal form. 1/3127 useless extension candidates. Maximal degree in co-relation 10584. Up to 2363 conditions per place. [2024-12-02 13:38:46,367 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 131 selfloop transitions, 39 changer transitions 3/177 dead transitions. [2024-12-02 13:38:46,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 177 transitions, 1349 flow [2024-12-02 13:38:46,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:38:46,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 13:38:46,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 273 transitions. [2024-12-02 13:38:46,369 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-12-02 13:38:46,369 INFO L175 Difference]: Start difference. First operand has 101 places, 102 transitions, 694 flow. Second operand 12 states and 273 transitions. [2024-12-02 13:38:46,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 177 transitions, 1349 flow [2024-12-02 13:38:46,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 177 transitions, 1271 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-12-02 13:38:46,385 INFO L231 Difference]: Finished difference. Result has 109 places, 108 transitions, 769 flow [2024-12-02 13:38:46,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=769, PETRI_PLACES=109, PETRI_TRANSITIONS=108} [2024-12-02 13:38:46,386 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 50 predicate places. [2024-12-02 13:38:46,386 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 108 transitions, 769 flow [2024-12-02 13:38:46,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 13:38:46,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:46,386 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, 1, 1, 1] [2024-12-02 13:38:46,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 13:38:46,386 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:46,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:46,387 INFO L85 PathProgramCache]: Analyzing trace with hash 683730863, now seen corresponding path program 5 times [2024-12-02 13:38:46,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:46,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864373204] [2024-12-02 13:38:46,387 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 13:38:46,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:46,424 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 13:38:46,424 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:38:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:38:47,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:47,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864373204] [2024-12-02 13:38:47,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864373204] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:47,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:47,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:38:47,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263420672] [2024-12-02 13:38:47,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:47,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:47,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:47,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:47,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:47,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:38:47,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 108 transitions, 769 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:47,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:47,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:38:47,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:47,686 INFO L124 PetriNetUnfolderBase]: 1765/2942 cut-off events. [2024-12-02 13:38:47,686 INFO L125 PetriNetUnfolderBase]: For 7364/7364 co-relation queries the response was YES. [2024-12-02 13:38:47,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10212 conditions, 2942 events. 1765/2942 cut-off events. For 7364/7364 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15972 event pairs, 420 based on Foata normal form. 1/2859 useless extension candidates. Maximal degree in co-relation 10150. Up to 2205 conditions per place. [2024-12-02 13:38:47,699 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 125 selfloop transitions, 38 changer transitions 3/171 dead transitions. [2024-12-02 13:38:47,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 171 transitions, 1371 flow [2024-12-02 13:38:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:38:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 13:38:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 274 transitions. [2024-12-02 13:38:47,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-12-02 13:38:47,701 INFO L175 Difference]: Start difference. First operand has 109 places, 108 transitions, 769 flow. Second operand 12 states and 274 transitions. [2024-12-02 13:38:47,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 171 transitions, 1371 flow [2024-12-02 13:38:47,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 171 transitions, 1279 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-12-02 13:38:47,715 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 798 flow [2024-12-02 13:38:47,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=798, PETRI_PLACES=115, PETRI_TRANSITIONS=111} [2024-12-02 13:38:47,716 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 56 predicate places. [2024-12-02 13:38:47,716 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 798 flow [2024-12-02 13:38:47,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:47,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:47,716 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, 1, 1, 1] [2024-12-02 13:38:47,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 13:38:47,717 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:47,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:47,717 INFO L85 PathProgramCache]: Analyzing trace with hash -736007861, now seen corresponding path program 6 times [2024-12-02 13:38:47,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:47,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844223051] [2024-12-02 13:38:47,717 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 13:38:47,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:47,745 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 13:38:47,745 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:38:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:38:48,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:48,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844223051] [2024-12-02 13:38:48,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844223051] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:48,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:48,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:38:48,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633667508] [2024-12-02 13:38:48,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:48,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:48,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:48,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:48,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:48,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:38:48,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 798 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:48,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:48,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:38:48,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:49,063 INFO L124 PetriNetUnfolderBase]: 1901/3178 cut-off events. [2024-12-02 13:38:49,063 INFO L125 PetriNetUnfolderBase]: For 8688/8688 co-relation queries the response was YES. [2024-12-02 13:38:49,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11198 conditions, 3178 events. 1901/3178 cut-off events. For 8688/8688 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 17725 event pairs, 603 based on Foata normal form. 1/3084 useless extension candidates. Maximal degree in co-relation 11133. Up to 2486 conditions per place. [2024-12-02 13:38:49,078 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 132 selfloop transitions, 36 changer transitions 3/176 dead transitions. [2024-12-02 13:38:49,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 176 transitions, 1495 flow [2024-12-02 13:38:49,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:38:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:38:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 258 transitions. [2024-12-02 13:38:49,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-12-02 13:38:49,079 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 798 flow. Second operand 11 states and 258 transitions. [2024-12-02 13:38:49,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 176 transitions, 1495 flow [2024-12-02 13:38:49,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 176 transitions, 1407 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-12-02 13:38:49,113 INFO L231 Difference]: Finished difference. Result has 121 places, 122 transitions, 943 flow [2024-12-02 13:38:49,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=943, PETRI_PLACES=121, PETRI_TRANSITIONS=122} [2024-12-02 13:38:49,114 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 62 predicate places. [2024-12-02 13:38:49,114 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 122 transitions, 943 flow [2024-12-02 13:38:49,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:49,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:49,115 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, 1, 1, 1] [2024-12-02 13:38:49,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 13:38:49,115 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:49,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:49,115 INFO L85 PathProgramCache]: Analyzing trace with hash 440013493, now seen corresponding path program 7 times [2024-12-02 13:38:49,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:49,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319039525] [2024-12-02 13:38:49,116 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 13:38:49,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:38:49,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:49,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319039525] [2024-12-02 13:38:49,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319039525] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:49,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:49,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:38:49,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636363851] [2024-12-02 13:38:49,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:49,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:49,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:49,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:49,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:49,880 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:38:49,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 122 transitions, 943 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:49,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:49,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:38:49,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:50,517 INFO L124 PetriNetUnfolderBase]: 2027/3410 cut-off events. [2024-12-02 13:38:50,517 INFO L125 PetriNetUnfolderBase]: For 13454/13454 co-relation queries the response was YES. [2024-12-02 13:38:50,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12631 conditions, 3410 events. 2027/3410 cut-off events. For 13454/13454 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19441 event pairs, 600 based on Foata normal form. 1/3310 useless extension candidates. Maximal degree in co-relation 12561. Up to 2677 conditions per place. [2024-12-02 13:38:50,532 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 141 selfloop transitions, 36 changer transitions 3/185 dead transitions. [2024-12-02 13:38:50,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 185 transitions, 1676 flow [2024-12-02 13:38:50,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:38:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:38:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 255 transitions. [2024-12-02 13:38:50,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37390029325513197 [2024-12-02 13:38:50,534 INFO L175 Difference]: Start difference. First operand has 121 places, 122 transitions, 943 flow. Second operand 11 states and 255 transitions. [2024-12-02 13:38:50,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 185 transitions, 1676 flow [2024-12-02 13:38:50,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 185 transitions, 1589 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-12-02 13:38:50,562 INFO L231 Difference]: Finished difference. Result has 133 places, 131 transitions, 1089 flow [2024-12-02 13:38:50,562 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1089, PETRI_PLACES=133, PETRI_TRANSITIONS=131} [2024-12-02 13:38:50,563 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 74 predicate places. [2024-12-02 13:38:50,563 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 131 transitions, 1089 flow [2024-12-02 13:38:50,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:50,563 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:50,563 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, 1, 1, 1] [2024-12-02 13:38:50,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 13:38:50,563 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:50,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash 831967917, now seen corresponding path program 8 times [2024-12-02 13:38:50,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:50,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114940750] [2024-12-02 13:38:50,564 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:38:50,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:50,594 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:38:50,594 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:38:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:38:51,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:51,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114940750] [2024-12-02 13:38:51,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114940750] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:51,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:51,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:38:51,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763102399] [2024-12-02 13:38:51,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:51,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:51,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:51,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:51,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:51,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:38:51,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 131 transitions, 1089 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:51,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:51,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:38:51,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:51,749 INFO L124 PetriNetUnfolderBase]: 2159/3637 cut-off events. [2024-12-02 13:38:51,749 INFO L125 PetriNetUnfolderBase]: For 21349/21349 co-relation queries the response was YES. [2024-12-02 13:38:51,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14398 conditions, 3637 events. 2159/3637 cut-off events. For 21349/21349 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 21227 event pairs, 673 based on Foata normal form. 1/3541 useless extension candidates. Maximal degree in co-relation 14323. Up to 2881 conditions per place. [2024-12-02 13:38:51,770 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 152 selfloop transitions, 36 changer transitions 3/196 dead transitions. [2024-12-02 13:38:51,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 196 transitions, 1880 flow [2024-12-02 13:38:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:38:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:38:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 257 transitions. [2024-12-02 13:38:51,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37683284457478006 [2024-12-02 13:38:51,772 INFO L175 Difference]: Start difference. First operand has 133 places, 131 transitions, 1089 flow. Second operand 11 states and 257 transitions. [2024-12-02 13:38:51,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 196 transitions, 1880 flow [2024-12-02 13:38:51,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 196 transitions, 1752 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-12-02 13:38:51,825 INFO L231 Difference]: Finished difference. Result has 141 places, 140 transitions, 1179 flow [2024-12-02 13:38:51,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1179, PETRI_PLACES=141, PETRI_TRANSITIONS=140} [2024-12-02 13:38:51,825 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 82 predicate places. [2024-12-02 13:38:51,825 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 140 transitions, 1179 flow [2024-12-02 13:38:51,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:51,825 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:51,826 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, 1, 1, 1] [2024-12-02 13:38:51,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 13:38:51,826 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:51,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:51,826 INFO L85 PathProgramCache]: Analyzing trace with hash -315121537, now seen corresponding path program 9 times [2024-12-02 13:38:51,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:51,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657950305] [2024-12-02 13:38:51,826 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 13:38:51,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:51,849 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 13:38:51,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:38:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:38:52,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:52,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657950305] [2024-12-02 13:38:52,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657950305] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:52,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:52,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:38:52,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574039425] [2024-12-02 13:38:52,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:52,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:52,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:52,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:52,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:52,352 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:38:52,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 140 transitions, 1179 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:52,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:52,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:38:52,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:53,157 INFO L124 PetriNetUnfolderBase]: 2346/3945 cut-off events. [2024-12-02 13:38:53,157 INFO L125 PetriNetUnfolderBase]: For 28216/28216 co-relation queries the response was YES. [2024-12-02 13:38:53,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16332 conditions, 3945 events. 2346/3945 cut-off events. For 28216/28216 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 23456 event pairs, 725 based on Foata normal form. 1/3837 useless extension candidates. Maximal degree in co-relation 16253. Up to 3093 conditions per place. [2024-12-02 13:38:53,177 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 166 selfloop transitions, 39 changer transitions 3/213 dead transitions. [2024-12-02 13:38:53,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 213 transitions, 2077 flow [2024-12-02 13:38:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:38:53,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:38:53,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2024-12-02 13:38:53,179 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-12-02 13:38:53,179 INFO L175 Difference]: Start difference. First operand has 141 places, 140 transitions, 1179 flow. Second operand 11 states and 268 transitions. [2024-12-02 13:38:53,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 213 transitions, 2077 flow [2024-12-02 13:38:53,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 213 transitions, 1943 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-12-02 13:38:53,222 INFO L231 Difference]: Finished difference. Result has 150 places, 149 transitions, 1314 flow [2024-12-02 13:38:53,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1314, PETRI_PLACES=150, PETRI_TRANSITIONS=149} [2024-12-02 13:38:53,223 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 91 predicate places. [2024-12-02 13:38:53,223 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 149 transitions, 1314 flow [2024-12-02 13:38:53,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:53,223 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:53,223 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, 1, 1, 1] [2024-12-02 13:38:53,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 13:38:53,223 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:53,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:53,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1968839951, now seen corresponding path program 10 times [2024-12-02 13:38:53,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:53,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571677279] [2024-12-02 13:38:53,224 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 13:38:53,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:53,248 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 13:38:53,248 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:38:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:38:53,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:53,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571677279] [2024-12-02 13:38:53,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571677279] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:53,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:53,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:38:53,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251657706] [2024-12-02 13:38:53,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:53,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:53,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:53,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:53,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:38:53,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 149 transitions, 1314 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 13:38:53,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:53,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:38:53,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:54,398 INFO L124 PetriNetUnfolderBase]: 2605/4325 cut-off events. [2024-12-02 13:38:54,398 INFO L125 PetriNetUnfolderBase]: For 34976/34976 co-relation queries the response was YES. [2024-12-02 13:38:54,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18211 conditions, 4325 events. 2605/4325 cut-off events. For 34976/34976 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 25771 event pairs, 921 based on Foata normal form. 1/4213 useless extension candidates. Maximal degree in co-relation 18127. Up to 3605 conditions per place. [2024-12-02 13:38:54,428 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 158 selfloop transitions, 36 changer transitions 4/202 dead transitions. [2024-12-02 13:38:54,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 202 transitions, 2010 flow [2024-12-02 13:38:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:38:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:38:54,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 238 transitions. [2024-12-02 13:38:54,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-12-02 13:38:54,429 INFO L175 Difference]: Start difference. First operand has 150 places, 149 transitions, 1314 flow. Second operand 11 states and 238 transitions. [2024-12-02 13:38:54,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 202 transitions, 2010 flow [2024-12-02 13:38:54,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 202 transitions, 1870 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-12-02 13:38:54,494 INFO L231 Difference]: Finished difference. Result has 158 places, 155 transitions, 1343 flow [2024-12-02 13:38:54,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1343, PETRI_PLACES=158, PETRI_TRANSITIONS=155} [2024-12-02 13:38:54,495 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 99 predicate places. [2024-12-02 13:38:54,495 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 155 transitions, 1343 flow [2024-12-02 13:38:54,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 13:38:54,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:54,495 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, 1, 1, 1] [2024-12-02 13:38:54,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 13:38:54,496 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:54,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:54,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1822795627, now seen corresponding path program 11 times [2024-12-02 13:38:54,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:54,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280717948] [2024-12-02 13:38:54,497 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 13:38:54,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:54,518 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 13:38:54,518 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:38:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:38:54,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:54,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280717948] [2024-12-02 13:38:54,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280717948] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:54,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:54,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:38:54,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731980772] [2024-12-02 13:38:54,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:54,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:54,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:54,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:54,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:55,046 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:38:55,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 155 transitions, 1343 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:55,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:55,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:38:55,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:55,882 INFO L124 PetriNetUnfolderBase]: 2558/4297 cut-off events. [2024-12-02 13:38:55,882 INFO L125 PetriNetUnfolderBase]: For 34211/34211 co-relation queries the response was YES. [2024-12-02 13:38:55,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18185 conditions, 4297 events. 2558/4297 cut-off events. For 34211/34211 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 26231 event pairs, 855 based on Foata normal form. 1/4195 useless extension candidates. Maximal degree in co-relation 18096. Up to 3387 conditions per place. [2024-12-02 13:38:55,909 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 167 selfloop transitions, 42 changer transitions 3/217 dead transitions. [2024-12-02 13:38:55,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 217 transitions, 2215 flow [2024-12-02 13:38:55,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:38:55,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:38:55,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 258 transitions. [2024-12-02 13:38:55,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-12-02 13:38:55,911 INFO L175 Difference]: Start difference. First operand has 158 places, 155 transitions, 1343 flow. Second operand 11 states and 258 transitions. [2024-12-02 13:38:55,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 217 transitions, 2215 flow [2024-12-02 13:38:55,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 217 transitions, 2105 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-12-02 13:38:55,995 INFO L231 Difference]: Finished difference. Result has 165 places, 162 transitions, 1508 flow [2024-12-02 13:38:55,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1508, PETRI_PLACES=165, PETRI_TRANSITIONS=162} [2024-12-02 13:38:55,995 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 106 predicate places. [2024-12-02 13:38:55,995 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 162 transitions, 1508 flow [2024-12-02 13:38:55,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:55,996 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:55,996 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, 1, 1, 1] [2024-12-02 13:38:55,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 13:38:55,996 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:55,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:55,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1035560727, now seen corresponding path program 12 times [2024-12-02 13:38:55,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:55,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392306382] [2024-12-02 13:38:55,997 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 13:38:55,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:56,016 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 13:38:56,016 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:38:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:38:56,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:56,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392306382] [2024-12-02 13:38:56,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392306382] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:56,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:56,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:38:56,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031566134] [2024-12-02 13:38:56,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:56,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:56,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:56,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:56,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:56,384 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:38:56,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 162 transitions, 1508 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:56,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:56,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:38:56,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:57,238 INFO L124 PetriNetUnfolderBase]: 2558/4291 cut-off events. [2024-12-02 13:38:57,238 INFO L125 PetriNetUnfolderBase]: For 41122/41130 co-relation queries the response was YES. [2024-12-02 13:38:57,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18807 conditions, 4291 events. 2558/4291 cut-off events. For 41122/41130 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26232 event pairs, 862 based on Foata normal form. 3/4193 useless extension candidates. Maximal degree in co-relation 18714. Up to 3425 conditions per place. [2024-12-02 13:38:57,263 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 175 selfloop transitions, 41 changer transitions 5/226 dead transitions. [2024-12-02 13:38:57,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 226 transitions, 2300 flow [2024-12-02 13:38:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:38:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:38:57,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-12-02 13:38:57,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-12-02 13:38:57,265 INFO L175 Difference]: Start difference. First operand has 165 places, 162 transitions, 1508 flow. Second operand 11 states and 266 transitions. [2024-12-02 13:38:57,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 226 transitions, 2300 flow [2024-12-02 13:38:57,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 226 transitions, 2132 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-12-02 13:38:57,351 INFO L231 Difference]: Finished difference. Result has 171 places, 166 transitions, 1473 flow [2024-12-02 13:38:57,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1473, PETRI_PLACES=171, PETRI_TRANSITIONS=166} [2024-12-02 13:38:57,351 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 112 predicate places. [2024-12-02 13:38:57,351 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 166 transitions, 1473 flow [2024-12-02 13:38:57,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:57,351 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:57,351 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, 1, 1, 1] [2024-12-02 13:38:57,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 13:38:57,352 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:57,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:57,352 INFO L85 PathProgramCache]: Analyzing trace with hash 883643887, now seen corresponding path program 13 times [2024-12-02 13:38:57,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:57,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144820109] [2024-12-02 13:38:57,352 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 13:38:57,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:38:57,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:57,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144820109] [2024-12-02 13:38:57,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144820109] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:57,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:57,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:38:57,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375420232] [2024-12-02 13:38:57,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:57,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:57,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:57,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:57,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:57,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:38:57,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 166 transitions, 1473 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:57,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:57,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:38:57,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:38:58,601 INFO L124 PetriNetUnfolderBase]: 2558/4293 cut-off events. [2024-12-02 13:38:58,602 INFO L125 PetriNetUnfolderBase]: For 35618/35618 co-relation queries the response was YES. [2024-12-02 13:38:58,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18300 conditions, 4293 events. 2558/4293 cut-off events. For 35618/35618 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 26136 event pairs, 891 based on Foata normal form. 1/4191 useless extension candidates. Maximal degree in co-relation 18204. Up to 3541 conditions per place. [2024-12-02 13:38:58,632 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 170 selfloop transitions, 41 changer transitions 4/220 dead transitions. [2024-12-02 13:38:58,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 220 transitions, 2194 flow [2024-12-02 13:38:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:38:58,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:38:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 253 transitions. [2024-12-02 13:38:58,634 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-12-02 13:38:58,634 INFO L175 Difference]: Start difference. First operand has 171 places, 166 transitions, 1473 flow. Second operand 11 states and 253 transitions. [2024-12-02 13:38:58,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 220 transitions, 2194 flow [2024-12-02 13:38:58,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 220 transitions, 2087 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-12-02 13:38:58,712 INFO L231 Difference]: Finished difference. Result has 176 places, 170 transitions, 1512 flow [2024-12-02 13:38:58,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1512, PETRI_PLACES=176, PETRI_TRANSITIONS=170} [2024-12-02 13:38:58,713 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 117 predicate places. [2024-12-02 13:38:58,713 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 170 transitions, 1512 flow [2024-12-02 13:38:58,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:58,713 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:38:58,713 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, 1, 1, 1] [2024-12-02 13:38:58,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 13:38:58,713 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:38:58,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:58,714 INFO L85 PathProgramCache]: Analyzing trace with hash 45605427, now seen corresponding path program 14 times [2024-12-02 13:38:58,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:58,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588273288] [2024-12-02 13:38:58,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:38:58,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:58,733 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:38:58,733 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:38:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:38:59,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:59,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588273288] [2024-12-02 13:38:59,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588273288] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:38:59,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:38:59,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:38:59,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705230187] [2024-12-02 13:38:59,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:38:59,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:38:59,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:59,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:38:59,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:38:59,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:38:59,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 170 transitions, 1512 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:38:59,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:38:59,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:38:59,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:00,028 INFO L124 PetriNetUnfolderBase]: 2594/4360 cut-off events. [2024-12-02 13:39:00,028 INFO L125 PetriNetUnfolderBase]: For 35838/35838 co-relation queries the response was YES. [2024-12-02 13:39:00,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18459 conditions, 4360 events. 2594/4360 cut-off events. For 35838/35838 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 26726 event pairs, 953 based on Foata normal form. 1/4259 useless extension candidates. Maximal degree in co-relation 18360. Up to 3675 conditions per place. [2024-12-02 13:39:00,052 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 174 selfloop transitions, 37 changer transitions 3/219 dead transitions. [2024-12-02 13:39:00,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 219 transitions, 2208 flow [2024-12-02 13:39:00,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:00,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:00,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 247 transitions. [2024-12-02 13:39:00,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3621700879765396 [2024-12-02 13:39:00,054 INFO L175 Difference]: Start difference. First operand has 176 places, 170 transitions, 1512 flow. Second operand 11 states and 247 transitions. [2024-12-02 13:39:00,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 219 transitions, 2208 flow [2024-12-02 13:39:00,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 219 transitions, 2084 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-12-02 13:39:00,118 INFO L231 Difference]: Finished difference. Result has 180 places, 173 transitions, 1514 flow [2024-12-02 13:39:00,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1514, PETRI_PLACES=180, PETRI_TRANSITIONS=173} [2024-12-02 13:39:00,119 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 121 predicate places. [2024-12-02 13:39:00,119 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 173 transitions, 1514 flow [2024-12-02 13:39:00,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:00,119 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:00,119 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, 1, 1, 1] [2024-12-02 13:39:00,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 13:39:00,119 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:00,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:00,120 INFO L85 PathProgramCache]: Analyzing trace with hash -610316069, now seen corresponding path program 15 times [2024-12-02 13:39:00,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:00,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966332613] [2024-12-02 13:39:00,120 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 13:39:00,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:00,137 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 13:39:00,138 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:00,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:00,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966332613] [2024-12-02 13:39:00,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966332613] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:00,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:00,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:00,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721350412] [2024-12-02 13:39:00,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:00,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:00,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:00,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:00,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:00,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:00,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 173 transitions, 1514 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:00,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:00,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:00,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:01,306 INFO L124 PetriNetUnfolderBase]: 2594/4368 cut-off events. [2024-12-02 13:39:01,307 INFO L125 PetriNetUnfolderBase]: For 35238/35238 co-relation queries the response was YES. [2024-12-02 13:39:01,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18334 conditions, 4368 events. 2594/4368 cut-off events. For 35238/35238 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 26845 event pairs, 960 based on Foata normal form. 1/4262 useless extension candidates. Maximal degree in co-relation 18233. Up to 3688 conditions per place. [2024-12-02 13:39:01,336 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 176 selfloop transitions, 35 changer transitions 3/219 dead transitions. [2024-12-02 13:39:01,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 219 transitions, 2182 flow [2024-12-02 13:39:01,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:01,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:01,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 244 transitions. [2024-12-02 13:39:01,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-12-02 13:39:01,337 INFO L175 Difference]: Start difference. First operand has 180 places, 173 transitions, 1514 flow. Second operand 11 states and 244 transitions. [2024-12-02 13:39:01,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 219 transitions, 2182 flow [2024-12-02 13:39:01,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 219 transitions, 2074 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-12-02 13:39:01,408 INFO L231 Difference]: Finished difference. Result has 184 places, 175 transitions, 1502 flow [2024-12-02 13:39:01,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1502, PETRI_PLACES=184, PETRI_TRANSITIONS=175} [2024-12-02 13:39:01,409 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 125 predicate places. [2024-12-02 13:39:01,409 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 175 transitions, 1502 flow [2024-12-02 13:39:01,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:01,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:01,409 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, 1, 1, 1] [2024-12-02 13:39:01,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 13:39:01,409 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:01,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:01,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2075951581, now seen corresponding path program 16 times [2024-12-02 13:39:01,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:01,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035669251] [2024-12-02 13:39:01,409 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 13:39:01,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:01,439 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 13:39:01,440 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:01,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:01,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035669251] [2024-12-02 13:39:01,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035669251] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:01,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:01,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:01,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549447288] [2024-12-02 13:39:01,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:01,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:01,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:01,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:01,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:01,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:39:01,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 175 transitions, 1502 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 13:39:01,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:01,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:39:01,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:03,059 INFO L124 PetriNetUnfolderBase]: 3031/5049 cut-off events. [2024-12-02 13:39:03,059 INFO L125 PetriNetUnfolderBase]: For 49112/49112 co-relation queries the response was YES. [2024-12-02 13:39:03,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22062 conditions, 5049 events. 3031/5049 cut-off events. For 49112/49112 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 31670 event pairs, 1080 based on Foata normal form. 1/4934 useless extension candidates. Maximal degree in co-relation 21959. Up to 3965 conditions per place. [2024-12-02 13:39:03,098 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 205 selfloop transitions, 44 changer transitions 3/256 dead transitions. [2024-12-02 13:39:03,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 256 transitions, 2647 flow [2024-12-02 13:39:03,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:39:03,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 13:39:03,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 275 transitions. [2024-12-02 13:39:03,100 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3696236559139785 [2024-12-02 13:39:03,100 INFO L175 Difference]: Start difference. First operand has 184 places, 175 transitions, 1502 flow. Second operand 12 states and 275 transitions. [2024-12-02 13:39:03,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 256 transitions, 2647 flow [2024-12-02 13:39:03,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 256 transitions, 2579 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-12-02 13:39:03,249 INFO L231 Difference]: Finished difference. Result has 191 places, 187 transitions, 1787 flow [2024-12-02 13:39:03,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1787, PETRI_PLACES=191, PETRI_TRANSITIONS=187} [2024-12-02 13:39:03,250 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 132 predicate places. [2024-12-02 13:39:03,250 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 187 transitions, 1787 flow [2024-12-02 13:39:03,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 13:39:03,250 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:03,250 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, 1, 1, 1] [2024-12-02 13:39:03,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 13:39:03,251 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:03,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:03,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1490350639, now seen corresponding path program 17 times [2024-12-02 13:39:03,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:03,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739153599] [2024-12-02 13:39:03,251 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 13:39:03,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:03,283 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 13:39:03,283 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:03,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:03,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739153599] [2024-12-02 13:39:03,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739153599] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:03,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:03,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:03,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923403304] [2024-12-02 13:39:03,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:03,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:03,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:03,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:03,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:03,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:03,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 187 transitions, 1787 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:03,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:03,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:03,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:04,992 INFO L124 PetriNetUnfolderBase]: 3034/5118 cut-off events. [2024-12-02 13:39:04,992 INFO L125 PetriNetUnfolderBase]: For 63555/63555 co-relation queries the response was YES. [2024-12-02 13:39:05,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23970 conditions, 5118 events. 3034/5118 cut-off events. For 63555/63555 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 32976 event pairs, 984 based on Foata normal form. 1/5006 useless extension candidates. Maximal degree in co-relation 23863. Up to 3910 conditions per place. [2024-12-02 13:39:05,034 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 201 selfloop transitions, 54 changer transitions 3/263 dead transitions. [2024-12-02 13:39:05,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 263 transitions, 2994 flow [2024-12-02 13:39:05,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:39:05,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 13:39:05,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 284 transitions. [2024-12-02 13:39:05,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-12-02 13:39:05,035 INFO L175 Difference]: Start difference. First operand has 191 places, 187 transitions, 1787 flow. Second operand 12 states and 284 transitions. [2024-12-02 13:39:05,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 263 transitions, 2994 flow [2024-12-02 13:39:05,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 263 transitions, 2750 flow, removed 105 selfloop flow, removed 5 redundant places. [2024-12-02 13:39:05,167 INFO L231 Difference]: Finished difference. Result has 201 places, 198 transitions, 1958 flow [2024-12-02 13:39:05,167 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1958, PETRI_PLACES=201, PETRI_TRANSITIONS=198} [2024-12-02 13:39:05,168 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 142 predicate places. [2024-12-02 13:39:05,168 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 198 transitions, 1958 flow [2024-12-02 13:39:05,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:05,168 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:05,168 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, 1, 1, 1] [2024-12-02 13:39:05,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 13:39:05,169 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:05,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:05,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1669471445, now seen corresponding path program 18 times [2024-12-02 13:39:05,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:05,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207243097] [2024-12-02 13:39:05,169 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 13:39:05,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:05,192 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 13:39:05,192 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:05,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:05,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207243097] [2024-12-02 13:39:05,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207243097] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:05,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:05,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:05,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045174006] [2024-12-02 13:39:05,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:05,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:05,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:05,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:05,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:05,674 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:05,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 198 transitions, 1958 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:05,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:05,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:05,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:06,623 INFO L124 PetriNetUnfolderBase]: 3130/5282 cut-off events. [2024-12-02 13:39:06,623 INFO L125 PetriNetUnfolderBase]: For 74989/74989 co-relation queries the response was YES. [2024-12-02 13:39:06,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25394 conditions, 5282 events. 3130/5282 cut-off events. For 74989/74989 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 34253 event pairs, 1104 based on Foata normal form. 1/5170 useless extension candidates. Maximal degree in co-relation 25282. Up to 4182 conditions per place. [2024-12-02 13:39:06,728 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 210 selfloop transitions, 49 changer transitions 3/267 dead transitions. [2024-12-02 13:39:06,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 267 transitions, 3048 flow [2024-12-02 13:39:06,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:39:06,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 13:39:06,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 281 transitions. [2024-12-02 13:39:06,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37768817204301075 [2024-12-02 13:39:06,730 INFO L175 Difference]: Start difference. First operand has 201 places, 198 transitions, 1958 flow. Second operand 12 states and 281 transitions. [2024-12-02 13:39:06,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 267 transitions, 3048 flow [2024-12-02 13:39:06,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 267 transitions, 2839 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-12-02 13:39:06,910 INFO L231 Difference]: Finished difference. Result has 208 places, 204 transitions, 2017 flow [2024-12-02 13:39:06,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2017, PETRI_PLACES=208, PETRI_TRANSITIONS=204} [2024-12-02 13:39:06,911 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 149 predicate places. [2024-12-02 13:39:06,911 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 204 transitions, 2017 flow [2024-12-02 13:39:06,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:06,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:06,911 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, 1, 1, 1] [2024-12-02 13:39:06,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 13:39:06,911 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:06,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:06,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1754877227, now seen corresponding path program 19 times [2024-12-02 13:39:06,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:06,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91568323] [2024-12-02 13:39:06,913 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 13:39:06,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:39:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:07,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:07,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91568323] [2024-12-02 13:39:07,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91568323] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:07,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:07,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:07,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739987476] [2024-12-02 13:39:07,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:07,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:07,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:07,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:07,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:07,299 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:07,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 204 transitions, 2017 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:07,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:07,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:07,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:08,517 INFO L124 PetriNetUnfolderBase]: 3130/5290 cut-off events. [2024-12-02 13:39:08,517 INFO L125 PetriNetUnfolderBase]: For 75138/75138 co-relation queries the response was YES. [2024-12-02 13:39:08,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25293 conditions, 5290 events. 3130/5290 cut-off events. For 75138/75138 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 34385 event pairs, 1113 based on Foata normal form. 1/5178 useless extension candidates. Maximal degree in co-relation 25178. Up to 4259 conditions per place. [2024-12-02 13:39:08,569 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 207 selfloop transitions, 51 changer transitions 4/267 dead transitions. [2024-12-02 13:39:08,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 267 transitions, 2981 flow [2024-12-02 13:39:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:39:08,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 13:39:08,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 278 transitions. [2024-12-02 13:39:08,570 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-12-02 13:39:08,570 INFO L175 Difference]: Start difference. First operand has 208 places, 204 transitions, 2017 flow. Second operand 12 states and 278 transitions. [2024-12-02 13:39:08,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 267 transitions, 2981 flow [2024-12-02 13:39:08,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 267 transitions, 2820 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-12-02 13:39:08,832 INFO L231 Difference]: Finished difference. Result has 213 places, 208 transitions, 2036 flow [2024-12-02 13:39:08,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2036, PETRI_PLACES=213, PETRI_TRANSITIONS=208} [2024-12-02 13:39:08,832 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 154 predicate places. [2024-12-02 13:39:08,832 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 208 transitions, 2036 flow [2024-12-02 13:39:08,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:08,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:08,833 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, 1, 1, 1] [2024-12-02 13:39:08,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 13:39:08,833 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:08,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:08,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1402179503, now seen corresponding path program 20 times [2024-12-02 13:39:08,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:08,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789624650] [2024-12-02 13:39:08,834 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:39:08,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:08,865 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:39:08,865 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:09,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:09,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789624650] [2024-12-02 13:39:09,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789624650] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:09,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:09,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:09,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494056287] [2024-12-02 13:39:09,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:09,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:09,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:09,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:09,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:09,415 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:09,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 208 transitions, 2036 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:09,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:09,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:09,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:10,429 INFO L124 PetriNetUnfolderBase]: 3357/5657 cut-off events. [2024-12-02 13:39:10,429 INFO L125 PetriNetUnfolderBase]: For 86758/86758 co-relation queries the response was YES. [2024-12-02 13:39:10,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28117 conditions, 5657 events. 3357/5657 cut-off events. For 86758/86758 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 37302 event pairs, 1345 based on Foata normal form. 1/5532 useless extension candidates. Maximal degree in co-relation 28000. Up to 4708 conditions per place. [2024-12-02 13:39:10,479 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 237 selfloop transitions, 39 changer transitions 3/284 dead transitions. [2024-12-02 13:39:10,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 284 transitions, 3367 flow [2024-12-02 13:39:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2024-12-02 13:39:10,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3973607038123167 [2024-12-02 13:39:10,480 INFO L175 Difference]: Start difference. First operand has 213 places, 208 transitions, 2036 flow. Second operand 11 states and 271 transitions. [2024-12-02 13:39:10,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 284 transitions, 3367 flow [2024-12-02 13:39:10,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 284 transitions, 3203 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-12-02 13:39:10,699 INFO L231 Difference]: Finished difference. Result has 218 places, 220 transitions, 2296 flow [2024-12-02 13:39:10,699 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2296, PETRI_PLACES=218, PETRI_TRANSITIONS=220} [2024-12-02 13:39:10,700 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 159 predicate places. [2024-12-02 13:39:10,700 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 220 transitions, 2296 flow [2024-12-02 13:39:10,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:10,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:10,700 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, 1, 1, 1] [2024-12-02 13:39:10,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 13:39:10,700 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:10,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:10,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2054461755, now seen corresponding path program 21 times [2024-12-02 13:39:10,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:10,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568360759] [2024-12-02 13:39:10,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 13:39:10,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:10,723 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 13:39:10,723 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:11,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568360759] [2024-12-02 13:39:11,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568360759] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:11,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:11,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:11,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395213844] [2024-12-02 13:39:11,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:11,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:11,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:11,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:11,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:11,114 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:11,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 220 transitions, 2296 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:11,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:11,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:11,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:12,200 INFO L124 PetriNetUnfolderBase]: 3418/5765 cut-off events. [2024-12-02 13:39:12,200 INFO L125 PetriNetUnfolderBase]: For 97177/97177 co-relation queries the response was YES. [2024-12-02 13:39:12,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29086 conditions, 5765 events. 3418/5765 cut-off events. For 97177/97177 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 38203 event pairs, 1449 based on Foata normal form. 1/5642 useless extension candidates. Maximal degree in co-relation 28965. Up to 4978 conditions per place. [2024-12-02 13:39:12,253 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 227 selfloop transitions, 36 changer transitions 4/272 dead transitions. [2024-12-02 13:39:12,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 272 transitions, 3272 flow [2024-12-02 13:39:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:12,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 250 transitions. [2024-12-02 13:39:12,255 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-12-02 13:39:12,255 INFO L175 Difference]: Start difference. First operand has 218 places, 220 transitions, 2296 flow. Second operand 11 states and 250 transitions. [2024-12-02 13:39:12,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 272 transitions, 3272 flow [2024-12-02 13:39:12,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 272 transitions, 3028 flow, removed 106 selfloop flow, removed 4 redundant places. [2024-12-02 13:39:12,453 INFO L231 Difference]: Finished difference. Result has 227 places, 226 transitions, 2281 flow [2024-12-02 13:39:12,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2072, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2281, PETRI_PLACES=227, PETRI_TRANSITIONS=226} [2024-12-02 13:39:12,454 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 168 predicate places. [2024-12-02 13:39:12,454 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 226 transitions, 2281 flow [2024-12-02 13:39:12,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:12,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:12,454 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, 1, 1, 1] [2024-12-02 13:39:12,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 13:39:12,455 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:12,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:12,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1908417431, now seen corresponding path program 22 times [2024-12-02 13:39:12,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:12,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162532909] [2024-12-02 13:39:12,455 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 13:39:12,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:12,475 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 13:39:12,475 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:12,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:12,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162532909] [2024-12-02 13:39:12,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162532909] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:12,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:12,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:12,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888908609] [2024-12-02 13:39:12,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:12,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:12,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:12,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:12,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:12,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:39:12,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 226 transitions, 2281 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 13:39:12,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:12,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:39:12,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:14,074 INFO L124 PetriNetUnfolderBase]: 3773/6310 cut-off events. [2024-12-02 13:39:14,074 INFO L125 PetriNetUnfolderBase]: For 92740/92740 co-relation queries the response was YES. [2024-12-02 13:39:14,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30962 conditions, 6310 events. 3773/6310 cut-off events. For 92740/92740 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 42136 event pairs, 1544 based on Foata normal form. 1/6180 useless extension candidates. Maximal degree in co-relation 30836. Up to 5247 conditions per place. [2024-12-02 13:39:14,135 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 247 selfloop transitions, 44 changer transitions 3/298 dead transitions. [2024-12-02 13:39:14,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 298 transitions, 3573 flow [2024-12-02 13:39:14,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:14,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 261 transitions. [2024-12-02 13:39:14,136 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38269794721407624 [2024-12-02 13:39:14,136 INFO L175 Difference]: Start difference. First operand has 227 places, 226 transitions, 2281 flow. Second operand 11 states and 261 transitions. [2024-12-02 13:39:14,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 298 transitions, 3573 flow [2024-12-02 13:39:14,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 298 transitions, 3425 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-12-02 13:39:14,405 INFO L231 Difference]: Finished difference. Result has 235 places, 235 transitions, 2539 flow [2024-12-02 13:39:14,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2539, PETRI_PLACES=235, PETRI_TRANSITIONS=235} [2024-12-02 13:39:14,406 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 176 predicate places. [2024-12-02 13:39:14,406 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 235 transitions, 2539 flow [2024-12-02 13:39:14,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 13:39:14,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:14,406 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, 1, 1, 1] [2024-12-02 13:39:14,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 13:39:14,407 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:14,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:14,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1584605475, now seen corresponding path program 23 times [2024-12-02 13:39:14,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:14,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871853044] [2024-12-02 13:39:14,408 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 13:39:14,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:14,422 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 13:39:14,423 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:14,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:14,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:14,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871853044] [2024-12-02 13:39:14,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871853044] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:14,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:14,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:14,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822667437] [2024-12-02 13:39:14,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:14,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:14,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:14,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:14,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:14,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:14,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 235 transitions, 2539 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:14,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:14,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:14,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:16,183 INFO L124 PetriNetUnfolderBase]: 3688/6246 cut-off events. [2024-12-02 13:39:16,184 INFO L125 PetriNetUnfolderBase]: For 109488/109488 co-relation queries the response was YES. [2024-12-02 13:39:16,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31889 conditions, 6246 events. 3688/6246 cut-off events. For 109488/109488 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 42472 event pairs, 1563 based on Foata normal form. 1/6115 useless extension candidates. Maximal degree in co-relation 31758. Up to 5343 conditions per place. [2024-12-02 13:39:16,248 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 256 selfloop transitions, 35 changer transitions 3/299 dead transitions. [2024-12-02 13:39:16,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 299 transitions, 3843 flow [2024-12-02 13:39:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-12-02 13:39:16,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-12-02 13:39:16,249 INFO L175 Difference]: Start difference. First operand has 235 places, 235 transitions, 2539 flow. Second operand 11 states and 260 transitions. [2024-12-02 13:39:16,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 299 transitions, 3843 flow [2024-12-02 13:39:16,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 299 transitions, 3603 flow, removed 101 selfloop flow, removed 5 redundant places. [2024-12-02 13:39:16,515 INFO L231 Difference]: Finished difference. Result has 244 places, 242 transitions, 2637 flow [2024-12-02 13:39:16,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2637, PETRI_PLACES=244, PETRI_TRANSITIONS=242} [2024-12-02 13:39:16,516 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 185 predicate places. [2024-12-02 13:39:16,516 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 242 transitions, 2637 flow [2024-12-02 13:39:16,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:16,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:16,516 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, 1, 1, 1] [2024-12-02 13:39:16,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 13:39:16,516 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:16,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash 544784293, now seen corresponding path program 24 times [2024-12-02 13:39:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:16,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985124907] [2024-12-02 13:39:16,517 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 13:39:16,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:16,536 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 13:39:16,536 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:17,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:17,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985124907] [2024-12-02 13:39:17,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985124907] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:17,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:17,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:17,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714754634] [2024-12-02 13:39:17,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:17,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:17,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:17,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:17,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:17,037 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:17,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 242 transitions, 2637 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:17,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:17,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:17,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:18,438 INFO L124 PetriNetUnfolderBase]: 3814/6479 cut-off events. [2024-12-02 13:39:18,438 INFO L125 PetriNetUnfolderBase]: For 123542/123542 co-relation queries the response was YES. [2024-12-02 13:39:18,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33189 conditions, 6479 events. 3814/6479 cut-off events. For 123542/123542 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 44572 event pairs, 1624 based on Foata normal form. 1/6339 useless extension candidates. Maximal degree in co-relation 33052. Up to 5524 conditions per place. [2024-12-02 13:39:18,487 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 266 selfloop transitions, 37 changer transitions 3/311 dead transitions. [2024-12-02 13:39:18,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 311 transitions, 3957 flow [2024-12-02 13:39:18,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 263 transitions. [2024-12-02 13:39:18,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38563049853372433 [2024-12-02 13:39:18,488 INFO L175 Difference]: Start difference. First operand has 244 places, 242 transitions, 2637 flow. Second operand 11 states and 263 transitions. [2024-12-02 13:39:18,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 311 transitions, 3957 flow [2024-12-02 13:39:18,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 311 transitions, 3729 flow, removed 97 selfloop flow, removed 5 redundant places. [2024-12-02 13:39:18,783 INFO L231 Difference]: Finished difference. Result has 253 places, 250 transitions, 2744 flow [2024-12-02 13:39:18,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2409, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2744, PETRI_PLACES=253, PETRI_TRANSITIONS=250} [2024-12-02 13:39:18,783 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 194 predicate places. [2024-12-02 13:39:18,783 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 250 transitions, 2744 flow [2024-12-02 13:39:18,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:18,784 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:18,784 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, 1, 1, 1] [2024-12-02 13:39:18,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-12-02 13:39:18,784 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:18,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:18,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1660782743, now seen corresponding path program 25 times [2024-12-02 13:39:18,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:18,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836228103] [2024-12-02 13:39:18,785 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 13:39:18,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:39:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:19,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:19,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836228103] [2024-12-02 13:39:19,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836228103] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:19,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:19,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:19,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678414334] [2024-12-02 13:39:19,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:19,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:19,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:19,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:19,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:19,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:19,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 250 transitions, 2744 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:19,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:19,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:19,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:20,589 INFO L124 PetriNetUnfolderBase]: 3814/6485 cut-off events. [2024-12-02 13:39:20,589 INFO L125 PetriNetUnfolderBase]: For 124680/124704 co-relation queries the response was YES. [2024-12-02 13:39:20,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33026 conditions, 6485 events. 3814/6485 cut-off events. For 124680/124704 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 44874 event pairs, 1626 based on Foata normal form. 3/6338 useless extension candidates. Maximal degree in co-relation 32884. Up to 5632 conditions per place. [2024-12-02 13:39:20,655 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 260 selfloop transitions, 34 changer transitions 3/302 dead transitions. [2024-12-02 13:39:20,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 302 transitions, 3797 flow [2024-12-02 13:39:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:20,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 251 transitions. [2024-12-02 13:39:20,656 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3680351906158358 [2024-12-02 13:39:20,656 INFO L175 Difference]: Start difference. First operand has 253 places, 250 transitions, 2744 flow. Second operand 11 states and 251 transitions. [2024-12-02 13:39:20,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 302 transitions, 3797 flow [2024-12-02 13:39:20,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 302 transitions, 3613 flow, removed 80 selfloop flow, removed 5 redundant places. [2024-12-02 13:39:20,952 INFO L231 Difference]: Finished difference. Result has 260 places, 253 transitions, 2693 flow [2024-12-02 13:39:20,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2693, PETRI_PLACES=260, PETRI_TRANSITIONS=253} [2024-12-02 13:39:20,953 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 201 predicate places. [2024-12-02 13:39:20,953 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 253 transitions, 2693 flow [2024-12-02 13:39:20,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:20,953 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:20,953 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, 1, 1, 1] [2024-12-02 13:39:20,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 13:39:20,953 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:20,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash 917589721, now seen corresponding path program 26 times [2024-12-02 13:39:20,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:20,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078648711] [2024-12-02 13:39:20,954 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:39:20,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:20,970 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:39:20,970 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:21,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:21,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078648711] [2024-12-02 13:39:21,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078648711] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:21,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:21,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:21,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328476894] [2024-12-02 13:39:21,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:21,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:21,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:21,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:21,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:21,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:21,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 253 transitions, 2693 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:21,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:21,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:21,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:22,836 INFO L124 PetriNetUnfolderBase]: 3910/6650 cut-off events. [2024-12-02 13:39:22,836 INFO L125 PetriNetUnfolderBase]: For 128909/128909 co-relation queries the response was YES. [2024-12-02 13:39:22,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34061 conditions, 6650 events. 3910/6650 cut-off events. For 128909/128909 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 46105 event pairs, 1712 based on Foata normal form. 1/6509 useless extension candidates. Maximal degree in co-relation 33916. Up to 5715 conditions per place. [2024-12-02 13:39:22,898 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 271 selfloop transitions, 36 changer transitions 3/315 dead transitions. [2024-12-02 13:39:22,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 315 transitions, 3982 flow [2024-12-02 13:39:22,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:22,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-12-02 13:39:22,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-12-02 13:39:22,899 INFO L175 Difference]: Start difference. First operand has 260 places, 253 transitions, 2693 flow. Second operand 11 states and 260 transitions. [2024-12-02 13:39:22,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 315 transitions, 3982 flow [2024-12-02 13:39:23,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 315 transitions, 3854 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-12-02 13:39:23,199 INFO L231 Difference]: Finished difference. Result has 265 places, 259 transitions, 2844 flow [2024-12-02 13:39:23,199 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2844, PETRI_PLACES=265, PETRI_TRANSITIONS=259} [2024-12-02 13:39:23,200 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 206 predicate places. [2024-12-02 13:39:23,200 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 259 transitions, 2844 flow [2024-12-02 13:39:23,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:23,200 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:23,200 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, 1, 1, 1] [2024-12-02 13:39:23,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 13:39:23,200 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:23,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:23,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1390640789, now seen corresponding path program 27 times [2024-12-02 13:39:23,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:23,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088227696] [2024-12-02 13:39:23,201 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 13:39:23,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:23,223 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 13:39:23,223 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:23,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:23,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088227696] [2024-12-02 13:39:23,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088227696] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:23,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:23,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:23,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830043083] [2024-12-02 13:39:23,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:23,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:23,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:23,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:23,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:23,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:23,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 259 transitions, 2844 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:23,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:23,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:23,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:25,257 INFO L124 PetriNetUnfolderBase]: 3910/6653 cut-off events. [2024-12-02 13:39:25,257 INFO L125 PetriNetUnfolderBase]: For 137930/137930 co-relation queries the response was YES. [2024-12-02 13:39:25,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34447 conditions, 6653 events. 3910/6653 cut-off events. For 137930/137930 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 46181 event pairs, 1681 based on Foata normal form. 1/6512 useless extension candidates. Maximal degree in co-relation 34299. Up to 5633 conditions per place. [2024-12-02 13:39:25,347 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 272 selfloop transitions, 41 changer transitions 5/323 dead transitions. [2024-12-02 13:39:25,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 323 transitions, 3992 flow [2024-12-02 13:39:25,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:25,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-12-02 13:39:25,348 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-12-02 13:39:25,348 INFO L175 Difference]: Start difference. First operand has 265 places, 259 transitions, 2844 flow. Second operand 11 states and 269 transitions. [2024-12-02 13:39:25,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 323 transitions, 3992 flow [2024-12-02 13:39:25,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 323 transitions, 3788 flow, removed 83 selfloop flow, removed 6 redundant places. [2024-12-02 13:39:25,678 INFO L231 Difference]: Finished difference. Result has 271 places, 263 transitions, 2795 flow [2024-12-02 13:39:25,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2640, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2795, PETRI_PLACES=271, PETRI_TRANSITIONS=263} [2024-12-02 13:39:25,679 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 212 predicate places. [2024-12-02 13:39:25,679 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 263 transitions, 2795 flow [2024-12-02 13:39:25,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:25,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:25,679 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, 1, 1, 1] [2024-12-02 13:39:25,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 13:39:25,679 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:25,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash 689830807, now seen corresponding path program 28 times [2024-12-02 13:39:25,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:25,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601532699] [2024-12-02 13:39:25,680 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 13:39:25,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:25,709 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 13:39:25,709 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:26,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:26,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601532699] [2024-12-02 13:39:26,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601532699] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:26,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:26,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:26,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269071835] [2024-12-02 13:39:26,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:26,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:26,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:26,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:26,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:26,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:39:26,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 263 transitions, 2795 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 13:39:26,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:26,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:39:26,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:27,449 INFO L124 PetriNetUnfolderBase]: 4108/6923 cut-off events. [2024-12-02 13:39:27,450 INFO L125 PetriNetUnfolderBase]: For 137127/137127 co-relation queries the response was YES. [2024-12-02 13:39:27,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35379 conditions, 6923 events. 4108/6923 cut-off events. For 137127/137127 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 47704 event pairs, 1748 based on Foata normal form. 1/6776 useless extension candidates. Maximal degree in co-relation 35228. Up to 5805 conditions per place. [2024-12-02 13:39:27,533 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 272 selfloop transitions, 46 changer transitions 5/327 dead transitions. [2024-12-02 13:39:27,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 327 transitions, 3901 flow [2024-12-02 13:39:27,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:27,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-12-02 13:39:27,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-12-02 13:39:27,534 INFO L175 Difference]: Start difference. First operand has 271 places, 263 transitions, 2795 flow. Second operand 11 states and 260 transitions. [2024-12-02 13:39:27,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 327 transitions, 3901 flow [2024-12-02 13:39:27,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 327 transitions, 3766 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-12-02 13:39:27,966 INFO L231 Difference]: Finished difference. Result has 276 places, 267 transitions, 2836 flow [2024-12-02 13:39:27,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2660, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2836, PETRI_PLACES=276, PETRI_TRANSITIONS=267} [2024-12-02 13:39:27,966 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 217 predicate places. [2024-12-02 13:39:27,966 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 267 transitions, 2836 flow [2024-12-02 13:39:27,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 13:39:27,966 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:27,966 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, 1, 1, 1] [2024-12-02 13:39:27,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 13:39:27,967 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:27,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:27,967 INFO L85 PathProgramCache]: Analyzing trace with hash 131227231, now seen corresponding path program 29 times [2024-12-02 13:39:27,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:27,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230490808] [2024-12-02 13:39:27,967 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 13:39:27,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:27,984 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 13:39:27,984 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:28,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:28,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230490808] [2024-12-02 13:39:28,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230490808] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:28,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:28,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:28,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529398210] [2024-12-02 13:39:28,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:28,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:28,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:28,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:28,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:28,412 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:28,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 267 transitions, 2836 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:28,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:28,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:28,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:29,701 INFO L124 PetriNetUnfolderBase]: 3946/6734 cut-off events. [2024-12-02 13:39:29,701 INFO L125 PetriNetUnfolderBase]: For 130637/130661 co-relation queries the response was YES. [2024-12-02 13:39:29,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34035 conditions, 6734 events. 3946/6734 cut-off events. For 130637/130661 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 47370 event pairs, 1737 based on Foata normal form. 3/6584 useless extension candidates. Maximal degree in co-relation 33881. Up to 5883 conditions per place. [2024-12-02 13:39:29,778 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 271 selfloop transitions, 37 changer transitions 3/316 dead transitions. [2024-12-02 13:39:29,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 316 transitions, 3868 flow [2024-12-02 13:39:29,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:29,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:29,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 250 transitions. [2024-12-02 13:39:29,780 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-12-02 13:39:29,780 INFO L175 Difference]: Start difference. First operand has 276 places, 267 transitions, 2836 flow. Second operand 11 states and 250 transitions. [2024-12-02 13:39:29,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 316 transitions, 3868 flow [2024-12-02 13:39:30,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 316 transitions, 3715 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-12-02 13:39:30,115 INFO L231 Difference]: Finished difference. Result has 281 places, 270 transitions, 2831 flow [2024-12-02 13:39:30,115 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2683, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2831, PETRI_PLACES=281, PETRI_TRANSITIONS=270} [2024-12-02 13:39:30,115 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 222 predicate places. [2024-12-02 13:39:30,115 INFO L471 AbstractCegarLoop]: Abstraction has has 281 places, 270 transitions, 2831 flow [2024-12-02 13:39:30,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:30,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:30,115 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, 1, 1, 1] [2024-12-02 13:39:30,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 13:39:30,116 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:30,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:30,117 INFO L85 PathProgramCache]: Analyzing trace with hash -524694265, now seen corresponding path program 30 times [2024-12-02 13:39:30,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:30,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141969538] [2024-12-02 13:39:30,117 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 13:39:30,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:30,132 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 13:39:30,132 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:30,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:30,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141969538] [2024-12-02 13:39:30,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141969538] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:30,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:30,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:30,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535670420] [2024-12-02 13:39:30,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:30,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:30,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:30,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:30,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:30,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:30,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 270 transitions, 2831 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:30,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:30,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:30,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:31,836 INFO L124 PetriNetUnfolderBase]: 3946/6726 cut-off events. [2024-12-02 13:39:31,836 INFO L125 PetriNetUnfolderBase]: For 126244/126244 co-relation queries the response was YES. [2024-12-02 13:39:31,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33758 conditions, 6726 events. 3946/6726 cut-off events. For 126244/126244 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 46988 event pairs, 1776 based on Foata normal form. 1/6581 useless extension candidates. Maximal degree in co-relation 33601. Up to 5896 conditions per place. [2024-12-02 13:39:31,912 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 273 selfloop transitions, 35 changer transitions 3/316 dead transitions. [2024-12-02 13:39:31,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 316 transitions, 3813 flow [2024-12-02 13:39:31,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:31,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:31,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 247 transitions. [2024-12-02 13:39:31,913 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3621700879765396 [2024-12-02 13:39:31,913 INFO L175 Difference]: Start difference. First operand has 281 places, 270 transitions, 2831 flow. Second operand 11 states and 247 transitions. [2024-12-02 13:39:31,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 316 transitions, 3813 flow [2024-12-02 13:39:32,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 316 transitions, 3685 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-12-02 13:39:32,244 INFO L231 Difference]: Finished difference. Result has 285 places, 272 transitions, 2799 flow [2024-12-02 13:39:32,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2705, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2799, PETRI_PLACES=285, PETRI_TRANSITIONS=272} [2024-12-02 13:39:32,245 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 226 predicate places. [2024-12-02 13:39:32,245 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 272 transitions, 2799 flow [2024-12-02 13:39:32,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:32,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:32,245 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, 1, 1, 1] [2024-12-02 13:39:32,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-12-02 13:39:32,245 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:32,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:32,246 INFO L85 PathProgramCache]: Analyzing trace with hash 743081979, now seen corresponding path program 31 times [2024-12-02 13:39:32,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:32,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477144945] [2024-12-02 13:39:32,246 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 13:39:32,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:39:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:32,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:32,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477144945] [2024-12-02 13:39:32,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477144945] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:32,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:32,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:32,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429632476] [2024-12-02 13:39:32,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:32,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:32,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:32,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:32,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:32,733 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:32,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 272 transitions, 2799 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:32,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:32,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:32,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:34,165 INFO L124 PetriNetUnfolderBase]: 4077/6963 cut-off events. [2024-12-02 13:39:34,165 INFO L125 PetriNetUnfolderBase]: For 144743/144767 co-relation queries the response was YES. [2024-12-02 13:39:34,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35709 conditions, 6963 events. 4077/6963 cut-off events. For 144743/144767 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 49433 event pairs, 1770 based on Foata normal form. 3/6805 useless extension candidates. Maximal degree in co-relation 35550. Up to 6009 conditions per place. [2024-12-02 13:39:34,246 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 289 selfloop transitions, 35 changer transitions 3/332 dead transitions. [2024-12-02 13:39:34,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 332 transitions, 4308 flow [2024-12-02 13:39:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:34,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 257 transitions. [2024-12-02 13:39:34,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37683284457478006 [2024-12-02 13:39:34,247 INFO L175 Difference]: Start difference. First operand has 285 places, 272 transitions, 2799 flow. Second operand 11 states and 257 transitions. [2024-12-02 13:39:34,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 332 transitions, 4308 flow [2024-12-02 13:39:34,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 332 transitions, 4240 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-12-02 13:39:34,555 INFO L231 Difference]: Finished difference. Result has 291 places, 281 transitions, 3218 flow [2024-12-02 13:39:34,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2731, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3218, PETRI_PLACES=291, PETRI_TRANSITIONS=281} [2024-12-02 13:39:34,556 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 232 predicate places. [2024-12-02 13:39:34,556 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 281 transitions, 3218 flow [2024-12-02 13:39:34,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:34,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:34,556 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, 1, 1, 1] [2024-12-02 13:39:34,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-12-02 13:39:34,556 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:34,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:34,557 INFO L85 PathProgramCache]: Analyzing trace with hash -363908027, now seen corresponding path program 32 times [2024-12-02 13:39:34,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:34,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415797514] [2024-12-02 13:39:34,557 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:39:34,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:34,572 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:39:34,572 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:34,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:34,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415797514] [2024-12-02 13:39:34,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415797514] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:34,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:34,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:34,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713407770] [2024-12-02 13:39:34,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:34,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:34,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:34,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:34,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:35,010 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:35,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 281 transitions, 3218 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:35,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:35,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:35,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:36,489 INFO L124 PetriNetUnfolderBase]: 4260/7254 cut-off events. [2024-12-02 13:39:36,489 INFO L125 PetriNetUnfolderBase]: For 195080/195080 co-relation queries the response was YES. [2024-12-02 13:39:36,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39805 conditions, 7254 events. 4260/7254 cut-off events. For 195080/195080 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 51521 event pairs, 1861 based on Foata normal form. 1/7089 useless extension candidates. Maximal degree in co-relation 39642. Up to 6198 conditions per place. [2024-12-02 13:39:36,578 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 307 selfloop transitions, 38 changer transitions 3/353 dead transitions. [2024-12-02 13:39:36,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 353 transitions, 4851 flow [2024-12-02 13:39:36,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 270 transitions. [2024-12-02 13:39:36,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-12-02 13:39:36,579 INFO L175 Difference]: Start difference. First operand has 291 places, 281 transitions, 3218 flow. Second operand 11 states and 270 transitions. [2024-12-02 13:39:36,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 353 transitions, 4851 flow [2024-12-02 13:39:36,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 353 transitions, 4509 flow, removed 155 selfloop flow, removed 5 redundant places. [2024-12-02 13:39:36,927 INFO L231 Difference]: Finished difference. Result has 301 places, 292 transitions, 3394 flow [2024-12-02 13:39:36,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2876, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3394, PETRI_PLACES=301, PETRI_TRANSITIONS=292} [2024-12-02 13:39:36,927 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 242 predicate places. [2024-12-02 13:39:36,927 INFO L471 AbstractCegarLoop]: Abstraction has has 301 places, 292 transitions, 3394 flow [2024-12-02 13:39:36,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:36,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:36,927 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, 1, 1, 1] [2024-12-02 13:39:36,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-12-02 13:39:36,927 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:36,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:36,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1421906027, now seen corresponding path program 33 times [2024-12-02 13:39:36,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:36,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473730343] [2024-12-02 13:39:36,928 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 13:39:36,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:36,942 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 13:39:36,942 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:37,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:37,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473730343] [2024-12-02 13:39:37,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473730343] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:37,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:37,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:37,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351281430] [2024-12-02 13:39:37,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:37,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:37,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:37,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:37,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:37,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:37,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 292 transitions, 3394 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:37,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:37,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:37,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:38,768 INFO L124 PetriNetUnfolderBase]: 4321/7362 cut-off events. [2024-12-02 13:39:38,768 INFO L125 PetriNetUnfolderBase]: For 201569/201569 co-relation queries the response was YES. [2024-12-02 13:39:38,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40215 conditions, 7362 events. 4321/7362 cut-off events. For 201569/201569 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 52551 event pairs, 1965 based on Foata normal form. 1/7199 useless extension candidates. Maximal degree in co-relation 40046. Up to 6468 conditions per place. [2024-12-02 13:39:38,869 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 297 selfloop transitions, 35 changer transitions 4/341 dead transitions. [2024-12-02 13:39:38,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 341 transitions, 4558 flow [2024-12-02 13:39:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 249 transitions. [2024-12-02 13:39:38,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3651026392961877 [2024-12-02 13:39:38,871 INFO L175 Difference]: Start difference. First operand has 301 places, 292 transitions, 3394 flow. Second operand 11 states and 249 transitions. [2024-12-02 13:39:38,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 341 transitions, 4558 flow [2024-12-02 13:39:39,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 341 transitions, 4252 flow, removed 138 selfloop flow, removed 4 redundant places. [2024-12-02 13:39:39,511 INFO L231 Difference]: Finished difference. Result has 310 places, 298 transitions, 3347 flow [2024-12-02 13:39:39,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3088, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3347, PETRI_PLACES=310, PETRI_TRANSITIONS=298} [2024-12-02 13:39:39,511 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 251 predicate places. [2024-12-02 13:39:39,511 INFO L471 AbstractCegarLoop]: Abstraction has has 310 places, 298 transitions, 3347 flow [2024-12-02 13:39:39,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:39,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:39,512 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, 1, 1, 1] [2024-12-02 13:39:39,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-12-02 13:39:39,512 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:39,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:39,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1275861703, now seen corresponding path program 34 times [2024-12-02 13:39:39,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:39,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318778502] [2024-12-02 13:39:39,513 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 13:39:39,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:39,530 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 13:39:39,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:39,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:39,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318778502] [2024-12-02 13:39:39,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318778502] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:39,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:39,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:39,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453856216] [2024-12-02 13:39:39,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:39,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:39,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:39,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:39,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:39,931 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:39:39,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 298 transitions, 3347 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 13:39:39,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:39,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:39:39,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:41,804 INFO L124 PetriNetUnfolderBase]: 4691/7920 cut-off events. [2024-12-02 13:39:41,804 INFO L125 PetriNetUnfolderBase]: For 216439/216439 co-relation queries the response was YES. [2024-12-02 13:39:41,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42972 conditions, 7920 events. 4691/7920 cut-off events. For 216439/216439 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 56518 event pairs, 2097 based on Foata normal form. 1/7756 useless extension candidates. Maximal degree in co-relation 42798. Up to 6737 conditions per place. [2024-12-02 13:39:41,921 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 318 selfloop transitions, 43 changer transitions 3/368 dead transitions. [2024-12-02 13:39:41,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 368 transitions, 4971 flow [2024-12-02 13:39:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:41,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 261 transitions. [2024-12-02 13:39:41,922 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38269794721407624 [2024-12-02 13:39:41,922 INFO L175 Difference]: Start difference. First operand has 310 places, 298 transitions, 3347 flow. Second operand 11 states and 261 transitions. [2024-12-02 13:39:41,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 368 transitions, 4971 flow [2024-12-02 13:39:42,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 368 transitions, 4751 flow, removed 91 selfloop flow, removed 6 redundant places. [2024-12-02 13:39:42,712 INFO L231 Difference]: Finished difference. Result has 318 places, 307 transitions, 3657 flow [2024-12-02 13:39:42,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3657, PETRI_PLACES=318, PETRI_TRANSITIONS=307} [2024-12-02 13:39:42,712 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 259 predicate places. [2024-12-02 13:39:42,712 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 307 transitions, 3657 flow [2024-12-02 13:39:42,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 13:39:42,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:42,712 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, 1, 1, 1] [2024-12-02 13:39:42,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-12-02 13:39:42,712 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:42,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:42,713 INFO L85 PathProgramCache]: Analyzing trace with hash 525762897, now seen corresponding path program 35 times [2024-12-02 13:39:42,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:42,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000926654] [2024-12-02 13:39:42,713 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 13:39:42,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:42,730 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 13:39:42,730 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:43,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:43,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000926654] [2024-12-02 13:39:43,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000926654] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:43,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:43,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:43,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026034918] [2024-12-02 13:39:43,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:43,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:43,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:43,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:43,255 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:43,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 307 transitions, 3657 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:43,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:43,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:43,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:44,959 INFO L124 PetriNetUnfolderBase]: 4556/7755 cut-off events. [2024-12-02 13:39:44,960 INFO L125 PetriNetUnfolderBase]: For 238263/238263 co-relation queries the response was YES. [2024-12-02 13:39:45,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43291 conditions, 7755 events. 4556/7755 cut-off events. For 238263/238263 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 56022 event pairs, 2093 based on Foata normal form. 1/7595 useless extension candidates. Maximal degree in co-relation 43112. Up to 6759 conditions per place. [2024-12-02 13:39:45,056 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 324 selfloop transitions, 34 changer transitions 3/366 dead transitions. [2024-12-02 13:39:45,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 366 transitions, 5116 flow [2024-12-02 13:39:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:45,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:45,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 259 transitions. [2024-12-02 13:39:45,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37976539589442815 [2024-12-02 13:39:45,057 INFO L175 Difference]: Start difference. First operand has 318 places, 307 transitions, 3657 flow. Second operand 11 states and 259 transitions. [2024-12-02 13:39:45,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 366 transitions, 5116 flow [2024-12-02 13:39:45,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 366 transitions, 4782 flow, removed 149 selfloop flow, removed 5 redundant places. [2024-12-02 13:39:45,918 INFO L231 Difference]: Finished difference. Result has 326 places, 312 transitions, 3639 flow [2024-12-02 13:39:45,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3639, PETRI_PLACES=326, PETRI_TRANSITIONS=312} [2024-12-02 13:39:45,919 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 267 predicate places. [2024-12-02 13:39:45,919 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 312 transitions, 3639 flow [2024-12-02 13:39:45,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:45,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:45,919 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, 1, 1, 1] [2024-12-02 13:39:45,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-12-02 13:39:45,919 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:45,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:45,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2001628825, now seen corresponding path program 36 times [2024-12-02 13:39:45,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:45,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222738655] [2024-12-02 13:39:45,920 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 13:39:45,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:45,943 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 13:39:45,943 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:46,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:46,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222738655] [2024-12-02 13:39:46,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222738655] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:46,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:46,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:46,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579070301] [2024-12-02 13:39:46,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:46,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:46,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:46,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:46,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:46,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:46,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 312 transitions, 3639 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:46,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:46,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:46,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:48,333 INFO L124 PetriNetUnfolderBase]: 4556/7747 cut-off events. [2024-12-02 13:39:48,333 INFO L125 PetriNetUnfolderBase]: For 226017/226017 co-relation queries the response was YES. [2024-12-02 13:39:48,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42117 conditions, 7747 events. 4556/7747 cut-off events. For 226017/226017 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 55976 event pairs, 2117 based on Foata normal form. 1/7591 useless extension candidates. Maximal degree in co-relation 41933. Up to 6836 conditions per place. [2024-12-02 13:39:48,416 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 320 selfloop transitions, 33 changer transitions 3/361 dead transitions. [2024-12-02 13:39:48,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 361 transitions, 4844 flow [2024-12-02 13:39:48,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:48,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:48,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 250 transitions. [2024-12-02 13:39:48,417 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-12-02 13:39:48,417 INFO L175 Difference]: Start difference. First operand has 326 places, 312 transitions, 3639 flow. Second operand 11 states and 250 transitions. [2024-12-02 13:39:48,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 361 transitions, 4844 flow [2024-12-02 13:39:49,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 361 transitions, 4595 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-12-02 13:39:49,225 INFO L231 Difference]: Finished difference. Result has 332 places, 315 transitions, 3541 flow [2024-12-02 13:39:49,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3390, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3541, PETRI_PLACES=332, PETRI_TRANSITIONS=315} [2024-12-02 13:39:49,226 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 273 predicate places. [2024-12-02 13:39:49,226 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 315 transitions, 3541 flow [2024-12-02 13:39:49,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:49,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:49,226 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, 1, 1, 1] [2024-12-02 13:39:49,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-12-02 13:39:49,226 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:49,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:49,227 INFO L85 PathProgramCache]: Analyzing trace with hash 285033993, now seen corresponding path program 37 times [2024-12-02 13:39:49,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:49,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008672310] [2024-12-02 13:39:49,227 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 13:39:49,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:39:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:49,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:49,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008672310] [2024-12-02 13:39:49,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008672310] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:49,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:49,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:49,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841215372] [2024-12-02 13:39:49,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:49,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:49,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:49,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:49,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:49,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:49,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 315 transitions, 3541 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:49,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:49,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:49,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:51,709 INFO L124 PetriNetUnfolderBase]: 4619/7863 cut-off events. [2024-12-02 13:39:51,710 INFO L125 PetriNetUnfolderBase]: For 228670/228670 co-relation queries the response was YES. [2024-12-02 13:39:51,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42610 conditions, 7863 events. 4619/7863 cut-off events. For 228670/228670 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 56942 event pairs, 2163 based on Foata normal form. 1/7704 useless extension candidates. Maximal degree in co-relation 42423. Up to 6851 conditions per place. [2024-12-02 13:39:51,862 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 330 selfloop transitions, 35 changer transitions 3/373 dead transitions. [2024-12-02 13:39:51,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 373 transitions, 5029 flow [2024-12-02 13:39:51,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 259 transitions. [2024-12-02 13:39:51,863 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37976539589442815 [2024-12-02 13:39:51,863 INFO L175 Difference]: Start difference. First operand has 332 places, 315 transitions, 3541 flow. Second operand 11 states and 259 transitions. [2024-12-02 13:39:51,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 373 transitions, 5029 flow [2024-12-02 13:39:52,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 373 transitions, 4905 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-12-02 13:39:52,745 INFO L231 Difference]: Finished difference. Result has 337 places, 320 transitions, 3743 flow [2024-12-02 13:39:52,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3417, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3743, PETRI_PLACES=337, PETRI_TRANSITIONS=320} [2024-12-02 13:39:52,746 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 278 predicate places. [2024-12-02 13:39:52,746 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 320 transitions, 3743 flow [2024-12-02 13:39:52,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:52,746 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:52,746 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, 1, 1, 1] [2024-12-02 13:39:52,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-12-02 13:39:52,746 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:52,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:52,747 INFO L85 PathProgramCache]: Analyzing trace with hash -504157719, now seen corresponding path program 38 times [2024-12-02 13:39:52,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:52,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367091848] [2024-12-02 13:39:52,747 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:39:52,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:52,761 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:39:52,762 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:53,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:53,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367091848] [2024-12-02 13:39:53,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367091848] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:53,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:53,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:53,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590943319] [2024-12-02 13:39:53,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:53,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:53,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:53,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:53,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:53,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:53,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 320 transitions, 3743 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:53,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:53,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:53,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:55,046 INFO L124 PetriNetUnfolderBase]: 4619/7866 cut-off events. [2024-12-02 13:39:55,046 INFO L125 PetriNetUnfolderBase]: For 240233/240233 co-relation queries the response was YES. [2024-12-02 13:39:55,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42965 conditions, 7866 events. 4619/7866 cut-off events. For 240233/240233 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 56962 event pairs, 2132 based on Foata normal form. 1/7707 useless extension candidates. Maximal degree in co-relation 42775. Up to 6769 conditions per place. [2024-12-02 13:39:55,140 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 331 selfloop transitions, 40 changer transitions 5/381 dead transitions. [2024-12-02 13:39:55,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 381 transitions, 5039 flow [2024-12-02 13:39:55,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:55,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2024-12-02 13:39:55,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-12-02 13:39:55,141 INFO L175 Difference]: Start difference. First operand has 337 places, 320 transitions, 3743 flow. Second operand 11 states and 268 transitions. [2024-12-02 13:39:55,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 381 transitions, 5039 flow [2024-12-02 13:39:55,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 381 transitions, 4775 flow, removed 114 selfloop flow, removed 6 redundant places. [2024-12-02 13:39:55,881 INFO L231 Difference]: Finished difference. Result has 343 places, 324 transitions, 3652 flow [2024-12-02 13:39:55,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3479, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3652, PETRI_PLACES=343, PETRI_TRANSITIONS=324} [2024-12-02 13:39:55,881 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 284 predicate places. [2024-12-02 13:39:55,881 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 324 transitions, 3652 flow [2024-12-02 13:39:55,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:55,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:55,881 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, 1, 1, 1] [2024-12-02 13:39:55,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-12-02 13:39:55,881 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:55,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:55,882 INFO L85 PathProgramCache]: Analyzing trace with hash -501328497, now seen corresponding path program 39 times [2024-12-02 13:39:55,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:55,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642556504] [2024-12-02 13:39:55,882 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 13:39:55,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:55,897 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 13:39:55,897 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:56,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:56,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:56,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642556504] [2024-12-02 13:39:56,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642556504] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:56,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:56,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:56,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372409871] [2024-12-02 13:39:56,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:56,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:56,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:56,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:56,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:56,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:39:56,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 324 transitions, 3652 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:56,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:56,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:39:56,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:39:58,221 INFO L124 PetriNetUnfolderBase]: 4655/7933 cut-off events. [2024-12-02 13:39:58,221 INFO L125 PetriNetUnfolderBase]: For 223946/223946 co-relation queries the response was YES. [2024-12-02 13:39:58,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42352 conditions, 7933 events. 4655/7933 cut-off events. For 223946/223946 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 57609 event pairs, 2220 based on Foata normal form. 1/7775 useless extension candidates. Maximal degree in co-relation 42159. Up to 7020 conditions per place. [2024-12-02 13:39:58,319 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 326 selfloop transitions, 36 changer transitions 3/370 dead transitions. [2024-12-02 13:39:58,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 370 transitions, 4804 flow [2024-12-02 13:39:58,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:39:58,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:39:58,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 249 transitions. [2024-12-02 13:39:58,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3651026392961877 [2024-12-02 13:39:58,320 INFO L175 Difference]: Start difference. First operand has 343 places, 324 transitions, 3652 flow. Second operand 11 states and 249 transitions. [2024-12-02 13:39:58,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 370 transitions, 4804 flow [2024-12-02 13:39:59,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 370 transitions, 4639 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-12-02 13:39:59,045 INFO L231 Difference]: Finished difference. Result has 348 places, 327 transitions, 3651 flow [2024-12-02 13:39:59,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3651, PETRI_PLACES=348, PETRI_TRANSITIONS=327} [2024-12-02 13:39:59,046 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 289 predicate places. [2024-12-02 13:39:59,046 INFO L471 AbstractCegarLoop]: Abstraction has has 348 places, 327 transitions, 3651 flow [2024-12-02 13:39:59,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:39:59,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:39:59,047 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, 1, 1, 1] [2024-12-02 13:39:59,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-12-02 13:39:59,047 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:39:59,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:59,048 INFO L85 PathProgramCache]: Analyzing trace with hash 57275079, now seen corresponding path program 40 times [2024-12-02 13:39:59,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:59,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925869440] [2024-12-02 13:39:59,048 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 13:39:59,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:59,073 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 13:39:59,073 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:39:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:39:59,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:59,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925869440] [2024-12-02 13:39:59,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925869440] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:39:59,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:39:59,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:39:59,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139834606] [2024-12-02 13:39:59,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:39:59,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:39:59,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:59,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:39:59,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:39:59,533 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:39:59,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 327 transitions, 3651 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 13:39:59,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:39:59,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:39:59,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:40:01,715 INFO L124 PetriNetUnfolderBase]: 4853/8225 cut-off events. [2024-12-02 13:40:01,715 INFO L125 PetriNetUnfolderBase]: For 233982/233982 co-relation queries the response was YES. [2024-12-02 13:40:01,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43683 conditions, 8225 events. 4853/8225 cut-off events. For 233982/233982 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 59474 event pairs, 2233 based on Foata normal form. 1/8055 useless extension candidates. Maximal degree in co-relation 43487. Up to 7010 conditions per place. [2024-12-02 13:40:01,823 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 335 selfloop transitions, 45 changer transitions 5/389 dead transitions. [2024-12-02 13:40:01,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 389 transitions, 4899 flow [2024-12-02 13:40:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:40:01,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:40:01,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-12-02 13:40:01,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-12-02 13:40:01,824 INFO L175 Difference]: Start difference. First operand has 348 places, 327 transitions, 3651 flow. Second operand 11 states and 260 transitions. [2024-12-02 13:40:01,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 389 transitions, 4899 flow [2024-12-02 13:40:02,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 389 transitions, 4735 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-12-02 13:40:02,655 INFO L231 Difference]: Finished difference. Result has 352 places, 331 transitions, 3683 flow [2024-12-02 13:40:02,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3683, PETRI_PLACES=352, PETRI_TRANSITIONS=331} [2024-12-02 13:40:02,655 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 293 predicate places. [2024-12-02 13:40:02,655 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 331 transitions, 3683 flow [2024-12-02 13:40:02,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 13:40:02,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:40:02,655 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, 1, 1, 1] [2024-12-02 13:40:02,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-12-02 13:40:02,656 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:40:02,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:40:02,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1353848693, now seen corresponding path program 41 times [2024-12-02 13:40:02,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:40:02,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507469941] [2024-12-02 13:40:02,656 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 13:40:02,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:40:02,670 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 13:40:02,671 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:40:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:40:03,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:40:03,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507469941] [2024-12-02 13:40:03,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507469941] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:40:03,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:40:03,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:40:03,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45768115] [2024-12-02 13:40:03,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:40:03,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:40:03,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:40:03,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:40:03,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:40:03,066 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-12-02 13:40:03,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 331 transitions, 3683 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:40:03,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:40:03,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-12-02 13:40:03,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:40:04,885 INFO L124 PetriNetUnfolderBase]: 4655/7939 cut-off events. [2024-12-02 13:40:04,886 INFO L125 PetriNetUnfolderBase]: For 219399/219399 co-relation queries the response was YES. [2024-12-02 13:40:04,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41998 conditions, 7939 events. 4655/7939 cut-off events. For 219399/219399 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 57794 event pairs, 2227 based on Foata normal form. 1/7776 useless extension candidates. Maximal degree in co-relation 41800. Up to 7032 conditions per place. [2024-12-02 13:40:05,018 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 332 selfloop transitions, 34 changer transitions 3/374 dead transitions. [2024-12-02 13:40:05,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 374 transitions, 4773 flow [2024-12-02 13:40:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:40:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 13:40:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 246 transitions. [2024-12-02 13:40:05,019 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-12-02 13:40:05,019 INFO L175 Difference]: Start difference. First operand has 352 places, 331 transitions, 3683 flow. Second operand 11 states and 246 transitions. [2024-12-02 13:40:05,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 374 transitions, 4773 flow [2024-12-02 13:40:05,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 374 transitions, 4588 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-12-02 13:40:05,778 INFO L231 Difference]: Finished difference. Result has 357 places, 333 transitions, 3590 flow [2024-12-02 13:40:05,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3498, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3590, PETRI_PLACES=357, PETRI_TRANSITIONS=333} [2024-12-02 13:40:05,779 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 298 predicate places. [2024-12-02 13:40:05,779 INFO L471 AbstractCegarLoop]: Abstraction has has 357 places, 333 transitions, 3590 flow [2024-12-02 13:40:05,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 13:40:05,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:40:05,779 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, 1, 1, 1, 1, 1, 1] [2024-12-02 13:40:05,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-12-02 13:40:05,779 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:40:05,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:40:05,780 INFO L85 PathProgramCache]: Analyzing trace with hash -578167986, now seen corresponding path program 1 times [2024-12-02 13:40:05,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:40:05,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684827935] [2024-12-02 13:40:05,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:40:05,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:40:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:40:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 13:40:05,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:40:05,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684827935] [2024-12-02 13:40:05,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684827935] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:40:05,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141247908] [2024-12-02 13:40:05,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:40:05,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:05,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:40:05,925 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:40:05,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 13:40:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:40:06,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 13:40:06,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:40:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 13:40:06,103 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:40:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 13:40:06,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141247908] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:40:06,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:40:06,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-12-02 13:40:06,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607797863] [2024-12-02 13:40:06,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:40:06,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 13:40:06,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:40:06,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 13:40:06,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-12-02 13:40:06,235 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-12-02 13:40:06,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 333 transitions, 3590 flow. Second operand has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 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 13:40:06,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:40:06,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-12-02 13:40:06,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:40:09,141 INFO L124 PetriNetUnfolderBase]: 7879/14101 cut-off events. [2024-12-02 13:40:09,142 INFO L125 PetriNetUnfolderBase]: For 454194/454462 co-relation queries the response was YES. [2024-12-02 13:40:09,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76143 conditions, 14101 events. 7879/14101 cut-off events. For 454194/454462 co-relation queries the response was YES. Maximal size of possible extension queue 1233. Compared 118672 event pairs, 4487 based on Foata normal form. 292/13975 useless extension candidates. Maximal degree in co-relation 75699. Up to 6391 conditions per place. [2024-12-02 13:40:09,385 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 562 selfloop transitions, 12 changer transitions 18/636 dead transitions. [2024-12-02 13:40:09,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 636 transitions, 8289 flow [2024-12-02 13:40:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 13:40:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 13:40:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-12-02 13:40:09,386 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-12-02 13:40:09,386 INFO L175 Difference]: Start difference. First operand has 357 places, 333 transitions, 3590 flow. Second operand 8 states and 198 transitions. [2024-12-02 13:40:09,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 636 transitions, 8289 flow [2024-12-02 13:40:10,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 636 transitions, 8139 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-12-02 13:40:10,563 INFO L231 Difference]: Finished difference. Result has 361 places, 339 transitions, 3614 flow [2024-12-02 13:40:10,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3524, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3614, PETRI_PLACES=361, PETRI_TRANSITIONS=339} [2024-12-02 13:40:10,563 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 302 predicate places. [2024-12-02 13:40:10,563 INFO L471 AbstractCegarLoop]: Abstraction has has 361 places, 339 transitions, 3614 flow [2024-12-02 13:40:10,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 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 13:40:10,563 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:40:10,563 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:40:10,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 13:40:10,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:10,764 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:40:10,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:40:10,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1963546346, now seen corresponding path program 1 times [2024-12-02 13:40:10,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:40:10,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982752033] [2024-12-02 13:40:10,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:40:10,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:40:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:40:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:40:10,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:40:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982752033] [2024-12-02 13:40:10,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982752033] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:40:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292920103] [2024-12-02 13:40:10,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:40:10,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:10,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:40:10,837 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:40:10,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 13:40:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:40:10,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 13:40:10,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:40:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:40:10,963 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:40:10,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292920103] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:40:10,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:40:10,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-12-02 13:40:10,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604380599] [2024-12-02 13:40:10,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:40:10,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:40:10,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:40:10,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:40:10,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:40:10,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-12-02 13:40:10,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 339 transitions, 3614 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:40:10,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:40:10,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-12-02 13:40:10,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:40:14,887 INFO L124 PetriNetUnfolderBase]: 8530/15486 cut-off events. [2024-12-02 13:40:14,887 INFO L125 PetriNetUnfolderBase]: For 657773/659395 co-relation queries the response was YES. [2024-12-02 13:40:15,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88905 conditions, 15486 events. 8530/15486 cut-off events. For 657773/659395 co-relation queries the response was YES. Maximal size of possible extension queue 1341. Compared 134974 event pairs, 3184 based on Foata normal form. 898/15951 useless extension candidates. Maximal degree in co-relation 88287. Up to 6900 conditions per place. [2024-12-02 13:40:15,158 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 448 selfloop transitions, 34 changer transitions 0/526 dead transitions. [2024-12-02 13:40:15,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 526 transitions, 6911 flow [2024-12-02 13:40:15,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:40:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 13:40:15,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-12-02 13:40:15,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-12-02 13:40:15,159 INFO L175 Difference]: Start difference. First operand has 361 places, 339 transitions, 3614 flow. Second operand 4 states and 128 transitions. [2024-12-02 13:40:15,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 526 transitions, 6911 flow [2024-12-02 13:40:16,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 526 transitions, 6891 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-12-02 13:40:16,710 INFO L231 Difference]: Finished difference. Result has 363 places, 350 transitions, 3977 flow [2024-12-02 13:40:16,711 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3542, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3977, PETRI_PLACES=363, PETRI_TRANSITIONS=350} [2024-12-02 13:40:16,711 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 304 predicate places. [2024-12-02 13:40:16,711 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 350 transitions, 3977 flow [2024-12-02 13:40:16,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:40:16,711 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:40:16,711 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:40:16,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 13:40:16,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:16,912 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:40:16,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:40:16,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1842371131, now seen corresponding path program 1 times [2024-12-02 13:40:16,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:40:16,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106318498] [2024-12-02 13:40:16,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:40:16,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:40:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:40:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 13:40:16,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:40:16,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106318498] [2024-12-02 13:40:16,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106318498] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:40:16,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902766362] [2024-12-02 13:40:16,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:40:16,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:40:16,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:40:17,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 13:40:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:40:17,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 13:40:17,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:40:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:40:17,133 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:40:17,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902766362] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:40:17,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:40:17,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-12-02 13:40:17,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756048877] [2024-12-02 13:40:17,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:40:17,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:40:17,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:40:17,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:40:17,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:40:17,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-12-02 13:40:17,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 350 transitions, 3977 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 13:40:17,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:40:17,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-12-02 13:40:17,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:40:20,434 INFO L124 PetriNetUnfolderBase]: 7002/13223 cut-off events. [2024-12-02 13:40:20,434 INFO L125 PetriNetUnfolderBase]: For 736658/740303 co-relation queries the response was YES. [2024-12-02 13:40:20,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90005 conditions, 13223 events. 7002/13223 cut-off events. For 736658/740303 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 110044 event pairs, 3312 based on Foata normal form. 889/13628 useless extension candidates. Maximal degree in co-relation 89465. Up to 6169 conditions per place. [2024-12-02 13:40:20,918 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 104 selfloop transitions, 7 changer transitions 140/257 dead transitions. [2024-12-02 13:40:20,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 257 transitions, 3920 flow [2024-12-02 13:40:20,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:40:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 13:40:20,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-12-02 13:40:20,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-12-02 13:40:20,919 INFO L175 Difference]: Start difference. First operand has 363 places, 350 transitions, 3977 flow. Second operand 4 states and 134 transitions. [2024-12-02 13:40:20,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 257 transitions, 3920 flow [2024-12-02 13:40:22,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 257 transitions, 3565 flow, removed 66 selfloop flow, removed 34 redundant places. [2024-12-02 13:40:22,462 INFO L231 Difference]: Finished difference. Result has 334 places, 65 transitions, 914 flow [2024-12-02 13:40:22,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2162, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=914, PETRI_PLACES=334, PETRI_TRANSITIONS=65} [2024-12-02 13:40:22,462 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 275 predicate places. [2024-12-02 13:40:22,462 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 65 transitions, 914 flow [2024-12-02 13:40:22,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 13:40:22,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:40:22,463 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:40:22,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 13:40:22,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:22,663 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:40:22,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:40:22,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1308198145, now seen corresponding path program 2 times [2024-12-02 13:40:22,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:40:22,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476765720] [2024-12-02 13:40:22,664 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:40:22,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:40:22,679 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:40:22,679 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:40:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 13:40:23,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:40:23,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476765720] [2024-12-02 13:40:23,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476765720] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:40:23,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999395423] [2024-12-02 13:40:23,044 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:40:23,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:23,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:40:23,046 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:40:23,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 13:40:23,152 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:40:23,153 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:40:23,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 13:40:23,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:40:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 13:40:23,230 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:40:23,276 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-12-02 13:40:23,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-12-02 13:40:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 13:40:23,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999395423] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:40:23,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:40:23,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 4] total 15 [2024-12-02 13:40:23,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965719724] [2024-12-02 13:40:23,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:40:23,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 13:40:23,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:40:23,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 13:40:23,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:40:23,360 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-12-02 13:40:23,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 65 transitions, 914 flow. Second operand has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 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 13:40:23,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:40:23,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-12-02 13:40:23,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:40:25,891 INFO L124 PetriNetUnfolderBase]: 7436/11531 cut-off events. [2024-12-02 13:40:25,891 INFO L125 PetriNetUnfolderBase]: For 694896/700323 co-relation queries the response was YES. [2024-12-02 13:40:26,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87249 conditions, 11531 events. 7436/11531 cut-off events. For 694896/700323 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 67952 event pairs, 1754 based on Foata normal form. 0/11135 useless extension candidates. Maximal degree in co-relation 87106. Up to 6786 conditions per place. [2024-12-02 13:40:26,147 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 154 selfloop transitions, 22 changer transitions 0/180 dead transitions. [2024-12-02 13:40:26,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 180 transitions, 2461 flow [2024-12-02 13:40:26,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 13:40:26,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-12-02 13:40:26,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 321 transitions. [2024-12-02 13:40:26,149 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3235887096774194 [2024-12-02 13:40:26,149 INFO L175 Difference]: Start difference. First operand has 334 places, 65 transitions, 914 flow. Second operand 16 states and 321 transitions. [2024-12-02 13:40:26,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 180 transitions, 2461 flow [2024-12-02 13:40:27,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 180 transitions, 1253 flow, removed 411 selfloop flow, removed 115 redundant places. [2024-12-02 13:40:27,167 INFO L231 Difference]: Finished difference. Result has 111 places, 79 transitions, 490 flow [2024-12-02 13:40:27,167 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=490, PETRI_PLACES=111, PETRI_TRANSITIONS=79} [2024-12-02 13:40:27,167 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 52 predicate places. [2024-12-02 13:40:27,167 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 79 transitions, 490 flow [2024-12-02 13:40:27,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 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 13:40:27,168 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:40:27,168 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:40:27,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 13:40:27,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-12-02 13:40:27,368 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:40:27,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:40:27,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1843136277, now seen corresponding path program 1 times [2024-12-02 13:40:27,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:40:27,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859271045] [2024-12-02 13:40:27,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:40:27,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:40:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:40:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 13:40:27,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:40:27,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859271045] [2024-12-02 13:40:27,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859271045] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:40:27,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543278139] [2024-12-02 13:40:27,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:40:27,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:27,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:40:27,457 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:40:27,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 13:40:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:40:27,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 13:40:27,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:40:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 13:40:27,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:40:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 13:40:27,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543278139] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:40:27,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:40:27,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-12-02 13:40:27,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221211404] [2024-12-02 13:40:27,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:40:27,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 13:40:27,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:40:27,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 13:40:27,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:40:27,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-12-02 13:40:27,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 79 transitions, 490 flow. Second operand has 12 states, 12 states have (on average 19.25) internal successors, (231), 12 states have internal predecessors, (231), 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 13:40:27,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:40:27,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-12-02 13:40:27,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:40:28,991 INFO L124 PetriNetUnfolderBase]: 6960/11717 cut-off events. [2024-12-02 13:40:28,991 INFO L125 PetriNetUnfolderBase]: For 21543/21681 co-relation queries the response was YES. [2024-12-02 13:40:29,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37034 conditions, 11717 events. 6960/11717 cut-off events. For 21543/21681 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 77653 event pairs, 4698 based on Foata normal form. 195/11504 useless extension candidates. Maximal degree in co-relation 36998. Up to 7578 conditions per place. [2024-12-02 13:40:29,070 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 60 selfloop transitions, 14 changer transitions 65/146 dead transitions. [2024-12-02 13:40:29,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 146 transitions, 1184 flow [2024-12-02 13:40:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:40:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 13:40:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-12-02 13:40:29,071 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-12-02 13:40:29,071 INFO L175 Difference]: Start difference. First operand has 111 places, 79 transitions, 490 flow. Second operand 7 states and 168 transitions. [2024-12-02 13:40:29,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 146 transitions, 1184 flow [2024-12-02 13:40:29,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 146 transitions, 1149 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-12-02 13:40:29,159 INFO L231 Difference]: Finished difference. Result has 115 places, 81 transitions, 529 flow [2024-12-02 13:40:29,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=529, PETRI_PLACES=115, PETRI_TRANSITIONS=81} [2024-12-02 13:40:29,160 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 56 predicate places. [2024-12-02 13:40:29,160 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 81 transitions, 529 flow [2024-12-02 13:40:29,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.25) internal successors, (231), 12 states have internal predecessors, (231), 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 13:40:29,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:40:29,160 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:40:29,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 13:40:29,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-12-02 13:40:29,360 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:40:29,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:40:29,361 INFO L85 PathProgramCache]: Analyzing trace with hash -768324043, now seen corresponding path program 2 times [2024-12-02 13:40:29,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:40:29,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356331898] [2024-12-02 13:40:29,361 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:40:29,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:40:29,381 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:40:29,382 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:40:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 13:40:29,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:40:29,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356331898] [2024-12-02 13:40:29,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356331898] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:40:29,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352377799] [2024-12-02 13:40:29,777 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:40:29,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:29,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:40:29,779 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:40:29,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 13:40:29,876 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:40:29,876 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:40:29,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 13:40:29,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:40:30,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 13:40:30,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2024-12-02 13:40:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 13:40:30,254 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:40:30,436 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-12-02 13:40:30,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-12-02 13:40:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 13:40:30,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352377799] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:40:30,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:40:30,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2024-12-02 13:40:30,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844232645] [2024-12-02 13:40:30,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:40:30,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 13:40:30,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:40:30,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 13:40:30,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2024-12-02 13:40:30,961 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2024-12-02 13:40:30,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 81 transitions, 529 flow. Second operand has 30 states, 30 states have (on average 13.6) internal successors, (408), 30 states have internal predecessors, (408), 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 13:40:30,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:40:30,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2024-12-02 13:40:30,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:40:42,869 INFO L124 PetriNetUnfolderBase]: 45182/65680 cut-off events. [2024-12-02 13:40:42,870 INFO L125 PetriNetUnfolderBase]: For 85929/85931 co-relation queries the response was YES. [2024-12-02 13:40:43,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201376 conditions, 65680 events. 45182/65680 cut-off events. For 85929/85931 co-relation queries the response was YES. Maximal size of possible extension queue 1799. Compared 430045 event pairs, 3810 based on Foata normal form. 1320/63290 useless extension candidates. Maximal degree in co-relation 201338. Up to 10500 conditions per place. [2024-12-02 13:40:43,354 INFO L140 encePairwiseOnDemand]: 51/62 looper letters, 781 selfloop transitions, 114 changer transitions 87/984 dead transitions. [2024-12-02 13:40:43,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 984 transitions, 7016 flow [2024-12-02 13:40:43,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-12-02 13:40:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-12-02 13:40:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 1208 transitions. [2024-12-02 13:40:43,357 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3676202069385271 [2024-12-02 13:40:43,357 INFO L175 Difference]: Start difference. First operand has 115 places, 81 transitions, 529 flow. Second operand 53 states and 1208 transitions. [2024-12-02 13:40:43,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 984 transitions, 7016 flow [2024-12-02 13:40:43,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 984 transitions, 6986 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-12-02 13:40:43,454 INFO L231 Difference]: Finished difference. Result has 188 places, 203 transitions, 1786 flow [2024-12-02 13:40:43,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=1786, PETRI_PLACES=188, PETRI_TRANSITIONS=203} [2024-12-02 13:40:43,455 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 129 predicate places. [2024-12-02 13:40:43,455 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 203 transitions, 1786 flow [2024-12-02 13:40:43,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 13.6) internal successors, (408), 30 states have internal predecessors, (408), 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 13:40:43,455 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:40:43,455 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:40:43,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 13:40:43,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-12-02 13:40:43,656 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:40:43,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:40:43,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1088224957, now seen corresponding path program 3 times [2024-12-02 13:40:43,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:40:43,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123814133] [2024-12-02 13:40:43,656 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 13:40:43,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:40:43,685 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 13:40:43,685 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:40:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 13:40:43,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:40:43,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123814133] [2024-12-02 13:40:43,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123814133] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:40:43,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328247500] [2024-12-02 13:40:43,838 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 13:40:43,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:43,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:40:43,840 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:40:43,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 13:40:44,077 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 13:40:44,077 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:40:44,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 13:40:44,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:40:44,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 8 [2024-12-02 13:40:44,142 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 13:40:44,142 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:40:44,180 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-12-02 13:40:44,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-12-02 13:40:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 13:40:44,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328247500] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:40:44,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:40:44,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2024-12-02 13:40:44,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661946313] [2024-12-02 13:40:44,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:40:44,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:40:44,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:40:44,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:40:44,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:40:44,225 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2024-12-02 13:40:44,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 203 transitions, 1786 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 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 13:40:44,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:40:44,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2024-12-02 13:40:44,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:40:53,139 INFO L124 PetriNetUnfolderBase]: 45444/66600 cut-off events. [2024-12-02 13:40:53,139 INFO L125 PetriNetUnfolderBase]: For 511756/511760 co-relation queries the response was YES. [2024-12-02 13:40:53,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285351 conditions, 66600 events. 45444/66600 cut-off events. For 511756/511760 co-relation queries the response was YES. Maximal size of possible extension queue 1684. Compared 441002 event pairs, 5870 based on Foata normal form. 2171/68771 useless extension candidates. Maximal degree in co-relation 285288. Up to 22656 conditions per place. [2024-12-02 13:40:53,929 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 282 selfloop transitions, 85 changer transitions 1/370 dead transitions. [2024-12-02 13:40:53,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 370 transitions, 3625 flow [2024-12-02 13:40:53,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 13:40:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 13:40:53,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 240 transitions. [2024-12-02 13:40:53,931 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-12-02 13:40:53,931 INFO L175 Difference]: Start difference. First operand has 188 places, 203 transitions, 1786 flow. Second operand 10 states and 240 transitions. [2024-12-02 13:40:53,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 370 transitions, 3625 flow [2024-12-02 13:40:56,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 370 transitions, 3419 flow, removed 96 selfloop flow, removed 5 redundant places. [2024-12-02 13:40:56,892 INFO L231 Difference]: Finished difference. Result has 191 places, 222 transitions, 2139 flow [2024-12-02 13:40:56,893 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2139, PETRI_PLACES=191, PETRI_TRANSITIONS=222} [2024-12-02 13:40:56,893 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 132 predicate places. [2024-12-02 13:40:56,893 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 222 transitions, 2139 flow [2024-12-02 13:40:56,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 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 13:40:56,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:40:56,893 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:40:56,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 13:40:57,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:57,094 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-12-02 13:40:57,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:40:57,094 INFO L85 PathProgramCache]: Analyzing trace with hash -717474964, now seen corresponding path program 1 times [2024-12-02 13:40:57,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:40:57,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737212283] [2024-12-02 13:40:57,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:40:57,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:40:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:40:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 13:40:59,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:40:59,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737212283] [2024-12-02 13:40:59,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737212283] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:40:59,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240351955] [2024-12-02 13:40:59,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:40:59,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:59,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:40:59,934 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:40:59,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db57fa3-198a-4fcc-9ed2-866389ff2153/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 13:41:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:00,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-12-02 13:41:00,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:41:01,940 INFO L349 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2024-12-02 13:41:01,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 13 [2024-12-02 13:41:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 13:41:02,411 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:41:24,894 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 13:41:24,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 118 treesize of output 293 [2024-12-02 13:41:28,912 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:41:28,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240351955] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:41:28,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:41:28,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 22, 21] total 68 [2024-12-02 13:41:28,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52680416] [2024-12-02 13:41:28,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:41:28,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 13:41:28,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:28,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 13:41:28,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=4434, Unknown=5, NotChecked=0, Total=4692 [2024-12-02 13:41:33,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:41:37,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:41:41,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:41:41,113 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 62 [2024-12-02 13:41:41,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 222 transitions, 2139 flow. Second operand has 69 states, 69 states have (on average 8.971014492753623) internal successors, (619), 69 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:41:41,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:41:41,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 62 [2024-12-02 13:41:41,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:42:02,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:42:06,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:42:10,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:42:14,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:42:18,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:42:22,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:42:28,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:42:32,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:42:36,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:42:40,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:42:44,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:42:48,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:42:52,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:43:21,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:43:25,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:43:29,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:43:33,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:43:37,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:43:41,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:43:45,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:43:49,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:43:53,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-02 13:43:57,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-02 13:44:01,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-02 13:44:06,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-02 13:44:07,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-02 13:44:12,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:44:16,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:44:20,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:44:24,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:44:28,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:44:32,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:45:16,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:45:20,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:45:24,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:45:29,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:45:33,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:45:37,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:45:41,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:45:45,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:45:49,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:45:53,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:45:57,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:46:01,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:46:05,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:46:09,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:46:13,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:46:17,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:46:21,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:46:25,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:46:29,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-02 13:46:33,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-02 13:46:38,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:46:42,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:46:46,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:46:50,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:46:54,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:46:58,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:02,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:06,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:10,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:14,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:18,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:22,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:26,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:30,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:34,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:38,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:42,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:46,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:51,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:55,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:47:59,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:03,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:07,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:11,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:15,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:19,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:23,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:27,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:31,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:35,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:39,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:43,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:47,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:51,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:55,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:48:59,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:49:03,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:49:07,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:49:11,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:49:19,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:49:23,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:49:27,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:49:31,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:49:35,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:49:39,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:49:43,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:49:47,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:49:51,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:49:55,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:50:00,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:50:04,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:50:08,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:50:12,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:50:16,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:50:20,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:50:24,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:50:28,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:50:32,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-02 13:50:36,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-02 13:50:40,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-02 13:50:44,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-02 13:50:48,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:50:52,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:50:56,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:00,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:04,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:08,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:12,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:16,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:20,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:24,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:28,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:32,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:36,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:40,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:44,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:48,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:52,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:51:56,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:52:00,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:52:04,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:52:08,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:52:12,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:52:16,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:52:20,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:52:24,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:52:28,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:52:32,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:52:36,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:52:40,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:52:44,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 13:52:48,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]